Military Engineer Services-MES has published Tender For Servicing/Maintenance/Minor Repairs Upto 30 Tr Central Type Ac Plants And Other Allied Works At Naval Dockyard, Visakhapatnam Under Ge (I) Dm Visakhapatnam.. Submission Date for this Tender is 06-03-2024. HVAC Tenders in visakhapatnam Andhra Pradesh. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 15-Feb-2024 | CORRIGENDUM NO 01 | BOQ | 28-02-2024 |
| 2 | 28-Feb-2024 | Bid Auto Extn Corrigendum | Bid Auto Extn Corrigendum | 06-03-2024 |
| Sl. No. | Item Description |
| 1 | Preventive maintenance of central type AC plant by carrying out routinecheck of the Plant complete for smooth functioning all as per manufacturer"s instructions and as directedfor 15.0 TR x 03 Nos installed at 20 MOUT bldg including attending to under mentioned jobs to ensure its satisfactory performance:- Note: Quoted Rates are deemed to be for carrying out checks as under :- (i)Contractor has to deploy manpower at the worksite to attend the breakdown calls received from representatives during two shifts throughout the week including sundays & holidays and on emergencies in third shift shall be attended,preventive maintenance for the entire duration of contract.It is the contractors responsibilityto make the unit functional and sufficient stock of spares shall be maintained to rectify the breakdown within scheduled period. Cleaning, stacking,sorting,handling and upkeeping of maintenance shall be carried out by contractor. (ii)Checking the system for visual leaks at all flare fittings and arresting. |
| 2 | (iii)Carrying out leak test with soap solution in case reports indicate frequent loss/recharging of refrigerant into the system whenever required (iv)Checking operation ,suction& discharge pressures.In case of any abnormality identifying and correcting the same (v)checking and setting of safety controls such as HP/LP cutouts,overload protections and thermostats etc. (vi)Cleaning of pre air filters and replacing the same if necessary (vii)Checking lubricating oil level at the sight glass if found below the normal level the problem shall be analyzed and rectified. (viii)Running of standby unit and observe for satisfactory performance. (ix)Checking the incoming voltage and running currents and take appropriate measures. (x)checking for any abnormal noise/vibration from moving parts such as compressors,motors,fans etc in case of any abnormality,investigating and correcting the same (x)checking and rectifying any water leaks and arresting them |
| 3 | (xi)Checking the operation of controls and making them functional (xii)Checking and cleaning of fan,runner blades and replace if required (xiii)Cleaning cooling coils by cleaning agent (CFC free) (xiv)Checking the cooling tower water level (xv)Checking the water level in the makeup water tank. (xvi)Starting and checking the running condition of cooling tower fan (xvii)Starting the pump and checking the running condition including checking the NRVs and arresting the leaks (xviii)Cleaning condensate drain tray (xix)Checking the cooling tower nozzles for proper spray and replacing the same if necessary. (xx) Descaling the condenser and replacing the condenser end shield gaskets (xxi)Record of these shall be maintained and submitted monthly to engineer in charge |
| 4 | Note :-The above quoted rate is inclusive ofall spare parts apart from below mentioned spare parts which will be paid seperately to make the unit completely functional, T&P manpower required in the site |
| 5 | All as per item No. 1.00 above,but for 25 TR x 3 Nos. at 43 central bldg |
| 6 | All as per item No. 1.00 above,but for 20 TR x 3 Nos. at 43 central bldg |
| 7 | All as per item No. 1.00 above,but for 11 TR x 2 Nos. at 61 bldg |
| 8 | All as per item No. 1.00 above,but for 20 TR x 2 Nos. at 15 bldg |
| 9 | All as per item No. 1.00 above,but for11 TR x 2 Nos. at 17 bldg |
| 10 | All as per item No. 1.00 above,but for20 TR x 2 Nos. at GT bldg |
| 11 | All as per item No. 1.00 above,but for15 TR x 2 Nos. at 37 bldg |
| 12 | Repairs, overhauling and servicing ofAC Plant compressor upto 30 TR by stripping out both end covers, cylinder head, cylinders, connecting rod, crank shaft, oil pump, side covers, bush bearings etc.,and refrigerant taking the cylinder for reuse/replacement(if available) of unserviceable worn out parts in the compressor,leak testing with CO2 gas under constant pressure of 250 PSI after complete transfer of refrigerant gas from the entire system, rectification of leakagesincluding cutting and brazing the refrigeration pipes wherever required, , teflon washers of valves, copper tubing, flare nuts etc., neutralizing after the pressure hold good for at least 24 hours vacuumization of system, testing and commissioning of air conditioning plants,cleaning the system with CO2/Nitrogen gas for leak detection for minimum 24 Hrs, after flushing out the system, vacuumization and charging with refrigerant gas & compressor oil |
| 13 | and testing the unit on no load and full load conditions all as specified and directed.The rate quoted is inclusive of repair/replacement of spare parts such as sensors,Bushing with collar standard,Shaft seal assembly,Bearing bushing,Gear Wheel,Single frame (unload -65),Rocker for unload mechanism,Bearing cup,Spring holder and spring,Cup washer,Crank shaft,Half section of bearing standard, Bush for piston pin,Castie nut,Split pin,pulley and pulley belt,pistonwith pin & rings,Cylinder liner ,Unloading ring with pin,Tension spiral,Suction valve ring plate,Valve spring,Suction valve retaining plate,Discharge valve seat,Discharge valve ring plate,Oil pressure regulating valve,Safety valve assembly,Set of gasket,Set of neoprene “O” Ring,Set of dowty rings,Set of sealing rings,Crank shaft,Connecting rod,Piston,Piston pin,Piston lock,Suction reed,Suction valve springs,Discharge valve |
| 14 | springs,Discharge valve assembly,Valve plate,Spring lifter pin,Gasket set,bearings,Oil pump,Thrust washer,Shaft seal assembly with bush,Piston ring and oil ring,Cylinder line and replacement of suction reeds, discharge reeds, piston rings , oil rings and replacement of gasketsetc and any other items to make the unit functional.complete all as specified and directed. Note:- Supply only refrigerant gas, compressor oil for the compressors will be measured and paid under relevant items of Schedule ’A’ and rest of the spare parts required to make the unit functional is deemed to be inclusive of quoted rate. |
| 15 | Supply onlyR-22 gas. Make:-Refron 22/Floron 22/Mafron 22 |
| 16 | Supply only compressor oil. Make:-Servo/N-68 ofHPCL |
| 17 | Material and labour for descaling of upto 30TR condensers by using HCL acid with continuous circulation method using circulation pump, finally neutralizing with fresh water, opening both end covers of shell and tube condensers, cleaning of copper tubes manually by using nylon brushes, re-fixing the end covers with new neoprene rubber gaskets, commissioning after complete performance test of the system all as specified and directed. Note:-The quoted rate is inclusive of descalling all the units in given single location |
| 18 | Material and labourfor taking out the defective pressure cut-outs of any range and model and supply & fix new pressure cut-outs, connecting the pressure lines/control wiring, leak testing and commissioning all as specified and directed Make:-Indofoss/Danfoss/Ranco (a)HP/LP pressure cut-out MP-15 |
| 19 | (b)Oil pressure cut-out MP-55 |
| 20 | S&F for VVE-70 model expansion valve of Sporlon make with necessary modification, brazing, lead testing and commissioning including taking out old unsv expansion valve complete all as specified and directed. |
| 21 | All as per item No. 15.00 above, but for VVE- 52 |
| 22 | All as per item No. 15.00 above, but for HVE- 16 |
| 23 | All as per item No. 15.00 above,but for HVE - 20 |
| 24 | Material and labour for monthly cleaning of entire indoor substation buildings inside wall, ceiling, floor and outside wall, plinth protection with suitable brush/broom/wiper, removing wild vegitation around substation building complete all as sjpecified and directed. |
| 25 | Taking down existing corroded/ unserviceable portion of MS flat/angle iron supports/ channels /Chequerred plates of various sizes fitted in electrical panels in AC plants,stair cases and supply & fix MS flat/ angle iron/Chequerred plates /ladders as per requirement including necessary bolting/ welding etc. all as as specified and directed. |
| 26 | Supply and fix in repairs pilot solenoid valveto the refrigerant system, reconnecting the refrigeration piping including leak testing, brazing/flaring to the pipe line wherereverrequiredall as specified and directed. Make :- Sporlon/Donfos |
| 27 | Supply and fix in repairs loading solenoid valveto the refrigerant system, reconnecting the refrigeration piping including leak testing, brazing/flaring to the pipe line wherereverrequiredall as specified and directed. Make :- Sporlon/Donfos |
| 28 | Material and labour for replacement of suction lines, oil pressure lines, HP/LP lines and cut out lines with existing size copper tubing including necessary brazing, flaring alongwith pumping down,and recharging after complete replacement of copper tubing, neutralizing after the pressure hold good for at least 24 hours vacuumization of system, testing and commissioning of air conditioning plants. Note : - Refrigerant gas shall be measured and paid for separately as supply only. and pressure testing by replacing old flare nuts complete |
| 29 | Material and labour for preparation of surfaces by scrapping and removing rusted portion with wire brush and applying one coat of synthetic enamel paint for complete refrigeration system, in-let/out-let pipe lines, compressor unit, condenser pump set, control LT panel board duct covers, cooling tower stand includingand applying one coat of white/colourwash to chiller pipe line all as specified and directed |
| 30 | Material and labour for complete checking, servicing/ rectification of electrical circuits for all units and control wiring showing phase sequence with proper lugging of AC plant control panel including replacement of fused indication lamps with new ones, cleaning of all power contacts, rectification of minor defects in Ammeters and Voltmeters including necessary modification/rewiring etc., testing and commissioning and painting the outer body all as specified and directed |
| 31 | Note :- Items apart from supply only which are required in site are deemed to be included in the quoted rate.Material such as indication lamp, ammeter, voltmeter will be measured and paid separately as supply only.Any other items equired to make the unit functional is deemed to be included in the quoted rate.Contractor has to deploy manpower at the worksite to attend the breakdown calls received from representatives during two shifts throughout the week including sundays & holidays and on emergencies in third shift shall be attended,preventive maintenance for the entire duration of contract.It is the contractors responsibilityto make the unit functional and sufficient stock of spares shall be maintained to rectify the breakdown within scheduled period. Cleaning, stacking, sorting, handling and upkeeping of maintenance shall be carried out by contractor. |
| 32 | SupplyMCCB of 250 Amps, 4 pole, 36 KA, AC supply50Hz, 415 V complete all as specified and directed. Make - Indo Asian/Havells/L&T |
| 33 | SupplyMCCB of 160 Amps, 4 pole, 36 KA, AC supply50Hz, 415 V complete all as specified and directed. Make - Indo Asian/Havells/L&T |
| 34 | SupplyMCCB of 100 Amps, 4 pole, 36 KA, AC supply50Hz, 415 V complete all as specified and directed. Make - Indo Asian/Havells/L&T |
| 35 | SupplyMCCB upto 63 Amps, 4 pole, 36 KA, AC supply50Hz, 415 V complete all as specified and directed. Make - Indo Asian/Havells/L&T |
| 36 | SupplyPower contactor 32 Amps, 3 pole, 415 V complete all as specified and directed. Make - Indo Asian/Havells/L&T/ ABB/Schneider |
| 37 | Supply and fix rubber insulating mat in front of LT panel board of size 3 mm thick, 1 m width up tp 3.3 KV all as specified and directed. Make :- RPG or equivalent as approved by GE. |
| 38 | Supply digital electronic Ammeter (0-100 amps range)withbuilt in selector switch suitable for LT 415 V panel flush pattern square type 96 mm x 96 mm with adopter completeall as specified and directed. |
| 39 | Supplydigital electronic Volt meter (0-500 volts range) withbuilt in selector switch suitable for LT 415 V panel flush pattern square type 96 mm x 96 mm with adopter completeall as specified and directed |
| 40 | Supplyindication lamps (LED type) red, yellow and blue in colours of 22.5 mm dia to monitor on LT panel board suitable for 240 V AC supply and taking down unserviceable indication lamps all as specified and directed. |
| 41 | Supply and fix pressure gauge for suction/discharge refrigerant lines and water lines of square/round type 2"/4" dial of following ranges for Package/Central type AC plants including taking down old unserviceable pressure gauge complete all as specified directed Make -Air Master/Febig/Scientific (a)0-150 PSIfor refrigerant line |
| 42 | (b)0-300 PSIfor refrigerant line |
| 43 | (c)0-12 Kg./cm2for water line |
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