REPAIR /MAINT OF CENTRAL/PACKAGE TYPE AC PLANTS INCL CERTAIN MISC WORKS AND MAINT OF DG SETS OF VARIOUS CAPACITY AT INHS KALYANI UNDER AGE E/M NO-I OF GE(UTILITY-I) VISAKHAPATNAM

Amount

M & L for de-scaling the shells and tube of condenser by circulating the RA111 organic compound after diluting with water at the appropriate ratio depending upon the scale depositions till removal of all the scale inside the copper tubes by removing both end covers, brushing/cleaning with nylon brush, removal of all scale deposits and degreasing with caustic soda, flushing out thoroughly, re-fixing the end covers along with with new gasket packing, replacing the wornout nut and bolts, washers etc and connecting the inlet and out let water connection checking of water leaks, of centraL ac plant of following capacity all as specified and directed.

M&L for servicing the Air handling units 8000 cfm capacity with and including dismantling units, sheet metal parts, blowing out the dust, chemical cleaning by spraying the organic based scale removing agent Vaniklin at the appropriate ratio till removal of complete dust & scale deposits in the fin area of evaporator coil, flushing through for proper air flow across the coil, cleaning of expansion valve; greasing of blower motor, checking of electrical connection, cleaning of air filters,,replacement of un-serviceable bearings, water drain lines, renewal of rusted sheet metal screws, all as specified and as directed by Engineer-in-Charge.

M&L for servicing the Air handling units 12000 cfm capacity with and including dismantling units, sheet metal parts, blowing out the dust, chemical cleaning by spraying the organic based scale removing agent Vaniklin at the appropriate ratio till removal of complete dust & scale deposits in the fin area of evaporator coil, flushing through for proper air flow across the coil, cleaning of expansion valve; greasing of blower motor, checking of electrical connection, cleaning of air filters,,replacement of un serviceable bearings, water drain lines, renewal of rusted sheet metal screws, all as specified and as directed by Engineer-in-Charge.

M&L for servicing the Air handling units of 5200 cfm capacity with and including dismantling units, sheet metal parts, blowing out the dust, chemical cleaning by spraying the organic based scale removing agent Vaniklin at the appropriate ratio till removal of complete dust & scale deposits in the fin area of evaporator coil, flushing through for proper air flow across the coil, cleaning of expansion valve; greasing of blower motor, checking of electrical connection, cleaning of air filters, water drain lines, renewal of rusted sheet metal screws,replacement of un serviceable bearings, all as specified and as directed by Engineer-in-Charge.

M & L for servicing to Reciprocating Compressor of Capacity 11 TR unit labour only for overhauling and servicing of AC compressor by strip opening of both end covers, cylinder head, cylinders connecting rod crank shaft, oil pump, side covers of bush bearing/ bush bearings etc complete. Inspecting the parts for serviceability and replacement only unserviceable worn out parts in the compressor, cleaning the System with Nitrogen gas for leak detection after flushing out the system vacuumization and charging only refrigerant gas, replacement of compressor oil and testing the unit on no load and full load condition all as directed by Engg-in-Charge.

Repair and servicing to Reciprocating Compressor of Capacity 8.5 TR unit labour only for overhauling and servicing of AC compressor by strip opening of both end covers, cylinder head, cylinders connecting rod crank shaft, oil pump, side covers of bush bearing/ bush bearings etc complete. Inspecting the parts for serviceability and replacement only unserviceable worn out parts in the compressor, cleaning the System with Nitrogen gas for leak detection after flushing out the system vacuumization and charging only refrigerant gas, replacement of compressor oil and testing the unit on no load and full load condition all as directed by Engg-in-Charge.

Repair and servicing to Reciprocating Compressor of Capacity 5.5 TR unit labour only for overhauling and servicing of AC compressor by strip opening of both end covers, cylinder head, cylinders connecting rod crank shaft, oil pump, side covers of bush bearing/ bush bearings etc complete. Inspecting the parts for serviceability and replacement only unserviceable worn out parts in the compressor, cleaning the System with Nitrogen gas for leak detection after flushing out the system vacuumization and charging only refrigerant gas, replacement of compressor oil and testing the unit on no load and full load condition all as directed by Engg-in-Charge.

M&L for complete servicing the condensing unit of 5.5 TR (Package Air conditioning unit ductable type), with and including dismantling the condensing units sheet metal body, blowing out the dust, spraying the organic based scale removing agent of Vaniklin at the appropriate ratio to the condenser fan area, till removal of complete scales & dust, flushing through for proper air flow across the coil, checking of all electrical connections, greasing of motor bearing, renewal of all corroded sheet metal screws, applying synthetic enamel paint over a coat of primer on the rusted portion, reassembling the sheet metal parts, and testing the unit all as specified and as directed by Engineer-in-Charge. Make: Carrier

M&L for servicing the Air handling units of 11 TR capacity (Package AC), with and including dismantling units, sheet metal parts, blowing out the dust, chemical cleaning by spraying the organic based scale removing agent Vaniklin at the appropriate ratio till removal of complete dust & scale deposits in the fin area of evaporator coil, flushing through for proper air flow across the coil, cleaning of expansion value; greasing of blower motor, checking of electrical connection, cleaning of air filters, water drain lines, renewal of rusted sheet metal screws, applying synthetic enamel paint over a coat of primer on the rusted portion and testing & commissioning the unit all as specified and as directed by Engineer-in-Charge.

All as per Item No.9 herein before but Air handling units of 7000 cfm capacity (Central AC).

All as per Item No.9 herein before but Air handling units of 4500 cfm capacity (Central AC).

All as per Item No.9 herein before but for AHU of 5.5 TR package type AC.

M&L for complete leak testing the in door and out door units, complete refrigerant pipe with Nitrogen gas, locating the leaks, rectify the leak by brazing/ welding and pressure testing the complete system for the 5.5 TR capacity of air cooled package AC system all as specified and as directed by Engineer-in-Charge:

All as per item No.13 here-in-before but 11 TR capacity

M&L for complete leak testing the in door and out door units, complete refrigerant pipe with Nitrogen gas, locating the leaks, rectify the leak by brazing/ welding and pressure testing the complete system for the 99 TR capacity of air cooled package AC system all as specified and as directed by Engineer-in-Charge:

M&L for complete leak testing the in door and out door units, complete refrigerant pipe with Nitrogen gas, locating the leaks, rectify the leak by brazing/ welding and pressure testing the complete system for the 120 TR capacity of air cooled package AC system all as specified and as directed by Engineer-in-Charge:

S&replace PCB Board for 11 TR package type AC unit as per directed by Engr in charge complete

S&replace condenser unit for 11 TR unit AC plant as per directed by Engr in charge complete

S&replace out door unit fan blade for 11 TR unit complete

S&replace out door unit fan blade for 5.5 TR unit complete

S&repalce out door unit fan blade for 8.5 TR unit complete

Supply and fix in repair " V "belts for AHU 120 TR SPA1120 . Make : Fenner

Supply and fix in repair " V "belts for AHU 120 TR SPA800 Make : Fenner

Supply and fix in repair " V "belts for AHU 120 TR SPA1150 . Make : Fenner

Supply and fix in repair " V "belts for AHU 120 TR SPA1437 . Make : Fenner

Supply and fix in repair " V "belts for AHU 99 TR PIX A 76 . Make : Fenner

Supply and replace damaged/ defective/ unserviceable MS ERW pipe 150mm dia bore, heavy grade laid in trenches or on ground/ vertically with welded joints including removing the rusted, broken old MS pipe including painting with two coats of synthetic enamel paint over a coat of zinc chrome primer. Make:- TATA/ JINDAL

Supply and replace damaged /defective /unserviceable MS ERW pipe 100mm dia bore, medium grade laid in trenches or on ground/ vertically with welded joints including removing the rusted, broken old MS pipe including painting with two coats of synthetic enamel paint over a coat of zinc chrome primer. Make:- TATA/ JINDAL

S&F butterfly valve 150mm dia with necessary rubber gasket, bolts, nuts and washer including taking out existing valve all as directed Make: Zoloto / L&T/ Audco

S&F butterfly valve 100mm dia with necessary rubber gasket, bolts, nuts and washer including taking out existing valve all as directed Make: Zoloto / L&T/ Audco

S&F in repair pressure gauge for condensor water pressure and chilled water pressure of 4 inch and with range of 0- 100 kg/cm2 including fixing accessory to existing pipe line complete.

S&F in repair Temprature gauge for condensor water line and chiller water line measuring with range of 20 to 50 degree celcius including fixing accessories to existing pipe line

M&L for taking down air curtain 4/ 6 feet of any make and carryout complete servicing & necessary repair to grills, replacing defective bearings/ bushes; greasing the motor and refixing in its original position & testing all as directed by Engineer-in-Charge.

M&L for taking down the defective unserviceable solenoid valve coil and supply & fixing of new solenoid valve coil suitable for 7/8” size valve, 220/230V 50 Hz all as directed by Engineer-in-Charge. Make: Danfoss/ Indfoss.

M & L for Servicing to compressor of mortuary cabinet of 2 TR capacity and takingout the compressor draining out old oil clean flushing and fill with cappila D oil and reassembling complete system incl brazing wiring etc and testing the system as directed by Engrs in Charge.

M&L for complete checking of leaks, rectifying the leaks, pressure testing as per the standard practice and flushing out the system with Nitrogen gas for mortuary units all as directed by Engineer-in-Charge.

M&L for vacuumizing and de-hydrating the system, supply & charging of R-407 C gas, testing & commissioning the system, tuning the system to obtain and maintain the temp of –15°C all as directed by Engineer-in-Charge.

M&L for taking down the defective sealed motor of air cooled condenser and supply & fixing of new sealed motor suitable for -2°C Mortuary Cooler condensing unit and testing all as direct by Engineer-in-Charge.

M&L for taking down the defective sealed motor of air cooled condenser and supply & fixing of new sealed motor suitable for -15°C Mortuary Cooler condensing unit and testing all as direct by Engineer-in-Charge.

M&L for taking down the defective sealed motor of evaporator and supply & fixing of new sealed motor suitable for -15°C evaporator fan and testing & commissioning all as direct by Engineer-in-Charge.

M&L for taking down the defective sealed motor of evaporator and supply & fixing of new sealed motor suitable for -2°C evaporator fan and testing & commissioning all as direct by Engineer-in-Charge.

M&L for taking down the damaged condenser fan blade of condensing unit of -2°C Mortuary Cooler and supply & fixing and testing of new suitable fan blade all as directed by Engineer-in-Charge.

M&L for taking down the damaged condenser fan blade of condensing unit of -15°C Mortuary Cooler and supply & fixing and testing of new suitable fan blade all as directed by Engineer-in-Charge.

M&L for taking down the damaged Evaporator fan blade of Evaporator unit of -15°C/ -2°C Mortuary Cooler and supply & fixing and testing of new suitable fan blade all as directed by Engineer-in-Charge.

M&l for taking down the defective Auto defrost timer of -15°C Mortuary unit and supply & fix new auto defrost timer and testing the function all as dircted by Engineer- in Charge

S&F in replacement, HEPA filter of size 600x600x150mm (99% down to 3 microns) to match existing filters of capacity chiller Make: Spectrum/ Carry air or equivalent.

S&F in replacement, Prefilter, box type of size 500x500x48mm (90% down to 10 microns) to match existing filters. Make: Spectrum/ Carry air or equivalent

S&F in replacement, bag type fine filter of size 500x600x300mm (99% down to 5 microns) to match existing filters. Make: Spectrum/ Carry air or equivalent.

S&F in replacement, Prefilter, box type of size 500x500x30mm (99% down to 5 microns) to match existing filters. Make: Spectrum/ Carry air or equivalent

M&L for servicing of FRP cooling tower by removal of complete scales, dirt etc. using chemicals, cleaning the sump, louvers, PVC fills, fan assembly, renewal of spray nozzles, renewal of nuts and bolts, and complete painting of the cooling tower as per the standard practice for 2 x 99 TR plant capacity cooling tower all as specified and directed.

S&F in replacement power contactor suitable for –15°C sealed compressor all as directed by Engineer-in-Charge.

M&L for repairing the –15°C Cold storage room insulated door, by replacing door beading, repair to door lock etc. all as required at site and as directed by Engineer-in-Charge.

M&L for complete servicing of FRP cooling tower by removal of complete scales, dirt etc. using chemicals, cleaning the sump, louvers, PVC fills, fan assembly, renewal of spray nozzles, renewal of nuts and bolts, and complete painting of the cooling tower as per the standard practice for 3x65TR plant capacity cooling tower all as specified and directed.

Supply and charge refrigerant gas R134A including replacement of materials like gasket/ ‘O’ rings/ washers for leak proof operation all as directed by Engineer-in-Charge. Make: Mafron/ Freon/ Floron

Supply and charge refrigerant gas R-22 including replacement of materials like gasket/ ‘O’ rings/ washers for leak proof operation all as directed by Engineer-in-Charge. Make: Mafron/ Freon/ Floron

Supply and charge refrigerant gas 404A including replacement of materials like gasket/ ‘O’ rings/ washers for leak proof operation all as directed by Engineer-in-Charge. Make: Mafron/ Freon/ Floron

M&L for dismantling defective induction motor of any make 415 V of any duty or any class of insulation from the bed duly coupled with pump, transporting to work shop, removing burnt out winding from stator, rotor and rewinding with suitable gauge super enameled copper wire of approved make and replacing driven end and non driven end bearings, insulation materials, varnishing, heating reassembling, testing and commissioning for the following capacities. Notes :- Motor removed for rewinding shall be overhauled completely and the quoted rate shall be deemed to be inclusive for the same.

a) 10 HP motor

b) 2 to 3 HP

Supply and replace ON LOAD changerover front operated 4pole 630 AMPS Make: L&T / Seimens / Schneider / Legrand / ABB / Havells

Supply and replace ML-2 Contactor 3pole operating voltage, 230 V, 50 Hz Make: L&T / Seimens / Schneider / Legrand / ABB / Havells

Supply and replace ML-3 Contactor 3pole, operating voltage 230 V, 50 Hz Make: L&T / Seimens / Schneider / Legrand / ABB / Havells

Supply and Replace Off Load Changeover including sheet metal encloser with side handle 630 Amps 4 pole 240 V Make: L&T / Seimens / Schneider / Legrand / ABB / Havells

Supply and Replace Off Load Changeover including sheet metal encloser with side handle 400 Amps 4 pole 240 V Make: L&T / Seimens / Schneider / Legrand / ABB / Havells

Supply and Replace MCCB 4pole 35 KA 400 AMPS Adjustable type Make: L&T / Seimens / Schneider / Legrand / ABB / Havells

Supply and Replace MCCB 4pole 25 KA 250 AMPS Adjustable type Make: L&T / Seimens / Schneider / Legrand / ABB / Havells

M & L for Removing the wornout duct insulation carefully , cleaning/preparation of surfaces and M&L for duct insulation (25mm MM THICK) with resin bonded fibre glass wool roll of density 24 kg/Cum, with factory laminated aluminium vapour barrier, thickness of insulation as specified and including the following:-a) M&L for cleaning the duct surface (to be insulated ) by scrapping carefully with wire brush etc. to make the surface completely free of millscale, dirt, dust, grease and other foreign materials, taking special care so that all duct joints are sealed against any leakage. (b) M&L for applying rubber based adhesive CPRX compound. (c) M&L for sealing of all longitudinal joints and circular overlaps with and including Aluminium foil tape 50 mm wide, to make the insulation leakproof. (d) M & L for securing the insulation with and including mechanically fastened nylon/ steel straps of size 12 mm/50 mm at maximum intervals of 1.2 mtr.

Supply and replace/topup compressor oil.as per OEM's recommendations all as specifeid and described.

Supply and replacement compressor suitable for 5.5TR capacity package type A/C unit including sealing of the compressor with brazing complete all as specified and directed.Make :Emersion copeland or equivalent

Supply and replacement compressor suitable for 11TR capacity package type A/C unit including sealing of the compressor with brazing complete all as specified and directed.Make :Emersion copeland or equivalent

M & L for Supply, Fabrication, Installation testing and balancing of sheet metal Ducts as per site requirment to suit each machine mouth connection with 22 Gauge galvanised sheet steel Ducting including providing angle iron supports flanges hangers nuts & bolts Gaskets etc after taking out old damaged sheets from site and making good of all damages / disturbed portion complete all as specified and directed. Noted The ducts shall be fabricated in site for perfect mouth connection to each machine Make : Sail/ Tata/Jindal

S & replace mother board for 65x3 TR screw chiller plant complete as specified . Make : Carrier

S & replace SEMPS board for 65x3 TR screw chiller plant complete as specified . Make : Carrier

S & replace Contactor for 65x3 TR screw chiller plant complete as specified Make : Seimens 3TF47

S&F sensor unit for 65x3 TR screw chiller plant complete as specified .

S&F mother board for 33x3 TR semi hermetic sealed reciprocating unit complete as specified

S&F SEMPS board for 33x3 TR semi hermetic sealed reciprocating unit complete as specified

S&F sensor unit for 33x3 TR semi hermetic sealed reciprocating unit complete as specified .

Repair and servicing to screw type compressor strip opening the head of compressor units complete spare parts of capacity of 65 TR . Inspecting the parts for serviceability and replacement only unserviceable worn out parts in the compressor, complete assembling cleaning the system with Nitrongen gas for leak detection after flushing out the system vacuumization and charging only refrigerant gas, cost of replacement of compressor oil as make: recommended by OEM shall be inclusive and testing the unit on no load and full load condition and checking the parameters etc .All other relevant items as required during servicing shall be inclusive in the cost of Sch ‘A’ item No 2 .

Spare parts to be supply/replaced in Screw type Compressor of make : CARRIER MODEL NO;30 HXY 065 under Srl item No 02 here-in-before for replacement of unserviceable spare parts (cost of fixing shall be paid against srl item No (2) here-in-before) all as specified.& as directed by engr-in-charge. Supply Spares parts for 65TR Model No 30HXY065

(a) External Oil filter

(b) Drive Cores

(c') LP Transducer

(d) HP transducer

(e) Temprature sensor

(f) Sensor cable

(g) Solinoid coil

(h) HP Switch

(j) Pulse valve coil (10W)

(k) Pulse valve coil (20W)

Repair and servicing to semi hermetic sealed reciprocating type compressor of make : CARRIER MODEL NO;30HRC-105(C) 3x33 TR inclusive taking down and dismantling the complete compressor unit and incl replacement of defective spare viz cylinder , piston heads, connecting rod, crank shafts, oil pump, bearings , valves, packing kit , o’ rings , reeds, etc. Re assembling the same incl cleaning and flushing out the system , the N2 gas for leakage proof and vaccuming and charging with R-22 gas and incl replaced of compressor oil as OEM’s nomenclature and testing complete all as directed by Engrs in charge

(a) Supply only valve plates with reeds

(b) supply only connecting rod

© supply only piston with rings

(d) supply only bush Bearing set

('e) supply only oil pump with accessories

(f) supply only Crank shaft

(g) supply only Packing complete

(h) supply only Suction filter

(j) supply only Oil filter

M & L for brazing of copper tubes to seal any leakage joints or damaged tubes including copper tube of suitable size and flare nuts all complete as specified and directed. Supply & Replace Copper Tube Pipe 1/4 inches suitable for gauge and cutout connection purpose

M&L for taking out unserviceable cooling tower fan motor of capacity 7.5 HP, 720 RPM, 3 phase, 415V, 50 Hz, Vertically flange mounted from existing FRP cooling towers to repair shop, re-winding with copper wire of suitable guage, replacing necessary wornout spares, nuts, bolts etc and fixing it back on the cooling tower all as specified and directed

Disconnecting and removing existing unserviceable battery and S&F maintenance free battery 12 V,180 AH with minimum 2 years warrenty all as specified and as directed by Engineer-in-Charge (Make: Exide/Amron/Amco/Tata Green)

Disconnecting and removing existing unserviceable battery and S&F maintenance free battery 12 V,100 AH with minimum 2 years warrenty all as specified ans as directed by Engineer-in-Charge (Make: Exide/Amron/Amco/Tata Green)

Preventive maintenance of DG sets(400KVA X01 ,320KVAX1, 250 KVAX2, 140KVAX 1 ) installed at different location at INHS Kalyani .The following daily maint to be carried out as under :- (a) Check levels in oil through ,fuel tank cooler and replenish if necessary. (b) Re-grease all grease points. (c) Tighten the nuts bolts of pipeline of fuel oil ,lubricating oil,water and check leakages. (d) Check the water level in radiator and top up the coolant as required. (e) Clean oli filters. (f) Check viscosity of lub oil. (g) Check crank case for leakage. (h) Clean air filters. (j) Check the radiator fan belt. (k) Timely replace the engine oil/oil filter/diesel filter/air filter. (l) Check distilled water for battery and top up. (m) Check battery cover condition from cover and battery voltage. (n) Check the metering equipment. (o) Check the insulation resistance of alternator. (p) Maintain log sheet and check list on daily basis. Note : Minor consumable like Petrol, CRC, Brassoetc for cleaning shall be included in the quoted rate.

Supply and replace automatic battery charger of 12V/24 Volt,0-10 Amps /0-5 Amps charging rate with auto cut off system complete all as specified MAKE:- Elak Model;:- AC-03/Amara Raja or equivalent

Supply and fixing in repairs 3 pole power contactor of ML-3 with coil operating voltage 230 V/415V AC 50 HZ Make L&T or equivalent in schneider/C&S/GE

Supply and fixing in repairs 3 pole power contactor of ML-2 with coil operating voltage 230 V/415V AC 50 HZ Make L&T or equivalent in schneider/C&S/GE

Supply and fixing in repairs three phase over load relay 0-70 Amps range Make L&T or equivalent in schneider/C&S/GE

Supply and fixing in repairs three phase over load relay 0-20 Amps range Make L&T or equivalent in schneider/C&S/GE

Dismantling Existing earthing and providing new maintenance free chemical earthing complete with 40mm X 3000 mm advance chemical earthing pipe with (Strip in pipe Technology) with 50 kg of back fill compound buried directly in ground (Rocky soil) with earth pit not less than 2.5 Mtr deep below the normal ground level with top edge of plate not less than 1.5 Mtr below normal GL connected to existing copper strip as earth strip by means of SS bolts,nuts,check nuts and washers all as per IS 3043-1987 all as specified or indicated including testig on completion and as directed.The earth resistance shall be measured using fall of potential method as per Para 37 of IS:3043 & combined resistance should be less than 1 Ohms. NOTE:- The unit rate shall be deemed to include for Excavation & Earth work in any type of soil,PCC (1:3:6) type chamber,RCC 1:2:4 type B-1 cover 50mm thick reinforced with 8mm dia CTD Bars@75mm c/c both ways,MS handle 12mm dia and funnel.

Painting of metal surfaces after prepapring the old surface by scrubiing fully and removing any scales formed on the surface, applying one coat of Red oxide zinc chrome primer, and then applying one coat of synthetic enamel paint of approved colour ( black / blue ) as per existing sample on surfaces as directed by Engr-in-charge

M & L for white washing of walls, undecorated, for 1st coat after removing dust and other foreign particles completely, all completely as specified and described.

M & L for Colour washing of walls, undecorated, for 1st coat after removing dust and other foreign particles completely, all completely as specified and described.

Supply and replace NRV 100mm NB all complete as specified and described.

Supply and replace NRV 80mm NB all complete as specifeid and described.

Supply and replace Y strainer 100mm NB all complete as specifeid andescribed.

Supply and repalce 40 mm NB Gun-metal, globe or gate valves, with iron wheel head, screwed both ends for iron pipe and fixed all compelte as specified and described.

Supply and replace 80mm NB GI flanged pipe along with all fittings all complete as specifeid and directed.

ANAND ENTERPRISES AND ENGINEERS

GS ENGINEERS

M/s.DSRK CONSTRUCTIONS

SRIESWARI ENTERPRISES

KRISHNA ENGINEARING