REPAIR/ REPLACEMENT ESSENTIAL REPAIR TO SUPPLY/ RETURN DUCTS, AHU FILTERS AC PLANTS INCL CERTAIN ESSENTIAL SPARES, PAINTING WORKS AND ALLIED WORKS IN NAD EXPLOSIVE/ NON EXPLOSIVE AREA AND OUTSIDE AREA AT NAVAL STATION KARANJA

Amount

Supply and fix in repairs cooling tower fan assembly with low speed fan with noise level not exc 75 dBa made out of propeller type light weight solid/ hollow FRP rust resistant with statically and dynamically balanced blades suitable for 70 TR and above capacity AC plants complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs cooling tower fan assembly with low speed fan with noise level not exc 75 dBa made out of propeller type light weight solid/ hollow FRP rust resistant with statically and dynamically balanced blades suitable for 61 to 70 TR capacity AC plants complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs cooling tower fan assembly with low speed fan with noise level not exc 75 dBa made out of propeller type light weight solid/ hollow FRP rust resistant with statically and dynamically balanced blades suitable for 51 to 60 TR capacity AC plants complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs cooling tower fan assembly with low speed fan with noise level not exc 75 dBa made out of propeller type light weight solid/ hollow FRP rust resistant with statically and dynamically balanced blades suitable for 31 to 50 TR capacity AC plants complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs cooling tower fan assembly with low speed fan with noise level not exc 75 dBa made out of propeller type light weight solid/ hollow FRP rust resistant with statically and dynamically balanced blades suitable for 20 to 30 TR capacity AC plants complete all as specified and as directed by Engr-in-charge. Notes for item No. 1 to 5: (i) Fan speed shall not exc 60 MPS. Outlet velocity of air shall not be less than 610 mtrs/ min. (ii) Fan shall be protected by a fan guard and bird screen of galvanised steel construction. (iii) G SS/ SS 304 fan guard shall be provided over the fan motor for protection against rain water.

Supply and fix in repairs sprinkler assembly complete with header nozzles made out of galvanised iron suitable to fix in cooling towers of 71 TR and above capacity AC plants complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs sprinkler assembly complete with header nozzles made out of galvanised iron suitable to fix in cooling towers of 61 to 70 TR capacity AC plants complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs sprinkler assembly complete with header nozzles made out of galvanised iron suitable to fix in cooling towers of 51 to 60 TR capacity AC plants complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs sprinkler assembly complete with header nozzles made out of galvanised iron suitable to fix in cooling towers of 31 to 50 TR capacity AC plants complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs sprinkler assembly complete with header nozzles made out of galvanised iron suitable to fix in cooling towers of below 30 TR capacity AC plants complete all as specified and as directed by Engr-in-charge.

Supply, assembly and erection in repair of GI sheet with C&SS rectangular/square duct made out of 'L' shapped hollow profile, duly factory boxed, including all accessories such as corner, cleats, carraige bolt, gasket and appropriate sealant on longitudinal joint etc., complete of size 24 gauge complete all as specified and as directed by Engr-in-charge.

Material and labour in repair for duct insulation with resin bonded fibre glass wool roll of density 24 Kg/Cum, with factory laminated aluminium vapour barrier, thickness of insulation 50mm including the following complete all as specified and as directed by Engr-in-charge. (a) Cleaning the duct surface (to be insulated) by scrapping carefully with wire brush etc. to make the surface completely free of milllscale, dirt, dust, grease and other foreign materials, taking special care so that all duct joints are sealed against any leakage. (b) Applying rubber based adhesive CPRX compound. (c) Sealing of all longitudinal joints and circular overlaps with and including aluminium foil tape 50mm wide, to make the insulation leakproof. (d) Securing the insulation with and including mechanically fastened nylon/ steel straps of size 12mm/ 50mm at maximum intervals of 1.2m.

Material and labour in repair for duct insulation with resin bonded fibre glass wool roll of density 24 Kg/Cum, with factory laminated aluminium vapour barrier, thickness of insulation 40mm including the following complete all as specified and as directed by Engr-in-charge. (a) Cleaning the duct surface (to be insulated) by scrapping carefully with wire brush etc. to make the surface completely free of milllscale, dirt, dust, grease and other foreign materials, taking special care so that all duct joints are sealed against any leakage. (b) Applying rubber based adhesive CPRX compound. (c) Sealing of all longitudinal joints and circular overlaps with and including aluminium foil tape 50mm wide, to make the insulation leakproof. (d) Securing the insulation with and including mechanically fastened nylon/ steel straps of size 12mm/ 50mm at maximum intervals of 1.2m.

Material and labour in repair for accoustic lining to the ducting by using FG crown 200x25mm thick rigid board density 32 Kg/cum covered with Rptissue and 28 gauge aluminium. Perforated sheet and using GI nuts, bolts and washer for the entire duct etc., complete all as specified and as directed by Engr-in-charge.

Supply and fix in repair duct /wall mounted fire dampers 16 C.G.I sheet with fusible plug complete all as specified and as directed by Engr-in-charge.

Supply and fix in repair aluminium aerofoil volume control dampers complete all as specified and as directed by Engr-in-charge.

Material and labour in repair for powder coated extruded aluminium supply /return air grills complete all as specified and as directed by Engr-in-charge.

Cleaning of cooling coil and air filters of air handling units installed at air conditioning plant by removing air filters and fixing back after cleaning with air blower, water and cleaning agent. Cleaning of cooling coil with wire brushes and air blower and water spray pump after spraying cleaning of aluminium fins and straightening the fins of cooling coil using suitable brushes for following capacity of air handling untis complete all as specified and as directed by Engr-in-charge.

2500 CFM to 5000 CFM

5500 CFM to 11000 CFM

12000 CFM to 18000 CFM

19000 CFM to 25000 CFM

Material and labour for repairs to leakages /damaged cooling coil by blocking/ by passing the corroded/ leakaged tube of DX coil, involving following activities:- (i) Removing the cooling coil from Air Handling unit and transport to the contractor /approved workshops. (ii) Leakage testing of the DX coil using nitrogen gas and finding the leakage tubes. (iii) Blocking/ By passing the leakaged copper tube and connect the copper tube with suitable new 'U' bends etc., by brazing. (iv) Straighten the fins of cooling coil using suitable brushes. (v) Painting of cooling coil with two coats of aluminium paint. (vi) Reasembling the cooling coil to the Air handling unit and again testing with nitrogen to the complete system for 08 hours for following capacity of the Air handling Units complete all as specified and as directed by Engr-in-charge.

2500 CFM to 5000 CFM

5500 CFM to 11000 CFM

12000 CFM to 18000 CFM

Above 18000 CFM and upto 25000 CFM

Material and labour for repairs to chiller of AC plant by blocking the damage/corroded tubes involving following activities:- (i) Disconnecting the side covers fo the chiller and the chiller valves from their existing positions. (ii) Leakage testing of the chilller using pressurized nitrogen gas and finding the leakaged tubes. (iii) Blocking the damaged /leaked tubes by brass plugs. (iv) Re-fixing the side covers of the chiller and the chiller valves from their existing positions with new nuts, bolts, rubber gasket and washer. (v) Testing the system for any leakage by using pressurized nitrogen gas and by vaccumising the system. (vi) Preparing the damage surfaces of chiller as per exisitng including repairs to damaged insulation and painting as per exisitng shade for following capacities of chillers complete all as specified and as directed by Engr-in-charge.

16 to 25 TR Capacity

26 to 50 TR capacity

51 to 90 TR capacity

Material and labour for repairs to condenser of AC plant by blocking the damaged/ corroded tubes involving following activities:- (i) Disconnecting the side covers of the condenser from their existing positions. (ii) Leakage testing of the condenser using pressurised nitrogen gas and finding the leaked tubes. (iii) Blocking the damaged /leaked tubes by brass plugs. (iv) Re-fixing the side covers of the condenser and the condenser valves from their existing positions with new nuts, bolts, rubber gasket and washers etc., and painting the surface with approved shade of synthetic enamel paints for following capacities of condenser complete all as specified and as directed by Engr-in-charge.

upto 25 TR Capacity

26 to 50 TR capacity

51 to 130 TR capacity

Supply and replacement in repairs pedastal bearing P-208 heavy duty complete all as specified and as directed by Engr-in-charge.

Supply and replacement in repairs pedastal bearing P-207 heavy duty complete all as specified and as directed by Engr-in-charge.

Supply and replacement in repairs pedastal bearing P-206 heavy duty complete all as specified and as directed by Engr-in-charge.

Supply and fix regenerable coarse type AHU filter of size 600x600x50mm complete all as specified and as directed by Engr-in-charge.

Supply and fix regenerable coarse type AHU filter of size 600x500x50mm complete all as specified and as directed by Engr-in-charge.

Supply and fix regenerable coarse type AHU filter of size 600x400x50mm complete all as specified and as directed by Engr-in-charge.

Supply and fix regenerable coarse type AHU filter of size 600x300x50mm complete all as specified and as directed by Engr-in-charge.

Supply and fixing in repair CI Non return valves PN 1 with matching flanges, hardware all as per IS:5312 of following sizes complete all as specified and as directed by Engr-in-charge.

50mm bore

65mm bore

80mm bore

Supply and fixing in repair CI pot strainer/ Y strainer with matching flanges, gasket, hardware of following sizes complete all as specified and as directed by Engr-in-charge.

50mm bore

65mm bore

80mm bore

Supply and fix in repairs protection caps made out of GI Sheet of thickness 1.6mm with three GI strip supports of size 25x3mm for fixing with the cooling tower including GI nuts and bolts for fixing complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs cooling tower header with necessary nozzles etc., complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs auto capacity regulator solenoid valve including connecting of interlock wiring, nuts, bolts, wahsers etc., complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs coil for solenoid vlave connecting into liquid line including interlock wiring, nuts, bolts, washers etc., complete all as specified and as directed by Engr-in-charge.

Dismantling the existing AHU-09 complete with top panel side pedestal bearing MS fans MS scrolls shaft bottom trays of coil and fan section cooling coil motor and drive system filter including thermal insulation and re-assembling the same after carrying out repairs/ replacement with new MS fans, MS scrolls, MS shafts, bearing plates, pedestal bearing, bottom trays for fan section, bottom tray for coil section complete all as specified and as directed by Engr-in-charge.

Dismantling the existing AHU-11 complete with top panel side pedestal bearing MS fans MS scrolls shaft bottom trays of coil and fan section cooling coil motor and drive system filter including thermal insulation and re-assembling the same after carrying out repairs/ replacement with new MS fans, MS scrolls, MS shafts, bearing plates, pedestal bearing, bottom trays for fan section, bottom tray for coil section complete all as specified and as directed by Engr-in-charge.

Dismantling the existing AHU-12 complete with top panel side pedestal bearing MS fans MS scrolls shaft bottom trays of coil and fan section cooling coil motor and drive system filter including thermal insulation and re-assembling the same after carrying out repairs/ replacement with new MS fans, MS scrolls, MS shafts, bearing plates, pedestal bearing, bottom trays for fan section, bottom tray for coil section complete all as specified and as directed by Engr-in-charge.

Supply and fix in repair bottom tray for fan and coil section made out of MS sheet 16 gauge duly painted with two coats of synthetic enamel gray paint over a coat of red oxide primer with 25mm thick thermocoal insulation covered with tarfelt for AHU-09 complete all as specified and as directed by Engr-in-charge.

Supply and fix in repair bottom tray for fan and coil section made out of MS sheet 16 gauge duly painted with two coats of synthetic enamel gray paint over a coat of red oxide primer with 25mm thick thermocoal insulation covered with tarfelt for AHU-11 complete all as specified and as directed by Engr-in-charge.

Supply and fix in repair side panels with bearing plate for fan section made out of MS sheet 16 gauge duly painted with two coats of synthetic enamel grey paint over a coat of red oxide primer for AHU-09 complete all as specified and as directed by Engr-in-charge.

Supply and fix in repair side panels with bearing plate for fan section made out of MS sheet 16 gauge duly painted with two coats of synthetic enamel grey paint over a coat of red oxide primer for AHU-11 complete all as specified and as directed by Engr-in-charge.

Supply and fix in repair side panels with bearing plate for fan section made out of MS sheet 16 gauge duly painted with two coats of synthetic enamel grey paint over a coat of red oxide primer for AHU-12 complete all as specified and as directed by Engr-in-charge.

Supply and fix in repair back panel made out of MS sheet 16 gauge duly painted with two coats of red oxide primer and coat of grey enamel paint for AHU-09 complete all as specified and as directed by Engr-in-charge.

Supply and fix in repair back panel made out of MS sheet 16 gauge duly painted with two coats of red oxide primer and coat of grey enamel paint for AHU-11 complete all as specified and as directed by Engr-in-charge.

Supply and fix in repair top panel for coil section/ fan section/ filter section for AHU-12 complete all as specified and as directed by Engr-in-charge.

Supply and fix in repair MS shaft suitable for type AHU-09 complete all as specified and as directed by Engr-in-charge.

Supply and fix in repair MS shaft suitable for type AHU-11 complete all as specified and as directed by Engr-in-charge.

Supply and fix in repair MS shaft suitable for type AHU-12 complete all as specified and as directed by Engr-in-charge.

Material and labour in repairs strip heater finned 2" wide aluminised steel fins of 415 volt 1.5 to 3 KW capacity to match with the existing complete all as specified and as directed by Engr-in-charge.

Material and labour for thermal insulation to chilled water line, ducts, chillers, suction pipe with one coat of bituminous paint, polythelyne sheet, fiberglass wool insulation upto 50mm thick, wiremesh and cover with 24 SWG aluminium clading complete all as specified and as directed by Engr-in-charge.

Supply and fix for MS fan 18"x18" suitable for AHU 12, AHU 11 and AHU 9 duly painted with two coats of synthetic enamel paint delight in colour and one coat of red oxide primer complete all as specified and as directed by Engr-in-charge.

Supply and fix for distributor of cooling coil suitable for AHU 9, 11 and 12 with necessary copper tube including cutting brazzing and testing with nitrogen gas complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs pressure gauge of range 30-150 complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs pressure gauge of range 0-200 complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs pressure gauge of range 0-300 complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs toggle switch of 5 Amp capacity complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs on-off push button pendants with elements red /green /orange complete all as specified and as directed by Engr-in-charge.

Supply and fix for rotational moulded polyethylene water storage tanks capacity 10000 Ltrs (cylindrical vertical with closed top) hoisted and fixed in position, taking down old unserviceable PVC tank complete all as specified and as directed by Engr-in-charge.

Supply and fix for rotational moulded polyethylene water storage tanks capacity 5000 Ltrs (cylindrical vertical with closed top) hoisted and fixed in position, taking down old unserviceable PVC tank complete all as specified and as directed by Engr-in-charge.

BRITE INDUSTRIES

AIRDOT ENGINEERING

somnath engineering corporation