MANNUAL RESCUE AND OPERATION RESCUE OF AC PLANT AT TS MAHUL AND HQ 31 WEU THANE AND REPAIRS AND MAINT OF AHU, CHILLER PUMPS, COOLING TOWERS AND CONTROL PANELS OF AC PLANT, DEHUMIDIFIER AT NAD, WED, TS MAHUL, THANE UNDER GE MKD

Amount

Mannual Rescue and Operation Rescue of Central AC Plants [Installation consisting of AC Plant with chilled water system 160 TR capacity having 03 Nos compressors each of 80 TR capacity (02 Nos working at a time and 01 No. standby) with all connected equipments and machineries as per Serial No 4 of Annexure 'A' to Particular Specifications] round the clock through out the month in three shifts (including Sundays and Holidays) by employing one operator cum AC machenic per shift of eight hours including carrying out routine maintenance and upkeeping the Installation / AC Plants in operation condition complete in all respects as specified and directed :- Location : 160TR AC Plant TS Mahul: (i) 1st shift - 0600 hrs to 1400 hrs (ii) 2nd shift - 1400 hrs to 2200 hrs (iii) 3rd shift - 2200 hrs to 0600 hrs

Mannual Rescue and Operation Rescue of Central AC Plants [Installation consisting of AC Plant with chilled water system 30 TR capacity having 03 Nos compressors each of 18 TR capacity (02 Nos. working at a time and 01 No. standby) with all connected equipments and machineries as per Serial No 3 of Annexure 'A' to Particular Specifications] round the clock through out the month in three shifts (including Sundays and Holidays) by employing one operator cum AC machenic per shift of eight hours including carrying out routine maintenance and upkeeping the Installation / AC Plants in operation condition complete in all respects as specified and directed :- Location : Rukmani TS Mahul (i) 1st shift - 0600 hrs to 1400 hrs (ii) 2nd shift - 1400 hrs to 2200 hrs (iii) 3rd shift - 2200 hrs to 0600 hrs

Mannual Rescue and Operation Rescue of Central AC Plants [Installation consisting of AC Plant with chilled water system 60 TR capacity having 03 Nos compressors each of 30 TR capacity (02 Nos working at a time and 01 No. standby) with all connected equipments and machineries as per Serial No 8 of Annexure 'A' to Particular Specifications] round the clock through out the month in two shifts (including Sundays and Holidays) by employing one operator cum AC machenic per shift of eight hours including carrying out routine maintenance and upkeeping the Installation / AC Plants in operation condition complete in all respects as specified and directed :- Location :31 WEU THANE (i) 1st shift - 0600 hrs to 1400 hrs (ii) 2rd shift - 2200 hrs to 0600 hrs (iii) 3rd shift - 2200 hrs to 0600 hrs Notes for ITEM NOS 01 TO 03: Quoted rates shall also be deemed to include the following elements:- (i) To provide uniform, tools & plants, safety means like glove etc to the employees and also alternative employee (reliever) for Manning and Operation of AC Plants/Installation so that the other employees can avail the facility of weekly leave etc. (ii) To keep the AC Plant Room & allied area in clean and tidy condition during the operation period. (iii) To carryout the routine maintenance, minor repairs, oiling, greasing and to rectify the minor defects to keep the plants / Installation in serviceable condition all as directed by the GE and Engineer-in-Charge. However, the major repairs, replacements, overhauling, gas charging, topping-up oil etc are not included in the scope of the above items. (iv) To keep necessary documentation duly signed by all the concerned. (v) To hand over the entire plant in serviceable condition at the time of completion.

M & L for dismantling condenser connections for descaling, plugging them and providing 15 mm bore tee outlet for local circulation of mild acid solution in the condenser (separate container and small pump set to circulate mild acid solution shall be used). The PH value of solution shall be 4 and it shall be checked frequently i.e. every 1 hour during the operation. The Scalgun WS solution or equivalent solution as approved by the GE shall be used for discaling purpose. After 2 to 3 hours of cleaning, if the PH value remains less than 7, flush with fresh water added with sodium carbonate. After above process, the end covers shall be opened and condenser tubes shall be cleaned with Nylon brush, subsequently after closing the end covers, circulate mild acid solution as specified above and PH value shall be maintained as above, flushing the same with fresh water including recharging of stored refrigerant upto required pressure complete all as specified and directed for AC Plant of condensor 3 x 75 TR capacity (NAD Missarmine). Notes: The quoted rates shall also be deemed to include the following elements :- (a) The solution shall be warmed upto 35 Degree Celsius. (b) During the entire process of cleaning, the PH value of water shall be 7. (c) Provision of solution for descaling, rubber gaskets, washers, nuts, bolts etc as directed.

All as per item No. 4 hereinbefore but for Condensar of AC Plant of 3x30 TR Capacity of EKM WKSP at NAD

All as per item No. 4 hereinbefore but for Condensar of AC Plant of 3x15 TR Capacity AWS at NAD

All as per item No. 4 herein before but for AC Plant of 3 x 30 TR Capacity P-35, 2 x 30 TR Capacity P-78 capacity EKM WKSP at NAD

Dismantling cooling coil section of AHU for descaling and provision of 2 Nos 15mm tee outlet for local circulation of mild acid solution in the coil. Separate container and small pump set shall be used to circulate mild acid solution with 4 PH value. The Scalgun WS/Cleansol or equivalent solution as approved by the GE shall be used for descaling. If the PH value remains less than 7, flush with fresh water added with sodium carbonate till PH value attains to 7. Refixing the coil section in position, carryout minor repairs including fixing arrangement etc. AHU coil fins shall be cleaned by Sealgum solution by spraying the solution with washing pump upto the required level for 150 TR

All as per item No. 8 herein before but for the chiller connection of AC Plant of 3 x 30 TR Capacity of P-35, 2 x 30 TR Capacity of P-78, 3 x 30 TR capacityof EKM WKSP at NAD and HQ 31 WEU Thane

All as per item No. 8 herein before but for the chiller connection of AC Plant of 3 x 15 TR Capacity AWS at NAD

Supply only refrigerant (R-22) gas as per requirement, complete all as specified and directed. Make : MAFRON/FLORON/ REFRON/ FREON

Supply only refrigerant (R-407 C )gas as per requirement, complete all as specified and directed. Make : MAFRON/FLORON/ REFRON/ FREON.

Supply only compressor oil as per requirement, complete all specified and directed. Make : Servo, HP, BP, Sheetal N-68, Freezol 36.

Disconnecting chiller connection for descaling, providing 2 Nos of 15mm dia tee and plugging for circulating mild acid solution in the chiller (Separate container and small pump set shall be used to circulate mild acid solution with PH value 4). The Scalgun WS/Cleansol or equivalent solution as approved by the GE shall be used for descaling purpose. After 2 to 3 hours of cleaning if the PH value remains less than 7, flush with fresh water added with sodium carbonate till PH value attains to 7 for the chiller connection of AC plants of 3 x 75 TR Capacity (Missar Mine) complete all as specified and directed. Notes: The quoted rates shall also be deemed to include the following elements :- (a) The solution shall be warmed upto 35 Degree Celsius (b) During the entire process of cleaning, the PH value of water shall be 7. (c) Provision of solution for descaling, rubber gaskets, washers, nuts, bolts etc as directed.

All as per item No. 14 hereinbefore but for 60 TR capacity (Location : EKM NAD)

All as per item No.14 hereinbefore but for 60 TR capacity (Location : P-35 NAD)

All as per item No.14 hereinbefore but for 38 TR capacity (Location :P-78 NAD)

All as per item No.14 hereinbefore but for 30 TR capacity (Location MAGZINE & AWS NAD)

All as per item No.14 hereinbefore but for 60 TR capacity (Location : 31 WEU THANE)

Re-winding of 100 HP capacity compressor/ pump electric motor 3 phase, 50Hz, 415 Volts of pump set complete all as specified and directed. NOTES: The quoted rates shall also be deemed to include the following elements:- (a) Disconnecting & removing the electric motor from installed position including loading, unloading and transporting to approved workshop. (b) Dismantling the existing burnt winding from the motor including winding with new super enamelled copper winding wire of existing gauge, also including provision of all insulating material such as insulation paper, sleeves, tape, varnish etc complete in all respects for class ’F’ insulation. (c) Transporting the motor back to the location, reinstalling in original position including making alignment, electric connection etc complete, commissioning and testing for 8 hours continuously to check the RPM to the satisfaction of Engineer-in-Charge. (Note : Any damage caused during handling and rewinding etc will be made good by the contractor at his own cost).

All as per item No. 20 above but 40 HP capacity motor

All as per item No. 20 above but 20/25 HP capacity motor

All as per item No.20 above but 10 /15 HP capacity motor.

All as per item No. 20 above but 7.5 HP capacity Motor.

All as per item No. 20 above but 5 HP capacity Motor.

Supply and fix in repairs automatic capacity control pilot solenoid valve suitable for the liquid line of AC Plants of various capacity complete all as specified and directed, Make :- Rotex, Avcon, SPORLAN, DANFOSS.

M & L for thermal insulation over 150mm bore chiller water piping with 50mm thick fibre glass wool, crown 150 and of density 24 Kg/Cum, the glass wool shall be covered with and including 24 SWG aluminium sheet cladding, complete all as specified and directed, Make: Lloyd's / TWIGA/ FGP Ltd.

All as per item No. 27 above but over 80mm bore chiller water piping

All as per item No. 27 above but over 50mm bore chiller water piping

Dismantling of Monoblock pump of under mentiuoned capcities from connected suction/delivery pipes and electric connections etc, taking to workshop, overhauling of the same and replacing unserviceable spares/parts/components, cleaning of impeller, greasing reassembling, bringing providing paking necessary nuts & bolts etc and reconnecting, recommissioning and testing for smooth functioning. (Notes: Cost of all the elements (material cost as well as labour cost) for making the pumps completely functional except the following shall be deemed to be included in the quoted ratess:

40 HP Capacity

20/25 HP Capacity

10 /15HP Capacity

5/7.5 HP Capacity

Supply only following spares /components/parts for monoblock pump set all as specified and directed :-

Gun metal bushes for 40 HP capacity

Gun metal bushes for 20/25 HP capacity

Gun metal bushes for 10HP capacity

Gun metal bushes for 7.5 HP capacity

Gland packing set for 40 HP capacity

Gland packing set for 20/25 HP capacity

Gland packing set for 10 HP capacity

Gland packing set for 7.5HP capacity

Bearing for 7.5 HP capacity Make : SKF, TATA, NBC

Bearing for10 HP capacity Make : SKF, TATA, NBC

Water seal packing for 7.5 HP capacity

Water seal packing for 10 HP capacity Note : The quantity of item Nos 31.01 to 31.12 shall be operated only to the extent required replacement for Pumps under item No. 30.01 x 30.04 here-in-before. These shall be of makes as specified and in case, makes are not mentioned in these tender documents, the same shall be as per the existing and shall be suitable for the pumps under item No 30.01 to 30.04 all as directed and approved by the GE.

Taking down AC Plant compressor reciprocating type model SMC-4-100 of ACCEL Make by dismantling complete assembly, after pumping down refrigerant R-22,overhauling the compressor including replacement of unserviceable spares, also including machining of crank shaft bearing, polishing, replacing of gaskets packing, reassembly and recharging of pumped down Refrigerant, also charging of additional refrigerant upto the required pressure & topping up if required to maintain the required standing charged pressure of compressor oil, testing for smooth functioning etc, complete all as specified and directed. Location : EKM workshop (Note: Cost of all the elements (material cost as well as labour cost) for making the compressors completely functional except the following shall be deemed to be included in the quoted rates : (a) Supply only spares included under item Nos 33.01 to 33.18 here-in-after. (b) Supply only additonal refrigerant required for recharging of pumped down refrigerant, if required. (c) Supply only compressor oil for topping up, if required.

Supply only following spares for compressor reciprocating type model SMC- 4-65, Make : ACCEL :

Crank shaft duly remetalised, grinded, polished and made to size to match with the existing, Cat No. F-7713

Piston Cat No. F-6503

Piston Oil rings Cat No.F-6523

Main sealing bearing (Set of two) Cat No. F-7276

Liner assembly Cat No. F-7167

Oil pump assembly Cat No. F-6501

Rocker arm Cat No. F-7166

Loader/unloader spring Lock Cat No. F-7277

Piston sleeves bushing with collar, Cat No. F-7165

Suction valve reeds Cat No. F-8162

Discharge valve reeds Cat No. F-6504

Oil filter Cat No. F-7796

Suction Filter Cat No. F-7167

Oil pressure regulating valve Cat No. F-6507

Connecting rod bearing Cat No. F-7164

Gasket set of make Neopene or equivalent as appoved by the GE

Compressor safety valve Cat No. F-7278

Shaft seal assembly, Cat No. F-7646

Taking down AC Plant compressor reciprocating type model SMC- 8-100 of ACCEL Make by dismantling complete assembly after pumping down refrigerant R-22,overhauling the compressor including replacement of unserviceable spares, also including machining of crank shaft bearing, polishing, replacing of gaskets packing, reassembly and recharging of pumped down Refrigerant, also charging of additional refrigerant upto the required pressure & topping up if required to maintain the required standing charged pressure of compressor oil, testing for smooth functioning etc, complete all as specified and directed. Location : MISSAR MINE NAD (Note: Cost of all the elements (material cost as well as labour cost) for making the compressors completely functional except the following shall be deemed to be included in the quoted rates : (a) Supply only spares (b) Supply only additonal refrigerant required for recharging of pumped down refrigerant, if required. (c) Supply only compressor oil for topping up, if required.

Supply only following spares for compressor reciprocating model SMC- 8-100, Make : ACCEL :

Crank shaft duly remetalised, grinded, polished and made to size to match with the existing, Cat No. F -7803

Piston Cat No. V5124A

Piston Oil rings Cat No.V5485

Main sealing bearing (Set of two) Cat No. F-7276

Liner assembly Cat No. F-7167

Oil pump assembly Cat No. F-6501

Rocker arm Cat No. F-7166

Loader/unloader spring Lock Cat No. F-7277

Piston sleeves bushing with collar, Cat No. F-7165

Suction valve reeds Cat No. F-8162

Discharge valve reeds Cat No. F-6504

Oil filter Cat No. F-7796

Suction Filter Cat No. F-7167

Oil pressure regulating valve Cat No. F-6507

Connecting rod bearing Cat No. F-7164

Gasket set of make Neopene or equivalent as appoved by the GE

Compressor safety valve Cat No. F-7278

Shaft seal assembly, Cat No. F-7646 Note : The quantity of item Nos 35.00 to 35.18 shall be operated only to the extent required replacement for compressors under item No. 35.00 here-in-before. Unless othewise specified in the BOQ, these shall be of make ACCEL & of mentioned Cat No in the BOQ and shall be suitable for the compressors under item No 35.00 all as directed and approved by the GE.

Taking down AC Plant compressor reciprocating type model 5H-40 Make VOLTAS by dismantling complete assembly after pumping down refrigerant R-22,overhauling the compressor including replacement of unserviceable spares, also including machining of crank shaft bearing, polishing, replacing of gaskets packing, reassembly and recharging of pumped down Refrigerant, also charging of additional refrigerant upto the required pressure & topping up if required to maintain the required standing charged pressure of compressor oil, testing for smooth functioning etc, complete all as specified and directed. Location :P-78 NAD (Note: Cost of all the elements (material cost as well as labour cost) for making the compressors completely functional except the following shall be deemed to be included in the quoted rates : (a) Supply only spares (b) Supply only additonal refrigerant required for recharging of pumped down refrigerant, if required. (c) Supply only compressor oil for topping up, if required.

Supply only following spares for compressor reciprocating model 5 H-40 Make VOLTAS

Crank shaft duly remetalised, grinded, polished and made to size to match with the existing, Cat No. F -7803

Piston Cat No. V5124A

Piston Oil rings Cat No.V5485

Main sealing bearing (Set of two) Cat No. F-7276

Liner assembly Cat No. F-7167

Oil pump assembly Cat No. F-6501

Rocker arm Cat No. F-7166

Loader/unloader spring Lock Cat No. F-7277

Piston sleeves bushing with collar, Cat No. F-7165

Suction valve reeds Cat No. F-8162

Discharge valve reeds Cat No. F-6504

Oil filter Cat No. F-7796

Suction Filter Cat No. F-7167

Oil pressure regulating valve Cat No. F-6507

Connecting rod bearing Cat No. F-7164

Gasket set of make Neopene or equivalent as appoved by the GE

Compressor safety valve Cat No. F-7278

S & F in repairs HP/LP/OP sensor swtiches all as specided and driected Make Indofoss / danfoss

S & F in repairs pressure gauges HP/LP/OP of following capacities etc. complete with all accessories, as specified and directed, Make : PENN / INDOFOSS / RANCO / DANFOSS / JOHNSON

0 to 16kg./cm2

Supply and fix in replacement single phase preventer, type SPPR Type SZ 5 (7 Wire), 380V suitable for existing panel board for AC Plant, complete all as specified and directed, (Make L&T / SIEMENS).

S & F in replacement unserviceable worn out 'V' belt of model A-54 of make Fenner or equivalent in Nirlon/Dunlop as approved by the GE for Compressor / AHU etc. complete all as specified and directed.

S & F in replacement unserviceable worn out 'V' belt of model B-65of make Fenner or equivalent in Nirlon/Dunlop as approved by the GE for Compressor/ AHU etc. complete all as specified and directed.

S & F in replacement unserviceable worn out 'V' belt of model B-2760 of make Fenner or equivalent in Nirlon/Dunlop as approved by the GE for Compressor/ AHU etc. complete all as specified and directed.

S & F in replacement unserviceable worn out 'V' belt of model A-26 of make Fenner or equivalent in Nirlon/Dunlop as approved by the GE for Compressor/ AHU etc. complete all as specified and directed.

S & F in replacement unserviceable worn out 'V' belt of model B-73 of make Fenner or equivalent in Nirlon/Dunlop as approved by the GE for Compressor/ AHU etc. complete all as specified and directed.

S & F in replacement unserviceable worn out 'V' belt of model C-134 of make Fenner or equivalent in Nirlon/Dunlop as approved by the GE for Compressor/ AHU etc. complete all as specified and directed.

S & F in replacement unserviceable worn out 'V' belt of model SPZ-1950 of make Fenner or equivalent in Nirlon/Dunlop as approved by the GE for Compressor/ AHU etc. complete all as specified and directed.

S & F in replacement unserviceable worn out 'V' belt of model A-1650 make Fenner or equivalent in Nirlon/Dunlop as approved by the GE for Compressor/ AHU etc. complete all as specified and directed.

S & F in repairs for expansion valve suitable for AC plant of 75 TR/80TR chillar unit, comlete all as specified and directed, Make: DANFOSS / SPORLAN / RANCO. Model No :MVE-42

All as per item No. 49 above but for AC 30/40 TR chillar unit, Model no MVE-26

M & L for replacement of following capacity existing unserviceable / defective ampere meter digital type of size 96 x 96mm with and including CT, complete all as specified & directed, Make : AE / ENERCON / SECURE / L&T / TRINITY

0 to 20Amps

0 to 30Amps

0 to 50Amps

M & L for replacement of unserviceable Cooling Tower accessories i.e. Nozzelles, water inlet/out pipe and filter, fanblade, fan bulb, fan shaft, 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 cooling tower of 21 to 40TR of FRP Basin, complete all as specified and directed. Note : Extra PVC fills required to complete the job shall only be measured and paid separately as supply only to the extent required and ordered and cost of all the other elements to make the cooling towers completely functional shall be deemed to be included in the quoted rates.

Pumping down the existing refrigerant from the plant of 75/80 TR capacity, carrying out the leakage testing of plant with the pressure of Nitrogen gas and monitoring for 24hrs to assess leakages, rectification of leakage by brazing & replacement of necessary gaskets wherever required, vacumizing of the plant by vaccum pump and keep-it upto 24 hours for testing and 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 etc complete including testing of the plant for smooth functioning complete all as specified & directed.

Pumping down the existing refrigerant from the plant of 60 TR capacity, carrying out the leakage testing of plant with the pressure of Nitrogen gas and monitoring for 24hrs to assess leakages, rectification of leakage by brazing & replacement of necessary gaskets wherever required, vacumizing of the plant by vaccum pump and keep-it upto 24 hours for testing and 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 etc complete including testing of the plant for smooth functioning complete all as specified & directed.

Pumping down the existing refrigerant from the plant of 15/30 TR capacity, carrying out the leakage testing of plant with the pressure of Nitrogen gas and monitoring for 24hrs to assess leakages, rectification of leakage by brazing & replacement of necessary gaskets wherever required, vacumizing of the plant by vaccum pump and keep-it upto 24 hours for testing and 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 etc complete including testing of the plant for smooth functioning complete all as specified & directed.

S & F in replacement loader / Unloader coil 230 Volt, 50HZ for solenoid valve suitable for compressor SMC 6-65 / 8- 65 Model, Make : ACCEL

All as per item No. 56 above but for SMC 8-100, Make ACCEL.

Taking down existing unserviceable Shaft Seal assembly and in lieu S & F new Shaft Seal Assembly of Make ACCEL including tear gasket, nuts, bolts, washers etc. and testing for leakage of refrigerant suitable for 75/80 TR Capacity chiller unit, Make -ACCEL, complete all as specified and directed.

All as per item No. 58 hereinabove but Shaft seal Assembly of Make -ACCEL for 30/40 TR capacity chiller unit complete all as specified and directed.

S & F in replacement contactor type ML-2.0, 415Volt, 50Hz for star delta starter for motor of compressor, water pump and chiller pump etc. complete all as specified and directed, Make L & T/ Marline - Garline/ SIEMENS/ Schneider

S & F in replacement contactor type ML- 3, 415Volt, 50Hzfor star delta starter for motor of compressor, water pump and chiller pump etc. complete all as specified and directed. Make L & T/ Marline - Garline/ SIEMENS/Schneider

S & F in replacement contactor type ML- 6, 415Volt, 50Hz for star delta starter for motor of compressor, water pump and chiller pump etc. complete all as specified and directed. Make L & T/ Marline - Garline/ SIEMENS/Schneider

S & F in replacement contactor type LCD-132 / LCD-150, 415Volt, 50Hz for star delta starter for motor of compressor, water pump and chiller pump etc. complete all as specified and directed. Make L & T/ Marline - Garline/ SIEMENS/Schneider

Supply only PVC fills of size 600mm x 150mm x 150mm complete all as specified and directed.

Supply only PVC fills of size 600mm x 300mm x 150mm complete all as specified and directed.

M & L for replacement of relay for 100 HP Starter installed in Panel Board of AC Plant Installation, complete all as specified and directed, Make : L & T / SIEMENS.

M & L for replacement of relay for 40 HP Starter installed in Panel Board of AC Plant Installation, complete all as specified and directed, Make : L & T / SIEMENS.

M & L for replacement of relay for 20/25 HP Starter installed in Panel Board of AC Plant Installation, complete all as specified and directed, Make L&T / Siemens.

M & L for replacement of relay for 10 /15 HP Starter installed in Panel Board of AC Plant Installation, complete all as specified and directed, Make L&T / Siemens.

M & L for replacement of relay for 7.5/5 HP Starter installed in Panel Board of AC Plant Installation, complete all as specified and directed, Make L&T / Siemens.

M & L for replacement of Timer 800 SD installed in Panel Board of AC Plant Installation, complete all as specified and directed, Make L&T or Siemens

M & L for replacement of Indicator lamp RBY, 230 V, installed in Panel Board of AC Plant Installation, complete all as specified and directed, Make L&T / Siemens/C&S.

Replacement of unserviceable MS pipe, heavy grade of following sizes (condenser water tubing from the cooling tower area) including provision of all fittings, welding and connected works as required for smooth functioning of AC Plants, complete all as specified and directed, Make : TATA/JINDAL :-

150mm bore

125mm bore

100 mm bore

80 mm bore

50 mm bore

Supply, Fabrication, Installation, Testing and Commissioning of ducting for supply/Return made out of GI steel metal 22 gauge, Zinc coated complete with all standard accessories, flanges, G I Hardware, Self Adhesive elastomeric foam gasket, support etc as per IS-655, complete all as specified and directed.

M&L for duct insulation (50mm thick) with resin bonded fibre glass wool roll of density 24 Kg/Cum, with factory laminated aluminium vapour barrier, as specified and including provision of the followings : (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 miss-scale, dirt, dust, grease and other foreign materials, taking special care so that all duct joints are sealed against any leakage. (b) M&L applying rubber based adhesive CPRX compound. (c) M&L for sealing of all longitudinal joints and circular overlaps with and including aluminium foil tape 50mm wide, to make the insulation leakproof. (d) M&L for securing the insulation with and inculding mechanically fastened nylon / steel straps of size 50mm wide at maximum intervals of 1.2 metre.

Suply and fix in repairs Cast Iron butterfly valve including flange, nuts, bolts, rubber, gaskets etc suitable for 50mm bore pipe, complete all as specified and directed.

Suply and fix in repairs Cast Iron butterfly valve class PN-16 including flange, nuts, bolts, rubber, gaskets etc suitable for 80mm bore pipe, complete all as specified and directed.

Suply and fix in repairs Cast Iron butterfly valve PN-16 including flange, nuts, bolts, rubber, gaskets etc suitable for 100mm bore pipe, complete all as specified and directed.

Suply and fix in repairs Cast Iron butterfly valve PN-16 including flange, nuts, bolts, rubber, gaskets etc suitable for 150mm bore pipe, complete all as specified and directed.

Suply and fix in repairs Cast Iron Non-return butterfly valve PN-16 including flange, nuts, bolts, rubber, gaskets etc suitable for 100mm bore pipe, complete all as specified and directed.

Suply and fix in repairs Cast Iron Non-return butterfly valve PN-16 including flange, nuts, bolts, rubber, gaskets etc suitable for 150mm bore pipe, complete all as specified and directed.

Supply / Fixing in repairs volt meter and ammeter after removing old volt meter.

Repair/installation upto 150 TR chiller after removing suction / discharge pipe line of gas / water transporting the chiller to workshop, opening both and flange of chiller, cleaning the shell side of chiller and copper tubes with fresh water, pressure testing with water, keeping chiller 24 hrs of pre testing, chocked copper tubes 3/4" 120 nos removed the existing chiller after brazing / welding closing the both end flange with new gasket after changing the nuts and bolts ,pressure testing carried out after changing the tubes, transporting the chiller to site complete with new nuts & bolts in orginal position connecting suction / discharge gas line by welding & brazing, vaccumising the system, pressure testing N2 gas if no leakage found, gas charging with required R22 Insulating the chiller nitrile rubber sheet can chiller body and suction / discharge gas pipeline in orginal position testing the system for smooth functioning all as specified & directed.

M & L for preparation of old painted / unpainted surfaces of any description, including taking out of parts / components under painting (if required) from any position of any capacity AC Plant and applying one coat of epoxy paint (with colour code maintained as per relevant IS) including marking with flow directions (of approved colour) complete comprsing comprssor , motor pumps, conductors , water pipe lines etc

Supply and fixing AHU filters 10.0 micron 98% efficiency of existing suitable size for AHU after removing old unserviceable AHU filters.

Supply fix in repair, microprocessor suitable for water cooled chiller 60/30TR model CWCDR040 OMNT replace MPD / VPD, PLC, circuit wiring if faulty make microprocessor with display functional in auto tempreature stage, suction pressure / discharge pressure, CHW out temp after testing complete.

S & F in repairs for expansion valve suitable AC 30/40 TR chillar unit complete all as specified and directed., Make Danfoss

Supply and fixing filter dryer core after removing old U/s filter dryer core complete all as specified and directed., Make: DANFOSS

Supply and fix in repairs chiller Water Sensors in various AC plants complete all as specified and directed.

Taking down the defective flexible cable PVC insulated multistranded copper / Aluminium conductor of 16 Sqmm 3 Core and supply and fix new flexible PVC insulated multistranded copper conductor of 1100 volts grade complete.

Taking down the defective flexible cable PVC insulated multistranded copper / Aluminium conductor of 1.5 Sqmm 6 Core and supply and fix new flexible PVC insulated multistranded copper conductor of 1100 volts grade complete.

Taking down the defective crank shaft and supply and fix new crank shaft of suitable size for compressor SMC 6-65 / 8- 65 /8-100 Model complete all as specified and directed.

somnath engineering corporation

Darpan Construction

shakti engineering and electrical works

sapana enterprises