DESIGN, SUPPLY, INSTALLATION, TESTING & COMMISSIONING OF AUTOMATED REFRIGERATION PLANT EXPANSION IN EXISTING SYSTEM OF MILK PROCESSING PLANT AT RAJKOT DAIRY, RAJKOT

to supply and install respective item at same approved rate of our purchase order.

(3) PO rates are inclusive of supply, P and F, freight, Transit Insurance, Loading,unloading,

Installation, Testing & Commissioning i.e. FOR our site, Inclusive of applicable GST.

Delivery Terms and Conditions

Sr.No. Description Details

1 Delivery Location Rajkot Dairy, Rajkot

Delivery/Work Completion

2 06 months from issue of purchase order

3 Other Remarks

Rights Reserved by Rajkot Dairy, Rajkot

Rajkot Dairy, Rajkot, at its sole discretion and without assigning any reason thereof, reserves

the right to accept and / or reject the whole or part of any or all the Bids received at any

stage of tender. Similarly, we reserve the right to award Purchase order in full or part

items/ quantity to any bidder.

Acceptance of Tender Terms and Conditions by Bidder

Quoting price bid on n-procure website will be treated as acceptance of all terms and conditions of

tender document.

I/C Managing Director

Rajkot District Cooperative Milk Producers Union Limited Rajkot Dairy,

SCHEDULE OF EQUIPMENTS WITH BRIEF SPECIFICATION FOR REFRIGERATION PLANT

EXPANSION SYSTEM AT RAJKOT DAIRY, RAJKOT

PART – A : REFRIGERATION PLANT EXPANSION SYSTEM

QTY ITEM DESCRIPTION DATA

1. 1 No. High Stage Screw Compressor Min. Require capacity 250 TR

operating at –10 °C SST / 38 °C SDT

with all associated accessories.

2. 1 Nos. Motor for the above compressor Minimum Require 225 KW, 2 pole,

Premium EFF IE – 4 suitable for VFD

3. 1 Nos. VFD for the above motors Suitable for the above compressor

motor built in an IP 54 enclosure.

4. 2 Nos. Evaporative Falling Film Plate SS 316 Min. Require capacity 350 TR. Design

type Condenser with pump and all condensing temp. is 38 °C, when the

accessories ( 2 w) ambient WBT is 28 °C with SS

5. 1 No. Falling Film Water Chiller 400 TR with Suitable for flow rate of 250 M3/Hr.

valves, controls, instruments and all Designed for refrigerant evaporating

accessories for return water cooling of temp. of –2 °C. The Min. heat transfer

various loads Max. Allow-able pressure capacity of Falling Film Chiller is 400 TR

drop of 0.5 Kg / Sq.cm. considering outlet temp of chilled water

as minimum as possible of 0.5 °C.

MOC of Doors Polycarbonate with SS Suitable size Insulated Balancing Tank

304 / Aluminum Beading made of SS 304 Plates for FFC Chiller

6. Lot Modification in MCC panel & HMI As per requirement for proposed

7. Lot Power, Control, signal and As per requirement ( Main cables from

instrumentation cables, Cable trays PCC to proposed MCC ) Alu cables for

with Accessories and earthing Main cables and copper cables for all

8. Lot G.I. B class Pipes, valves, fittings & Suitable for the existing system

accessories for cooling water, including provisions for future

defrosting water, etc., expansion

9. Lot In situ PUF pipes Insulation for pipes & As per requirement

vessels, equipment, etc. complete Alu

10. Lot M.S Seamless Pipes, valves, fittings Suitable for the existing system

and accessories for refrigerant, oil including provisions for future

lines, etc. SA 106 Sch 40 for temp. up expansion

to –19 °C and SA 333 for below –20 °C

11. Lot Intelligent Automation / Control system As per requirement Suitable for the

of SCADA system for proposed system existing system

to hook-up in existing system

12. Lot Instruments & Safety accessories As per requirement

including Electric Hoist.

QTY ITEM DESCRIPTION DATA

13. Lot Compressor Oil and other consumables

like Gas and charging hose, First As per requirement

charge of Oil as well as First change of

14. 2 Nos. Removal of old existing 300 TR As per requirement removal one by one

evaporative condenser condenser in running plant

15. Lot Erection, Commissioning & Testing As per requirement Suitable for the

charges for entire expansion system existing system

1. SCREW COMPRESSOR FOR HIGH STAGE

The compressors for –10 °C & –2 °C of rotary twin screw type, male rotor driven, running at a

speed not exceeding 2950 RPM ±5 % at 50 HZ AC supply and directly coupled to a 2 pole motor.

The compressor will be supplied with the following and minimum capacities are mentioned in

a. Suction and discharge line stop valves

b. Suction and discharge line check valves

c. Suction scale trap with strainer

d. By-pass arrangement

e. Oil level switch in oil reservoir

f. Electric heater with thermostat in oil separator

g. Pre lube oil system

h. Dual Oil filter of 15 microns

i. Infinitely step less automatic capacity control system for a range of 100% to 10%

j. Manually or Automatic Adjustable Variable / Fixed Volume ratio

k. Unloaded starting

l. Dual safety valve

m. Compressor motor coupling and guard

o. Horizontal shell and tube oil cooler supplied with inlet/outlet connections, valves and fittings

(Thermo siphon Oil cooling).

p. Horizontal oil separator with coalescer filter. The oil separator with one sight glass in oil

reservoir and one sight glass in coalescer section.

The design of the unit shall be of skid mounted packaged type. The Screw package unit ( Only

Block to be imported) comprising of screw compressor, coupling, oil pump, oil cooler, oil

separator, PLC based operator interface panel and interconnection, piping, necessary control

wiring required between sensing element to microprocessor etc. shall be mounted on a

common base frame.

Program Logic Controller (PLC) comprising of display unit with labeled keypad for various action

settings. The compressor is controlled by the above control system and monitors, the condition

and operation for compressor unit continuously and directs the operation of components like the

status of Compressor. PLC will be touch screen colour display of 10” display area.

Our scope of supply includes necessary alarms set points for various parameters such as suction

pressure & temperature, discharge pressure & temperature, Oil pressure & temperature, Pressure

drop across the filter, economizer pressure & temperature, oil temperature inlet & outlet,

ammonia temperature, slide valve position & mode, pump on / off, percentage of full load and

compressor operating mode with time & data shall be recorded for all the events.

The CCP provides annunciation & hooter to indicate the first cause of shut down as well as pre

alarm to warn of potential shut down condition. The CCP includes auto / manual mode selector

switch. An emergency stop button with indication shall be mounted on the panel. The power

supply for the CCP shall be taken from the UPS.

The Motor for high stage Screw compressors shall be of Super Premium Efficiency (IE-4) TEFC

squirrel cage, heavy duty, high starting torque, AC induction Motor, horizontal foot mounted

suitable for 415 V + 10%, 50 Hz., 3 phase supply of rating suitable for continuous duty for

Compressors. The Motor shall be equipped with winding thermistors. The Motor shall be assembled

on compressor base frame, duly aligned complete with all accessories. The Motor should be suitable

for VFD Compatibility and speed controls according to suction pressure and capacity control.

o The above is minimum efficiency and Bidder has to quote as per efficiency range indicated in

other pages for compressor with IE-4 efficiency and IE-3 for Condenser fan and pump and

Chilled water pumps, Ammonia pumps, Agitator Motors and Air cooling units of above

o All polyphase motors of 0.375 KW or more to be supplied with minimum acceptable nominal

full load efficiency.

o All motor name plates shall contains nominal full load motor efficiency and full load power

o Necessary OEM’s certificate to be submitted from OEM/ Suppliers for motor efficiency

o AC variable speed drive with all accessories for the High stage Screw motor and it shall be

supplied with harmonic filters line choke confirming to electro-magnetic compatibility directive

o The VFD includes over load, short circuit, earth fault, single phasing low / high voltage

protections, relays responding to winding thermistors, digital ammeter and current

transformer, metering grade, time totalizer, electronic kwh meter, auxiliary contactor to feed

control supply to capacitor contractor situated in MCC to ON the capacitor while motor is in

o The VFD shall be housed in suitable floor mounting, free standing dust and vermin proof,

powder coated enclosure with ventilation fan door locking arrangement, etc. The VFD panel

shall have suitable rating MCCB as incomer with copper bus bars, inter connection, power /

control terminal blocks with adequate space for termination of power / control cable.

4. EVAPORATIVE FALLING FILM PLATE TYPE CONDENSER

Functional Requirement

New Evaporative Falling Film Plate type Condenser specification.

Design Requirement of Evaporative Condenser.

Two set of capacity Minimum 350 TR at

Capacity & Quantity :

28oC WBT & 38°C Condensing temperature.

Type : Cross flow

: Basin & Casing should be SS 304 and Laser Welded Pillow

Plates should be made of SS

: All necessary valves, fittings to be provided to interconnect

Refrigerant, Plates, with existing headers to be done wherever required.

MOC of Plates:SS

All lines and supports to be painted as per General Procedures.

: All necessary pipes, valves, fittings of provided for make-up

Make up water and drain point from existing Header at Terrace.

MOC of pipes: G.I B Class

: Control wherever required to be supplied including Dual safety

: To be done by successful bidder for new Condenser Fan and

Power, Control and

Pump from existing MCC Feeders. All power, Control and

Signal Cable shall be Copper cables of minimum 2.5 sq.mm.

: For maintenance point of view, necessary platform with

Walkway and Handrail to be provided and finished with SS

/ Galvanized coating. Width of Platform shall be 1.2 -m

: To be programmed from existing PLC panel and Bidder scope

Automation includes necessary Transmitters, transducers with SCADA

Additional gas : To be supplied and charges is in the scope of bidder.

TECHNICAL PAGES FOR EVAPORATIVE CONDENSER:

Sr.No. Description Parameters

1. Evaporative Condenser Type Cross Flow

2. Heat Rejection Capacity (TR)

Designed Parameters –

3.  Wet Bulb Temperature (oC)

 CondensingTemperature (oC)

4. Plate Thickness (mm) 1.2 /

5. Heat Transfer Area (m2) suitable

6. MOC of Headers SS

7. Tank Capacity (Liters) suitable

 Full Bank with Header Tested at

8. Maximum Test Pressure bar for 12 Hours.

 Each Plate Hydro Tested at 40 bar.

9. M.O.C of Water Circulating Pump SS304/OEM

Condenser designed for compressor with economizer load plus 15% safety factor.

Condenser will be cross flow design ammonia condensers suitable for vertical discharge

comprising Laser Welded Pillow Plate Section, drain section, fan section, water distribution

with eliminators and louvers. The condensers supplied with necessary air inlet screen,

Float control water valve, hot gas inlet connection with valve and liquid outlet connection

All cold-water basin components including vertical supports and air inlet louver frames are

constructed of SS-304. Casing, channels, frames and angle supports are constructed of

The Pillow plates shall be made from stainless steel conforming to SS AISI 316L. Two

numbers of plates shall be welded together by Laser welding technology to form the

cassettes to avoid any chances of ammonia leaking through the plates. All water contact

surfaces shall be easily accessible for cleaning and inspection. Plate Bank will be pressure

tested to 30 Bar / 435 Psig under water.

Supporting Frame

The supporting frame for the plate bank shall be of a well-designed made of stainless steel

AISI 304. The frame and supports will be well designed shall prevent any deflecting under

Doors are made of SS 304 with desired thickness.

FAN WITH FAN MOTOR

Fan of axial propeller type constructed of aluminum alloy complete with suitable rating, totally

enclosed air over type with 1.15% service factor & IE-3 Specification and suitable for VFD drive.

The fan drive is a multi-groove, solid pack and the sheave constructed of aluminum alloy

WATER DISTRIBUTION SYSTEM

Heavy duty molded nylon ZM spray nozzles with large 1–5/16” diameter opening and internal

sludge ring to eliminate clogging. ZM nozzles are threaded into Schedule –40 Polyvinyl Chloride

headers equipped with removable end plugs for ease of cleaning.

The eliminators are constructed entirely of Polyvinyl Chloride (PVC) in easily handled section.

Design incorporates three changes in air direction and limits the water carry over to a maximum

of 0.001% of the circulating water rate.

Closed coupled centrifugal pump of suitable rating as per OEM with mechanical seal with pump

motor which is totally enclosed with protective cover. The pump shall be supplied with metering

valve and it shall be IE-3 Specification and suitable for VFD drives.

AIR INLET LOUVERS

The air inlet louvers are constructed from UV inhibited Polyvinyl Chloride (PVC) and incorporate a

framed inter locking design that allows for easy removal of louvers for access to the entire basin

area for maintenance. The louvers have a minimum of two changes in air direction and are of a

non-planar design to prevent splash out, block direct sun light and debris from entering the basin

(Patent Pending).

 The inlets and outlets for ammonia and water side of the heat exchanger shall

be provided with stub end connections.

 The condenser shall be supplied with necessarily make up float valve,

assembly, Pan Strainer.

 The condenser having provision of hinged door for easy maintenance.

 Scope includes necessary electronic water level control system in the basin with

a solenoid activated valve in the makeup line.

scope of supply includes the following accessories:

o Gas & Liquid inlet & outlet valve

o Dual safety valve with housing material with low temperature steel.

Safety valve as back pressure dependent 2 no’s Purge valve.

o Isolating valve for pumping out

o Air Purge connection

o Pressure Gauge with valve

o Make up water connection with all fittings

Any Base frame wherever required as a structural members (all in galvanized steel

construction) shall be used.

The condenser shall be supplied with necessary make up float valve assembly, Pan Strainer. The

condenser having provision of hinged door for easy maintenance.

Condenser to be installed on the building top at suitable height to ensure proper functioning of

thermo-siphon oil cooling system of screw compressor.

Scope includes provision in the Bleed line with necessary arrangement for manual sampling of

Harness of water by using Hand held TDS meter. (Which meter also part of Bidder scope) and

provision to control bleed valve based on the reading.

Condenser to be supplied with

o Side fabricated Access ladder inside & outside unit for ease of servicing.

o To lubricate Fan shaft, condenser to be provided with extended lubrication lines with

grease fittings.

o Water Level control system of Electronic type to be mounted in the basin with a solenoid

activated valve in the make-up water line. Open and close status to be shown in PLC.

The valve to be designed such a way to slow closing to avoid hammering

For more than one condensers installation, Liquid Traps to be supplied with each liquid

outlet from condenser Header. The trap to be considered with proper height above the

vertical liquid leg to accommodate a liquid height equal to the maximum pressure drop

encountered in the condenser and minimum suggested height of the vertical leg is

mm for ammonia system to be considered.

Removing Old Existing 2 Nos. Evapco Evaporative Condensers one by one ammonia

vaccuming, Header Dismantle & unloading in your scope included.

5. FALLING FILM CHILLERS

Functional Requirement:

The return ice water from process equipment shall fall over SS pillow plate Bank and getting

chilled up to 0.5 °C with indirectly by Ammonia refrigerant by Liquid Overfeed system & with its

evaporative temperature of –2 °C.

Capacity and Duty: The preferred capacity and configuration of the Laser welded Falling Film

chiller 400 TR is suitable for the flow of 250 KLPH and duty is from 7.0 °C to 0.5 °C @ ─2 °C

ammonia evaporating temperature. The Laser welded Falling Film Chiller evaporator shall be

suitable for Low temperature application and equipped for Liquid pumping system with ammonia

(R 717) as refrigerant.

Since return process water flow rate and its temp shall be vary time to time depends upon

processing load, bidder has to ensure to take care of fluctuation in processing load ranging with

difference of 1 to 2 deg in the temp of water load as well as fluctuation in the flow rate.

The Ice Water outlet temperature from Falling Film Chiller must be designed not to drop below

0.5 °C when Refrigerant ammonia evaporative / boiling temperature is −2 °C. A suitable

Electronic Back Pressure Regulating Valve (Danfoss) if required, to be installed on wet return

suction line so as to maintain −2 °C (or higher) evaporating temperature of refrigerant ammonia

inside the Falling film chiller Pillow plates. Also Chiller to be designed such a way to take care of

variation in the flow rate and temperature based on fluctuation in Process load.

Design Requirement:

The detailed design of the Laser welded falling film chiller is the responsibility of supplier and shall

meet the relevant codes & standards applicable for manufacturing / fabrication of laser welded

type falling film chiller for refrigeration application.

Testing: The FFC has to be tested after completely assembled, by the manufacturer at their

works with following test pressures and medium.

Type : Laser Welded Pillow Plate Bank

MOC of Plate : SS 316, 1.0 mm thick

MOC of Frame : SS

MOC of Doors : Polycarbonate with SS 304 / Aluminum Beading

Laser welded Pillow plates : 35 kg/cm2

Ammonia side with nitrogen : 21 kg/cm2

It shall be possible to cool down the water nearer to freezing point by low refrigerant evaporation

temperature without freezing the water inside the channels, using necessary control system. The

design of plate bank shall be done in such a way that it is not damaged due to formation to ice

inside the channel, even if controls failed due to unforeseen circumstances / Power failure etc.

Drawing shall be approved prior to execution. Bidder to indicate Total Heat transfer area in Sq.

Meters and ammonia volume in the data sheet without fail.

Plates: The Pillow plates shall be made from stainless steel conforming to AISI 316. Two numbers

of plates shall be welded together by Laser welding technology to form the cassettes so as to

avoid any chances of ammonia leaking through the plates. All water contact surfaces shall be

easily accessible for cleaning and inspection.

Supporting Frame: The supporting frame for the plate bank shall be of a well-designed made of

stainless steel AISI 304. The frame and supports will be well designed shall prevent any

deflecting under pressure.

Doors: Doors are made of polycarbonate with SS 304/ aluminum beading.

Inlet / outlet: The inlets and outlets for ammonia and water side of the heat exchanger shall be

provided with stub end connections.

Thermo-wells: Pockets for thermos-wells on the inlets and outlets of water side and the ammonia

temperature at inlet & outlets side shall be provided. Also temperature sensors (RTDs) for

monitoring / logging the data in Central Control panel shall be supplied by the supplier.

b. Mounting arrangement: The frame shall be provided with suitable mounting arrangement

for securing from any damage and provided with following fittings.

o Liquid inlet and outlet (two phase flow) – flanged and valve

o Cooling water inlet – I type designed for proper water distribution, flanged and valve and

out let flanged & valved

o Necessary arrangement for maintenance of Falling film Chiller

o Oil drain arrangement with isolating valve

o Isolation valve for CIP system

o Pressure and Temperature Transmitter connection with Valve & Transmitters at inlet and

outlet of water side and refrigerant outlet side to monitor thro HMI. (Similarly for Chilled

water pumps sequencing and controls)

The water Falling Film chiller must be equipped with suitable automatic instruments such as PLC

or Stand-alone controller, temperature Indicator, flow switch on water side, ammonia Electronic

back pressure regulating valve (Danfoss make ICS Valve / Eqt having one no. of EVM NC pilot in

the Liquid line and One no Constant Pressure Regulation- CVP-L Valve & One no. of Electronic

CVE Pilot in suction lines.

Necessary local pressure gauges and digital temperature indications on refrigerant side and water

side etc., as well as pressure / temperature transmitters to central PLC for monitoring and auto

control shall be provide. Also any other controls and instruments which are essential for

satisfactory functioning of the system are included in the scope of work including Flow switch of

Non-mechanical type.

The temperature will measure the chilled water temperature at Falling Film Chiller outlet and

communicate to the PLC or stand-alone Controller. Based on the set point (Required chilled water

temp set point) the controller will provide signal to CVP/ Equivalent type which in turn maintains

the back pressure by modulating the opening degree of ICS valve.)

Out let of water from F F Chiller to be received at SS Tank made of SS 304 Materials to match for

6. REFRIGERANT & WATER PIPING.

Supply and install all required piping such as refrigerant, oil drain, defrost water cooling water

lines for condensers, chilled water, etc., necessary for the operation of total refrigeration system

installed by the Refrigeration Contractor. Required valves and NRV's, bends, support materials,

etc. as needed, are included in the scope of the contractor and also to be supplied and installed

by the Supplier within the contract value.

Suction and delivery main headers piping of High stage Compressors should be sized for

simultaneous operation of all the compressors specified in Annexure-II including standby plus

Two / One more compressor of similar capacity proposed to be installed in future in each

stage. (Header size to be decided during detailed engg drawing, but to be supplied as per drg

approval stage without any price implication). Similarly, the main headers of condenser piping, oil

cooler piping, etc. shall be designed suitable for all proposed pumps plus one future pump. Chilled

water supply and return Headers to be designed for all proposed pumps working + additional

same capacity and same no of pumps working in future. Ie Headers to be designed for double the

capacity of current peak flow rates.

All pipe velocities should not cause unreasonable pressure loss or noise and bidder to ensure for

effective liquid and oil entrapment in refrigerant lines.

All pipes and fittings to be get prior approval during detailed Engg drawing approval stage and all

subject to Successful bidder provides necessary Test and other certificates from suppliers/

Manufacturer that all materials selected are satisfactory for duty requirement.

The maximum velocity of the fluids/gas shall be considered as under:

a. Suction gas line (NH3) 15.0 to 17.5 m/sec

b. Discharge line (NH3) 18.0 to 20 m/sec

c. Liquid line (NH3) condenser to Receiver 0.5 - 0.6 m/sec receiver

d. Liquid line Receiver to system 1.0 to 1.5 m/sec

e. Wet return line (NH3) 8 to 10 m/sec

f. Suction line ( water ) 1.0 to 1.2 m/sec

g. Discharge line ( Water) 2.0-2.5m/sec

All refrigerant, oil piping, the contractor shall use "Seamless heavy duty class scheduled 80/40

pipes" as per international standard depending on size of pipe, of SA 53 grade/ SA 106 grade as

applicable. All refrigerant, oil piping shall be SA 106 for –19 °c & SA 333 for below –20 ° c

application. All water line/chilled water line will be G.I medium B class pipes of IS 1239 (Heavy

Duty) upto 150-mm NB and IS 3589 ERW, Heavy duty for 200-mm and above sizes.

Make up, Drain and defrosting water lines are also G.I medium B Class of IS 1239/ 3589 Duty.

All refrigerant valves shall be weldable type of Ferrous, Globe and lift check with IS: 11132 or

relevant ASME/ IIAR Standards. All ammonia valves upto 150-mm shall be STC/ Eqt type and

similarly above 150-mm ammonia valves also STL/ Eqt type.

All water liens valves shall be IS: 778, 1703 standards for CI Butterfly and Ball valves. All water

lines valves above 50-mm to be Flanged type construction and below 50-mm shall be Cast steel

body, SS working parts, 3 sectional type. All vessel plates are steel plate & specification will be

IS:2002 / SA516 Gr.70 & IS:2825, Class:I.

All the refrigeration vessels in the system such as oil separator, condenser shall be considered as

class I vessel according to IS 2825 or equivalent British or American code and all weld joints shall

be tested for 100% radiography.

General Specifications for Ammonia & Water Pipes and its Fittings

Service Material Specification Ends

Refrigerant including oil, Steel pipe (Seamless) BIS :1239/ BIS : Piping to be

purger, vent, line 3589/ SA106 Sch welded type

(─19 °C and above) 80/ 40 Heavy duty

Refrigerant Piping Steel pipe (seamless) ASTM A 333 Grade Piping to be

(─20 °C and below) welded type

Evaporative Condenser Plate Steel pipe (SS 316) ASME B 31.5 Pillow types

Compliant plate

Water circulating pipelines / Galvanized steel (ERW) BIS :l239 /IS 1239 Piping to be

chilled water lines (upto 150 medium duty class B welded type

Water circulating pipelines / Galvanized steel (ERW) BIS: 3589-ERW Piping to be

chilled water lines (above medium duty class B welded type

Make up water supply, Galvanized steel (ERW) BIS :1239 /BIS : Piping to be

bleeds, drains, defrosting medium duty class B 3589 welded type

Ammonia & Water Line Valves (Manually Operated Valves)

Service Material Specification Ends

Refrigerant Ferrous, Globe, lS: 11132 or relevant ASME Weldable

Lift Check. / DIN / HAR Standards

Cooling Water: CI, Butterfly CS IS :778, 1703 Flanged ≥ 50 NB

Over 75 Mm Ball Valve Weldable up to 50 NB

Water Supply, Cast Steel Ball IS:778 Flanged ≥ 50 NB

Bleeds And Drain Valve

Chilled Water Butterfly Valve IS :778 Flanged ≥ 50NB

Supply & Return Swing Check Weldable upto 50 NB

Defrost Water Cast Steel Ball IS: 778 Flanged ≥ 50 NB

Supply & Return Valve Weldable upto 50 NB

The Diaphragm valves shall be of glandless design, self-lubricated and 100% leak tightness

unless, otherwise specified and shall be suitable for not less than 10 kg/sq.cm gauge working

Flanges shall be of good make. The supply of flanges shall also include supply of bolts, nuts,

washers and suitable asbestos fiber / rubber insertion food grade gaskets (Min. 3-mm thick). In

case of hot dip galvanization wherever specified in the tender specification, the minimum zinc

coating required is 80 microns uniform thickness all around the surfaces & in case of spray

galvanization wherever specified in the tender specification, then the minimum zinc coating

should be 120 microns uniform thickness all around in surfaces.

For all refrigerant lines, the Supplier shall follow the welding procedure based on international Code

of Practice. It is expected to follow the procedure that the first route run welding shall be carried

out by argon/nitrogen arc welding by filling argon/nitrogen gas inside the pipe and subsequent

runs may be carried out by arc welding process.

Pipe supports to be supplied and installed shall be adequate to accommodate other service piping, if

any other pipes entering. Supports with plates and anchoring in the refrigeration machine rom and

outside building shall be Hot dip GI and entering in the production/ Process area and cold room

areas shall be SS 304.In the lines subject to thermal expansion, anchors to be provided at proper

location and hangers & supports adjusted to be fair when lines is on working condition

Necessary Platforms to be considered/ provided for all the proposed condenser and LP Receiver

areas where ever required / necessary for ease of operation / maintenance. The platform to be

provided with Hot dip/ Spray Galvanized.

General Requirements for various Lines

 In the refrigeration suction lines, the wet return line to be laid by supplier/ successful Bidder

to fall to the respective liquid accumulators i.e. pump separator wherever a rise in the

direction of flow is necessary/ required, it to be achieved with a lifting trap at the low point.

Any rise of over 3m shall include a lifting trap/leg at each 2m interval branches entering the

suction main shall do so only at the top. The size of the main headers such as suction, wet

return and discharge lines to cater suitable compressors as per the qty mentioned in the

technical pages.

 All Refrigerant Hot gas to be graded from a high point in the compressor branch down to

the condensers. All branches shall have top entry to the main.

 The refrigerant liquid drain system from the condensers to the liquid HP Receiver shall

grade down to the liquid receiver. Relative height at which the condenser installation to

achieve gravity flow which to be calculated and designed by supplier

 All valves shall be Installed with spindles horizontal as per approved from purchaser before

installation. Oil drain / purging valves shall be spring loaded, self-closing type and to be

installed after or in series with hand operated shut-off valve.

 Necessary water for Condensers & Chillers (Soft / RO) shall be supplied by Purchaser at one

point outside or near the refrigeration machine room as per in the Battery Limit indicated in

this tender and from there to all distribution for refrigeration equipments with necessary

valves, flow meter, Pr & temp transmitters where ever required, is the responsibility of the

 All Drain lines to be installed from the locations to the nearest drain suggested by

purchaser. Connections shall be made to this to receive Overflow, Drains including pump

wells. Bleed as appropriate from the cooling and chilled water systems.

 In Condenser cooling water pipes lines, Bidder has to supply and install Flow switch and its

type and make to be get it approved from purchaser during detailed engg drawing approval.

 All outdoor piping (condensers/FFC / make-up water piping) to be mounted and supported

on structural steel members, hot dip galvanized after fabrication. Drawings shall be

 All Pipelines operating below ambient temperature to be insulated as per tender spex and

cladded with AL as per tender.

 All refrigerant safety valve vents shall be piped outdoors to a place of safe discharge, and

the vent outlet shall be of vermin proof (protected from obstruction).

 For all refrigerant lines, the bidder has to follow the welding procedure based on

international code of practice. It is expected to follow the procedure that the first route run-

welding shall be carried out by argon/nitrogen arc welding by filling argon/nitrogen gas

inside the pipe and subsequent runs may be carried out by arc welding process.

 All the refrigeration equipments to be considered as class I vessel according to IS 2825 or

equivalent British or American code and all weld joints must be tested for 100%

 Where ever operating valves are located/ installed above abnormal operating heights or

where the same were not located at convenient locations, then Access platforms with ladder

to be provided by bidder for easy access of instruments, valves and actuators,

7. LINE & VESSEL INSULATION

Insulation for pipe lines shall be In situ Poly Urethane Foam of Density 40 ±2 kgs / m3

(minimum) and equipments shall be carried out as per special condition (mechanical) and minimum

recommended insulation thicknesses are as follows.

Minimum thickness of Rigid Poly Urethane Foam for Ammonia Pipe/Chilled Water Pipe Insulation

However for lines sizes above 150-mm, insulation thickness to be get it approved from

RAJKOOT Dairy before processing. The insulated pipelines shall be supported using high density

PUF block (minimum 80 kg/cum) or using seasoned teak wood as approved. These insulating

supports shall be enclosed in the vapour barrier. The pipe surface shall be thoroughly de-rusted

and cleaned followed by two coats of approved primer prior to insulation.

An outer vapour seal on ammonia/chilled water pipelines shall comprise an approved vapour barrier

sheath (preferably aluminum coated polyester film of 50 microns thick) with joints lapped and

sealed with self-adhesive tape

Insulate the pump separator (LP Accumulator) with suitable thickness as insulation as but not

less than 100 & 120 mm and insulation for 2 °C & 10 °C application of the outer vessel

operation below ambient condition. An outer vapour seal over the insulation using an approved

sheet material (preferably aluminum coated polyester film of Min 50 micron thick) with joints

lapped and sealed with self-adhesive tape. Finished with Aluminium cladding of 24 SWG over the

insulation shall be done in an approved manner.

8. ELECTRICAL ( MCC PANEL, POWER & CONTROL WIRING, CABLE TRAYS, EARTHING ETC)

Complete Electrical distribution system shall be suitable to operate, control and maintain all the

parameters required for entire refrigeration plant / system & power will be provided in a single

incomer of MCC and from there Bidder has to consider for

• Distribution for the MCC to other panels and feeders

• Providing sufficient Box for termination of incoming cable (termination of incoming cable

Separate MCC to be provided to house power feeders for all proposed refrigeration plant and cold

storage indoor unit feeders plus 20% spare feeders but not less than the following quantity. All

Spare feeder shall be provided with necessary internal wiring, MCCB/ MCB but without starters

For new equipment at Main MCC Panel:

FEEDER DETAILS AT MCC (ALL SPARE FEEDERS ARE WITHOUT STARTERS)

DESCRIPTION TYPE OF STARTER NO. OF FEEDERS SPARE FEEDER

1. ―10 °C Compressor VFD

2. Condenser Fan 1 VFD/Soft Starter

3. Condenser Pump 1 VFD/ Soft Starter

4. Condenser Fan 2 VFD/Soft Starter

5. Condenser Pump 2 VFD/ Soft Starter

• Suitable feeder required for UPS, PLC panels as per requirement.

• Suitable feeder for feeding power to all refrigeration Sub-MCC’s

• 400 A MCCB spare feeder

• 160 A MCCB feeder

• 100 A MCC feeder

• 63 A MCCB feeders

• Automatic power factor correction panels with heavy duty APP capacitors suitable for entire

• Automatic Active harmonic filter panel for the entire non-linear electrical load

THE MAJOR OUTGOING FEEDERS REQUIRED AT SUB-MCC AT REF. FIRST FLOOR AREA

Exiting MCC containing Spare feeders and empty compartments. Bidders have to check

availabilities for additional requirements and have to supply separate MCC.

All out-going feeders shall have isolation facilities such as fuse-switch units, contactors, thermal /

magnetic over load protection and necessary operating control etc.

Scope includes a separate PLC panel, refrigeration control panel housing annunciation & its

controls. The communication between the MCC with PLC, plant & cold storage Control panel, shall

be through suitable communication network cable, If required The Bidder scope includes

Modification Existing Computer for SCADA for the PLC Control room.

Scope includes sufficient quantity of braided copper / armoured aluminium & copper power cable,

copper control cable, signal, instrument cable, GI perforated / SS Trays as per routine based on

final approved drawing, chemical type earth pit, earthing network, earthing conductors, load

break Isolators with plug & sockets / junction boxes, Push Button stations for star delta started

motors near motors for emergency isolation and controls, rubber mats all MCC, & PLC for panels,

lockable push button at each floor for emergency stop etc. shall also be provided.

The sizes of power cables for different capacity of loads / motor rating shall be as indicated in

cable selection charts as per tender. All the power & control cables shall be laid through

perforated GI / SS / Fiber Cable Trays and drop conduits (GI/SS).

Scope includes supply of other accessories like suitable thickness (not less than 5-mm) chequered

plate, rubber mat and in a one-word total responsibility of bidder to cover all electrical scope for

refrigeration system. The supplier shall consider this job as a total turn-key job. Hence, all items

including electrical control equipment, instrumentation and interlocking required for safe

operation of the plant is included in the scope of the work even though same is not detailed in the

description / specification.

Electronic equipment, automation and control equipment shall be fully protected against electrical

voltage fluctuations, voltage surges and transitory spikes, by the inclusion of adequate protective

equipment. Pre-commissioning of all protective relays/devices i.e. testing and calibration of all

protective relays to be done through separate testing agency and the same shall have to be

arranged / paid by Supplier.

Special condition electrical installation to be carried out as described in Special Conditions of

Contract – Electrical installation

There should be Lockout – Tag out (LOTO) facility for the MCC feeders as per safety requirement

and MCC panel to be supplied with killer switch.

MOTOR CONTROL CENTER [MCC’S]

Bidder to includes & consider all new equipments complete design, supply, installation, testing

and commissioning of MCC (Intelligent Motor Control Center) with necessary switch gears (one no

in Main Refrigeration plant). The bidder has to consider and provide suitable no of runs of cables

and terminate them at both ends with suitable lugs and glands.

MCC Housing Details:

 The switchboard shall be fabricated using pressed and shaped cold rolled steel sections

structure of adequate thickness as per latest ISI specification, Indian Electricity rules

including any special requirement of concerned state Electricity inspectorate. The sheet

steel used for panel shall be minimum 14 SWG sheet except that the partition plates, inter-

panel barriers and cubical doors may be made of 16 SWG. The switchboard shall consist of

free standing front and back open able panels arranged to form a continuous line-up of

wardrobe type cubicles of uniform height. Cold rolled sheets shall be used for doors and

front covers. Front doors shall be hinged type with quarter turn fasteners and bus bars and

cable alleys covers shall be bolted type. Each wardrobe type cubicle shall house at-least 8 to

10 feeders or as per design requirement of shipping lengths.

 Switch Board shall be extensible at both the ends by addition of vertical sections. Ends of

the bus bars shall be suitably drilled for this purpose. Panels at extreme ends shall have

openings, which shall be covered with plates screwed to the panel. The switchboard shall

be provided with integral base frame. The cable gland plate shall be 2.5 mm thick.

 The switchboard shall be totally enclosed, dust, weather and vermin proof and shall

conform to degree of protection not less than IP 42 or IP 44 as per IS 2147. Gaskets of

durable material shall be provided all round the perimeter of adjacent panel, panel and base

frame, removable covers, doors and other openings. All hardware shall be corrosion

resistant. All joints and connections shall be made by galvanized zinc passivated or

cadmium plated high tensile strength steel bolts & nuts. Spring washers shall be provided to

secure against loosening.

 The switchboard shall be non-draw out wardrobe type design except for the individual ACB

cubicles used, if any, for incoming, outgoing and bus coupler. Each wardrobe shall

contain 8 to 10 feeder components as per design. The MCC shall be suitable for indoor

installation. Suitable cable & bus bar alleys shall be provided if required. All components

of the switchboard shall generally be approachable from front. However, MCC can be in

double front execution also if specifically asked for. The maximum and minimum operating

handle/push button height of any feeder shall not be more than 1900 mm or less than

mm with reference to panel bottom. Supporting arrangement and saddles for dressing of

power and control cables shall be provided. Maximum shipping length of MCC shall be as

per the IEC design. MCC shall be extendable both sides. Space heaters with toggle

switches, MCB and thermostat shall be provided in each cable alley.

 The maximum height of the panel shall generally be restricted to not more than 2,300 mm

and maximum length of a shipping section shall be 2,500 mm. Each shipping section shall

be provided with suitable lifting hooks. These hooks when removed shall not leave any

opening in the board. Supporting arrangement for dressing of power and control cables in

cable alleys also shall be provided.

 Minimum depth of cubicle for installing ACB shall be 1,000 mm. Minimum width of cable

and bus bar alleys shall be 300 mm.

 The switchboard should be designed to minimize the risks of occurrence of internal arc and

whenever such an arc occurs it should prevent its effect on operators and

material/equipment surrounding the switchboard. The short-circuit withstand capacity of

the panel with busbar and supports shall be minimum 50 KA/ 1 sec.

a. Painting for MCC Panel

 All metal surfaces shall be thoroughly cleaned and degreased to remove all scales, rust,

grease and dirt. Fabricated structures shall be pickled and treated to remove any trace

of acid. The under-surface shall be prepared by applying a coat of phosphate paint and

a coat of yellow zinc chromate primer. The under surface shall be made free from all

imperfections before undertaking the final coat.

 After preparation of the under surfaces, the panel shall be spray painted with final two

coats of approved shade of powder coating (RAL 7035 Siemens grey or any other

approved shade during detailed engg drawing approval). Minimum Thickness of

powder coating shall not be less than 60 microns.

 The finished panels shall be dried in stoving ovens in dust free atmosphere. Panel finish

shall be free from imperfections like pin holes, orange peels, run-off paint, etc. All unpainted

steel parts shall be cadmium plated or suitably treated to prevent rust, corrosion, etc.

 Apart from panel nameplate highlighting the operating voltage, the nameplates for all

incoming & outgoing feeders shall be provided on doors of each compartment. Nameplates

shall be fixed by screws only and not by adhesives. Engraved nameplates shall preferably

be of 3-Ply (Black-White- Black) acrylic sheets or anodized aluminum. Special danger plates

shall be provided as per requirement. Lettering size shall be 5-mm or 15-mm as directed.

 Inside the panels, stickers should be provided for all components giving Identification No. As

per detailed wiring diagram.

c. Cooling Fan & Filter assembly, lighting of panels, heater:

 Each section of the panel shall be provided with a set of cooling fan, filter assembly and 2’

long LED tube light fitting operating through a SP MCB and door limit switch.

 Each section of the panel shall also be provided with heating plate and a suitable

d. Bus bar Sizing Connection and i t s Supports (If required):

 The bus bars shall be made from high purity and of High conductivity Aluminium. The

bus bars and supports shall be capable of withstanding the rated and short circuit current

stated in the single line diagram / feeder details. Minimum size of power (phase) bus bars

shall not be less than 200 Amps rating. Maximum current density permissible for Copper

Bus Bars shall be 1.2. A suitable section Copper earthing bus bar shall be provided in the

panel at bottom throughout the length of the panel. Minimum cross section of A1 earth bus

shall be as per Electrical standard/ norms. Provision shall be made to connect the earthing

bus bar to the plant earthing grid at two ends. All doors shall be earthed using flexible

copper connections to the fixed frame of the switchboard. The bus bars shall be tinned to

protect against oxidation. Minimum current density permissible for bus bar shall be

 The bus bars shall be provided with heat shrinkable PVC insulating sleeves of 1100 V grade.

Red, Yellow and Blue colour shall be used for phase bus bars and black colour shall be used

for neutral bus bars. The sleeves should be non-inflammable and self-extinguishing type. All

joints in main horizontal bus bars and all tap-off connections from the main horizontal bus

bars shall be suitably shrouded. Supports for bus bars shall be made of suitable size non-

hygroscopic and non-inflammable epoxy compound SMC / DMC blocks and these should be

adequate in number so as to avoid any sag in the bus bars.

 Minimum clearance between bus bars phase to phase shall be 25 mm and that between

phases to neutral / earth shall be 20 mm.

e. Power Inter Connection with in MCC Panel Board

 Copper conductor PVC insulated cables of adequate cross section shall be used for current

rating below 100 Amps. But for current rating above 100 Amps, Copper bus bar strips of

adequate rating shall be used. Minimum size of copper conductor to be used shall not be

less than as specified below.

o Min. size of Steel braided Copper Conductor for power shall be 2.5 Sq.mm. and Control

cable shall be 1.5 Sq.mm.

o Min. Size of Instrument signal cable Steel braided screened flexible Copper Conductor

shall be 0.75 Sq. mm and wherever 1 Sq. mm cable to be required, then the same has

to be considered accordingly.

 Cable lugs / sockets of suitable size and type shall be used for all interconnections and

cable terminations.

 MCC is to be designed for receiving of incoming power and wherever required cable boxes

with bus bar extensions for receiving Max. no. of Cables to be provided by supplier. For all

aluminium to copper connections, the copper surfaces shall be properly cleaned and

supplied with oxide inhibiting grease. Copper washers shall be used in these terminations.

 For all outgoing motor feeders, the suitable size terminal blocks shall be provided in

cable alleys and wiring up to these from contactors shall be done by panel Supplier.

These terminal blocks shall be heavy-duty type to withstand high starting currents. The

cable entry shall be either from top or bottom as specified in feeder details. Wherever

required removable gland plates of minimum 2.5 mm thickness shall be provided on

top / bottom of panel for cable entries. The cable alleys shall also be totally isolated

from switchgears by suitable partition plates.

 To prevent accidental contacts, all junctions of interconnecting cables and bus bars also

shall be shrouded suitably using coloured PVC insulation tape. Standard colour code of

red, yellow and blue for phases and black for Neutral to be followed for all bus

bars/conductors.

f. Auxiliary wiring and terminals:

 Wiring for all controls, protection, metering & signaling etc. for inside the switchboard shall

be done with 1100 V gray colour PVC insulated FRLS copper conductors. Minimum size of

these conductors shall not be less than 1.5 mm°. However, CT circuit wiring shall be done

with 2.5 mm°. Control wiring to components fixed on doors shall be flexible type.

 15% spare terminals shall always be available in each terminal block. Control wiring up to

these terminal blocks shall be done by Supplier.

 Min. 20% spare power feeders of various ratings completely prewired shall be supplied in

each of the MCC.

 All conductors should be terminated using compression type cable sockets / lugs at both the

ends. Each control wiring termination shall be identified at both the ends by PVC ferrules.

The identification termination numbers should match with those on drawings. Suitable size

SP MCB shall be used for tapping power for control circuit wiring.

 For all motor more than 5-m distance and for all motor starter feeders, provision for control

wiring to remote ON/OFF control is to be made. The auxiliary wiring for the same shall be

brought up to terminal block in the feeder's cubicle.

g.1 Air Circuit Breakers {ACB’s}:

 These shall be (4 pole EDO ACBJ, fully draw out type with built-in microprocessor based

programmable protection, and suitable for 415 V, 50 Hz supply. Microprocessor based

programmable protection unit shall have settings for overload, short circuit, instantaneous

and earth fault currents with time delay and LED indicators to show various conditions such

as power ON, overload, short-circuit, instantaneous earth fault, percentage load, self-

diagnostic test etc.

 Mechanical spring charging mechanism stored energy type shall be provided with

mechanical indicators to show ‘Open’, ‘Close’, ‘Service’ & ‘Test’ positions. The circuit breaker

shall be provided with mechanically operated emergency tripping device. This device shall

be available on the front of the panel. The control supply shall be 240 V AC. 0 NO + 6 NC

auxiliary contacts shall be provided.

 Model of ACB shall be either 3-WL Series of Siemens or Omega U power series of L&T or NW

Series of Schneider

The interlocks for ACB shall be as under:

 It shall not be possible to plug in a closed circuit breaker or to draw out a circuit breaker in

closed position. It shall not be possible to operate a circuit breaker unless it is in fully

plugged-in, test or fully isolated position. In test position, the breaker shall be tested

without energizing the power circuit. The ACB feeder cubical door cannot be opened when

ACB is "ON". However, it shall be possible to defeat this interlock for inspection purpose.

Closing and trip coils shall work under the following voltage variation conditions:

o Closing coils - 85 % to 110 % of rated voltage

o Trip coils - 50 % to 130 % of rated voltage

 For series tripping, overload, short circuit and under voltage/shunt trip release shall be

 Built-in relays for overload, short circuit, instantaneous and earth fault protection shall be

provided for incoming feeders' ACB. Suitable port like RS 485 shall be available in ACB for

transferring / communicating data pertaining to operation parameters, to main PLC / DCS

 Current rating, short circuit current, protection relays etc. shall be as specified in feeder

g.2 Moulded Case Circuit Breakers {MCCB}

 MCCB’s shall always be provided with separate rotary operating handle mechanism with

door interlocking. The MCCB’s shall be of three / four pole construction (as required in the

feeder details) arranged for simultaneous three / four pole manual closing or opening and

automatic instantaneous tripping on short circuits. MCCB’s shall be provided with adjustable

type tripping device with inverse time characteristics for over load protection.

 Closing mechanism shall be quick make, quick break & trip free type. Operating handle shall

give a clear “ON”, OFF' & “TRIP” indications. Control voltage for MCCB shall be 240 volts.

The MCCB’s shall be rated for continuous maximum duty as specified. The Minimum rating

of the MCCB’s shall be as per the feeder details.

 But Minimum rated breaking capacities shall be:

o MCCB’s up to 200 Amps : 35 KA

o MCCB’s above 200 Amps : 50 KA

 Model and type of MCCB shall be either 3VA series of Siemens or D-Sine series of L&T or

NSX series of Schneider

 All feeders having 3 pole MCCB shall be provided with neutral link complete with isolating

link. However, the MCCB for incoming and non-motor outgoing feeders shall be of 4 pole

construction, unless stated otherwise.

g.3 Motor Protection Circuit Breaker {MPCB}:

 All motors below 30 KW shall be protected by Motor Protection Circuit Breakers (MPCB)

having suitable rating thermal overload relays. These shall be used along with

contactors as specified in feeder details.

 The MPCB will have motor protection tripping characteristics, current limiting and shall

have low let through energy. It shall have bi-metallic overload protection and

electromagnetic release for short circuit protection. MPCB shall have inbuilt single phase

protection and adjustable overload settings.

 In the MPCB, it shall be possible to have accessories like auxiliary contacts, trip alarm

contacts, shunt release, as required for motor control and protection. The breaking

capacity of MPCB shall not be less than 50 KA. MPCB shall have rotary operating

mechanism with door interlock and provision to lock it in ‘OFF’ position with a padlock.

 The rating of the power contactors shall be as required depending upon the feeder

rating indicated in the specifications and as per the feeder details table provided in this

specification below. Contactors coils shall be suitable for 240 volts, 50 Hz. unless

otherwise specified. All contactors shall be supplied with minimum 2 NO + 2 NC

auxiliary contacts. Additional contacts if required for interlocking etc. shall also be

provided. Minimum contactor rating for power shall be 9 Amp. All the three contactors

of Star Delta Starter shall be of same rating. Rating of contactors shall be based on

 All contactors of motor starters shall be suitable for AC 3 duty unless specified otherwise.

g.5 Protective Devices

 Intelligent Motor protection relays are required for starter feeders instead of bimetallic

overload relay or other special relays for incoming & outgoing feeder. These shall be fixed

on DIN rails or on mounting boards.

 The IMPR should provide the communication ports for the connection to the communication

network. It should be easily integrated into the communication architecture with remote

information access.

 It shall be an open communications system, which means that it shall be directly connected

to the main industrial network protocols, listed below:

o Mod Bus / Ethernet

 The IMPR should embed the relevant network protocol in built-in (native) mode. It should

be user-friendly software running in a Windows environment to ease the IMPR on-relay

configuration. The software should have menus and icons for easy access to the data

required, guided navigation to go through all the data of the same function in one screen

and with a file management system.

 The timers shall be continuously adjustable & electronic type, suitable for 240 V, 50 Hz

supply. The timers for Star Delta automatic starters shall have time delay of 0 to OO

seconds between changeovers of contacts.

g.7 Push Buttons {PB’s}

 Push buttons shall be complete with actuator and contact block and shall be generally

mounted on doors of the cubicles. Colours shall be as follows:

o Stop / O pen / E mergency - Red

o Start / C lose - Green

 It should have minimum 1 NO + 1 NC contacts. Push buttons shall conform to IP -

65 protections against dust and water ingress.

g.8 Indication Lamps

 All outgoing & incoming feeders shall be provided with ‘ON’ indication lamps. Colours

shall be as under:

o Phases : Red Yellow, 8s Blue

o Tripped : Red

 Indicating lamps shall be of LED (cluster of high intensity light emitting diodes) type,

suitable for 240 V AC supply. These shall be provided with translucent covers of red,

green and amber colours as required. These lamps shall be of minimum 22.5 mm dia.

Indication lamps to be provided for all feeders.

g.9 Current Transformers ( CT’s ):

 CTs shall be cast resin insulated type. Primary and secondary terminals shall be marked

indelibly. CTs shall preferably be mounted on stationery parts. These shall be capable of

withstanding momentary short circuit and symmetrical short circuit current for One Second

and shall have a minimum rating of 10 VA. Neutral side of CTs shall be earthed.

 Protection CTs shall be of low reactance, accuracy class "5P" and an accuracy limit factor

greater than "10". Instrument CTs shall be of accuracy class 1.0" and accuracy limit factor

less than "5.0".

 Separate CT's to be provided for protection and metering purpose.

g.10 Measuring Instruments

 These shall be of square pattern having approximate dimensions 96-mm x 96-mm, flush

mounting type. Necessary auxiliary instruments like CTs etc. are also included in the scope

 All AC meters shall be of Digital type for displaying three phases reading. Suitable selector

switch shall be provided if the digital meter does not have provision for simultaneous

display of three phase readings.

 Voltmeter shall be suitable for direct line connection. Voltmeters shall be connected through

 Intelligent Panel Meter shall be provided with incoming feeder of the MCC for the

measurement and digital display of Multifunctional Electrical Parameters such as voltage,

current, active power, reactive power, frequency, power factor, active energy, reactive

energy, etc. Data port will be provided to communicate all these parameters to Main PLC

Panel through suitable data bus/ signal communication cable which shall be further

transferred to central MIS system.

 All motor feeders of 5.5 KW and above shall be provided with local ammeter. Ammeter shall

also be provided for all incoming & outgoing ACB / MCCB / Switches of rating 100A and

above. Ammeters shall always be CT operated.

h. Special Requirements

 The major outgoing feeders required to be provided in the MCC are indicated in earlier

pages However during detailed engg drawing approval, if any addition in the below list also

to be supplied / provided by Successful bidder on PO price itself without any price

 All out-going feeders shall have isolation facilities such as fuse-switch units, contactors,

thermal / magnetic over load protection and necessary operating control etc.

 Separate 24V DC power source for controller power supply shall be of suitab1e rating from

UPS to be provided and logically distributed.

 The following selection table shall be followed for switches & starters of motor feeders

unless otherwise specified:

Sr. Contactor MCCB MPCB

415 V Motor KW Type of Starter

No. Rating AMPS Rating AMP Rating Amp

1 Upto 2.2 KW 9 - 9 Soft starter

2 2.2 to 3.7 KW 16 - 16 Soft starter

3 3.7 to 7.5 KW 16 16 Soft Starter / VFD

4 9 to 11 KW 25 - 25 Soft Starter / VFD

5 15 to 18 KW - - 40 Soft Starter / VFD

Note: Apart from the above tables, any feeder below 5.5 KW rating for chilled water pump and

condenser fan load and which require variable speed should be based on VFD starter.

 Wherever VFDs required shall be provided as per detailed technical specifications.

 For incoming / outgoing feeder of rating up to 630 A, 4 Pole MCCB and for rating higher

than 630 A, 4 pole ACB shall be provided unless otherwise stated in the feeder details

 MCCB, 4 pole shall be provided (unless stated other-wise) for outgoing feeders of rating

Amps and above and preferably these shall be located at the lower portion of the panel.

MCCBs are to be supplied as per the requirement given in feeder details.

 Each incoming feeder shall have independent instrumentation, protection relays, APFC

 Electrical interlocking shall be provided between various feeders as required by the process

and specified in feeder details. Interlocking will also be provided in software program of

Main PLC Panel.

 ON/OFF operation of all motor feeders shall be possible in both Auto mode (PLC signal

operation) as well as Manual mode (Push Buttons) from MCC through A/M selector switch.

Indication for ON/OFF/TRIP for all motor feeders shall be provided.

 Provision shall be made to communicate operational parameters / data from all incoming /

outgoing feeders to main PLC/DCS Panel through suitable data bus/ signal communication

cable. Operation parameters of motor feeders like ON/OFF status, actual current, trip

status etc. shall be communicated.

 Suitable de-rating factor of cables as per manufacturer's guidelines to be applied where

more than one cables feeding to various motors / drives are to be laid in parallel

 All the major components of an MCC shall be of any one of tendered approved make and all

the major components of an MCC shall be of same "Make" for ease of spares inventory.

 Feeder details for incoming and outgoing for this project, as per battery limit and as per the

design requirements of the plant, to be calculated and submitted by successful Supplier.

 Wherever desired distributed I/O’s with Communication adaptors or linking devices shall be

installed in each shipping split or shipping section and factory wired to each starter unit.

MCC shall be connected to remote controller / SCADA via one network of high bandwidth.

Network connection from remote controller wherever required is to be made to the

communication adaptor / linking devices installed in each shipping unit.

 However, it is preferred that all the intelligent relays on Soft Starters and VFD provided in

the panels for electrical equipment shall be interfaced to the Central PLC through open

protocol communication cable (open networks) for control action and data acquisition /

diagnostic information directly at device level. The VFD shall be dynamically controlled from

the PLC depending on the program and feedback system from field.

 These VFD should have communication port. The routing of network cables in MCCs may be

through horizontal and vertical wire ways. However more optimized approaches such as use

of Trunk lines and drop lines isolated behind barriers or Independent, easy-connect ports on

drop lines are preferred. These configurations would provide independent, readily

accessible ports to simplify installing, withdrawing, relocating and adding plug-in units. The

configuration is preferable to daisy-chain architecture, in which moving or adding an MCC

unit requires interrupting the chain and disabling downstream units. The open networks

shall be such as Ethernet, Modbus, Device-Net and PROFIBUS.

LT Power Cables:

All Power cables to be copper conductor cables from MCC & from Panels to all proposed

Individual equipment’s. Cables up to 50 sq.mm size shall be of 1100 V grade, Multi-stranded

Class-V, flexible Annealed bare copper cables, Flexible Steel wire braided and overall PVC

sheathed as per IS -5831 ST-1, armored cables and above 50 sq.mm shall be HR PVC/XLPE

insulated, PVC sheathed copper conductor. Minimum size of power cables shall be 2.5 mm

Similarly, Bidder scope includes Main cables of Copper conductor cables from Proposed

Refrigeration MCC to proposed refrigeration .

However, from PCC to Refrigeration MCC of suitable run & size of Aluminium conductor to be

provided and terminated by Bidder shall be of use on 415 V system shall be of 1100 V grade of

Aluminum cables XLPE insulated, PVC sheathed, armored and overall PVC sheathed, strictly as

per IS: 7098 (Part I)-1988

LT Control Cables:

Control cables for use on 415 V systems shall be of 1100 V grade, Multi-stranded class –V,

flexible annealed bare copper conductor, PVC/ XLPE insulated (type A), PVC inner Sheathed &

flexible armoured, steel wire braided and over-all FRLS PVC Sheathed. All cables with Anti Rodent

property and minimum size of control cables shall be 1.5 mm

Instrument signal & analog cable shall be 300 -500 V grade of multi- stranded class –V, flexible

annealed plain copper conductor, extruded PVC types A insulated. All instrument cables shall be

rodent Proof (Anti-Rodent property).

The minimum conductor diameter shall be 1.5 mm 2 and for signal cable minimum size shall be

Other detailed specification for all cables has indicated in Annexure-IX-C in Special

instruction to carry out Electrical Installation.

All armoured cables between feeders in MCC & plug-socket/isolator junction boxes near motors

shall be of copper conductor. Connection from plug & socket/isolator junction boxes to motor

junction boxes shall be with PVC insulated flexible copper cable in flexible SS conduit.

The selection table for cables of various motors has indicated in Annexure-IX-C

Other Accessories: Supply and providing of 5-MM thick M.S Chequered plats including Painting

for masonry / concrete trenches where ever required, Necessary 1.1 KV Grade thick rubber mats

with ISI marking CLASS-A, 2 mm thick in front of all electrical panel as per latest IS / IER

requirement including I.M.C.C.'s.

Provide and fix cable route markers, danger plates, shock charts and supply all items and perform

all services necessary to meet the requirements of the Electricity Authority. Necessary statutory

approvals shall be obtained by the contractor.

Earthing (Chemical Earthing) : Main Earthing will be of chemical earthing of ASHLOK make and

to be for both MCC Panel and PLC Panels severalty. Prior approval to be taken from Purchaser in

charge for selecting type of earth electrodes (pipe or plate)

All earthing mains shall be either Chemical earthing or Galvanized. The earthing to the equipment

will be with the help of PVC insulate copper/ GI wire for motors up to 7.5 KW. For motor above

7.5 KW and above the earthing shall be done with GI strip and the end connections shall be using

tinned copper flexible connections of adequate rating

An earth pits and earthing system of instrumentation, computers and PLC controls shall not share

the elec. Load earthing system of electrical power equipment and a separate copper plate

earthling as per statutory rules with copper interconnection strips/wire shall be supplied and

erected. All related works are in the scope of Supplier including the earth pit civil works and

Cable Trays & Accessories: Bidder scope includes suitable MOC of cable trays as per

requirement either with Fiber/ SS Mesh type or Fiber/GI Trays as described in Annexure- IX for

various areas. Cable trays perforated type, heavy duty, inward bend shape, manufactured from

mild steel conforming to IS-226 and hot dip galvanized as per IS-2629/BS- 729. Height of trays

shall be minimum 50 mm with plate thickness of 1.5 mm up-to 300 mm cable tray width and 75-

mm height with 2.00 thick for cable trays having width more than 300 mm. All accessories of

cable trays such as coupler side plates for joining cable trays, bends, riser, inside riser, tee etc.

shall also be supplied.

Cable tray for automation & signal cables shall be separate from power and control cables. SS

ladder / cage type cable trays shall be provided with in the product processing plant except for

incoming power cables to MCC and outside the plant building in Perforated GI type with Cover.

Where ever vertical drop out shall be Ladder/ Cage type SS Cable tray

Details specification for earthing & cable trays and other accessories has indicated in Annexure-IX

in Special instruction to carry out Electrical Installation.

Power Factor Control & Active Harmonic System

Automatic power factor control panel complete with required switch gears, capacitor banks etc as

per the plant requirements to improve the powder factor up to 0.99 lag shall be provided. The

complete operation of the APFC shall be automatic. However, it shall also be possible to switch

ON/OFF the capacitor banks through push buttons manually. Ammeters shall be provided for each

capacitor bank.

Multifunction active harmonic filters with TRUE harmonic solution shall be provided. That shall

provide 3 phase harmonic current compensation. It must be equipped with user friendly control

The rating of the active harmonic filter & details of proposed system shall be decided after

detailed analysis of the power when the plant is operated at full capacity.

i. APFC Panel with Automatic PF correction Relay.

Power Factor Improvement Panel with APFCR Relay:

 Power Factor Correction Panel with Microprocessor based Automatic Power Factor Controlling

Relay and bank of capacitors as given in the data sheet shall be provided for PCC to

continuously measure and monitor the power factor of the electrical system by sensing

the total load from the incomer and switch ON / OFF bank of power capacitors to bring the

power factor of the system to a preset value. The APFCR shall have a digital power factor

meter with 4-digit LCD / LED display. Panel to be fabricated with 14 SWG thick cold rolled

sheet steel structure, indoor type, floor/wall mounted, weather and vermin proof.

 Panel should be suitable for 415 volts, 50 Hz, 3 phase supply. It would consist of

o An automatic power factor Improvement Panel of Ultra Heavy duty to control and

monitor power factor of 0.98 to 0.99. Panel comprising of correction relay, micro-

processor based, with arrangement for sensing the power factor of the inductive load

(min. 16 channels / outputs considering future) and giving signal to the feeders of

power capacitors as per the setting of P.F. and electronic circuit to ensure that once a

capacitor gets cut off, it is not put on at least for a minute. The relay should

automatically manage capacitor banks according to the reactive power required to correct

the power factor of the load to the power factor set on the relay. The capacitors must be

turned “on” and “off” to correct the power factor of the load to the power factor set on

the relay. The relay should have automatic and manual mode of operation with an LED to

indicate the operating mode. The auto/manual function makes it possible to turn the

capacitor banks “on” and “off” manually regardless of the line value measured

o For each of capacitor feeder one set of suitable rating MCCB, contactor, pair of ON/OFF

push button and indication lamp shall be provided. MCCBs for power capacitors shall be

provided with thermo magnetic release only.

o Flush mounted, 96 mm x 96 mm square, digital Power Factor meter having 4 digits LCD or

o Selector switch and CT operated digital Ammeter of size 96 mm x 96 mm.

o Selector switch and digital Voltmeter of size 96 mm x 96 mm.

o Auto-manual switch and connected circuit to ensure that in manual mode each capacitor

can be put ‘ON’ / ‘OFF’ manually also

o Incoming feeder of APFC Panel: 4 Pole, 415 V, 50 Hz, MCCB of 630 A rating with built-in

microprocessor based programmable protection.

o Suitable 3 phase and neutral bus bars.

o Panel shall have sufficient spare cubicles (space only- for future provision of capacitors &

switch gear and shall be decided at the time of drawing approval of APFCR panel)

 Wiring for all above accessories / functions should be complete and ready for use. The details

of each capacitor bank rating, no. of capacitor banks for power factor improvement shall be

as per details given in the data sheet and schedule of quantities.

 All power cabling between PCC and capacitor banks panel and cabling of each capacitor are

included in the scope of work of this package. Power improvement capacitor banks shall be

housed in the APFC Panel itself and provided with adequate louvers with ventilation fans,

prewired through MCB switch for adequate ventilation

j. Power Capacitors Banks:

The power capacitor banks shall be used to improve the power factor of an electrical system

and shall be housed in the APFC panel itself and provided with adequate louvers for proper

k. Design Requirements:

Each basic unit is to be built up with a number of elements. These elements shall be of

two layer dielectric design (non-self-healing) using heavy Polypropylene Film, aluminium Foil and

Capacitor Tissue Paper as required to ensure that total dielectric thickness is more than

micron. Capacitor element must be completely sealed with epoxy resins to provide maximum

humidity protection and highest insulation. The capacitor elements are to be given adequate

outside insulation and should be put in all welded surface treated MS containers. The outer

surface shall be provided with a coat of protective primer followed by two coats of synthetic

enamel paint of approved shade. These capacitors shall be impregnated with special grade of

capacitor oil under high vacuum. The metal case shall be equipped with porcelain bushings to

permit connection between power lines and active capacitors. The unit shall have built-in internal

individual fuses. All capacitors shall be of APP (All Polypropylene) Heavy Duty Type.

Externally each capacitor unit shall have two separate earthing points, name plate confirming to

the requirements of IS-2834 (amended up to date), discharge resistances etc. Each capacitor

should be suitable for operation on 440 V, 3 Phase, 50 Hz AC power supply.

 Technical Requirements: Total bank capacity for each panel : As per requirement

9. COMPUTERIZED CENTRAL CONTROL PROCESSING UNIT (CCPU) AUTOMATION

The scope of work shall cover design, project engineering, control philosophy, software

development, manufacture, Pre assembly, Factory testing, delivering at site on safe condition &

safe storage, Installation, site testing & pre-commissioning, commissioning, initial & successful

operation and performance testing of the entire control and instrumentation package of the

refrigeration plant for safe, reliable, consistent, optimum and efficient operations including all

necessary field instruments, transmitters, sensors, indicators, VFDs, Soft-starters, UPS, cabling,

earthing, cabinet etc. in our existing DCS/high-end smart PLC systems.

The entire C & A (Control & Automation system) shall be “A Totally Integrated Process Control

System” (DCS or equivalent high end PLC system having standard features of DCS) with field bus

technology ( Industrial Ethernet or Profinet or Equivalent Open Protocol) for RIO stations, Main

PLC & MIS etc., designed, supplied and commissioned to enable the operator to operate the

Refrigeration plant in a safe, efficient and reliable manner, without exceeding plant operational

limits and ensuring the overall performance guarantee conditions. The DCS/high end PLC system

be capable of handling sequential control logic through a graphical user interface & should be able

to provide sequential diagnostic.

Scalability: The offered system shall be suitable for future expansion with all necessary accessories/

modules provisions.

Comprehensive self-diagnostic features shall be provided to facilitate easy fault location and

detection of failure without individually checking each module. On-line testing facility of control

system while the unit is in operation shall be provided with suitable indication for easy

identification of faulty module. Cut cables and faults shall initiate an operator alarm with a hard

The process / final control element interface section shall comprise of various signal interface

cards suitable for communication with field devises, distributed I / O stations, local control panel,

intelligent actuator/sensor, frequency drives. Sensors will be checked for open and short circuit

conditions. Failure of sensor / transmitter shall not lead to malfunction of the corresponding

control system.

The control system to be provided with visualization software capable of advanced dynamic

visualization for plant operations and other facilities like dynamic values, color changes, line

animation, blinking on condition, objects which do not have to be changed individually, recipe

management feature, event triggers/logging, calculations, etc. shall be part of system. The

system shall be capable of data collection and real-time/historical trends. The system shall be

capable of handling sequential control logic through a graphical user interface & should be able to

provide sequential diagnostic to the operator.

The network to be operated based on High speed (speed of 10/100 Mbps) Industrial Ethernet

standard or Fiber optics for more than 90-m distance with necessary future extensions.

Industrial Ethernet shall be preferably Ethernet IP or Profinet or Equivalent Open Protocol. The

network to be of Industrial Managed switches used in the system (Terminal lines & field bus)

supporting L2/L3 having network diagnostic application and has to indicate all diagnostic

information. (Health and load of network on the operator’s console)

PLC shall be PC based system with real time process control of scanned a retrievable memory of

the required program and operating systems, the storage of hours runs for compressors, pumps,

etc., number of starts, system run time, etc. and these shall be accessible to the operator.

The integrated control system proposed for Refrigeration plant shall be fully automatic, with

requisite features of both DCS/high-end smart PLC systems.

The proposed Automation system should have following features and benefit by way of:

• High degree of System availability and reliability with necessary spares viz. 20 % spare

I/O cards, 40% spare memory for main DCS/PLC CPU, 35 % spare SCADA tags in the

main CPU, back plane, switches, network components etc.

• The 12 V /24 V DC power supply system for the CPU as well as field Input /Output station.

• Extensive diagnostic capability to pinpoint failure areas quickly.

• Low downtime and high meantime between failures.

• System flexibility and modular up-gradation/expansion capability. Tightly Integrated

Controller having Tag based addressing with HMI preferred

• Safety of the control system (hardware & software) with related equipment and operating

personnel. The control system should be tamper proof & immune from external un-

warranted influence.

• Scalability & safety of entire automation

• Communication network shall be deterministic nature

• Increased Process optimization / advanced energy management schemes.

• Speed (Scan Time) of the system shall improve considerably

• The system shall have Audit trail (Data log) facility for Min. 12 to 15 days.

• Electrical Load management system MCCs, Water flow meters shall be communicating with

central automation system for automatic online data transfer.

• Low down time and High meantime between failures.

20 % spare I/O cards shall be provided. 40% spare Memory capacity of the DCS / PLC Processor

for expansion shall be provided. The SCADA stations shall have 35% spare tags. high end server

based PC with RAID-3 or RAID 5 & hard disc. MIS server with 30 days storage capacity having

spare memory partition to provide a high level of fault tolerance.

All communication with the I/O stations including third party shall be digital having required

overall speed. There shall not be any loss of data/information packets during various

communication processes.

The instruments shall be conventional type (with hardware signal Input/output having necessary

field diagnostic features such as open wire, short circuit, no load & device failure).

The system shall cater to both the digital (on/off inter-locking) and Analog (continuous

monitoring of temperature, flow etc.) inputs and outputs. The system shall have adequate

capacity for storage of all important plant operation & performance data over a long period

(typically for month). Transferring/writing of data in compatible format to CD/DVD shall be

The operator interacts with the process though a suitable station provided with colour displays for

easy plant operation. The system shall also include a printer for the purpose of printing the log

sheet shift-wise, daily operating details, shift-wise/daily consumption & performance reports and

also listing/logging of important process parameters.

All instrument / tag as per approved P&ID will be visible in screens. Provision to be kept for

proposed / future equipment mentioned in the tender. Latest updated SCADA Program (either FT

View 100 or equivalent one and unlimited screen for OWS & EWS) display & display shall be

available as a file for reference and print purpose.

Necessary provisions shall be available to enable exchange necessary operational data to the

Dairy’s MIS system in a compatible format.

All the basic control functions such as analog, discrete element controls shall be performed by the

system. This includes logic, sequences, interlocks, PID and ON/OFF control and also the

acquisition and monitoring. The role of the computer shall be two fold.

 It acts as a window to the process for the operators who shall monitor and control the plant

through the displays and keyboard.

 It also acts as a supervisor to the process by performing higher end data processing such as

report generation, historical data storage and transfer. The printer shall be used for taking the

hard copy / printouts of these reports.

System shall be capable of Simplicity in servicing and maintenance with easily replaceable of any

modules and should be user friendly. The system to be supplied with scalable controllers and

I/O's all with a common design environment in addition to a scalable HMI solution. The system

shall accommodate the addition of HMIs, front-end computers and field devices.

Necessary security would be considered at various levels and the below configurable fail-safe

options shall be considered for each output module:

• Drive to predetermined analog output or de-energize for a digital output.

• Maintain the last good output value for an analog or hold for a digital output.

System should have provision to change modules in remote I/O racks while the rack is powered

up without affecting communication to the other modules in the rack. Also I/O modules should be

capable of being added while system controllers are online.

System have provision to show dedicated alarm line on all operator displays showing either the

recent or oldest (configurable) with highest priority & unacknowledged alarm in the system. The

system / line to be cleared when there are no unacknowledged alarms for the operator to

process. If multiple alarm/change of state conditions occurs, subsequent messages shall

overwrite the display if they are higher priority. As subsequent alarms are displayed, the previous

alarm information shall move to an unacknowledged alarm list awaiting acknowledgment by the

operator. The system should have facility to filter or group alarms.

All Graphical displays should be capable of displaying machine status and diagnostics.

Bidder scope includes development of software application including Base Graphics, Mimics, Logs

& report format generation.

The MIS system shall be provided with 25 % Spare tag license and source codes for the same

shall be provided in the name of Purchaser. The MIS shall have the facility / capability of

interfacing with MES / SAP as a different layer as an ERP package in future.

THE MIS REPORTS SHALL BE AS PER FUNCTIONAL REQUIREMENTS.

 Equipment operating Status Reports

 Equipment power Generation & Consumption reports

 Equipment Run Hours Reports

 Maintenance reports

 Equipment Fault Count reports

 Summary Reports

 Plant Functional Reports (TR Generation etc.)

 Plant Performance reports

The important data and status of cold rooms shall be transferred to the control room and

displayed at the operating station.

Sensors will be checked for open and short circuit conditions. Failure of sensor / transmitter shall

be indicated by the control system through over / under range facility & not lead to stoppage /

suspension of the corresponding control system.

Necessary provisions shall be made available in the system to enable exchange of important

operational data to the Dairy’s MIS system in a compatible format. This will be finalized while

deciding the report formats, MIS.

The successful Bidder’s OEM shall develop application software including data base graphics,

mimics, logs and report format generation etc.

The successful Bidder’s has to supply necessary hardware and software for automation as per

functional requirement and control philosophy proposed.

The automation system (including Ethernet network or equivalent open protocol) shall be tamper

proof and have adequate security system / safeguards (hardware / software based) to prevent

external un-warranted influence.

Refrigeration plant supplier shall be responsible to make available to Liquid Milk Plant (LMP)

supplier various data / information pertaining to Refrigeration Plant in a compatible format for

further integration with Main MIS.

Adequate provisions shall be made for spare inputs and outputs. Supply and installation of all

necessary sensors, indicators, cabling, etc is included in the scope.

The supplier shall submit the detailed architecture for the automation system proposed by him

(without deviating from the basic configuration and the functional requirement) in the bid. All

hardware / software licenses & source codes shall be transferred in the name of Purchaser.

The supplier shall provide necessary manuals and documents, including submission of I/O List,

loop diagram, logic diagram, specification / data sheets and other necessary drawings in printed

and electronic medium in multiple sets for approval of purchaser.

All PC’s shall have Microsoft office software. Successful bidder has to provide soft copy of all

Microsoft OC and office License key thro separate mail. The MS office License keys to be

purchased in the end user name ie RAJKOOT Dairy

The supplier shall provide necessary training for Operators, systems engineers and maintenance

CPU (Central Processing Unit)

Distributed Control System (DCS) / high-end smart PLC System shall be used for centralized

control and operation of the plant. The proposed CPU shall achieve the following:

 Safer and easier plant operations /monitoring at one central place from plant room.

 Load sharing / auto sequencing of compressor.

 Auto Sequencing/duty cycling and optimizing the operation of condensers & pumps and

liquid ammonia pumps & solenoid valves.

 Superior information availability through accurate reports related to complete refrigeration

plant operation, energy consumption, plant performance, the compressor maintenance

requirement and other MIS information related to refrigeration plant as per the requirement

 Higher flexibility to modify the control strategy to suit process changes

 Higher output and reduced production losses by maintaining the plant parameters

accurately at the optimum level

The DCS / high-end PLC System & communication network offered shall have open architecture

and shall use common / related engineering tool for operator station, automation system,

communication system, engineering system and I/O etc. Sub systems shall be integrated

together with standard & proven networks with fully optimized & standard open & secure

All the components shall use single database for DCS. In case of high-end PLC, it may have

separate database for PLC & HMI. All communications shall be digital with very quick response for

efficient operation, monitoring, control of various systems of the plant.

System offered shall be suitable for future expansion/up- gradation.

Original License version of software to be used and handed over to Purchaser Successful bidder to

ensure that future up gradation of system software also possible

The main control system shall be housed in suitable cabinets with 20% spare capacity and

suitable for expansion modules to accommodate additional equipment at a later stage without

All the basic control functions such as analog, discrete element controls shall be performed by the

system. This includes logic, sequences, interlocks, PID and ON/OFF control and also the

acquisition and monitoring.

Comprehensive self-diagnostic features shall be provided to facilitate easy fault location and

detection of failure without individually checking each module. On-line testing facility of control

system while the unit is in operation shall be provided with suitable indication for easy

identification of faulty module. Cut cables and faults shall initiate an operator alarm with a soft

The process/final control element interface section shall comprise of various signal interface cards

suitable for digital communication with intelligent field devises/third party devices, intelligent

actuator/sensors and distributed field I/O stations for connectivity with field devices having hard

wired signals including MCC feeders. The power monitoring unit for MCCs and VFD may be

directly connected with the filed run bus.

The instruments would be connected through field I/O stations in case of conventional

instruments / control valves. The communication with field devices (including third party) /

instruments shall be digital / deterministic & suitable for configuration from control room. All

connections with third party / instruments should be parallel & in case of failure of one unit, the

other should not be affected.

Sensors will be checked for open and short circuit conditions. Failure of sensor/transmitter shall

be indicated by the control system through over / under range facility & not lead to stoppage/

suspension of the corresponding control system.

Auto-Off-Manual with over-ride facility shall also be provided with a selector switch. In auto

mode, the control system shall execute entire applicable software as per programmed interlocks

and timing cycles. In manual mode, the status of various control devices such as motors, valves,

etc. can be forced to change to ON or OFF position as desired by the Refrigeration Plant Engineer-

in-charge. However, this shall be password protected.

Necessary provisions shall be made available in the system to enable exchange of important

operational data to the Dairy’s MIS system in a compatible format. This will be finalized while

deciding the report formats, MIS.

The PLC (Programmable Logic Controller) shall be with real time process control of scanned and

retrievable memory of required programs and operating systems; the storage of hours runs for

compressors, pumps, number of starts, system run time, etc. and these shall be accessible to the

The system shall cater to both the digital (on/off inter-locking) and Analog (continuous

monitoring of temperature, flow etc.) inputs and outputs. The system shall have adequate

capacity for storage of all important plant operation and performance data over a long period (12

month or finalized during detailed engineering). Facility for transferring/writing of data in

compatible format to CD/DVD shall be provided.

The CPU shall have all necessary logic and software required including compressor system

optimization and energy calculations. The system will automatically calculate the Daily

Refrigeration Effect. The CPU shall incorporate and confirm to normal industry standards to

maintain accuracy of data transmission and shall have accessories to eliminate power spikes,

fluctuations, etc. which may affect system integrity. The CPU shall also carryout orderly automatic

start-up and shut-down in logical sequence. It shall also have provision of desired safety,

operational interlocks, etc.

The main control system shall be housed in suitable cabinets. The computer, printer shall be table

mounted in the control room. Necessary computer furniture included in the scope of the work. All

this basic control functions such as analog, discrete element controls shall be performed by the

system. This includes logic, sequences, interlock, PID and ON/OFF control, timer, counter and

also the acquisition and monitoring. The role of the computer shall be two fold. It acts as window

to the processes for the operators who shall monitor and control the plant through the displays

and key board. It also acts as a supervisor to the process by performing higher end data

processing such as report generation, historical data storage and transfer. The printer shall be

used for taking the hard copy/printouts of these reports.

Indicator cum recorder for continuous monitoring and recording of the temperatures in each

compartment of all the Cold Storages shall be provided. Suitable spare channels shall be available

for future expansion.

The CPU shall include hardware and software to maintain an accurate internal clock and calendar

to record time, date, etc. Time and data shall be recorded for all events i.e. alarms, faults, etc. on

the display and a printer.

The CPU shall include latest version with higher capacity communication ports capable of

communicating with compressor control panels, visual display unit, data retrieval, etc. to transmit

all statistical and alarm data to printer, together with facilities to provide at least the following

data and record the same

• All cold rooms, ante room temperatures & All ACU’s running status.

• All liquid refrigerant pumps operation status.

• Liquid refrigerant temperatures, liquid level and pressure in LP accumulators.

• Condenser water sump temperature and all Condenser Fan & pump running status

• Refrigerant condensing temperature at the condensers.

• Ambient dry bulb, wet bulb temperature and RH.

• Chilled water temperature and Pressure in each compartment of FF Chiller, supply and

return temperatures in supply/return headers. Falling Film Chiller refrigerant evaporating

pressure and temperature.

• Chilled water temperature at inlet and outlet side of Individual I.B.T.

• Suction and discharge gas temperatures on high stage compressors.

• Suction and discharge pressure on high stage compressors.

• All compressor running status & RPM of compressors

• Compressors slide valve positions & Comp Main Discharge Headers pressure

• Oil pressure and Oil differential pressure of all compressors

• Oil inlet and out let temp of Oil coolers

• Thermo-siphon oil cooler inlet / out temperatures oil & refrigerant for all compressors.

• Economizer suction pressure, liquid inlet & sub cooled out temperature

• Auto Air Purger’s complete system Log

• Ammonia Gas leak detection system’s complete status

• Defrost cycle log

• Alarms of faults and its acknowledge

• Any other parameters which are required for monitoring.

High resolution 36” or above color TFT-LCD Monitor shall be provided as Workstation in the

Refrigeration Control Room, which shall serve the purpose of Programming and Interacting with

the PLC, as well as to display various dynamic screens / mimic diagrams, etc.

The monitors shall display following type of information/data/screen as selected through key

board and optical mouse.

• Dynamic process mimic with valve and pumps status indication.

• Bar graph display for continuous channels such as temperature and PID loops.

• Alarm summary.

• Trend displays of important process variables both as real time trends & historical trends.

• Tabular displays for logging of (instantaneous) process variable values.

• Screens showing complete automation architecture with node/card-wise fault indication.

• Screens for scaling adjustments of all analog transmitter

Two number ES cum OS system and third one for Report purpose with MIS Server. System with

Core I−7 processors with 64 bit operating system of Window 10 Professional, Min 8 GB DDR RAM

and 1 TB Hard disk and 36” monitors with all the required software’s shall be provided. All the

Three Operating stations and MIS PC shall have DVD RW/R facility for data, Backup activity. All

the CPUs have EEPROM for backup storage.

Each monitoring / control terminal shall remain fully capable of assessing any plant data thus, will

function as a single window for operation and monitoring. Each terminal shall be independent

with its support hardware including adequate local memory for resident database. The resident

data will be continuously updated at all terminals. The software shall support Multi Screen

Printer shall be used for the purpose of taking hard copy/ printouts of log sheet shift-wise, daily

operating details, shift-wise/daily consumption & performance reports and also listing/ logging of

important process parameters.

THE CENTRAL CONTROL DESK IS ALSO EQUIPPED FOR FOLLOWING FUNCTIONS:

 CAPACITY CONTROLLER AND SEQUENCING OF COMPRESSORS

The necessary hardware and software for inter communication amongst the compressor control

Panel (CCP) of all screw compressors for parallel operation/optimum load sharing / capacity

control, auto sequencing, etc, are in this scope of contract, including provision in software for

adding two more similar screw compressors in future. Each CCP shall have facility to put on

auto/manual mode.

The system shall control the load sharing and sequencing of all compressors, which are selected

on auto mode. The duty cycling for the compressor shall be based on historical data and the

system shall carry out the sequencing of compressor automatically identifying the leader and the

follower for obtaining equitable work distribution.

The selection/allocation of high stage screw compressors for particular duty, as well as capacity

control and sequencing of all the screw compressors operating in parallel, is through the central

computerized compressor control unit (CCPU), in communication with the local CCP of all

compressors. The selection/allocation of compressors for a particular duty is manual, whereas

capacity control and sequencing is done automatically by CCPU.

The CCPU shall ensure that when two or more compressors are operating (in each stage), no

compressor shall operate under 50% capacities. However, if only one compressor is operating

and there is cooling demand, it shall be allowed to operate up to 10% capacity.

The CCPU shall control the duty selection and sequencing of all compressors when they are in an

"Automatic" mode of operation. The duty cycling for the compressor shall be based on historical

data and the CCPU shall carry out the sequencing of compressor automatically identifying the

leader and the follower for obtaining equitable work distribution. The CCPU shall also have

provision (both software & hardware) to add minimum of one compressor in each stage of the

system later on.

The capacity control system shall work in the following manner (typical for each stage)

• After the 1st Compressor is fully loaded to 100% the 2nd Compressor will switch on.

• As soon as the 2nd Compressor is switched on, the 1st Comp. will get unloaded to 50%.

• The 2nd Compressor will now hunt between 50% and 100% depending on the load.

• As soon as the 2nd Compressor is 100% loaded it will send a signal and the 1 st Compressor,

which will now start hunting between 50% and 100% depending on the load.

• After both 1st & 2nd Compressors are 100% loaded the 3rd Comp. will get switched on.

• As soon as the 3rd Compressor (future) is on, the 2nd Compressor will be unloaded to 50% (1 st

Compressor remains on 100%).

• 3rd Compressor (future) will now hunt between 50% and 100%.

• Once the 3rd Compressor (future) is also loaded on 100% the 2 nd Compressor will be hunting

between 50% and 100% (1st Compressor remains on 100%)

AUTOMATION OF THE VFD OF CONDENSER FAN MOTOR:

The condenser fan shall be provided with VFD drive. Operation of the fan shall be automated as

per condenser manufacturer’s recommendation to optimize the system performance and energy

conservation. Necessary sensors, controls & instruments also included in the scope of work.

The refrigeration plant bidder shall provide and ensure that maximum demand monitoring system

of refrigeration MCC will be communicating with the centralized PLC and shall be programmed

such that if maximum demand is reached, this system shall shut OFF any of the identified loads in

a logical sequence, as well as switch ON the same after the demand drops to specified level.

Audible alarm shall also be provided.

Depending on the sophistication of the individual compressor control panel, the CPU functions may

be reduced to cover only those not available on the compressor panels.

The CPU shall have all the necessary logic and software specified including compressor system

optimization and energy calculations. The CPU shall incorporate normal industry standards to

maintain accuracy of data transmission and shall have accessories to eliminate power spikes,

fluctuations, etc. which may affect system integrity. The CPU shall also carryout orderly

automatic start-up and shut-down in orderly sequence. It shall also have provision of desired

safety, operational interlocks, etc. However, automation system shall be dispatched to site only

after testing by simulation so that minimum time is taken in its installation at site, interfacing and

operation of the Refrigeration plant.

All equipment, system and accessories furnished shall be from latest proven product range of

established / reputed manufacturers and shall conform to applicable national and international

standards. The design of various control systems and related equipment shall adhere to the

principle of failsafe operation implying that loss of signal, loss of power supply or failure of any

component will not lead to hazardous conditions, while at the same time, prevent occurrence of

false and unrelated trips.

The instruments / control system shall be suitable for environmental conditions that are normally

prevailing in India. All equipment / system / sub-system etc. shall be fully tropicalized.

All the Personnel Computers (PC) shall have latest configuration at the time of ordering. The

system software will preferably be based on open architecture and shall support the latest

processing platform. For networking TCP/IP or ISO-OSI model will be in use. It shall be latest

object oriented software, which result in fully scalable system. Original license version of the

latest release of software shall be used. The computer, printer shall be table mounted in the

SCOPE OF AUTOMATION HARDWARE : 1 LOT

Intelligent Automation / Control system of SCADA system for proposed system to hook-up in

existing system

AUTOMATION SOFTWARE (SYSTEM AND MIS SOFTWARE)

The system software will be based on open architecture/protocol and shall support minimum 64-

bit processing platform. It shall be latest Intelligent Automation / Control system of SCADA

system for proposed system to hook-up in existing system

The following one set of Communication Network Accessories, Signal / Instrument Cables/ Wires

& Related Items to be considered as bidder scope and to be supplied

• Ethernet cable / Fibre Optic cable(6 core) – 1 Lot

• Field run bus / similar bus cable – 1 Lot

• Switches – Giga bit, manageable as per network design with UPS Power supply (Ciso or

• Converters with fiber optic to Ethernet converter (Gigabit Switch) Interfacing Units for third

party devices/instruments etc. – 1 Lot

• Remote I/Os complete with communication & power unit – 1 Lot

• Hardware based security device – 1 Lot

• Other hardware – as per requirement

• All instrument/signal cables/wires shall be shielded/screened type. Details of accessories to be

finalized during detail engineering as per tender & functional requirement.

GENERAL POINTS FOR PROCESS TRANSMITTERS (TEMPERATURE / PRESSURE) & FLOW METER

Temperature & Pressure Transmitters:

 The transmitters shall be provided as per requirement for Refrigeration system having best

accuracy / reliability, as available in the market and the hard wired signals (4-20 mA) shall be

connected with automation system through I/O stations. The transmitters shall have field

diagnostic / configuration facility. The transmitters shall have separate local digital indicators

as per requirement.

 Measuring ranges of transmitters shall be selected in such a way that the rated value of the

measuring variables appears at approx. 50-80% of the span. Accuracy of the process

transmitters should be plus or minus 0.2% (minimum) of measured value or better.

 The sensing elements and internal parts shall be constructed with AISI 316. In case of stock

and corrosive fluid application, diaphragm seal type transmitter with capillary is foreseen. The

output of the Process Transmitters shall be 4-20 mA HART. The power supply for Process

Transmitters shall be 24 VDC, 2 wire.

 There shall be temperature and pressure transmitter for Ammonia lines each stage, chilled

water supply and return lines LP receiver, accumulator, economizer etc. Scope includes

Pressure transmitter for all pump out lets &necessary Temperature Transmitters for all Cold

rooms & Air Conditioning Rooms which comes under Refrigeration contractor scopes.

 The contractor to quantify the number of such transmitters required, based on the order as

well as functional requirement/standard engineering practice & provide accordingly.

Temperature Elements :

 All Temperature Sensors Elements shall be of Duplex type with SS 316 sheath (sanitary

type) and MgO filled. Depending on temperature ranges, Pt-100 Resistance Temperature

Detector (RTD) or thermocouple shall be used.

 Thermocouple / RTD heads, with chain holder, shall be of the waterproof type, with duplex

terminal block, gasketted cover and stainless steel chain. Screwed covers shall be used.

 Thermometers shall be of digital type. All cold rooms local digital temperature indication

(large display, clearly visible in day light at reasonable distance) shall be provided in

addition to the monitoring at central PLC panel. Supplier shall provide necessary technical

details of the system offered, such as number of digits, colour, digit size, accuracy,

housing details, etc.

 Digital type humidity indicators shall be provided in the comfort air conditioning rooms to

display the RH locally as well as transfer the same to CPU.

GENERAL NOTE: For All Transmitters and Elements, The contractor to quantify the number of

such transmitters required, based on the order as well as functional requirement/standard

engineering practice & provide accordingly

Process Switches:

 Local switches where ever required in Refrigeration system or their contractor scope for

pressure, differential pressure, temperature, level, proximities etc. shall be having best

reliability & accuracy as available in the open market & provided as per requirement. The

hard wired signals shall be connected with automation system through I/O stations. The

switches shall be suitable for Refrigeration application. The level switches shall be tuning

fork type. The contractor to provide the number of such switches, based on the order as

well as functional requirement/standard engineering practice & provide accordingly

GENERAL POINTS TO BE NOTED FOR CONTROL FUNCTION & INSTRUMENTS

Control Function

The functions and sequences described are specific to equipment proposed in this specification.

BIDDER also may suggest alternative method, but to be responsible for equivalent functions of

tender specification.

Interlocking for any operation of compressors shall be based on

 The related Cooling Water Flow Switch (if any), Condenser Fan & Pump and providing

circuits are made.

 The Liquid Accumulator high level safety float is made, as per spex. (reverse acting

 Each Compressor runs subject to its safeties, and other functions as specified in Compressor

 By local PLC Panel Compressor Skid or Central Control Panel or as per approved

Interlocking for any operation of IBT System shall be based on

 The thickness controller shall give signal to close or open liquid line solenoid valve, to

maintain the set thickness of ice on the coil.

 A.O.M. switch shall be provided to have the facility Auto-Off-Manual.

 The interlock as set on the IBT face plate of SCADA shall operate/control and monitor.

 Ammonia Liquid supply is cut-off when the set thickness of ice on the coils is achieved

 IBT face plate on SCADA shall have provision for operating/controlling and monitoring of

agitators of each compartment.

Interlocking for Cooling Water System (Fan Coil / AC Units) shall be based on

 Water supply to a condenser shall be tapped from nearest soft-water header. Water flow to

each condenser sump shall be controlled as per tender spex.

 Water supply to a condenser requires simultaneous operation of a condenser pump, and a

cooling fan. Electrical selection shall be possible in the same way and interlocking is

required in the order stated above. A proving circuit through the related flow switch is

 Each motor in the system, pump or fan, has a corresponding A-O-M selector switch and On-

Off push button station effective only in Manual selection from main MCC. Each starter has a

 For Actuation, subject to all of the sequenced equipment being in the Auto mode, the

selected combination of motors is started from an On-Off push button station in the plant

General Points for Control System / Equipment to be noted

 Supplies and installation of Plant mounted items including compressor control panel, central

control processing unit, cool room evaporator control panels etc. shall be the responsibility

of the Bidder. Requirements for these items are described in conjunction with the respective

plant components.

 The MCC/switchboards provided by the Bidder will incorporate equipment necessary for the

functioning of the control system.

 The Bidder shall furnish details of requirements for activation of control circuits as part of

the particulars of switchboards and control panels.

 All equipment, system and accessories furnished shall be from latest proven product range

of established/reputed manufacturers and shall conform to applicable national and

international standards. The design of various control systems and related equipment shall

adhere to the principle of “fail safe” operation implying that loss of signal, loss of power

supply or failure of any component will not lead to hazardous conditions, while at the same

time, prevent occurrence of false and unrelated trips.

 The instruments/control system shall be suitable for environmental conditions that are

normally prevailing in India. All equipment / system / sub-system etc. shall be fully

tropicalized. The average indicative conditions are:

Ambient temperature – 55 °C

Relative humidity – 95 % at < 55 °C

10.INSTRUMENTATION & SAFETY SYSTEM

Pressure Gauges: Pressure gauges shall be of Bourdon tube type, conforming to the requirements

of IS:3624. Also in front of various cold rooms are to be provided with one set of Digital

temperature Indicators each.

Necessary instruments for operation of the plant to be provided & installed as per requirements.

Field Instruments shall be suitable for area in which these are located / installed and all field

instruments shall be weatherproof, dust tight and corrosion resistant with Protection Class IP-65.

The minimum accuracy of instruments shall be as under:

Electronic transmitters : ± 0.2 % of FSD

Pressure & temperature gauge : ± 1.0 % of FSD

Conductivity transmitter : ± 0.5 % of FSD

Level gauges : ± 5.mm of the reading

The repeatability of pressure, temperature, level and flow switches shall be ± 2.0 % of FSD

Transmitter of all analog instruments shall be provided near sensors. All Instrument /

Communication cable shall be laid in separate cable tray / conduit.

Measuring ranges of transmitters to be designed & selected in order to achieve best accuracy of

measured value (in the measurement range).

Field instruments shall be suitably mounted, supported and terminated in local junction boxes.

Die cast aluminum or stainless steel casing shall be used as case material in general.

Temperature stub to be welded on process pipe / vessel and shall match with thermo well process

connection and size. Thermo well shall be drilled out of bar stock and the length & construction

shall comply with process requirement / relevant standards with suitable MOC.

All field instruments / equipment shall be provided with stainless steel (SS) tag plates with

engraved tag no. and service description. The tag plate shall be secured to the instrument /

equipment with SS chain.

All gauges on the refrigerant system, whether in contact with refrigerant or oil, shall have steel

elements and shall withstand without effect pressure of 1.5 MPa. Gauges elsewhere shall have

bronze elements.

Control & Instrument (C&I) equipment to be supplied with necessary protection technique against

electrostatic discharge and radio frequency interface, as per international codes and standards.

Safety earthing and C&I System earthing shall be separate. Safety earth bus shall be connected

to main plant earth pit. Separate earth pit/s shall be provided for system earth bus (electronic

earth). Electronic earth shall be cabled directly to the corresponding earth bar.

All instruments shall have proper access to reach for future maintenance & all readable

instruments shall be clearly visible unassisted.

All Pressure gauges shall be of Bourdon tube type, conforming to the requirements of IS:3624.

Calibration of gauges shall be as per SI metric units: refer IS: 10005. The scale range shall be

approximately 1.5 times the normal working pressure. Gauges reading refrigerant pressure shall

be calibrated additionally with saturated refrigerant temperature.

Connection of gauges to the related equipment shall be through an isolating valve or cock of

appropriate type. When on low temperature items, the connection shall be of sufficient length to

ensure that the gauge does not incur condensation.

Digital temperature indicators of approved make, of ranges suitable for indicating temperatures in

cold store (large display, clearly visible in day light at reasonable distance) shall be provided in

addition to monitoring at central PLC panel. The Bidder shall have to provide necessary technical

details of the system offered, such as number of digits, colour, digit size, accuracy, housing

Digital type humidity indicators where ever required shall be provided in the comfort air-

conditioning rooms to display the RH locally as well as transfer the same to central PLC panel.

Analogue thermometers shall be of dial type with vapour or gas pressure actuation. In vessels or

pipelines, wells shall be provided, filled with oil of appropriate grade.

Types of Gauges:

Refrigerant Compressors for LP, OP, HP etc. 100mm dial, oil-filled.

Condensers, Liquid Receivers 100mm dial, weather-proof casing oil

Purger, Oil Rectifier, Filled

Liquid Pump Discharge, 100mm dial. Oil filled.

Liquid Accumulators: in weather proof casing

Chilled Water Pump Discharges 150mm dial, weather-proof casing, Oil filled

Types of Thermometers:

Refrigerant compressor: Suction, 100-mm dial. in weather proof casing

Discharge, Oil & Liquid condensing

Cooling water flow lines: at condensers, 100-mm dial, weather-proof casing

chilled water pump discharges

Condenser sump 100-mm dial, capillary bulb, weather-proof casing

Each cool rooms, deep freezes, air lock, Digital temp. indicators (Large display)

and each air conditioned rooms

The above remote location local gauges/ Temp indicators are in addition to displays required in

Bidder to consider one set spare Pressure and Temp Gauges/ Thermometers of each

calibration range in the group.

 Electric Hoist

Bidder has to supply Electric hoist with track & complete with rating motors for entire length of

compressor room area above compressor & motors including extension for existing compressor

also (In case if Two rows of compressors in machine room, then Two sets Hoist to be provided)

for maintenance work of compressor and to slide either side for ease of maintenance point of

view. Since it is being PEB building necessary Vertical/ Horizontal supports also considered/

provided by Bidder.

 Capacity : 3 Tons each for each run

 Lifting capacity : 6 –m lift

 Minimum I-Beam size for run : 200 x 100-mm

The scope of this bid also includes supply, installation and demonstration of following safety

a. Two sets of Ammonia gas mask (with oxygen cylinder for 30 min), in conformity with

IS:660 and provided with a wall-mounted lockable enclosure approved by the purchaser at

an accessible location just outside the refrigeration plant room and

b. 2 sets of Air tight safety suits.

c. Drench shower with eye / face wash with fountain

d. Fire Extinguisher -2 Sets of ABC type of 5 to 6 Kgs each ( one at PLC room and second at as per

location decided by RAJKOOT Dairy)

11. COMPRESSOR OIL & CONSUMABLES

The system shall be located outside the compressor room suitable to charge ammonia from the

cylinder and shall consist of Two sets of quick mounting attachment each with stop cum check

valve, flexible piping and end connection suitable for the cylinder and charging port of ammonia

loading station Ammonia pressure gauge, Filter.

First charge of compressor oil for the proposed all compressors including standby as well as first

change of Oil as per OEM recommendation including for standby compressors also. Scope includes

sufficient quantity of ammonia gas for total refrigeration system commissioning.

RECOMMENDED MINIMUM SPARES FOR MAIN EQUIPMENTS

SL. NO. DESCRIPTION QTY. UNIT

a. HIGH STAGE COMPRESSOR ( -2 & -10°C )

1. Oil Filter Element 2 No.

2. Coalescer Element 2 No

3. Gasket Set 1 No.

4. O Ring Set 2 No.

5. Directional Valve 1 No.

6. Pressure Transmitter 1 No.

7. Temperature Transmitter 1 No.

8. Solenoid Coil for compressor 2 No

b. EVAPORATIVE CONDENSER

1. Pump Seal Kit 2 Set

2. Nozzles kits 50 Set

c. Automation System

1. Input and Output Cards 2 No.

2. Analog Input Card 1 No.

3. Power Supply Card of highest rating installed 1 No.

4. Compressor PLC ( Micro Logic 1400) 1 No.

d. Field Instruments

1. Level Switches for Accumulator 1 No.

2. Pressure Transmitter 1 No.

3. Temperature Transmitters 1 No.

4. Digital Indicator cum senor 2 No.

LIST OF APPROVED MAKES FOR MAJOR COMPONENTS

ITEM DESCRIPTION PREFERRED MAKE

1. Screw Compressor MYCOM / GRASSO / HOWDAN ( SCREW BLOCK)

2. Motor SIEMENS / ABB / CROMPTON GREAVES

3. Electronic Soft Starter /VFD SIEMENS / ALLEN BRADLEY / L&T / DANFOSS

4. Evaporative Falling Film type Condenser FRICK INDIA / OMEGA ICEHILL

5. Falling Film Chiller OMEGA ICEHILL /BUCO / FRICK INDIA

6 a. Liquid Ammonia Pump – Canned Type FRICK INDIA / HYDRODYNE / HERMETIC

6 b. Liquid Ammonia Pump – Opened Type FRICK INDIA / TH.WITT

7. Chilled Water Pump GRUNDFOS / WILO

8. Automatic Air Purger DANFOSS / GEA / MANIK / FRICK

9. Water Pipes TATA / JINDAL / ZENITH / MST / KALYANI

10. Forced Draft Coolers FRICK / STAR COOLERS / GUENTNER / GOEDHART

/ HELPMAN / KUBA /ALFA LUVE

11. Decorative Fan Coil Unit FRICK INDIA / STAR COOLER / BLUE STAR

12. EPS / PUF Slab Insulation Material FRICK INDIA / STAR COOLER / BLUE STAR

13. Saddles For Cold Insulation LLOYDS / RINAC / METECNO / FRICK

14. Refrigerant / Oil Pipes SUPERTHERM (LLOYDS) / BEARDSELL/FRICK

15. SS Pipes & Tubes TATA / JINDAL / KALYANI / MSL / ISMT

16. Ammonia System Valves (All Types) PARKER / HERL-KIRLOSKAR / DANFOSS

17. Water Valves SAUNDERS / L&T / AUDCO / BDK / INTERVALVE /

18. SS & MS Structural Channels & Angles SAIL / TATA STEEL / ESSAR

19. MS Plate SAIL / TATA STEEL / RINL / JINDAL / ESSAR

20. Flow Switch – Non Mechanical Type DANFOSS / SWITZER / IFM / E&H / IFB /

ANDERSON NEGELE

21. Liquid Level Controller / LP/HP/OP Cut-outs / Solenoid

DANFOSS/ PARKER / AMERICAN

22. Vortex / Magnetic Flow Meter E&H / EMERSON / SIEMENS / HONEY WELL

23. Automation System ROCK WELL / SIEMENS / SCHNEIDER

24. Human Machine Interface (Hmi) ALLEN BRADLEY (ROCKWELL) / SIEMENS /

25. Reflux type Ammonia Liquid Level Gauge REVATHI / R.K.DUTTA

26. Dual type Pressure / Temperature Gauges ‘H’ GURU / WIKA / WAREE / JUMO

27. PID Controller EMERSON / HONEYWELL / YOKOGAWA

28. Digital Temperature Sensors / Indicator / Controller TATA HONEYWELL / YOKOGAWA

29. Harmonic Filter L&T / SIEMENS / SCHNEIDER /EMERSON / APC

30. ACB / MCCB / MPCB SIEMENS / SCHNEIDER/ L&T

31. Switch Fuse Units SIEMENS / SCHNEIDER/ L& T / ABB

32. MCB HAGER/SIEMENS/MDS–LEGRAND/SCHNEIDER

33. LT Armoured Power Cables KEI / FINOLEX / POLYCAB / SBEE / HAVELLS

34. LT Steel Braided Copper Power & Control Cables LAPP KABEL / SBEE / RR KAREL

35. Protective Relays / Overload Relays / Bidders / Timers L & T / SIEMENS / SCHNEIDER / ABB

36. Push Button TEKNIC / L & T / SIEMENS / SCHNEIDER

37. LT Power Cable (Copper) from MCC to all India LAPP / CONCAB / SBEE

38. LT Copper Control Cables LAPP / CONCAB / SBEE / FINOLEX / POLYCAB

39. Signal & Instrument Cables LAPP / CONCAB / SBEE

40. Terminal Block ELEMEX / WAGO / CONNECTWELL

41. HRC Fuse L & T / SIEMENS / EE / GE POWER / C & S

42. Measuring Instruments MECO / L & T / SIEMENS / IMP / AE / RISHAB

43. Resin Cast / Poly Carbonate Current Transformer KAPPA / BHARTI / L&T / NEWTEK / PRECISE / AE

44. Rotary Selector Switches L&T / SIEMENS / SALZER / KAYCEE

ITEM DESCRIPTION PREFERRED MAKE

45. Power Capacitors EPCOS / SCHNEIDER / SIEMENS / L&T

46. Cable Lugs DOWELLS / COMET / LAPP KABEL

47. Mass Flow Meter EMERSON / E & H / SIEMENS

48. Temperature / Pressure Transmitter EMERSON / E & H / SIEMENS / IFM

49. Level Transmitter EMERSON / E & H / SIEMENS / IFM

50. Conductivity / PH Transmitter I / O EMERSON / E & H / SIEMENS / IFM / YOKOGAVA

51. RTD EMERSON / E & H / SIEMENS / IFM / YOKOGAVA

52. Cable Gland DOWELLS / COMET / LAPP KABEL / BRAVO

53. LT Energy Meter / Digital Voltmeter / Ammeter L & T / SIEMENS / SCHNEIDER / INDIA METER

54. Vapour Proof Light Fittings For Cold Store PHILIPS / WIPRO

55. APFC Relay BELUKE / EPCOS / L&T / SIEMENS / PHASITRON

56. Cable Tray INDIANA / MEK / PILOCO / ELCON / METALICA

PRESSINGS / OBO / SWASTIK

57. Personal Computer HEWLETT-PACKARD / DELL / IBM

58. Analog Ammeter & Voltmeter RISHABH / IMP / MECO / AE

59. Digital Energy Meter SIEMENS / L&T / SCHNEIDER

60. Digital Power Factor Meter SIEMENS / L&T / SCHNEIDER

61. Ammonia STARDARD MAKE

62. Lubricating Oil for Compressor OEM OF COMPRESSOR / IOCL / HPCL / SERVO

65. Plug & Socket LEGRAND / CLIPSAL / BCH

66. Servo Voltage Stabilizer LOGICSTAT/SUVIK/VOLTAMP/CRYCARD/NEEL

67. Anchor Fastener HALTI / 3-M

68. Monorail / Chain Pulley Block BRAD / VGOR / INDEF / MMORRIES

69. Aluminium Cladding Sheet HINDALCO / BALCO

The makes specified above shall supersede the makes, if any specified elsewhere in the tender. If the

tenderer quoted with any alternative make other than specified above approved make, then it will be

purchaser choice to accept/reject.

DESCRIPTION PURCHASER'S SCOPE BIDDER'S SCOPE

CIVIL WORKS Necessary foundations for equipment Supply of necessary foundation bolts

based on the details provided by the along with the template, sub base,

equipment supplier. motor slide rails and all other

associated erection materials.

Civil work pertaining to the cable

laying, earthing pits, grouting of

various foundation bolts, cut-

openings in the wall, ceiling etc.

Patch up / finishing works,

specifically for the cut-openings in

the wall, ceiling etc. Masonry cable

trench in plant room

Civil works civil building for cold

store / Incubation Room, as per

layout drawing. Flooring over floor

insulation with protective curbing for

WATER LINE From soft water header near Extension of soft water from one

Refrigeration Plant. point in refrigeration & cold store

area for all equipments considered

under Refrigeration work viz

condenser make up lines as per

Distribution to all the FDC for

Defrosting requirement. Tapping to

be taken from nearest source of

DRAIN LINES The drain and bleed points of

condenser as a common line to be

extended upto nearest drain point.

All other drain lines to be extended

and terminated at the nearest point

DESCRIPTION PURCHASER'S SCOPE BIDDER'S SCOPE

CHILLED WATER Chilled water supply and return Starting from outlet of Ice Bank tank,

LINES headers from proposed chilled supplier shall provide suction header,

water pump Header out let to strainers, valves, NRVs, discharge

process and return back to header header, Return line tapped with a

near Falling Film Chiller. valve to Falling Film chiller with

necessary isolation valves.

Provision in Chilled water Header Scope includes Two Nos isolation

with necessary Butterfly valves to valves in Main Suction and Discharge

tap lines to Decorative type Fan coil header for future chilled water

units for MCC room and rooms ( requirements.

Only for these rooms Fan coil units

are Refrigeration bidder’s scope) Supply of one set flow meter in

return Main Header Chilled water

Taping to decorative fan coil units for

MCC and rooms with necessary

POWER Main Power cables of Aluminum Main Power cables of Aluminum from

from PCC to proposed MCC of MCC to panel.

suitable size and run with

termination of cables on both sides MCC & Distribution of power ( copper

conductor) and control cables from

Electricity during erection at one MCC to various equipments and from

common point at proposed dairy to various cold rooms.

plant on chargeable basis at actual

cost on unit rate Chemical / Normal Earthing for total

refrigeration system including Main

earthing for refrigeration proposed

APFC & AHF Panel

Lighting, Air curtains Feeders and

DESCRIPTION PURCHASER'S SCOPE BIDDER'S SCOPE

POWER Temporary Cabling ( with necessary

safety norms to be followed) from

common point to machine room and

erection area with junction boxes for

erection purpose.

For erection purpose, Electricity to be

provided by Purchaser at Actual Unit

REFRIGERATION Entire refrigeration piping for the new

PIPING equipments and suitable provision for

hooking up future equipment with

necessary isolating valve

AUTOMATION Co-ordinate with main refrigeration Complete working & upgrade in Existing

system supplier to communicate PLC System.

data exchange from central

automation system with

refrigeration PLC Panel (in

compatible and Modbus).

STRUCTURAL Any structures Platform cum Necessary cable trays & supports

overhead bridge in open area and required inside the trenches including

across the roads and Pipe cum grouting and chequered plates for trench

service bridge between Utility block cover.

and processing block

Maintenance Platform (as per tender

Access ladder and protective hand spex ) for Proposed condenser, LP

railing to reach condenser area. Receiver, Falling Film Chiller and IBT

Any RCC Leg and RCC Platform to

rest F F Chillers Cable trays and support structure and

inside cold rooms shall be SS 304 Trays /

Nose angle for Cable trenches Fiber Polycab

FIRST CHARGE OF Additional First charge of sufficient

GAS AND OIL quantity Oil and Ammonia Gas for

commissioning of plant

First change of Oil for proposed

compressor as per OEM

recommendation.

FF CHILLER Wall all-around of Falling Film

Chiller, if required and RCC Leg and

platform for Falling Film Chiller

Free water for leak testing and tank

Brick wall all around IBT Tank and

TECHNICAL DATA ON THE MAJOR EQUIPMENTS

Description –10 / 38 °C

A. HIGH STAGE SCREW COMPRESSOR

4. Capacity (Without economizer)

5. Capacity (With economizer)

6. Saturated Suction temperature

7. Saturated Discharge temperature

8. Consumption of power at shaft (without eco.)

9. Consumption of power at shaft (with eco.)

10. Speed of the compressor

11. Super heat considered

12. No. of compressors

13. Test Pressure (Pneumatic in Kgs/ Cm2)

B. OIL SEPARATOR

1. Type (Horizontal / Vertical)

2. Shell dia in mm

3. Shell height in mm

4. Material of Construction (Shell)

5. Oil Carryover

6. Type of oil filters

7. Low oil level cut outs

8. Sight Glass for oil level

9. Design, working & Test Pressures (Pneumatic in

1. Type (Horizontal / Vertical)

2. No. of coolers

3. Heat Rejection Capacity

4. Shell Diameter in mm

5. Shell height / length in mm

6. Tube diameter in mm

7. Tube thickness in mm

8. Material of Construction (Shell)

9. Construction of tubes

11. Oil inlet temperature

12. Oil outlet temperature

13. Design, working & Test Pressures (Pneumatic in

Kgs/ Cm2) on shell and tube sides

D. EVAPORATIVE FALLING FILM CONDENSER

3. No. of Condenser

4. Heat Rejection Capacity

5. Total Nos. of Plate

6. Plate Thickness

7. Material of Construction (Plate)

8. Water Flow rate

9. Water Inlet Temperature

10. Water Outlet Temperature

11. No. of Pump

12. Pump Rating

14. Motor Rating for each fan

15. Air displacement rate of each fan

16. MOC of Basin

17. Refrigerant Holding volume

18. Sump Volume

19. Design, working & Test Pressures of the FF Plate

(Pneumatic in Kgs/ Cm2)

20. Total Weight (Shipping Weight)

I. FALLING FILM CHILLER

1. Make & Model

3. Heat Rejection Capacity

5. Water inlet temperature

6. Water outlet temperature

7. Controls provided on water side

8. Controls provided on refrigerant side

9. Pressure drop on water side

10. Design pressure

11. Total Heat transfer area in Sq. Meter

12. Ammonia volume

13. Test Pressure

14. Design temperature of Gasket

15. MOC of plate

16. MOC of Gasket

17. No. of Plate

18. Balancing tank size

19. Volume of Balancing tank

20. MOC of Balancing Tank

LIST OF TECHNICAL DOCUMENTS, DETAILS AND DRAWINGS TO BE FURNISHED ALONG WITH THE BID

FAILING WHICH TENDER WILL BE TREATED AS NON-RESPONSE AND REJECTED WITHOUT ANY NOTICE.

1. The bidder is required to furnish following drawings, technical and documents along with the

2. Layout drawings showing proposed refrigeration plant equipments like condenser, HP receiver,

LP accumulator, pumps

3. Detailed machinery layout for the compressor room, control room, cold rooms.

4. P & I diagram for the ammonia refrigeration system, cooling water & Chilled water piping with

5. G A drawings for the electrical power distribution

6. Automation system configuration

 Also bidder has to furnish the following

1. Chilled water load (indirect system)

2. Direct expansion system load

3. Room-wise cold room load calculation sheet

4. Histogram for chilled water load demand / direct expansion load and the refrigeration input

from the compressors (hourly basis showing peak demand, on 24-hour scale)

5. Calculation for the condenser capacity required

6. Electricity consumption data with operating time schedule for all the equipment and histogram

(hourly basis showing peak demand, on 24-hour scale)

7. List of technical Literatures covering general and technical information for all the major

equipment offered. viz compressor, condenser, FDC, pumps, purger, Falling Film Chiller,

control valves, instrumentations, PLC automation system, soft starter, VFD,

8. Bar chart for project execution

9. Category-wise staff requirement for operating the plant

10. List of recommended spare for one year operation with break-up cost in commercial bid

ANNEXURE – VIII

Latest Applicable Indian Standards for Ammonia, Electrical & Mechanical

IS: 660 Safety code for mechanical refrigeration

IS: 661 Code of practice for thermal insulation of cold storages

IS: 662 Anhydrous ammonia

IS:702 Industrial bitumen

IS:778 Gunmetal gate, globe and check valves for general purposes

IS:1703 Ball valves including floats for water supply purposes

IS:1239 Mild steel tubes, tubular and other wrought steel pipe fittings

IS:2041 Steel plates for pressure vessels used at moderate and low temperatures

IS:2379 Colour code for the identification of pipelines

IS:2494 V-belts for industrial purposes

IS:2629 Hot-dip galvanizing of iron and steel

IS:2825 Code for unfired pressure vessels

IS:3233 Glossary of terms for safety and relief valves

IS:3503 Steel for pressure vessels and welded structures

IS:3601 Steel tubes for mechanical and general engineering purposes

IS:3615 Glossary of terms used in refrigeration and air-conditioning

IS:3624 Pressure and vacuum gauges

IS:3696 Safety code for scaffolds and ladders

IS:4049 Formed ends for tanks and pressure vessels

IS:4503 Shell and tube type heat exchangers

IS:4544 Code of safety for ammonia

IS:4671 Expanded polystyrene for thermal insulation purposes

IS:4736 Hot-dip zinc coating on steel tubes

IS:4831 Units and symbols for refrigeration

IS:4984 HDPE pipes for potable water supplies, sewage and industrial effluents

IS:5428 Gauge glasses

IS:5905 Specification for sprayed Aluminium and zinc coating on iron and steel surfaces.

IS:6392 Steel pipe flanges

IS:8008 Injection moulded HDPE fittings for potable water supplies

IS:8172 Vertical steel ladders

IS:8188 Treatment of water for industrial cooling systems

IS: 8910 General technical delivery requirements for steel and steel products

IS:9520 Nominal sizes for valves

IS:9623 Selection, use and maintenance of respiratory protective devices

IS:9762 Polythene floats for ball valves

IS:9890 General-purpose ball valves

IS:10005 SI units

IS:10234 Recommendations for general pipeline welding

IS:11132 Ammonia valves

IS:11329 Finned type heat exchanger for room air conditioner

IS:11330 Refrigeration oil separators

IS:11714 Steel Tubes for Heat Exchangers (Part 1)

IS:11714 Steel Tubes for Heat Exchangers (Part 2)

IS:11714 Steel Tubes for Heat Exchangers (Part 3)

IS:11714 Steel Tubes for Heat Exchangers (Part 4)

IS:11714 Steel Tubes for Heat Exchangers (Part 5)

IS:12436 Preformed rigid Polyurethane (PUR) and Polyisocyanurate (PIR) foams for thermal

IS:16678 Refrigerating Systems and Heat Pumps — Safety and Environmental Requirements

Part 1 Definitions, Classification and Selection Criteria

IS:16678 Refrigerating Systems and Heat Pumps — Safety and Environmental Requirements

Part 2 Design, Construction, Testing, Marking and Documentation

IS:16678 Refrigerating Systems and Heat Pumps — Safety and Environmental Requirements

Part 3 Installation Site

IS:16678 Refrigerating Systems and Heat Pumps — Safety and Environmental Requirements

Part 4 Operation, Maintenance, Repair and Recovery

IS:3646.1 Interior Illumination

BS:3059 MS tubes for vertical condenser

BS:874 EPDM of Thermal conductivity (Part 2)

BS:476 Fire propagation test (Part 6)

BS:476 Surface spread of flame test (Part 7)

ASTM E: 84 Smoke density Test

ASTM B: 31 Refrigeration Piping and Heat Transfer Components

Refrigeration Field Service

ASTM B: 32 Specifications for Solder Metal

ASTM B: 280 Specification for Seamless Copper Tube for Air Conditioning and

ASTM B: 813 Standard Specification for Liquid and Paste Fluxes for Soldering Applications

of Copper and Copper Alloy Tube and Fittings

ASTM B: 16.22 Wrought Copper and Copper Alloy Solder Joint Pressure Fittings

ISO: 4126 Safety devices for protection against excessive pressure –

Part -1: Safety valves

IS:325 Three-phase induction motors

IS:1248 Electrical measuring instruments and their accessories

IS:2705 Current transformers

IS:2968 Dimensions of slide rails of electric motors

IS:3480 Flexible steel conduits for electrical wiring

IS:4064 Air-break switches

IS:8544 Motor starters for voltages not exceeding 1000 V

IS:9537 Conduits for electrical installation

IS:10028 Selection, installation & maintenance of transformers

IS:10118 Selection, installation & maintenance of switchgear & control gear

SP: 30 National Electrical Codes

C. REFRIGERATION PIPING AND HEAT TRANSFER COMPONENTS – ASME B

Bidders to follow other Standards which specified in electrical work isolation, Annexure – IX

Latest revisions shall be followed in all cases.

DUCTING, DUCT INSULATION FOR AIR-CONDITIONING SYSTEM

IS:655 Specification for metal air duct.

IS:227 Specification for galvanized steel sheet

SMACNA Sheet metal and air-conditioning Bidders, National Association Standard for low

velocity and high duct construction

Note: Relevant Standards / Codes of ASHRAE / IIAR or other Equivalent International Standards

/ codes are also acceptable, subject to approval.

A. GENERAL INSTRUCTION FOR SUPPLY & INSTALLATION

 Successful bidder has to submit all drawings in time review including S.D drawing intelligent

 Successful bidder has to submit all pipe & cable route drawing in time before starting of

 All drawing in a identification with serial no. of drawing, Title of the drawing, revision no. to

be submitted for approval and size of drawing shall be A0, A1, A2, A3, A4.

 Min 3 Sets of approved drawing to be submitted to purchaser.

 All Equipments to be started / processing only upon complete approval of drawing including

automation screen and SCADA screen details.

 Purchaser has right to modify if necessary, even after drawing approval and successful

bidder has to accept and do necessary accordingly as per site in-charge.

 Suppliers should arrange necessary equipments tools consumables on his own for erection

purpose except electricity and water which shall be as per tender clause.

 All loading, unloading of equipments, shifting and keeping of all despatched equipments in

safe condition is successful bidder scope and purchaser will not take responsible for any

damage and theft.

 All equipments to be stored in safe and rain protected shed with proper safety by successful

B. SPECIAL INSTRUCTION FOR CARRYING OUT MECHANICAL INSTALLATION

General installation mainly for positioning and installing all the production, miscellaneous and

service equipment as per approved layout drawings and as per the contract.

a) Supply and installation of structural platforms and tables where ever required Plus Supply

and installation of all Refrigerant and Water piping including ancillary items as per Battery

Limit in Annexure-V.

b) Insulation and cladding of piping, equipment including supply of materials.

c) Interconnections of all services and Electrical works with equipment as per requirement and

battery limits.

d) Proper Provisions/ Guide lines for expansion work.

e) Clean up of work site as well as supply and removing of all cleaning chemicals and

f) Testing, commissioning and Trail run and to attend Trouble shooting.

g) Painting where ever required as per approval of colors by the Purchaser.

h) Training of personnel as per period indicated in tender.

GENERAL INSTALLATION

 Scope of supplier work includes positioning, installation of the equipment as per approved

drawing with necessary provision for expansion work, insulation and cladding, cleaning,

 All the civil works, foundations are shall be arranged by the owner as per supplier’s drawing.

The supplier shall be responsible for all correct reference lines / codes for various equipments.

 Civil contractor shall carry out all foundation, holding centering, scaffolding and they are

responsible for remove and clean the site.

 FRP moulded Grading platform / Structural (MS BOX –Galvanized ) supports shall be required

for various equipments as per tender specification to be part of supplier scope and any plat

form, Bridges / gantry if required to be arranged by Purchaser as per Battery Limits.

 Pipe Welding & Testing

 The piping should be TIG welded for 1 st route of run and subsequent runs may be carried

out by ARC welding process.

 The successful bidder has to testing of all pipes like raw water for make-up, chilled water,

ammonia piping. Piping should be cleaned inside very neatly and flushed after erection

under supervision of Purchaser/ Federation staff.

 All refrigerant and water line piping supports, guides, anchors and hangers, structural

should be provided supplied by the Contractor. All the supports to be get prior approva l by

Federation Representative.

 Cutouts details in the floors and slabs for installing various pipes are to be provided by the

contractor immediately upon receipt of the purchase order.

 All the chilled water pipelines shall be insulated by PUF insulation with suitable thickness

as per tender specification.

Positioning of Equipment

 The work involves preparation of proper access for moving of the various equipments

including their fittings from the stores/ Yard place where they have been unloaded, to the

place of erection, de-crating and placing on the foundation wherever required. All the civil

foundations are as per the manufacturer/Suppliers drawings and to be done by Purchaser.

The Supplier shall place the equipment and carry out final adjustment of the foundations

including alignment and dressing of foundation surface, embedding and grouting of anchor

bolts and bedplates. The Supplier shall be responsible for obtaining correct reference lines

for the purpose of fixing the alignment of various equipments from master benchmarks

 Tolerances shall be as specified in equipment manufacturer's drawings or as stipulated by

the Purchaser's Engineer. No equipment shall be permanently bolted down to foundations or

structure until the Supplier has checked the alignment and witnessed by the Purchaser. The

Supplier set the equipment properly as per approved layout, drawings and manufacturer's

instructions. The Supplier has to provide/ supply all the necessary foundation or anchor bolts and

bedplates if required without extra cost if these have not been provided with main equipment.

 The Supplier by his own cost has to supply, fix and maintain, during the erection work, all

the necessary cantering, scaffolding, staging required not only for proper execution, but also

for protection of the surrounding plant and equipment. The Suppliers shall take out and

remove any or all such cantering, scaffolding, staging planking etc., as occasion shall

require or when ordered to do so and shall fully reinstate and make good all things disturbed

during execution of the work, to the satisfaction of the Purchaser, but without any extra

 Structural platforms shall be required to provide access for various equipments as per

tender specification. Tables shall be required for handling products. These platforms and

tables shall be fabricated keeping stability and other functional as well as aesthetic looks to

be considered requirements while getting approval from the Purchaser.

GENERAL GUIDELINES FOR PIPING INSTALLATION

All piping systems shall comply with the latest editions of Indian standards as well as State Govt/

Central Govt. Laws / acts as applicable.

SCOPE OF SUPPLY AND ERECTIONS

 The Supplier shall supply all piping materials like pipes, fittings, flanges, measuring

instruments and all other items as shown in the Process flow diagram P&I drawing, Tender

specifications and schedule of quantities including for provision for future equipments. All

the pipes & fittings and insulation material etc. should be of class and make as approved by

the Purchaser. The Suppliers should furnish the details of makes selected by him with in the

list of makes provided in the Annexure –IV and Adhere to makes items as per tender

 For items not specifically mentioned in the tender or items having more than one Preferred/

approved make, then successful bidder has to obtain prior approval from purchaser for the

makes before initiating procurement/ fabrication and it approval of makes shall be strictly as

per purchaser final approval.

 Scope of erection for pipes also as per P & I Drawing, Tender spex and all pipe connections

with valves, flanges, Blind end to be done as per approved drawing including for future

equipments provisions.

 Bidder scope includes necessary primary elements for flow measurement, controls etc and

to perform necessary internal machining of pipes for installing orifices, nozzles, control

TESTING OF PIPING

 The Supplier shall test sample piping systems including valves and specialties and

instruments as required. All piping shall be internally cleaned and flushed by the Supplier

after erection in a manner suited to the service.

 For hydrostatic testing and water flushing, the Supplier shall furnish necessary pumps,

equipment, instruments and piping etc, if required.

 The recommended testing pressures for various pipelines are as follows.

DURATION ALLOWABLE

SR. TEST PRESSURE TEST

NAME OF TEST PRESSURE

NO. KG/CM² MEDIUM

(HOUR) DROP KG/CM²

I Water Pipelines

1. a Raw water, Soft Water, RO Water 8 Water 1/2

1. b Chilled water and Glycol 8 Water 1/2

II Ammonia Pipelines

2. a Suction 16 Nitrogen 24

2. b Discharge 24 Nitrogen 24

2. c Vacuum Test for complete Absolute Zero Vacuum 48 NIL

Refrigeration Plant

OTHER GUIDELINES FOR ERECTION

 Colour code shall be used to identify pipe material. The Supplier shall be able to identify on

request all random piping prior to field fabrication.

 The Supplier shall be responsible for the quality of welding done by them and shall conduct

tests to determine the suitability of the welding procedure by welder. Also Bidder has to

submit the Welders qualification certificate.

 All piping supports, guides, anchors, hangers, rollers with structural framework shall be

supplied and erected by the Supplier. Only Anchor fasteners of adequate size shall be

provided for anchoring supports from RCC structure and HILMIT Gun shall be used for

fastening the anchors. The kinds of pipe support like CI clamps, wooden saddles, roller

supports and support framework shall be as per the design approved by the Purchaser prior

to taking up the work.

 All piping shall be suspended, guided and anchored with due regard to general requirements

and to avoid interference with other pipes, hangers, electrical conduits and their supports,

structural members and equipment and to accommodate insulation and conform to buildings

structural limitations. It is the responsibility to the piping Supplier to avoid all interference

while locating hangers and supports.

 Anchors and/or guides for pipelines or for other purposes shall be furnished, when specified,

for holding the pipeline in position for alignment. Hangers shall be designed fabricated and

assembled in such a manner that any movement of the support pipes cannot disengage

 All piping shall be wire brushed and purged with air blast to remove all rust, mill scale from

inner surface. The method of cleaning shall be such that no material is left on the inner or

on outer surfaces, which will affect the serviceability of the pipes.

 Effective precautions such as capping and sealing shall be taken to protect all pipe ends

against ingress of dirt and damage during transit or storage. The outside of the steel pipes

(black) shall be painted with two coats of red oxide paint or as directed by the Purchaser.

 All the piping for chilled Water / Ammonia / Makeup / Drain Water piping shall generally be

of welded construction. Whenever welding is done for pipes of smaller size special care

should be exercised to avoid clogging of flow area with the welding material.

 SS304 box section pipe supports for the pipes passing thro process & packaging areas to be

provided by the supplier. Where pipes and clamps are of dissimilar material, barrier shall be

provided in between.

Spacing of utilities pipe supports shall not exceed the following:

Pipe Size Spacing Between Supports

Over 150-mm 2.5m

 Vertical risers shall be parallel to walls and column lines and shall be straight and in plumb.

Risers passing from floor to floor shall be supported at each floor slab by clamps or collars

attached to pipe and with a 15mm thick rubber pad or any resilient material. Where pipes

pass through the terrace floor, suitable flashing shall be provided to prevent water leakage.

Risers shall have a suitable clean out at a lower point and air vent at the highest point.

 Pipe sleeves at least 3mm thick, 50mm/100mm larger in diameter than the pipes shall be

provided wherever pipe passes through walls and slabs. Annular space shall be filled with

fibre glass and finished with retainer rings. MOC of sleeves shall be same as pipe MOC. No

extra payment shall be made on account of providing the sleeves.

 All piping works shall be carried out in a workman like manner, causing minimum

disturbance to the services, buildings, roads and structures. The entire piping work shall be

organized, in consultation with other agencies work, so that laying of pipe support, pipes

and pressure testing for each area shall be carried out in one stretch.

 Cut-outs details in the floors and slabs for installing various pipes are to be provided by the

contractor immediately after receipt of the purchase order, so as to make the cut-outs

ready by civil contractor.

 The contractor shall make sure that the clamps, brackets, clamp saddles and hangers

provided for pipe supports are adequate. Piping layout shall take due care for expansion and

contraction in pipes and include expansion joints wherever required.

 All pipes shall be accurately cut to the required size in accordance with the relevant BIS

code and burrs removed before laying. Open ends of the piping shall be closed as the pipe is

installed to avoid ingress of foreign matters. Where reducers are to be made in horizontal

runs, eccentric reducers shall be used for piping to drain fully. In other locations concentric

reducers may be used.

 All buried pipes shall be cleaned and coated with zinc chromate primer and bitumen paint,

then wrapped with three layers of fiber glass tissue, each layer laid in bitumen.

 Vent valve shall be provided with all high points in the piping system for venting. Vent valve

with vent blind shall with socket welding.

 Tee-off connections shall be through equal or reducing tees.

INSULATION OF PIPING AND EQUIPMENT

INSULATION OF CHILLED WATER/AMMONIA PIPELINES (COLD INSULATION)

 All the chilled water & ammonia pipelines shall be insulated by PUF pipe sections. The

insulation shall be carried out in the following manner:

 Before starting insulation work all pipelines shall be tested as specified.

 The surface of the pipes to be insulated should be properly cleaned.

 Hot bitumen of 85 / 40 or 85 /25 conforming to IS 702 should be applied uniformly @

kg/m2 on the surface of the pipes.

 A similar layer of bitumen should be applied on the inner surface and on the edges of the

Insulation sections.

 All joints should be properly sealed with bitumen.

 A thick vapour seal with hot bitumen @ 2.5 kg/m2 should be applied uniformly on the outer

surfaces of the pipe sections and allowed to dry.

 The thickness of insulation shall be as tender specified thickness for various lines sizes and

based on line temp.

INSULATION OF HOT WATER PIPELINES (HOT INSULATION)

 All the Hot line water pipelines shall be insulated by LRB and Eqt resin bonded pipe section

of specified thickness. The insulation shall be carried out in the following manner:

 Before starting insulation work all pipelines shall be tested as specified.

 The surface of the pipes to be insulated should be properly cleaned.

 Apply coat of Red oxide primer and fix LRB/ resin bonded pipe section as per specified

thickness and tightly to the pipes , butting all joints and tie with lacing wire

 It should be covered with GI Wire netting 20-mm x 24 SWG.

 In case the insulation does not achieve desired insulation properties, the entire insulation to

be re done at no extra cost to achieve desired results.

 In case of condensate return piping all the steps mentioned above shall be executed except

that thickness of the insulation shall be 25-mm.

INSULATION OF CHILLED WATER STORAGE ICE BANK TANK

 The surfaces shall be cleaned with the help of brushes to remove any loose particles.

 A coat of bitumen of 85/40 or 85/25 conforming to IS [email protected] kg/m2 shall be applied over

the flooring and walkathon sheets shall be press-laid to act as a vapour barrier.

 Bitumen shall then be applied on the walkathon sheets and one side and edges of the

insulation slabs to ensure total rate of 2.00 kg/m2 between contacting surfaces. The slabs

shall then be fixed in position, making sure that there shall be no joints between slabs.

 For double layers insulation bitumen shall again be applied on all contacting surfaces to

ensure a total rate of 1.5 kg/m2 between contacting surfaces.

 A coat of bitumen at 1.5 kg/m2 shall be applied over the insulation surfaces.

ALUMINUM/ SS /GI CLADDING

 The chilled water, ammonia, water Lines after insulations shall be covered by Aluminium

 Aluminum cladding will be done with 24 gauge Aluminum sheet with proper grooves and

overlaps and screwed in position with 12 mm self-tapping parker screws.

 Where ever SS cladding required to be covered by SS ( for pipe lines passing thro

Processing Hall and its corridor and inside cold rooms)

INTERCONNECTIONS OF SERVICES

 The Supplier shall lay service piping and provide connections with the equipment complying

strictly with the equipment manufacturers' instructions. The Supplier shall also carry out all

the interconnecting service piping with the various items of plant/system. The work shall be

complete with capillary piping if required and connections with instruments and controls

supplied with the equipment.

 The Supplier shall also carry out electrical connections for equipment with the control panels

including equipment lighting as per the wiring diagrams of the equipment Supplier.

Connection shall be made for small electrically operated devices on equipment installed as

accessories to, or assembled with equipment. Connections regarding instruments, float

switches, limit switches, pressure switches, thermostats and other miscellaneous equipment

shall be done as per manufacturers' drawings & instructions.

GUIDELINES FOR EXPANSION WORK

 Plant shutdown shall be required for making tapings / interconnections of the new

equipment proposed to be installed under expansion with the existing equipment. These

shut downs should be planned carefully well in advance to enable the Purchaser to take

suitable actions for ensuring normal Plant operations. The details of shut downs; the

numbers and duration should be worked out and intimated to the Purchaser for approval.

The Supplier should ensure completion of all the necessary works well within the allowed

time so that no inconvenience is caused in regular operation and working of the existing

 Wherever the Supplier is required to work in existing plant area he should take due care

and extra precautions to ensure absolute cleanliness and minimum hindrance for proper

working of the existing plant.

 The program for change over from existing plant system to new plant system should be

prepared by the Supplier and should be got approved by the Purchaser.

 During expansion work, the Supplier shall be required to carry out modifications, repairs /

replacement of the existing equipment. The alterations / modifications not specified in the

contract/order and or minor in nature requiring not more than 24 man-hours for each item,

will be carried out by the Supplier without any extra cost. ” However, if the modifications

are of major nature and if not specified in the Contract / Order, the Supplier shall be paid

for such works based on man-hour rates.

REGULAR CLEANING OF SITE WORK PLACE

 All soils, filth or other matters of an offensive nature taken out of any trench, drain or other

places shall not be deposited on the surfaces, but shall at once be carted away by the

Supplier from the site of work for proper disposal.

 The Supplier shall not store or place the equipment, materials or erection tools on the drive

ways and passages and shall take care that his work in no way restricts or impedes traffic

or passage of men and materials during erection, The Supplier shall without any additional

payment, at all-time keep the working and storage area used by him free from

accumulation of dust or combustible materials, waste materials rubbish packing, wooden

planks to avoid tire hazards and hindrance to other works .

 lf the Supplier fails to comply with these requirements in spite of written instructions from

the Purchaser, the Purchaser will proceed to clear these areas and the expenses incurred by

the Purchaser in this regard shall be payable by the Supplier. Before completion of the

work, the Supplier shall remove or dispose off in a satisfactory manner all scaffolding,

temporary structures, waste and debris and leave the premises in a condition satisfactory to

the Purchaser. Any packing/packaging materials received with the equipment shall remain

as the property of the Purchaser and may be used by the Supplier on payment of standard

charges to the Purchaser and with prior approval of the Purchaser. At the completion of his

work and before final payment, the Supplier shall remove and shall restore the site to neat

workman like conditions at his cost.

CLEANING ANY UNWANTED CHEMICALS & LUBRICANTS

 The necessary quantities of cleaning chemicals, lubricants etc., required for the installation,

commissioning, testing and start-up of all the equipment till handing over are to be supplied

the Supplier and nothing extra would be paid for these.

TESTING, COMMISSIONING AND START UP

 The Supplier shall operate, maintain and give satisfactory trial run of the plant for the

design product satisfactorily for a maximum period of one week or as mutually agreed by

Supplier / purchaser of the plant at the rated output. The Supplier should carry out all

rectification of damages / defects and routine troubleshooting during commissioning with

the help of purchaser’s staff.

 During this period, Supplier shall incorporate/execute necessary minor modifications during

the trial period for maximizing operational efficiency. The Supplier should also execute

minor modifications as may be suggested by the Purchaser, if required. The Supplier shall

suggest recommended log sheet proofread for recording necessary operating data and pass

it on to the Purchaser in proof of satisfactory rated output and performance of the

equipment/plant.

THE COMMISSIONING SHALL ALSO INCLUDE, FOR ALL THE EQUIPMENTS, THE FOLLOWING:

 Field disassembly and assembly where ever required.

 Clean out of lubrication system including chemical cleaning wherever required.

 Circulation of lubricant to check flow.

 Clean out and check out of all the service lines

 Check out and commissioning of instruments, equipment and plants, filtering of transformer

and other oils so that if deteriorated, they shall attain the required properties/standards,

specified tests in this regard must be carried out by approved authorities and their

satisfactory reports submitted to the Purchaser before start-up.

 Recharging or make-up filling of lubricant oil up to the desired level in the lubrication

system of individual machine.

 Operation in empty condition to check general operation details wherever required and

wherever possible.

 Closed loop dynamic testing with water wherever required.

 Operation under load and gradual load increase to attain maximum rated output

TROUBLE SHOOTING DURING THE TRIAL PERIOD

 The Suppliers shall demonstrate proper working of all mechanical and electrical controls;

safety and protective device, in presence of the Purchaser's engineer and the same should

be duly recorded.

 After conducting testing, in case a particular equipment is not working properly or not giving

rated output the Supplier will furnish a detailed report to the Purchaser stating therein the

detailed account on the performance of the equipment with possible reasons for improper or

not working of the same.

 The Purchaser after receipt of report from the Supplier would take up the matter with the

manufacturers and if required would invite the representative of original manufacturers. In

case the Purchaser considers that the non-performance of equipment is only due to

inexperience of the Supplier, then the charges incurred for the manufacturer's

representative visit would be debited to the Supplier’s account.

 Further, before the commencement of testing or commissioning, the Purchaser reserves the

right to invite the original manufacturer's representative at the cost of the Supplier for start-

up help, assist and guide the Supplier during commissioning in the following cases:

o The Supplier has no previous experience of commissioning and start-up of the similar

o The Purchaser is of the opinion that the Supplier is not capable to commission and start-

up of certain specific equipment.

 However, in either of the cases the manufacturer's representatives would be called with

prior information to the Supplier and the Supplier will have to extend all co-operation to

such representatives in good spirit and in the interest of the work.

 After satisfactory commissioning and start-up the Supplier shall keep his representatives

under whose supervision the Purchaser's staff shall be operating and maintaining the plant

and equipment for a minimum period of one month. The Supplier’s representatives should

be present at all times during the running and operation of plant and equipment. During this

period the Supplier / Suppliers shall ensure proper working of complete plant and

equipment and attend any works required to be done and shall also take complete

responsibility for proper operation and maintenance of the complete plant and equipment.

 All the equipment / machineries like motors, pumps, HT / LT panel, transformer, switch

boards, starters, junction boxes, isolators, storage tanks, supporting structures, pipe

supports and MS / GI pipes and all exposed and visible iron parts included in the scope of

erection / commissioning shall be given double coat of paint of approved shade over a

double coat of anticorrosive primer wherever necessary irrespective of the condition of

original paint of equipment / machineries / structures / supports. All surfaces wherever

required must be properly cleaned from scale, dirt and grease prior to painting.

Spray painting must preferably be used on all the equipment / machineries and wherever

practicable. Suitable and necessary cleaning/ wiping of sight / dial glasses, other non-

metallic parts, flooring, walls and other surfaces which have been spoiled by paint during

painting must also be carried out by the Supplier.

 Lettering and other markings, including capacity and flow direction markings, shall also be

carried out by the Supplier on the tanks, pipe lines, starters, motors, isolators and wherever

else necessary, as directed and as per the standard practice of installation. ISI colour codes

and colour charts as mentioned in Tables must be adhered to.

 Supply of all paints and all other materials required is included in the scope of supply of the

Supplier under this contract/order.

PAINTING OF EQUIPMENT & STRUCTURAL WORK

All MS platforms / pipe supports / pipe bridges and any other : Dark admiral Grey

structures Shade No. 632 of BSI

Hot water set, water pumps, geared motor of tanks and vats : Original colour

Refrigeration compressors and air compressors : Original colour

Air handling units of cold store and deep freeze and butter Packing, : Aluminium paint

making room and lab including ducting

Refrigeration plant receiver : Dark admiral gray

HT and LT panels : Original colour

LT distribution switchboards : Original colour

COLOUR CODE FOR PIPELINES AS PER IS 2379-1963

Services Application Ground colour First Band

1. Cooling Water 1. Ref. comp. Sea green 217 French

Jacket cooling blue

piping for Ref.

2. Hot Water 1. Milk pasteurizer Sea green 217 Light

2. Defrosting line

3. Drinking Water Water lines for Sea green 217 French 166 Signal

water coolers blue Red

4. Treated Soft water lines Sea green 217 Light

5. Cold Water Chilled water Sea green 217 French

supply & return blue

6. Untreated Raw water lines Sea green 217 white

7. Soft Water All plant and Sea green 217 Light

Equipment brown

Services Application Ground colour First Band

8. Steam HP steam lines Aluminum French

9. Lubricating Oil Oil piping lines Light

10. Drainage All drain lines from black

11. Ammonia All ammonia gas & Signal red

TRAINING OF PERSONNEL

The Supplier for operating the plant as may be deputed by the Purchaser shall train necessary

staff. The personnel will be associated for the training during the installation, testing,

commissioning and start-up period and the training tenure shall be extended for a minimum

period of one month from the date of commissioning and start-up.

CODE OF PRACTICE FOR PAINTING SERVICE PIPELINES

On Non-Insulated Pipe Line & Insulated Pipeline without Aluminium Cladding

 Ground colour to be applied throughout the length of the pipeline.

 Colour bands to be applied near every valve and branch connection as well as in every room

near the entry.

Nominal Pipe Size Width of 1 Colour Band Width of 2 Colour Band

80 NB and below 100 mm 25 mm

350 NB and above 400 mm 100 mm

 On the 1st band a white arrow to be put to indicate the direction of flow.

 The arrows should be put on the bottom of the pipelines so that the same are visible from

below in case of horizontal bank of pipes and on sides in case of vertical bank of pipes.

 The valves should be painted with the same colour as the ground colour of the pipeline.

On insulated Pipe Line with Aluminium Cladding

 Ground colour to be applied in a length of 500 mm of the pipe all round near every valve

and branch connections as well as in every room near the entry. The complete length of the

pipeline should not be painted.

Nominal Pipe Size Width of 1 Colour Band Width of 2 Colour Band

80 NB and below 100 mm 25 mm

350 NB and above 400 mm 100 mm

 On the 1st band a white arrow is to be put to indicate the direction of flow of the fluid.

 The arrows should be put on the bottom of the pipelines, so that the same are visible from

below in case of horizontal bank of pipes and on sides in case of vertical bank of pipes.

 The valves should be painted with the same colour as the ground colour.

 The ground colours and the colours of the 1st and 2nd colour bands have been indicated on

the enclosed list for the pipelines carrying various types of fluids and gases. The list also

indicates the shade nos. of the colours to be used. In case the exact shade is not available,

the nearest possible shade in the same colour may be selected.

 Only synthetic enamel paint should be used for the painting and band markings on the

Pipelines and it should be ensured that the finish should be glossy.

 Where no colour bands have been recommended, only the ground colour is to be applied as

per the above procedure. If only one colour band is recommended the same should be as

per first band and applied on the ground colour. In case of 2 nos. colour bands, the 1st

band wide and second band wide as per the above table nd should be applied on the ground

 To avoid mixing of colours, it is recommended to apply the bands only after the ground

colour paint is dry and subsequently to apply the arrow only after the 1st band paint is dry.

C. SPECIAL INSTRUCTION FOR CARRYING OUT ELECTRICAL INSTALLATION

All electrical installation to be carried out as per the below Electrical standards

 Indian Electricity Act and Rules framed there under.

 Fire Insurance Regulations.

 Regulations lay down by the Chief Electrical Inspector of the State/State Electricity Board.

 Regulations lay down by the Factory Inspector of the State.

 Any other regulations lay down by the local authorities.

 Installation & operating manuals of original manufacturers of equipment.

Power Cables for HT & LT

For all HT Cables shall be Three core Aluminium conductor screened XLPE insulated armoured

shielded and PVC sheathed cables suitable for 11 / 22 / 33 KV, earthed system, conforming to

IS−7098 (Part-II) – 1988 amended up to as on date.

For all LT Power Cables to be used on 415 V systems shall be of 1100-volt Grade, Aluminium

Conductor Cables, XLPE insulated, PVC sheathed, armoured and overall PVC sheathed as per

Current carrying capacity of 300 sq.mm cable should be max 300 A per run and Voltage drop

should be ≤5 % to be considered.

o Conductor material - H2/H4 grade Aluminum to IS -8130/1984

o Armouring material – galvanized steel

o Type of armouring – Flat strip armour

o Max rated conductor temperature +90 °C

o Max allowable conductor temperature during short circuit + 250 °C

o Short circuit rating of conductor for the duration of 1 sec. (KA) –

o All power cable from MCC to Individual equipment’s shall be electrical (MCC Panel, Power &

Control Wiring, Cable Trays, earthing, etc.)

Complete Electrical distribution system shall be suitable to operate, control and maintain all the

parameters required for entire refrigeration plant / system & power will be provided in a single

incomer of MCC and from there Bidder has to consider for

o Distribution for the MCC to other panels and feeders

o Providing sufficient Box for termination of incoming cable (termination of incoming cable by

Separate MCC to be provided to house power feeders for all proposed refrigeration plant and cold

storage indoor unit feeders plus 20% spare feeders but not less than the following quantity. All

Spare feeders shall be provided with necessary internal wiring, MCCB/ MCB but without starters

For new equipment at Main MCC Panel:

FEEDER DETAILS AT MCC ( ALL SPARE FEEDERS ARE WITH STARTERS)

DESCRIPTION TYPE OF STARTER NO. OF FEEDERS SPARE FEEDER

1. ―5 °C Screw Compressor VFD

2. Condenser Fans 1 VFD/Soft Starter As Per As Per

3. Condenser Pump VFD/ Soft Starter Requirement Requirement

4. Condenser Fans 2 VFD/Soft Starter

5. Condenser Pump VFD/ Soft Starter

o Suitable feeder required for UPS, PLC panels as per requirement.

o Suitable feeder for feeding power to all refrigeration Sub-MCC’s

o Automatic power factor correction panels with heavy duty APP capacitors suitable for entire

o Automatic Active harmonic filter panel for the entire non-linear electrical load

BIS Standards for Electrical Erection

Following BIS Codes and other standards/codes relevant to the works under scope of the supplier

shall be followed. In absence of BIS codes equivalent / relevant IEC Codes shall be followed.

BUREAU OF INDIAN STANDARD CODES TO BE FOLLOWED FOR ELECTRICAL ERECTION

1 PVC insulated cables (light duty) for working voltage up to & − 694-1990 Part I & II

including 1100 volts

2 PVC insulated cables (heavy duty) for Voltage up to 1100 volts − 1554-1988 Part I

3 -- do -- for voltage 3.3 KV to 11 KV 1554-1988 Part II

4 Guide for marking of insulated conductors − 5578-1984

5 Code of practice for installation and maintenance of power − 1225-1983

cables up to and including 33 kV rating

6 Code of practice for earthing − 3043-1987

7 Recommendations on Safety Procedures and Practices in − 5216-1982 Part I

Electrical Work - Part I: General

8 Recommendation on Safety Procedures and Practices in − 5216-1982 Part II

Electrical Work – Part II : Life Saving Techniques

9 Code of practice for installation and maintenance of induction − 900-1992

10 Code of practice for selection, installation and maintenance of − 10118-1982

Switchgear and Control gear Part I,II,III,IV

11 Code of practice for selection, installation and maintenance of − 10028-1985

Transformers Part-I, II, III

12 Code of Practice for Electrical Wiring Installations − 732-1989

13 Guide for Testing Three-Phase Induction Motors − 4029-1967

14 XLPE Cables for working voltage up to and including 1100 Volts − 7098- 1988 Part I

15 ----do--- up to 33 KV − 7098 – 1988 Part II

16 General Requirements for Enclosures for Accessories for − 14772 -

Household and similar Fixed Electrical Installations

17 Specification for Electric Power Connectors − 5561-

18 Methods of Test for Cables − 10810 -

19 National Electrical Code − SP:30