REPAIR AND MAINTENANCE OF AC PLANTS, DG SETS AND UPS AT TS-1, TS-2, RUKMANI HUB AND OTHER AREAS OF DOLPHIN HILLS UNDER AGE EM NO-II OF GE(U-I) VISAKHAPATNAM

Amount

M&L for carry out the descaling of shells and tubes water cooled type condenser by disconnecting the inlet and out water connections and providing of dummy to the inlet and outlet and descaling the condenser by circulating the circulated descaling agent R-111 or equivalent chemical or organic compound at the proper ratio circulated chemical till remove complete scale deposited inside the copper tubes, and opening the both end cover by the condenser brushing the copper tubes with appropriate size nylon brush remove complete scale and flushing and boxing up the both end covers connecting up the water inlet & outlet connections including renewal by damaged rubber gaskets and leak testing the joints for water leakage for the capacity of 25 TR and of make : Voltas / Bluestar, shell and tube condensers all as directed by Engineer-in-charge.

All as per Sl item No. 1.00 but capacity of 40 to 50 TR

M&L for carry out leak test for the chiller type system by extracting the existing available gas from the system to separate cylinder storing and pressure testing the complete system with dry nitrogen and check the leaks , identifying the leaks, rectification of leaks by brazzing / 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 PSI at high side , 200 PSI 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 refrigerent gas to system and testing & comissioning the plant checking all controls for the 25 TR capacity of make : Voltas / Blue star, shell and condensers all as directed by Engineer-in-charge.

All as per Sl item No. 3.00 but capacity of 40 to 50 TR

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 / Bluestar as 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.

Scope of Work : (a) Periodical monitoring / 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 of the 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 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. 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.

Supply & Fixing/ filling of the following spares of variable speed screw type liquid chillar of capacity of 25 to 50 TR of Make : voltas/ Blue star for Repair/ replacement under relevant schedule item.

Oil cartridge filter

Compressor oil Make : HP Sheetal, Emkarate, Speed Air, Z Premium, Vacpac oil, MAG1,Denfos

Temperature sensor

Lp sensor

Chillar flow switch with connection pipe

Pressure gauge 0-7 kg/cm2

MNX 25 contactor 220 V ,50Hz,

MNX 40 contactor 220 V ,50Hz,

MNX 12 contactor 220 V, 50Hz

MNX relay 9-14 AMPS

Timer Star/ delta

Auxillary block

Drier assly complete suitable for above model package unit

Ventilating fan suitable for HVAC drive panel of the AC plant

PCB Mother board

M&L for carry out the repair to cooling tower fan motor 7.5HP/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.

M&L for replacing the cooling tower motor base frame, base plate, Nut & bolts with new all as per the existing size and shape as suitable 25 to 40 TR capacity.

M&L for taking down the defective unserviceable fan motor and assembly from the cooling tower and supply and fix the 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 1300mm sweep by 04 fan blades with suitable hub assembly clamps nut & bolts etc. Including connecting the power supply and testing all as specified as directed by Engr-in-charge.

Supply and charge refrigerant gas R-22 / R 407 C including 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

M&L for complete leak testing the in door and out door 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.

Carrying out repairs and Maintenance , attending to breakdown of 45 TR capacity package type and 02 x 45 TR Scrool type , chiller type plant, water cooled / air cooled AC plant as 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.

Scope of Work : (a) Periodical monitoring / 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 of the 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 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. 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.

Supply and fixing the following spares for carrying out repairs to package air conditioning unit of Make M/s Voltas/ M/s blue star/ M/s Carrier.

Timer Star/ delta

Sealed compressor of capacity 11.6/ 12 TR Make: Dafoss/ Copeland

Fan blade suitable for above model package unit

Fan motor suitable for above model package unit

Drier assly complete suitable for above model package unit

Compressor oil suitable for scroll type hermaticaly sealed type compressor of Make : Dafoss/ Copeland. Make of oil : P-180 or equivalent.

Chillar flow switch with connection pipe

Pressure guage 0-7 kg/cm2

MNX 25 contactor 220 V ,50Hz

MNX 40 contactor 220 V ,50Hz

Auxillary block

MNX relay 9-14 AMPS

M & L for taking down the corrorded and unserviceable butterfly valves of size 80 mm and its counter flanges, nut and bolts from the exisiting position and S & F butterfly valve with counter flanges, nut and bolts etc including welding and testing the leaks.

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 department all as specified and directed by Engineer-in-charge.

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 department all as specified and directed by Engineer-in-charge.

M&L for dismantling the defective induction 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 end and non drive end bearings, insulation materials, varnishing, heating, reassembling, testing and commissioning complete all as specified and 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.

Carrying out repairs and Maintenance , attending to breakdown of AHU 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 users/department all as specified and directed by Engineer-in-charge.

M & L for dismantling the 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 dircted by Engr-in-Charge.

M & L for removing old painting , cleaning the surface with necessary tools & plants and painting of AHU line of 300 mm diameter from TS- II to UPS room complete all as specified and dircted by Engr-in-Charge.

M&L for carrying out 'B' check for DG set 600 KVA, as per manufacturer's recommendation including replacement of fuel filters,air filters and oil filters, 'O' rings, engine oil, gasket, coolant etc complete all as specified and dircted by Engr-in-Charge.

M&L for carrying out 'B' check for DG set 500 KVA, as per manufacturer's recommendation including replacement of fuel filters,air filters and oil filters, 'O' rings, engine oil, gasket, coolant etc complete all as specified and dircted by Engr-in-Charge.

M&L for carrying out 'B' check for DG set 320 KVA, as per manufacturer's recommendation including replacement of fuel filters,air filters and oil filters, 'O' rings, engine oil, gasket, coolant etc complete all as specified and dircted by Engr-in-Charge.

M&L for carrying out 'B' check for DG set 250 KVA, as per manufacturer's recommendation including replacement of fuel filters,air filters and oil filters, 'O' rings, engine oil, gasket, coolant etc complete all as specified and dircted by Engr-in-Charge.

M&L for carrying out 'B' check for DG set 160 KVA, as per manufacturer's recommendation including replacement of fuel filters,air filters and oil filters, 'O' rings, engine oil, gasket, coolant etc complete all as specified and dircted by Engr-in-Charge.

M&L for carrying out 'B' check for DG set 125 KVA, as per manufacturer's recommendation including replacement of fuel filters,air filters and oil filters, 'O' rings, engine oil, gasket, coolant etc complete all as specified and dircted by Engr-in-Charge.

M&L for carrying out 'B' check for DG set 62.5/63 KVA, as per manufacturer's recommendation including replacement of fuel filters,air filters and oil filters, 'O' rings, engine oil, gasket, coolant etc complete all as specified and dircted by Engr-in-Charge.

M&L for carrying out 'B' check for DG set 20 KVA, as per manufacturer's recommendation including replacement of fuel filters,air filters and oil filters, 'O' rings, engine oil, gasket, coolant etc complete all as specified and dircted by Engr-in-Charge

M&L for Alternators warm up, cleaning the dust with dry blow air, megger the insulation values , measure the load / no load excitation voltages before & after maintenance and record the values of 600/500 KVA DG set complete all as specified and dircted by Engr-in-Charge.

All as per Item No. 29.00 but capacity of 320 KVA

All as per Item No. 29.00 but capacity of 250 KVA

All as per Item No. 29.00 but capacity of 160/125 KVA

All as per Item No. 29.00 but capacity of 62.5 / 63 KVA

All as per Item No. 29.00 but capacity of 20 KVA

M&L for De-scaling of radiator by dismantling the upper & lower tank and cleaning the core pipes with cleaning chemicals (radi wash), components and arrest the leaking core by brazing/ dummy with lead including cleaning of upper and lower tanks and replacing the upper and lower gaskets and required nuts, bolts, refixing the same including testing and painting for 600 / 500 KVA GE Set complete all as specified and directed .

All as per Item No. 35.00 but capacity of 320 KVA

All as per Item No. 35.00 but capacity of 250 KVA

All as per Item No. 35.00 but capacity of 160/125 KVA

All as per Item No. 35.00 but capacity of 62.5 / 63 KVA

All as per Item No. 35.00 but capacity of 20 KVA

M&L for preparation of old painted steel surfaces of 320 KVA DG Set including alternator, radiator support channels complete, connected equipments complete and painting with two coats of approved colour synthetic enamel paint complete all as specified and directed. Note:- 1. Painting should be done with existing colour codes and painting should apply with the help of spary gun using air compressor. 2. Quoted rate shall deemed to be included for preparation of old painted surface by twinkering and applying zinc chrome primer over twinkered/rusted portion all as directed.

All as per Item No. 41.00 but capacity of 250 KVA

All as per Item No. 41.00 but capacity of 160/125 KVA

All as per Item No. 41.00 but capacity of 62.5 / 63 KVA

All as per Item No. 41.00 but capacity of 20 KVA

Cleaning of diesel tank of any capacity carefully by draining out fuel in the tank including disconnection from fuel system, descaling the diesel tank with water pressure and removing the complete sludge deposited, drying the tank, repair to any leakage, cleaning and testing of fuel line upto Fuel Pump inlet all as specified and directed for the 600 / 500 KVA DG Set

All as per Item No. 46.00 but capacity of 320 KVA

All as per Item No. 46.00 but capacity of 250 KVA

All as per Item No. 46.00 but capacity of 160/125 KVA

All as per Item No. 46.00 but capacity of 62.5 / 63 KVA

All as per Item No. 46.00 but capacity of 20 KVA

M&L for fixing of View Glass with beading in canopy all as specified and directed by Engr-in-Charge of 600 / 500 KVA DG Set

All as per Item No. 52.00 but capacity of 320 KVA

All as per Item No. 52.00 but capacity of 250 KVA

All as per Item No. 52.00 but capacity of 160/125 KVA

All as per Item No. 52.00 but capacity of 62.5 / 63 KVA

All as per Item No. 52.00 but capacity of 20 KVA

M & L for Replacement of complete water hose pipe set including clips,nuts, bolts and washers etc of the 600 / 500 KVA DG Set all as specified and directed by Engr-in-Charge.

All as per Item No. 58.00 but capacity of 320 KVA

All as per Item No. 58.00 but capacity of 250 KVA

All as per Item No. 58.00 but capacity of 160/125 KVA

All as per Item No. 58.00 but capacity of 62.5 / 63 KVA

All as per Item No. 58.00 but capacity of 20 KVA

M & L for replacement of complete fuel and lub oil hose pipe set with clamp / clip etc of the 600 / 500 KVA DG sets:-

All as per Item No. 64.00 but capacity of 320 KVA

All as per Item No. 64.00 but capacity of 250 KVA

All as per Item No. 64.00 but capacity of 160/125 KVA

All as per Item No. 64.00 but capacity of 62.5 / 63 KVA

All as per Item No. 64.00 but capacity of 20 KVA

M&L for replacement of herness wiring complete all as specified and directed for 600 / 500 KVA DG sets:-

All as per Item No. 70.00 but capacity of 320 KVA

All as per Item No. 70.00 but capacity of 250 KVA

All as per Item No. 70.00 but capacity of 160/125 KVA

All as per Item No. 70.00 but capacity of 62.5 / 63 KVA

All as per Item No. 70.00 but capacity of 20 KVA

M&L for pump & injectors calibration of 600 / 500 KVA DG Set all as specified and directed by Engr-in-Charge.

All as per Item No. 76.00 but capacity of 320 KVA

All as per Item No. 76.00 but capacity of 250 KVA

All as per Item No. 76.00 but capacity of 160/125 KVA

All as per Item No. 76.00 but capacity of 62.5 / 63 KVA

All as per Item No. 76.00 but capacity of 20 KVA

M&L for PVC covered iron mesh at fresh air inlet to avoid entry of snakes , lizards etc. all as specified and dircted by Engr-in-Charge of 600 / 500 KVA DG Set.

All as per Item No. 82.00 but capacity of 320 KVA

All as per Item No. 82.00 but capacity of 250 KVA

All as per Item No. 82.00 but capacity of 160/125 KVA

All as per Item No. 82.00 but capacity of 62.5 / 63 KVA

All as per Item No. 82.00 but capacity of 20 KVA

M & L for replacement of battery lead set of 2 Nos 1.5 mtr long copper lead of 35 Sqmm size including GM terminals at one end and coper lug at other end all as directed.

M&L for repair and servicing of self starters including replacement / rewinding of armature, carbon brush set with holder, king pin holder, check nut, body screens, clutch plate assembly and solenoid switch etc all as specified and directed for 600 / 500 KVA DG set.

All as per Item No. 89.00 but capacity of 320 KVA

All as per Item No. 89.00 but capacity of 250 KVA

All as per Item No. 89.00 but capacity of 160/125 KVA

All as per Item No. 89.00 but capacity of 62.5 / 63 KVA

All as per Item No. 89.00 but capacity of 20 KVA

Supply and toping up of engine oil 15W40 or as per manufacturers recommendations for topping up or replacement. Make: Castrol/Servo/Valvoline

Supply and toping up of radiator coolents as per the recommendation of engine manufacturer all as specified and as directed by Engineer-in-Charge.

Disconnecting and removing existing unserviceable battery and S&F maintenance free battery 12V 90/100 AH with minimum 2 years warrenty all as specified and as directed by Engineer-in-Charge. Make: Exide / Amco / Amron

Disconnecting and removing existing unserviceable battery and S&F maintenance free battery 12V 180 AH with minimum 2 years warranty all as specified and as directed by Engineer-in-Charge. Make: Exide/ Amco/Amron

Checking complete wiring for AMF panel and identifying fault in the safety and control system wiring from AMF panel to engine control gadgets like HWT. LLOP, and shut down valve, dynamo self-starter etc for 160 to 320 KVA DG set engine and rectifying fault in the AMF system including replacement of EC-2 Relay,suitable capacity of contactor, burnt control wiring cable with thimbles and ferrules, blown out fuses for proper fuctioning and testing the DG set all as specified and as directed by Engineer-in-Charge.

All as per Item No. 99.00 but capcity of 20 to 125 KVA DG Set

All as per Item No. 99.00 but capcity of 500 to 600 KVA DG Set

S&F in repair AVR with functions to adjust generator output voltage, prevent voltage hunting, set under frequency roll off knee point, set generator droop to 5% at full load, match AVR input to accessory output, set the over excitation cut off level, set intial frequency related voltage dip, over-voltage protection cut off level, maximum short circuit current with sensing input voltage range 170 - 250 V AC max, 50 -60 HZ frequency with output max upto 120 V DC, continuous current 2.7A & transient 6A for 10 sec including necessary control wiring complete from alternator to AVR complete testing & commissioning for DG sets of capacity 20 KVA to 62.5 KVA

All as per Item No. 102.00 but capacity of 125 to 320 KVA DG Set

All as per Item No. 102.00 but capacity of 500 to 600 KVA DG Set

S&F in repair microprocessor based integrated power command controller for DG set monitoring and metering protection and control system with built in torque matched volts/Hz over load control preferably the gen set function including (i) Digital governing (ii) Digital voltage control (iii) Digital engine control (iv) Operator interface (v) Protection parametres i.e RPM, Battery Voltage, lub oil pressure failure, coolent temperature, running hour, high water temperature, high/low DC voltage, weak battery, over speed fan to crank , fail to start senser (vi) advanvce control function (vii) alternate protection shold be under voltage , over voltage, over current, under/over frequency, loss of sensing including necessary control wiring complete , testing & commissioning for DG sets of capacity 250 to 500 KVA

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 department all as specified and directed by Engineer-in-charge.

S & F Battery Charger suitable for charging of 12 V battries with 230 Volts

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