Military Engineer Services-MES has published Tender For Repair / Maintenance / Servicing To The Ac Plants And Ups At Dolphin Hill Area Under Age E/M No-Ii Of Ge (U-I) Visakhapatnam. Submission Date for this Tender is 29-02-2024. UPS Tenders in visakhapatnam Andhra Pradesh. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 22-Feb-2024 | Bid Auto Extn Corrigendum | Bid Auto Extn Corrigendum | 29-02-2024 |
| Sl. No. | Item Description |
| 1 | M&L for carrying out de-scaling of shells and tubes water cooled type condenser of capacity 25 TR and of make Voltas / Bluestar, by disconnecting the inlet and outlet water connections and providing dummy to inlet and outlet and de-scaling the condenser by circulating de-scaling agent R-111 or equivalent chemical or organic compound at the proper ratio circulated chemical till removal of complete scale deposit inside copper tubes and opening both end cover by condenser, brushing copper tubes with appropriate size nylon brush, removing complete scale and flushing and boxing up both end covers, connecting up water inlet & outlet connections including renewal by damaged rubber gaskets and leak testing the joints for water leakage complete all as specified and as directed by Engineer-in-charge. |
| 2 | All as per Sl item No. 1.00 but of capacity 40 to 50 TR |
| 3 | M&L for carrying out leak test for chiller type systemofcapacity 25 TR & make Voltas/ Blue star, shell and condensers by extracting the existing available gas from system to separate cylinder storing and pressure testing the complete system with dry nitrogen and checking the leaks, identifying the leaks, rectification of leaks by brazing / welding at the leak points / replacing by damaged valve gland package / gasket etc and after rectification of all the leaks pressure testing the complete system up to 300 PSIG at high side, 200 PSIG at low side of the system, holding the pressure for 24 hrs and vaccumising the complete system after releasing the dry nitrogen and charging the refrigerant gas to system, testing & commissioning the plant, checking all controls complete all as specified and as directed by Engineer-in-charge. |
| 4 | All as per Sl item No. 3.00 but capacity of 40 to 50 TR |
| 5 | Carrying out repairs and Maintenance, attending to breakdown of 25 to 50 TR variable speed screw type liquid chiller central AC plant of Make : Voltas as per scope of work given below including carrying out general repairs / servicing to ensure smooth and trouble free operation of plants to the entire satisfaction of users / department all as directed by Engineer-in-charge. (Contd...) |
| 6 | Scope of Work:- (a) Periodicalmonitoring / Inspecting the complete ac plant and carrying out preventive/ periodical maintenance to ensure smooth functioning of AC plant. The periodical inspection for preventive maintenance shall be carried out by technician/service engineer of OEM once in a quarter other than breakdown calls for monitoring the operational condition of AC plant including for preventive maintenance/breakdown calls whenever required. Each preventive maintenance & breakdown call if any will be measured Job (b) Visual inspection for oil traces, Air heat exchanger (condenser) cleaning, check for removed protection devices, and improperly closed doors/ covers, check that the temperature difference between the heat exchange inlet and outlet is correct, check the refrigeration system, motors and starters for performance and healthy condition of plant. (c) Checking the system for leaks and rectification of leaks if any. (d) Taking a set of readings and evaluating the same to ensure the satisfactory performance of the plant. (e) Checking the refrigeration control system for operation and adjusting the settings as and when required. (f) General Cleaning the evaporator and condensing coils (g) General Lubrication ofthe bearings of motors, pumps and fans as and when required. (h)Inspection of belts, which includes adjusting the tension including replacement if required. (j)Filling only the refrigerant as a result of leak arising from the system due to standard wear and tear. (k)Repairing/ replacing the components of the equipment at site or at workshop as required (l)To check proper functioning of microprocessor and take control test. (m) Intimating any breakdown requiring specific major repairs/overhauling to the contractor/ department for immediate rectification of defect. (n) Attending the complaints/ breakdown whenever received by user /JE /Engineer in charge and attending the complaint for same within 24 hrs of receipt. (o) The repair / replacement of all spare parts like ICVC Boards, compressor / fan motor rewinding,electrical switch gears, contactors, PCB, refrigerant gas etc., are not in the scope of this item. These items shall be measured and paid separately under relevant items. (p) Any minor spares/ repairs items which are required to keep the plant in operational are deemed to be included in scope of this item. |
| 7 | Supply & fixing / filling in repairs of following spares suitable forvariable speed screw type liquid chillar of capacity 25 to 50 TR & of Make voltas / Bluestar complete all as specified and as directed by Engr-in-charge.:- |
| 8 | Oil cartridge filter |
| 9 | Compressor oil Make : HP Sheetal /Emkarate / Speed Air / Z Premium / Vacpac oil / MAG1 / Danfoss |
| 10 | Temperature sensor |
| 11 | Lp sensor |
| 12 | Chillar flow switch with connection pipe |
| 13 | Pressure guage 0-7 kg/cm2 |
| 14 | MNX 25 contactor 220 V, 50Hz |
| 15 | MNX 40 contactor 220 V, 50Hz |
| 16 | MNX 12 contactor 220 V, 50Hz |
| 17 | MNX relay 9-14 AMPS |
| 18 | Timer Star / delta |
| 19 | Auxillary block |
| 20 | Drier assly complete suitable for above model package unit |
| 21 | Ventilating fansuitablefor HVAC drivepanel of the AC plant |
| 22 | PCB Mother board |
| 23 | M&L for carry out the repair to cooling tower fan motor 5 to 7.5HP flange mounted extended shaft type, including taking down from position, transporting to local work shop, dismantling the motor, replacing amaged unserviceable shaft, bearings, rusted nuts & bolts including servicing motor by motor varnishings to winding etc. assembly back and installation to position and testing comissioning complete all as specified and as directed by Engr-in-charge. |
| 24 | S&F in repair cooling tower motor base frame, base plate, Nut & bolts with new all as per existing size and shape, suitable for 25 to 40 TR capacitycomplete all as specified and as directed by Engr-in-charge. |
| 25 | M&L for taking down defective unserviceable fan motor and assembly from the cooling tower and supply and fixing new fan motor of 5 HP, 3 phase, 720RPM, 440V, 50Hz of extended type shaft, flange mounted with IP-55 Degree of protection, weather proof along with fan assembly with 1300 mm sweep by 04 fan blades with suitable hub assembly clamps nut & bolts etc. Including connecting the power supply and testing complete all as specified and as directed by Engr-in-charge. |
| 26 | Supply and charge refrigerant gas R-22 / R 407 C incuding leak testing the system, arresting the leaks with necessary materials like gasket/ "o" rings/ washers all as directed by Engineer-in-charge. Make : Mafron / Freon / Floron |
| 27 | M&L for complete leak testing indoor and outdoor units, complete refrigerant pipe with nitrogen gas, locating the leaks, rectify the leak by brazing / welding and pressure tetsing the complete system for the capacity up to 45 TR air cooled package AC system all as specified and as directed by engineer-in-charge. |
| 28 | Carrying out repairs and Maintenance, attending to breakdown of45 TR capacity package type and 02 x 45 TR Scroll type, chiller type plant, water cooled / air cooled AC plantas per the following scope of the work given below including carrying out general repairs / servicing to ensure smooth and trouble free operation of plants to the entire satisfaction of users/department all as directed by Engineer-in-charge. (Contd...) |
| 29 | Scope of Work : (a) Periodicalmonitoring / Inspecting the complete ac plant and carrying out preventive/ periodical maintenance to ensure smooth functioning of AC plant.The periodical inspection for preventive maintenance shall be carried out by technician/service engineer of OEM once in a quarter other than breakdown calls for monitoring the operational condition of AC plant including for preventive maintenance/breakdown calls whenever required. Each preventive maintenance & breakdown call if any will be measured Job (b) Visual inspection for oil traces, Air heat exchanger (condenser) cleaning, check for removed protection devices, and improperly closed doors/ covers, check that the temperature difference between the heat exchange inlet and outlet is correct, check the refrigeration system, motors and starters for performance and healthy condition of plant. (c) Checking the system for leaks and rectification of leaks if any. (d) Taking a set of readings and evaluating the same to ensure the satisfactory performance of the plant. (e) Checking the refrigeration control system for operation and adjusting the settings as and when required. (f) General Cleaning the evaporator and condensing coils (g) General Lubrication ofthe bearings of motors, pumps and fans as and when required. (h)Inspection of belts, which includes adjusting the tension including replacment if required. (j)Filling only the refrigerant as a result of leak arising from the system due to standard wear and tear. (k)Repairing/ replacing the components of the equipment at site or at workshop as required (l)To check properfunctioning of microprocessor and take control test. (m) Intimating any breakdown requiring specific major repairs/overhauling to the contractor/ department for immediate rectification of defect. (n) Attending the complaints/ breakdown whenever received by user /JE /Engineer in charge and attending the complaint for same within 24 hrs of receipt. (o)The repair/replacement of all spare parts like ICVC Boards, compressor / fan motor rewinding,electrical switch gears, contactors, PCB, refrigerant gas etc., are not in the scope of this item. These items shall be measured and paid separately under relevant items. (p) Any minor spares/ repairs items which are required to keep the plant in operational are deemed to be included in scope of this item. |
| 30 | Supply and fixing the following spares for carrying out repairs to Package air conditioning unit of make Voltas / bluestar / Carriercomplete all as specified and as directed by Engr-in-charge:- |
| 31 | Timer Star/ delta |
| 32 | Sealed compressor of capacity 11.6 / 12 TR Make: Dafoss/ Copeland |
| 33 | Fan blade suitable for above model package unit |
| 34 | Fan motor suitable for above model package unit |
| 35 | Drier assly complete suitable for above model package unit |
| 36 | Compressor oil suitable for scroll type hermaticaly sealed type compressor of P-180 grade Make:Danfoss / Copeland / Carrier |
| 37 | Chillar flow switch with connection pipe |
| 38 | Pressure guage 0-7 kg/cm2 |
| 39 | MNX 25 contactor 220 V, 50Hz |
| 40 | MNX 40 contactor 220 V, 50Hz |
| 41 | Auxillary block |
| 42 | MNX relay 9-14 AMPS |
| 43 | Condenser |
| 44 | S&F butterfly valve 100 mm bore with necessary rubber gasket, bolts, nuts and washer including taking out existing valve complete all as specified and as directed by Engineer-in-Charge. Make: Zoloto / L&T/ Audco / Leader |
| 45 | Carrying out repairs and maintenance, attending to breakdown of 1.5 to 3.5 TR capacity Tower AC plants including carrying out general repairs / servicing to ensure smooth and trouble free operation of plants to the entire satisfaction of Engineer-in-charge complete all as specified and as directed. |
| 46 | Carrying out repairs and maintenance, attending to breakdown of 1.5 TR capacity Split air cooled AC plant including carrying out general repairs / servicing to ensure smooth and trouble free operation of plants to the entire satisfaction of Engineer-in-charge complete all as specified and as directed. |
| 47 | M&L for dismantlingthe defectiveinduction motor of capacity 5 HP to 10 HP of any make 415 V, 4 Pole 1440 RPM, 50Hz of any duty or any class of insulation from the bed duly coupled with pump/ compressor/in AHU, transporting to work shop, removing burnt out winding from stator/ motor, rewinding with suitable gauge of super enamelled copper wire of approved make and replacing drive endand non drive end bearings, insulation materials, varnishing, heating, reassembling, testing and commissioning complete all as directed.Note: - Motors removed for rewinding shall be overhauled completely by replacing defective bearings and the quoted rate shall be deemed to be inclusive of the same. |
| 48 | Carrying out repairs and Maintenance, attending to breakdown ofAHU of central AC plant of Make : Voltas / Zeco as per the OEM instruction of maintenance to ensure smooth and trouble free operation of plants to the entire satisfaction of Engineer-in-charge complete all as specified and as directed. |
| 49 | M & L for dismantling the complete old defective insulation of AHU duct of central AC plant and S & F new insulation with removing dirt and rust over the AHU lines complete all as specified and as directed by Engineer-in-charge. |
| 50 | M & L for removing old painting, cleaning the surface with necessary tools & plants and painting AHU line of approximate dia 0.4 to 0.45m, from TS- II to UPS room with 2 coats of whitewash complete all as specified and as directed by Engineer-in-charge. |
| 51 | Supply & laying LT XLPE insulated, armoured heavy duty electric cable with alumimium conductor, 1100 volts grade, cross sectional area 25 Sqmm x 4 Core, laid in trenches / duct / on pole including taking down existing cable complete all as specified and directed. Make :- Havells / KEI / Polycab / Gloster / Finolex |
| 52 | All as per Sl item No. 21.00 but cross sectional area 70Sqmm x 3.5 Core |
| 53 | S&F MCCB 3 pole 400 Amps, thermal magnetic release adjustaple type, breaking capacity 36 KA, Ics = 100% Icu including necessary modification in the panel & taking down existing MCCB complete all as specified and directed. Make :- L&T / Havells / Panasonic/ Hager / ABB / Legrand / Indo Asian |
| 54 | All as per item No. 23.00 above but 250 Amps |
| 55 | S&F in repair MCB SPN 40 to 63 Amp, 10 kA, 240V"C" curve complete all as specified and as directed. Make :- L&T / Havells / Panasonic / Hager / ABB / Legrand / Indo Asian |
| 56 | M&L for carrying out repair / servicingto Air compressor with 1 HP motor including taking down from position, painting, air tank cleaning, motor rewinding installing to position and testing commissioning complete all as specified and directed by Engineer-in-Charge. |
| 57 | M&L for carrying out repair to air compressor motor 1.5 to 2 HP flange mounted extended shaft type, including taking down from position, transporting to local work shop, dismantling the motor, replacing damaged unserviceable shaft, bearings, rusted nuts & bolts including servicing motor by motor varnishing to winding etc. assembly back and installation to position and testing commissioning complete all as specified and directed by Engineer-in-Charge. |
| 58 | M&L for carrying out repair / servicingto De-Humidifier including taking down from position, transporting to local work shop, dismantling the motor, replacing damaged unserviceable shaft, bearings, rusted nuts & bolts including servicing motor by motor varnishing to winding etc. assembly back and installation to position and testing commissioning complete all as specified and directed by Engineer-in-Charge. |
| 59 | M&L for carrying out repairs and Maintenance, attending to breakdown of UPS of 80 to 120 KVA capacity including carrying out general repairs / servicing to ensure smooth and trouble free operation of plants to the entire satisfaction of Engr-in-Charge complete all as specified and as directed. |
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