8496 MANNING AND OPERATION COMPREHENSIVE MAINTENANCE AND REPAIRS REPLACEMENT OF CENTRAL AIR CONDITIONING PLANT AND COLD STORAGE AT BV YARD AND DOOM HALL UNDER GE NW KUNJALI COLABA MUMBAI

Amount

Manning and operation of walk in chiller/ freezer (Cold Storage) running round the clock in three shift including Sunday and Holiday (i.e 0600 To 1400 Hrs , 1400 To 2200 Hrs & 2200 To 0600 Hrs in Three Shift) in B.V Yard at Colaba including taking care from any pilferage, theft or damage, cleaning etc complete for the following all as directed:- 1 No Ref Mech PerShift (3 shift x 11 month = Total 33 ) (a) Walk in chiller with air cooled split type chiller refrigeration unit each capacity 10,000 BTU per hr (Working 02 Nos and 01 No stand by total Three Nos) or scroll hermatic compressor based non CFC R22 refrigerent inside room temperature 2º C To 8ºC suitable for product load 10MT. (b) Walk in chiller with air cooled split type chiller refrigeration unit each capacity 15,000 BTU per hr.(Working 02Nos. and 01 No Stand by total Three Nos.) or scroll hermaticaiiy compressor based non CFC R22 refrigerent inside room temperature -4ºC to +4ºC suitable for product load 10MT. (c) Walk in chiller with air cooled split type chiller refrigeration unit each capacity 30,000 BTU per hr.(Working 02Nos. and 01 No Stand by Total Three Nos.) or scroll hermatically compressor based non CFC R404a refrigerent inside room temperature -18ºC to -23ºC suitable for product load 10MT.

Manning and operation of package type Central AC plant of capacity of 6x8.75 Tr.total 52 tr ( 3 working and 3 standby) Make:- Blue Star at INS Vajrabahu, Naval Dockyard running daily 24hrs. 3shifts around the clock for smooth functioning of entire system and to maintain specific temperature 25+ 2.5 RH 50+ 5% AC plant consists of the following items fitting/ fixtures/ device components for operation running in three shift including Sunday and Holiday (i.e 0600 hrs to 1400 hrs ,1400 hrs to 2200 hrs and 2200hrs to 0600 hrs complete.1 No Ref Mech PerShift (3 shift x 11 month = Total 33 )

Manning and operation of water cooled Central AC plant 2x14TR Make: ACCEL SMC at Doom Band practice Hall INS Kunjali two Compressors run at a time for maintained the specific temperature 25+ 2.5 RH 50+ 5% AC plant consists of the following items fitting/ fixtures/ device components for operation running in two shift including Sunday and Holiday (i.e 0900 hrs to 1700 hrs in including taking care from any pilferage, theft or damage, cleaning etc complete for the following all as directed.1 No Ref Mech PerShift (1 shift x 11 month = Total 11 )

Manning & operation of following Package type Central AC Plants 3x 5.0 TR capacity Make: Voltas installed at Dockyard Officers Mess run in two shift per day (shift 08 hrs) each operated by one Refg Mech except including periodical (ie daily check, monthly, quarterly and half yearly) central AC plant run at a time two units of eah plant and other two and one are stand by for smooth functioning of entire system of Centres and to maintain the specific temperature 20+2ºC, RH 50+- 5% run for 08 hrs daily except Sunday and Holiday (i.e 0900 hrs to 1700 hrs in one Shift) one AC plant operator per shift and including taking care cleaning etc any pilferage, theft or damage etc complete all as directed:- ( Note : As per user requirement ) ( 1 shift x 11 month = Total 11 )

Manning & operation of following 02 Nos (two in numbers) Ceiling Mounted Ductable type Central AC Plants 1x 5.5 TR capacity Make: Blue Star and 1x 8.5 TR Make: Blue Star installed at BOATPOOL FERRY LOUNGE(ND) run in one shift per day (shift 08 hrs) each operated by one Refg Mech except including periodical (ie daily check, monthly, quarterly and half yearly) central AC plant run at a time two units of eah plant and other two and one are stand by for smooth functioning of entire system of Centres and to maintain the specific temperature 20+2ºC, RH 50+- 5% run for 8hrs daily except Sunday and Holiday in one shift.(i.e 0900 to 1700 Hrs) one AC plant operator per shift and including taking care cleaning etc any pilferage, theft or damage etc complete all as directed:- ( 1 shift x 11 month = Total 11 )

Comprehensive maintenance of walk in chiller / freezer (Cold Storage) installed in B.V Yard main bldg. round the clock including painting of platform of unit with stair case replacement of lights in cool and cold room, repairs of doors, lock etc complete for the following specification. (a) Air cooled split type refregeration unit of capacity 30000 BTU/Hrs. sealed compressure based on CFC-R 404 a gas maintaining temperature -18ºC To -23ºC, RH 50% of cool room No. 1 of size 6.55 x 5.75 x 3.9M. (b) Refrigerantion unit -03 Nos (c) Compressor- 03 Nos (d) Air cooled split type refregeration unit of capacity 10000BTU/Hrs and maintaining temp 2ºC to 8ºC for cool room of size 11.5 x 5.95 x 3.9M. (e) Refrigeration unit - 03 Nos (f) Compressor - 03 Nos (g) Air cooled split type refregeration unit of capacity 15000BTU/Hrs.and maintaining temp -4ºC to +4ºC for cool room of size 6.55 x 5.75 x 3.9M. (h) Refrigeration unit -03 Nos (j)Compressor - 03 Nos

Comprehensive maintenance of Central AC Plant of capacity 14TR X 2Nos.comprising of following equipment mentioned below complete all as specified and directed by Engineer-in-Charge at Doom Hall . (a) Compressor model ACCEL SMC 4-65 -2 Nos (b) Compressor motor 15HP-02Nos. (c) Condenser water pump set mono block 5HP-02Nos. (d) Air handling unit with blower motor -01No. (e) FRP Cooling tower with CT Fan- 01No. (f) Electrical control panel cubical type floor mounted complete with main switch, MCCBs, MCB's, voltmeter, Ammeter, auto matic star delta starter for compressors, AHU, pumps, CT fans, condenser etc. complete-01 Set. (g) Control devices such as expansion valve, thermostat solenoid valves, HP/ LP/ OP cut outs with panel board installed gauges-01Set (h) Digit type thermometer-01Set (j) Air supply duct with grill diffusers, dampers and pre heater & re heater back of each complete-01Set (k) Condenser MS piping 50/40mm dia with valves, pressure gauge, temperature gauge, complete-01Set.

Repairs/Routine maintenance of invertor type VRF machines installed at INCORD Dept. P2 Bldg(ND) of Bluestar make of following capacity round the clock including maintaining the plants twenty four hours for desired temperature of 21+/-3 degree celcius without interuption including repairs/ replacement of damaged/ unserviceable minor parts, controlling valves, copper tubings, nitrile rubber insulation, and all electrical/ electronics components, control wirings, sensors,Thermistors, thermocol inner packs,indoor/ outdoor fan motor windings, vibration pads, painting of rusted out door stands and connected accessories, drainage lines, pre filters control/ communication wirings,earthings, leak test and all other accessories not mentioned in this schedule. the followings capacity are mentioned below:-

Out door unit of capacity 18 hp -02 Nos

Split high wall type indoor unit of capacity 1.0 tr -5 Nos, 1.5 tr-12 Nos and 2.0 tr-2 Nos

Repairs/Routine maintenance of Ceiling Mounted Ductable type Central Air conditioning plant of capacity 1x 5.5 TR capacity Make: Blue Star and 1x 8.5 TR installed at Boatpool Ferry Lounge(ND) of Bluestar make of following capacity round the clock including maintaining the plants twenty four hours for desired temperature of 21+/-3 degree celcius without interuption including repairs/ replacement of damaged/ unserviceable minor parts, controlling valves, copper tubings, nitrile rubber insulation, and all electrical/ electronics components, control wirings, sensors,Thermistors, thermocol inner packs, fan motor windings, vibration pads, painting of rusted out door stands and connected accessories, drainage lines, pre filters control/ communication wirings,earthings, leak test and all other accessories not mentioned in this schedule complete testing of the plant for smooth functioning all as specified & as directed by Engineer-in-Charge.

Pumping down and transfer existing refrigerant gas of compressor complete for overhauling of compressor, reciprocating type type open type Model No SMC- 4-65 Make : ACCEL 14 Ton capacity and dismantling complete, assembly & replacing of minor unserviceable parts including matching of crank shaft, boring polishing etc. replacing of gaskets packing reassembly and recharging of pumped down refrigerant & topping up if required maintain the required standing pressure charging of compressor oil complete testing for smooth functioning etc complete all as specified and directed by Engineer-in-Charge at Doom Hall. Note: Major spare parts, compressor oil and refrigerant for topping up will be measured and paid seperately under relevant items here in after as 'supply only'. Labour charges are deemed to be included in the quoted unit rate for this item.

Supply only the following items for compressor reciprocating model SMC- 4-65 Make : ACCEL at Doom Hall :-

All as per item No. 11.00 : Piston

All as per item No. 11.00 : Piston rings

All as per item No. 11.00 : Oil rings

All as per item No. 11.00 : Connecting rod bearing half section

All as per item No. 11.00 : Main end bearing with washer

All as per item No. 11.00 : Liner assembly

All as per item No. 11.00 : Gudgeon pin bush

All as per item No. 11.00 : Rocker arm frame

All as per item No. 11.00 : Rocker arm

All as per item No. 11.00 : Loading unloading ring

All as per item No. 11.00 : Suction valve retaining plate

All as per item No. 11.00 : Suction reeds

All as per item No. 11.00 : Discharge reeds

All as per item No. 11.00 : Oil filter inner

All as per item No. 11.00 : Suction strainer

All as per item No. 11.00 : Oil regulating valve

All as per item No. 11.00 : Discharge valve retaining plate

All as per item No. 11.00 : Crank Shaft

All as per item No. 11.00 : Oil pump Assembly

All as per item No. 11.00 : Connecting rod

Rewinding of unserviceable electric motor 3 phase 50 Hz 415volt of following capacity pump set complete comprising as under :- (i) Disconnecting & removing the electric motor from installed position including, loading, unloading and transporting to approved workshop. (ii) Taking out the existing burnt winding from the motor including rewinding complete with super enameled copper winding wire of existing gauge including all insulating material such as insulation paper, sleeves, tape, varnish etc. complete for class 'F' insulation. (iii) Transporting the motor back to the location, reinstalling in original position including alignment, electrical & water connection, commissioning and testing for 8hours continously to check the RPM etc. to the satisfactory performance etc. complete. Note :- Any damage caused during handling/repairing shall be made good without any extra cost to department.

5.0 HP condenser water motor

15HP compressor motor

10 HP AHU blower motor

Over hauling of Monoblock pump set after removing from the base plate, disconnecting from pipe line, dismantling the pump set, replacing unserviceable gland packing, gun metal bush bearing water seal applying grease etc. complete and reassembling the pump set connecting with pipe line reconnection of electric supply, including buts bolts, gaskets etc. complete testing of pumps for smooth functioning 5.0 HP condenser water pump motor complete all as specified and directed by Engineer-in-Charge

Over hauling of compressor motors, AHU (blower motor) after disconnecting electric supply connection, base nut bolts and removing from base plate & transporting to workshop & back complete opening, pully, end cover plate replacing defective bearing greasing complete and refixing old existing location and reconnection of electric supply including necessary level and alignment, buts bolts, gaskets etc complete with following capacity of motors:-

15HP compressor motor

10 HP AHU blower motor

Taking down old unserviceable shaft seal assembly complete and supply and fix new shaft seal assembly suitable for central AC Plant of model SMC4-65/SMC 6-65/ SMC 4100 ACCEL SABRO at Doom Hall all as directed by Engineer-in-Charge

Material and labour for expansion valve of AC plant capacity 14TR including taking down unserviceable valve complete all as specified and directed by Engineer-in-Charge at Doom hall. Make : Sporlon or equivalent

Pumping down the plant to preserve the existing in refrigerant gas & leak testing of plant by charging of nitrogen gas in to entire plant & monitoring for 24hrs to find the leakages, rectification of leak by brazing & replacement of necessary gasket packing wherever required including copper tubes of suitable size vacumising of the plant by vacum pump & keeping 24hrs for pressure testing including rectification of leakages if any finally recharging of existing refrigerant gas to the plant and topping up of refrigerant if required to maintain the standard pressure complete testing of the plant for smooth functioning complete all as specified & as directed by Engineer-in-Charge.

Dismantling of AHU carefully with top panel and side panel unserviceable pedastal bearings, shafts, motor and blower assembling, materialising and machineing the shaft, replacement of existing size of bearings reassembling the new pedastal bearing shaft blower assembly and electric motor and top / side panel in original position with new nut for smooth running all as specified and directed by Engineer-in-Charge at Doom Hall.

Material and labour for disconnecting condenser for descaling, plugging them & providing of 15mm tee out let for local circulation of mild acid solution in the condenser (separate container and small pump set to circulate diluted acid solution to be used) PH value of solution to be circulated & to be kept 4 and checking frequently i.e. every one hour during the operation Scalgun WS solution to be used for descaling purpose after 2 to 3 hours of cleaning if ph value remains less than flush with fresh water mixed with sodium carbonate tubes and cleaning with nylonbrush after closing the end covers, circulating diluted acid solution as specified above, to maintaine PH value as above & flushing the same with fresh water including recharging of stored refrigerant up to required pressure of capacity 2x14 TR plant complete all as specified & directed by Engineer-in-Charge.

Removing the unserviceable liquid line valve of size 5/8mm dia from the liquid line after pumping down the compressor & supply and fixing new liquid line valve 15mm dia including connected works as required for smooth functioning of AC plants complete all as specified and directed by Engineer-in-Charge

Supply and charge refrigerant R-22 Gas ISI Marked as per requirement.

Replacement of Compressor Oil with new Compressor oil of Frizol 68 all as specified and directed by Engineer-in-Charge.

Removing old unserviceable discharge valve 5/8mm dia and supply and fix new discharge valve of size 5/8mm dia suitable for R-22 gas discharge line all as specified & directed. Make : Castle

Supply and fix in replacement of unserviceable / wornout 'V' belt of compressor of size B-90, AHU belt size of A-82 etc of make fenner Dunlop, Nurlon as approved

Taking down old unserviceable AHU pre filter and supply and fix new pre filters efficiency 90% down to particular size of 10 micron double knitted twisted polymer fabric (washable) rated with press drop of 6 mm WC, including aluminium anodized frame work of 16 SWG to be mounted in AHU filter assembly size (625 x 475 x 50) mm. Make:DYNA/ASPAWYMAN/MHP as approved

Replacement of unserviceable 2KW Heater strip for AC plant.

Taking down old existing MS pipes, supply, lay and welding MS pipes heavy grade with all fittings laid in floors or fixed to walls and ceilings etc. of sizes 100 mm dia

Taking down old existing MS pipes, supply, lay and welding MS pipes heavy grade with all fittings laid in floors or fixed to walls and ceilings etc. of sizes 80 mm dia

Taking down old existing GI pipes, supply, lay and welding GI pipes medium grade with all fittings laid in floors or fixed to walls and ceilings etc. sizes 100 mm dia:

Taking down old existing GI pipes, supply, lay and welding GI pipes medium grade with all fittings laid in floors or fixed to walls and ceilings etc. sizes of 80 mm dia:

Taking down old existing GI pipes, supply, lay and welding GI pipes medium grade with all fittings laid in floors or fixed to walls and ceilings etc. sizes of 50 mm dia:

Supply and fix in replacement power contactors MNX type, three phase, 415V all as specified and directed by Engineer-in-Charge :- Make: L&T Cat No. MNX 40 or equivalent of Siemens/GE/Legrand

Supply and fix in replacement power contactors MNX type, three phase, 415V all as specified and directed by Engineer-in-Charge :- Make: L&T Cat No. MNX 32 or equivalent of Siemens/GE/Legrand

Supply and fix in replacement power contactors, three phase, 415V all as specified and directed by Engineer-in-Charge :-Make: L&T Cat No. MNX 25or equivalent of Siemens/GE/Legrand

Supply and fix in replacement Auxliary contactors 1NO+1NC three phase, 415V all as specified and directed by Engineer-in-Charge :- Make: L&T / Siemens/GE/Legrand

Taking down old unserviceable AHU Blower and S & F new AHU Blower all as specified & directed .

Taking down old unserviceable AHU Blower Drum and S & F new AHU Blower Drum all as specified & directed .

Taking down old unserviceable AHU Blower Shaft and S & F new AHU Blower Shaft all as specified & directed .

Removing the unserviceable solenoid valve 5/8" flare from the liquid line and supply and fix new solenoid valve 5/8" suitable for AC plant of various capacities complete with all as specified and as directed by Engineer-in-Charge

Removing the unserviceable pressure gauges HP/LP/OP from existing position and supply and fixing new pressure gauge of capacity 0 to 30Kg. / square centimeter complete with necessary accessories all as specified & directed by Engineer-in-Charge

Removing the unserviceable water pressure gauges from water line & supplying and fixing new water meter up to pressure 7Kg. / square centimeter complete with necessary accessories all as specified & directed by Engineer-in-Charge

Material and labour for scraping cleaning & preparation of external surface & painting complete installation of 14 x 2 TR (28TR capacity) including compressor, motor, piping, cooling tower, condensor, AHU & panel board etc with two coats of synthetic enamel paint over a coat of primer as per direction on colour code as given including writing SM & MES numbers complete all as per specified & as directed by Engineer-in-Charge at Doom Hall AC Plant

Material & Labour for HP/LP cut out of AC Plant MP-15 Including taking down old one. Make:- Indofoss

Material and labour for oil pressure cut out controls for compressor including taking down old one. Make: MP 55 Indofoss or equivalent.

Removing of old unserviceable heating coil as per suitable dia and liquid length with super lone insulation over the pipe for drainage of cold room all as directed by Engineer-in-Charge.

Material and labour for digital thermometer for temperature suitable for cold room after removing old unserviceable thermometer.

Material and labour for LP/HP Cut out of cold room after removing to unserviceable LP/HP cut out Make : Donfoss

Replacement of running capacitor 36 MFD/45 MFD after removing old unserviceable running capacitor make : Usha/ Siemens/ Epcos

Replacement of old unserviceable thermostat with new thermostat suitable(-)18 deg C to (-) 23deg C cold storage plant.

Removing old unserviceable pilot solenoid valve assembly and providing new pilot solenoid valve assembly for cold room.

Material and labour for replacement of old unserviceable temprature indicator.

Replacement of old unserviceable liquid line filter with new liquid line filter. Make: Danfoss

Material and labour for replacement of old unserviceable Filter drier.

Material and labour for expansion valve suitable for -18degC to -23degC after removing unserviceable expansion valve in cold room Make :- Danfoss

Supply and fix single phase preventor Make: Minilec

Replacement of starting capacitor 120MFD after removing old unserviceable capacitor.

Removing old unserviceable timer/ supply and fix new timer of same make and capacity all as directed by Engineer-in- Charge.

Removing old unserviceable over load relay assembly and supply fixing new overload relay assembly of 9-15 Amps same make and capacity all as directed.Make: L & T or its equivalent

Supply and fix in repairs CI Butter fly valve slim seal design with nitrile rubber lined seal with clutch lever (P10 or PN 16) as per IS 13095 of size 80mm bore .Make: AUDCO/SANT/SIR as approved.

Ditto - as per item No above but 65 mm bore.

Ditto - as per item No above but 50 mm bore.

Supply and fix in repairs Gate Valve of 40 mm Bore .Make: HM//L&T/kirloskar as approved.

Supply and fix in repairs Pot Strainer of 80 mm Bore suitable for Cooling tower pipi line.Make: Kirloskar/Hammer/L&T as approved.

Supply and fix flexible cord type Drain line Silicon Heater with insulation 60watt for cold room

Pumping down plant to pressure the existing refrigerant gas and leak testing of plant by charging of Nitrogen gas in to entire plant and monitoring for 24hrs to find the leakages rectification of leak by brazing & replacement of gasket packing including vacumizing of the plant by vaccum pump and keep up 24hrs. for testing including rectification of leakage if any finally recharging of gas to the plant to maintain the standard pressure complete test of following capacity:-

Cold room refrigerant unit 5TR Capacity

Cold room refrigerant unit 3TR Capacity

Cool room refrigerant unit 2TR Capacity

Removing old unserviceable compressor from the unit after disconnecting electrical wiring and piping connection with nuts and bolts complete supply, install and testing new sealed compressor of following capacity and connecting pipe line including piping, brazing and electirc connection for cold storage at B.V yard,colaba of following capacity:-

Refrigerant unit of Compressor 5TR Capacity

Refrigerant unit of Compressor 3TR Capacity

Refrigerant unit of Compressor 2TR Capacity

Removing the worn out control wiring complete, rewiring with suitable copper conductor cable replacing the lugs starter to compressor motor, fan motor timer HP/LP cut , thermostat complete interlock wiring, checking the complete function of timer, heaters, relays, HP/LP cut outs, thermostat cut out and inter lock wiring system, testing on load and all wiring shall be mounted on cable tray of size 200mmx50mm. all as specified and directed for cold storage of following capacity:-

Refrigerant unit of 5TR Capacity

Refrigerant unit of 3TR Capacity

Refrigerant unit of 2TR Capacity

Gas charging with R-404a gas ISI Marked with connecting accessories

Removing old unserviceable condensor coil fan motor with blade assembly and providing new condensor coil fan motor with blade complete suitable for cold room outdoor unit of capacity 2tr/3tr/5tr.

Removing old unserviceable cooling coil fan motor with blade assembly and providing new cooling coil fan motor with blade complete suitable for cold room indoor unit of capacity 2tr/3tr/5tr.

Taking out old unserviceable condensor and supply & fix new condensor made out of copper pipe and aluminium fins suitable for cold/ cool room including gas charging, leakage checking and testing all as specified

Supply and errect factory fabricated rectangular square duct made out of 24 gauge GI sheet in L shaped hollow profile including all accessories such as corner, carriage bolt hangers, gasket and seal the longitudinal joints with and including approved sealant complete all as specified and directed by Engineer-in-Charge.

Taking down old unserviceable insulation from any surface and supply and fix nitrile rubber insulation of one layer of 19mm thickness sticking on surface by using approved adhesive and sealing the joints by weather proof tape all as directed by Engineer-in-Charge.

Material and labour for replacement of unserviceable Cooling Tower accessories i.e. Nozzeles, water inlet/outlet pipe and filter, Fan blade, fan blade housing assembly, GI bolts, nuts, MS frame and ladder etc complete and refitting old PVC fills (serviceable qty shall be reused to the extent available) after cleaning with diluted HCL solution suitable for the existing cooling tower, servicing of fan and motor assembly including removal of dust, oil, scaling of motor body and replacing the unseviceable bearing, painting with anticorrosive paint & reassembling complete For 35 TR cooling tower Location Doom Hall all as specified and directed.

Supply and fix 'C' Channel, Angle iron steel bracing, supports, clamps and back plate fabricated from structural steel section including nuts, bolts, washers, welding, bending, drilling holes for bolts in any shape any size inclusive of one primer coat and two coats of synthetic enamel paint complete all as specified and directed.

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Darpan Construction

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M/S SOMANATH ENTERPRISES

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