81396 REPAIR/ MAINTENANCE OF AC PLANT OF TECHNICAL AREA AT TIRUNELVELI UNDER GE TIRUNELVELI

Amount

SCHEDULE 'A' PART-I [ A/C WORKS]

M&L for dismantling of electric driven horizontal induction motor of capacity upto 5.0 HP of any type and make, by engaging sufficient man power and suitable T&P to ensure safety of pump-motor as well as working persons including disconnecting of electric connections, dismantling of motor, taking out the burnt windings, cleaning and washing of slots and rewinding the same with copper winding wire of existing gauge and quantity (as per original manufacturer design) including replacement of all damaged parts i. e. bearings, bush, thrust plate, thrust bearing, connector plate, insulating materials such as insulating sheets insulating paper (Class "F"), sealing compounds etc and reassembling the motor after varnishing, heating/drying, greasing of moving parts etc and reinstallation of the motor in original location, checking the alignment, making proper electric connection, testing for smooth operation, complete all as directed. Note : (i) The cost of winding wire and all replaced defective parts are deemed to be included in quoted rates and no extra cost shall be paid to the contractor in this effect. (ii) The cost of transportation (to and fro) and other necessary equipment shall be arranged/brought by contractor to complete the job at site or at repair shop and no extra cost shall be paid to the contractor in this effect.

All as per srl item no 02 here-in-above but for 7.5 HP capacity.

All as per srl item no 02 here-in-above but for 10.0 HP capacity.

All as per srl item no 02 here-in-above but for 12.5 HP capacity.

Servicing/overhauling of centrifugal pump set by dismantling completely and replacing unserviceable ball bearing, shaft sleeve, gland nack ring gland rope,nut and bolts, impellers etc. assembling back the complete pump and fixing alignment to the original position and coupling with pump and necessary alignment etc with Two coat enameled paint including scraping complete and written MES/SM, testing and commissioning complete all as specified and directed Note: (i) Spares shall be included in the quoted unit rate. (ii) Painting and writting shall be included in the quoted unit rate. (a) Maintenance schedule :- (i) Checking for looseness of all the foundation and coupling nuts/bolts and rectification. (ii) Checking of leakage in gland packing, shifting base, bushes sluice valves, gate valves etc and rectification. (iii) Checking for any undue noise of motor pump and rectification. (iv) Checking for proper aligment and rectification. (v) Checking for proper lubrication in bearing and lubricating. (vi) Checking all electrical panel using for pumping for cleanliness and rectification for any looseness burnt redressing etc.

Supply and fixing in replacement, of gun metal gate valve of 20 mm dia bore size (IS -778) Class 1 with iron wheel head, screwed inside, non-rising stem, complete all as directed. Make - Kirlosker / Sant Valve / Zoloto / Kartar Valves / Leader

All as per srl item no 9 here-in-above but of 32 mm bore size complete all as directed.

All as per srl item no 9 here-in-above but of 50 mm bore size complete all as directed.

All as per srl item no 9 here-in-above but of 50 mm bore size complete all as directed.

M&L for MS work, fabricated from MS channel, angle iron, flat iron of any size with and incl all kind of machine works i.e. welding, cutting, bending, drilling, grinding, polishing etc with and incl all fixing accessories i.e. nuts, bolts, washers, MS fasteners etc as required and two coats of synthetic enamel paint over a coat of red oxide paint, fixing the same on any level of the building, complete all as directed.

Supply and fixing in replacement of pre-filter, cleanable type, made of non woven synthetic media with GI frame, Box/Bag/cassette type, having efficiency 90% down to 10 microns, of size 610X300mm(2x1 feet), complete all as directed by Engr-in-Charge.

All as per item No 14 here-in-above but Size- 610x610mm(2x2 feet) complete all as directed.

All as per item No 14 here-in-above but Size- 300x300mm(1x1 feet) complete all as directed.

Supply and fixing in replacement of MICRO-VEE 5 micrown fine-filter, cleanable type, made of non woven synthetic media with GI frame, Box/Bag type, having efficiency 97% down to 5 microns, of existing shape and size 610x300 mm(2x1 feet), complete all as directed.

All as per item No 17 here-in-above but Size- 610x610mm(2x2 feet) complete all as directed.

All as per item No 17 here-in-above but Size- 300x300mm(1x1 feet) complete all as directed.

Supply and fixing in replacement of pre-filter, cleanable type, made of non woven synthetic media with GI frame, Box/Bag/cassette type, having efficiency 90% down to 10 microns, of suitable size for Air ventilation blower 20000 CFM , complete all as directed by Engr-in-Charge.

Supply & Lay MS pipes heavy grade with all fittings laid in floors or fixed to walls and ceilings etc. of size 32 mm complete all as specified and directed by Engr-in-Charge.

Supply & Lay MS pipes heavy grade with all fittings laid in floors or fixed to walls and ceilings etc. of size 40 mm complete all as specified and directed by Engr-in-Charge.

Supply & Lay MS pipes heavy grade with all fittings laid in floors or fixed to walls and ceilings etc. of size 65 mm complete all as specified and directed by Engr-in-Charge.

Supply & Lay MS pipes heavy grade with all fittings laid in floors or fixed to walls and ceilings etc. of size 125 mm complete all as specified and directed by Engr-in-Charge.

Supply & Lay MS pipes heavy grade with all fittings laid in floors or fixed to walls and ceilings etc. of size 150 mm complete all as specified and directed by Engr-in-Charge.

M&L for Insulation of M S pipe with PUF slab 32 mm thick with and including applying bituminous compound and GI cladding with 26 guage GI sheet complete of size 32 mm dia all as directed

All per item No: 26 but of 40 mm dia complete all as directed.

All per item No: 26 but of 65 mm dia complete all as directed.

Supply, and fixing in replacement of cast Iron butterfly valve, ISI marked, PN - 1.6 pressure grade, having Nitrile/EPDM rubber lining, SS stem,CS/SS disc. Lever operated type, of size 50 mm dia bore with hand wheel including all jointing material i.e, nut, bolt, washer, packing material etc, duly insulated and taking out of old unserviceable valve, complete all as directed.

All as per item No.29 but bore size of 65 mm complete all as directed.

All as per item No.29 but bore size of 80 mm complete all as directed.

All as per item No.29 but bore size of 100 mm complete all as directed.

All as per item No.29 but bore size of 125 mm complete all as directed.

Supply and fixing non return valve PN- 1.6 IS 5312 Part -I. 125 mm dia both ends flanged heavy duty including packing materials, nut bolts washer etc and testing complete including taking out of old U/S non return valve all as directed.

All as per item No.34 but bore size of 100 mm complete all as directed.

All as per item No.34 but bore size of 65 mm complete all as directed.

Supply and fix V belt of size SPA 2010 suitable for AHU 10000 CFM as per sample, complete all as specifiedand directed by Engr-in-Charge.

Supply and fix V belt of size SPA 2360 suitable for 9000CFM as per sample, complete all as specifiedand directed by Engr-in-Charge.

Supply and fix V belt of size A98 2520 suitable for ventilation blower as per sample, complete all as specifiedand directed by Engr-in-Charge.

Supply and fix V belt of size SPA 2900 suitable for AHU 12000 CFM as per sample, complete all as specifiedand directed by Engr-in-Charge.

Material and Labour for dismantling of blower shaft of AHU of 12000/10000/9000 CFM capacity, by removing the belt and pulley, blower drum, and reconditioning the shaft and filling of metal at decayed portions including all welding, turning, polishing and other machine works required to make the shaft of required shape and size, as original, balancing the shaft and refitting in AHU including re-assembling the blower, pulley etc with and including replacement of new bearing of existing size, testing the AHU for satisfactory operation, complete all as directed.

M& L in replacment superior quality canvas cloth/Nylon material cloth with Zip, Max cross sectional area 1 sqm having depth not more than 50 cm with GI frame suitable to connect both AHU and duct including taking down of old material all as per directed.

Supply and fixing in replacement of temperature gauge bottom connected, direct mounted type, of temperature, including necessary welding complete all as directed.

Supply and fix in repalcement of Pressure gauge dial type with siphon assembly including necessary arrangement and welding cutting all as per directed.

M & L Cleaning of inside surface of supply Return/Exhaust Ducts of HVAC system by using high power vaccum air compressor air hammer , special nozzle ,air sweep with other required accessories giving /showing inspection of dust before and after cleaning of duct inspection all as directed by Engr-in -Charge.

Material and Labour for detatching all water and electric connections of AHU 9000 CFM, double skin type, and cleaning coils internal and external chemical cleaning with circulation pump, with the help of chemical to remove scales and chokes on tubes, re-assembling all the dismantled components to its original position and other packing material etc, with and including testing, commissioning of Air handling Unit for satisfactory operation, complete all as directed by Engr-in-Charge.

Material and Labour for detatching all water and electric connections of AHU 10000 CFM, double skin type, and cleaning coils internal and external chemical cleaning with circulation pump, with the help of chemical to remove scales and chokes on tubes, re-assembling all the dismantled components to its original position and other packing material etc, with and including testing, commissioning of Air handling Unit for satisfactory operation, complete all as directed by Engr-in-Charge.

Material and Labour for detatching all water and electric connections of AHU 12000 CFM, double skin type, and cleaning coils internal and external chemical cleaning with circulation pump, with the help of chemical to remove scales and chokes on tubes, re-assembling all the dismantled components to its original position and other packing material etc, with and including testing, commissioning of Air handling Unit for satisfactory operation, complete all as directed by Engr-in-Charge.

Supply and charging lubricating oil for scroll type compressor complete all as specified and directed by Engr-in-Charge.

Supply and charging with refrigerant R407c, complete all as specified and directed by Engr-in-Charge.

M & L in replacment of unserviceable flanged Bellow PN 16, 65 mm, EPDM rubber type, as per sample complete all as specified and directed by Engr-in-Charge.

M & L in replacment of unserviceable flanged Bellow PN 16, 100 mm, EPDM rubber type, as per sample complete all as specified and directed by Engr-in-Charge.

M & L in replacment of unserviceable flanged Bellow PN 16, 125 mm, EPDM rubber type, as per sample complete all as specified and directed by Engr-in-Charge.

Supply and fix waterflow switch to indicate the reading of water flow rate of chiller as per sample complete all as specified and directed by Engr-in-Charge

Supply and fix waterflow meter to indicate the reading of water flow of chiller as per sample complete all as specified and directed by Engr-in-Charge

M & L for repair of Electric motor starter for 12.5 HP motor with replacement of 3 pole power contactor MNX type 25 Amp-03Nos and Relay of suitable capacity, S/D timer including wiring complete all as specified and directed by Engr-in-Charge

M & L for repair of Electric motor starter for 10 HP motor with replacement of 3 pole power contactor MNX type 25 Amp-03Nos and Relay of suitable capacity, including wiring complete all as specified and directed by Engr-in-Charge

M & L for repair of Electric motor starter for 7.5/5 HP motor with replacement of 3 pole power contactor MNX type 22 Amp-03Nos and Relay of suitable capacity, including wiring complete all as specified and directed by Engr-in-Charge

Material and labour for fixing the new moulded case circuit breakers in the existing feeder pillar box with new bolts and nuts including connecting the incoming and out going cables by using suitable cable glands and jumpers/cable with the bus bar. Taking down burnt out MCCB, and supply and fix new moulded case circuit breakers of following capacity in the existing feeder Pillar box with new bolts complete as specified and directed.

(a) MCCB 3 pole 630 Amps 35 KA Make L&T Cat No-CM93005OOOOX1 or equivalent as mentioned in PS

(b) MCCB 3 pole 250 Amps 35 KA. Make L&T Cat No-CM92054OOOOX1 or equivalent as mentioned in PS

(c) MCCB 3 pole 250 Amps 25 KA. Make L&T Cat No-CM90638OOPO or equivalent as mentioned in PS

(d) MCCB 3 pole 63 Amps 10 KA. Make L&T Cat No-EM90983OOHO or equivalent as mentioned in PS

Material and labour for fixing the new MCB in the existing feeder pillar box including connecting the incoming and out going cables by using suitable cable glands and jumpers/cable with the bus bar. Taking down burnt out MCB, and supply and fix new MCB of following capacity in the existing feeder Pillar box complete as specified and directed.

(a) MCB TP, 63 Amp, 10 KA, 'C' Series Make L&T Cat No-BB30630C or equivalent as mentioned in PS

(b) MCB TP, 32 Amp, 10 KA, 'C' Series Make L&T Cat No-BB30320C or equivalent as mentioned in PS

(c) MCB TP, 16 Amp, 10 KA, 'C' Series Make L&T Cat No-BB30160C or equivalent as mentioned in PS

(d) MCB SP, 6-32 Amp, 10 KA, 'C' Series Make L&T or equivalent as mentioned in PS

M&L for comprehensive Annaual maintenance for water cooled chiller plant, model No-RCU G80WHYZ-E(3Nos) for preventive and breake down maintenance with following of scope for the 11 month with the following works to be carried out:- (a) Studying the daily logbook maintained by the customer to understand any abnormal running condition recorded since last visit of the technician. In case if any abnormal conditions recorded, analysing the condition & taking corrective actions. (b) Cleaning the body of the equipment to remove the dust, dirt etc. on the equipment. (c) Water Service of condenser Coil Twice in Yearly. Checking the Oil level into the system & if required topping up. (d) Checking the refrigerant pipe joint with soap solution for any minor leakage in the system. (e) Checking & tightening of all bolts & nuts. (f) Checking & tightening all electrical connections of control panel. (g) Checking & tightening all electrical connections of Compressors. (h) Checking the Chillers inlet & outlet temperatures and pressures. Based on the readings, if required, make necessary correction in adjustment. (j) Checking the suction / discharge pressure of compressor to study any abnormal running conditions & rectifying the same if noticed.

ITEM NO.61 Cont........ (k) Checking voltage & current to studying / detect any abnormal running conditions. (l) Checking voltage imbalance between phases. (m) Checking the Loading-unloading solenoid valves. (n) Checking the set parameters of pressure switches. (o) Checking the condition of thermostat & thermistor and if need be replace. (p) Checking the condition of overload relays and if need be replace. (q) Inspect entire system for any unusual conditions such as noise, vibration, etc. (r) Check the system operating pressure and temperatures to ensure proper operating conditions. (s) Check chilled water flow/condenser water flow by checking pressure drop across the chiller. (t) Compare the chilled water temperature at full load with the chilled water temperature control. (u) Inspect all operating control and sequence of operation. (v) Review daily operating log maintained by Customers operating personnel and instruct operating engineer as required. (w) Compressor Motor Insulation Checks. (y) Cleaning of conductor once in a six month period for better performance & chiller unit rate are deemed to be included in quoted rate. (z) Service Engneer shall visit the plant every month and check the functioning of the plant, to avoid breakdowns all as directed. (AA) The above work shall be carried out through OEM or authorised agency of OEM only

Supply, laying & testing cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty)with stranded aluminium conductor, 1100 volts grade of 25sqmm 4core complete all as specified and directed by Engr-in-Charge.

Excavation in trenches not exc. 1.5 m wide and not exc.1.5 m deep for laying of cable, pipe and for erecting of steel tubular swaged pole etc, and getting out in hard/dense soil all as directed by Engineer-in-Charge.

Returning, filling in including spreading, levelling, watering and well ramming in layers not exc 25 cm all as directed by Engineer-in-Charge.

Removing excavated material not exc 50 mtrs and depositing where directed at a level not exceeding 1.5 mtr above the starting points in soil all as directed by Engineer-in-Charge.

Supply, spreading and compacting of approved riddled earth sand in cable ducts / trenches for cable cushion on both top and bottom of cable, including ramming as specified and directed by Engineer-in-Charge. (Note :- Punned thickness only will be measured)

Supply and lay burnt bricks for cable protection of sub class 'B' standard size in trenches all as specified.

Material and Labour for dismantling of blower shaft of ventilation blower of up to 20000 CFM capacity, by removing the belt and pulley, blower drum, and re-mentling the shaft and filling of metal at decayed portions including all welding, turning, polishing and other machine works required to make the shaft of required shape and size, as original, balancing the shaft and refitting in ventilation blower including re-assembling the blower, pulley etc with and including replacement of new bearing of existing size, testing the ventilation blower for satisfactory operation, complete all as directed.

M&L for applying two coat synthetic enamelled paint as desired colour over a coat of red oxide primer on steel/iron surfaces of pipes after preparing surface with help of emery paper etc removing rust, dust and old paints and making surfaces smooth for achieving better grip between surface and primer all as specified.

M&L for applying one coat of aluminium paint on steel/iron cable trays, Aquastic protection surfaces , aluminium pipe insulations etc after preparing surface with help of emery paper etc removing rust, dust and old paints and making surfaces smooth for achieving better grip between surface and primer all as specified.

Supply and fixing in replacement, of Air Vent valve, 20 mm dia ISI marked with and incl all fixing accessories, complete all as directed.

Supply and fixing in replacement of cast Iron 'Y' Strainer, ISI marked, PN - 16 pressure grade, of size 125 mm dia bore including all jointing material i.e, nut, bolt, washer, packing material etc, duly insulated and taking out of old unserviceable valve, complete all as directed by Engr-in-Charge.

M & L for checking and taking down Old unserviceable compressor of 1.5 TR AC and supply and fix new compressor including charging refrigerant gas R22/R134 A complete all as specified and directed by Engr-in-Charge.

M & L for checking and taking down Old unserviceable PCB card of 1.5 TR AC and supply and fix new PCB Card complete all as specified and directed by Engr-in-Charge.

M & L for checking Indoor/Outdoor unit, cleaning coil, lubricate fan motors, checking and cleaning drain connection and air filter, check and repair minor electrical fault including minor parts i.e. starting capacitor, running capacitor, relays, blower motor, fins motor, OLP etc. for 1.5 TR AC complete up to satisfaction and as specified and directed by Engr-in-Charge.

M & L for checking and taking down Old unserviceable compressor of 3.7 TR Cassette type and supply and fix new compressor including charging refrigerant gas R22/R134 A complete all as specified and directed by Engr-in-Charge.

M & L for checking and taking down Old unserviceable PCB card of 3.7 TR and supply and fix new PCB Card complete all as specified and directed by Engr-in-Charge.

Testing of water samples as per paameters givn below in order to diagnose the water quality for AC Chilled line and Condensed water system. (a) Ph Value (b) Electrical conductivity (c) Chlorine (d) Sulfur acid ion (e) Total Hardness (f) Silica (g) Reference quantity Total Iron (h) Total Copper (j) Sulphur Ion (k) Ammonium Ion (m) Remaining Chlorine (n) Floating carbonic Acid (p) Stability Index

M & L for checking Indoor/Outdoor unit, cleaning coil, lubricate fan motors, checking and cleaning drain connection and air filter, check and repair minor electrical fault including minor parts i.e. starting capacitor, running capacitor, relays, blower motor, fins motor, OLP etc. for 3.7 TR Cassette type AC complete up to satisfaction and as specified and directed by Engr-in-Charge.

AISWARYA ENTERPRISES

sri manikandan enterprises