REPAIR_MAINTANANCE_SERVICING OF TRANSFORMERS_ DEHYDRATION WORKS_ PAINTING AND CERTAIN ALLIED REPAIR WORKS AT KATARIBAGH AND NAVAL BASE KOCHI

Amount

Excavation in trenches not exceeding 1.5M in depth and not exceeding 1.5M wide for laying UG cable and getting out in soft/loose soil complete all as specified and as directed.

Returning filling in soil including spreading, levelling , watering and well ramming in layers not exceeding 25 cm complete all as specified and as directed..

Removing excavated materials not exceeding 50 Mtr depositing where directed at a level not exceeding 1.5 mtr above the starting point complete all as specified and as directed..

M & L for River sand filling in trenches for cushioning of HT / LT cables punning after filling complete all as specified and as directed. Note: Punned thickness shall only be measured and paid

Supply and lay un-reinforced precast concrete cable cover, class HV , Type I as per IS -5820 with flat size 300 x 180 x 40 mm laid dry in trenches over under ground cables complete all as specified and as directed.

Supplying and lay un-reinforced precast concrete cable cover, class LV, type 1,as per IS -5820 with flat size 250 mm x 150 mm x 40 mm laid dry in trenches over under ground cables complete all as specified and as directed.

S&F GI pipe light grade of size 100mm dia with fittings under road crossing for protection of cable complete including taking down old item all as specified

S&F GI pipe light grade of size 80mm dia with all fittings laid in trenches or fixed walls etc complete including taking down old item all as specified

Cutting into existing bituminous carpet road/PCC hard standing to a depth of 30 CM for laying of pipes/UG cables and making good the disturbed surfaces to match with the existing.

Materials and labour for earthing complete with galvanised iron earth plate electrode 600 mm x 600 mm x 6 mm thick, buried directly and preferably vertically in ground, earth pit not less than 2.25 Mtr deep below ground level with top edge of the plate not less than 1.5 m below ground level connected with galvanised strip of size 32 x 6 mm by means of nuts, bolts, check nuts and washers made of galvanised iron or steel earthing lead to be protected by galvanised iron pipe 40 mm bore (medium grade) and other end connected to earthing test point or lightening arrestor or main controlling switch as directed including providing funnel with 20mm bore galvanised iron pipe (light grade), wire mesh, charcoal or coke and common salt in alternate layer of 15cm (compacted thickness) all round the earth electrode, concrete earth pit in PCC (1:3:6) type C-1 (with 20mm graded aggregate), 50mm thick precast RCC (1:2:4) cover slab (re-inforced with 8mm dia TMT bar @ 15 cm C/C both ways and suitable handle made of 10mm dia) including necessary earth work in excavation, returning filling and removal of surplus earth upto a distance not exceeding 50 m etc all as shown on electrical plate No. 3 of MES Schedule Part-I(2009) complete including testing on completion all as specified including taking down of old item and as directed by the Engr-in-Charge. NOTE :- (i) Cost of GI pipe light grade 40 mm shall deemed to be included in the quoted rate (ii) GI strip and GI pipe length of upto 7.5 RM shall deemed to be included in the quoted rate and over and above shall be measured and paid separately

Material and labour for earth continuity conductor or main earthing strip fixed to wall on batten or porcelain insulators or recess or chases or buried in ground or drawn in GI pipe 40 mm or fixed with poles or any other indicated situation for loop earthing etc as required using galvanised iron strip of size 32 X 6 mm complete all as directed. NOTE :- GI Pipe 40 mm shall be measured and paid separately under relevant item.

Supply and fixing , cable jointing kit for 11 KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm x 3 core including taking down old item, all as specified.

Supply and fixing , cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm x 3 core including taking down old item, all as specified.

Supply and fixing of cable jointing kit for 11 KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for XLPE armoured aluminium conductor cable of size 240 sqmm to 300 sqmm x 3 core including taking down old item, all as specified.

Supply and fixing , cable straight through jointing kit for 11 KV (Earthed) grade cable, heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm including taking down old item ,all as specified.

Supply and fixing , cable straight through jointing kit for 11 KV (Earthed) grade cable, heat shrink type joint complete with jointing material and accessories suitable for XLPE armoured aluminium conductor cable of size 240 sqmm to 400 sqmm x3 core including taking down old item ,all as specified.

Servicing of transformer any type ,11000 Volt / 433 Volts and 433 / 380 volt, step down/Step up, indoor/out door, type of capacity upto 250 KVA comprising following work services:- (a) Disconnection of cable termination of HT & LT ends. (b) Opening of top cover by removing nuts, bolts and all mounting accessories and conservator tanks for visual inspection. (c) checking of HT/LT insulators including internal inspection (d) Replacement of corroded nuts/bolts with double washers, burned lugs, etc by new one. (e) Servicing of tap changing gears by cleaning and polishing tapping contact points. (f) After removing U/s bushings, cleaning, polishing of bushings and studs of both HT/LT side by using soft cotton cloth including checking for cracking and refixing the same. (g) Refixing all cable terminals HV & LV sides and transformer top cover, conservator tank and other fitments in position. (h) Replacement of silica gel in breather. (j) Mechanical inspection and fixing of buchholz relay. (k) Connecting HT & LT side with existing incoming and outgoing cables including re-connection of earth strip/lead. (l) HT side cable connection shall be made with new HT tape & M Seal Monoplast as required at site. (m) All marshalling boxes to be cleaned from inside. (n) All the terminal connection of control and relay wiring to be checked and tighten. (o) Examine the rollers carefully includes greasing them properly.

All as per item No.17 here in above but of capacity 315 KVA to 500 KVA

All as per item No.17 here in above but of capacity 630 KVA to 1000 KVA

All as per item No.17 here in above but of capacity 1250 KVA to 1500 KVA

Note for Item No.17 to 20 : (i) New buchholz relay, New silica gel, New bushes, studs, etc required for replacement shall be measured and paid for separately as 'Supply only' and cost of taking down of all these materials shall deemed to be included in the above quoted rate. (ii) The cost of replacement of unserviceable nut, bolt with double washers, HT / LT tape used, M-Seal, Monoplast, cable end socket, etc shall deemed to be included in the quoted rate. (iii) For the inspection of internal defect of transformer, the contractor shall provide proper lifting arrangements like tripod, chain and pulley, T&P, etc and the rent shall deemed to be included in the quoted rate. (iv) Contractor shall isolate the transformer from the supply and do earth the transformer properly while servicing the transformer (v) The entire service included Transformer with or without OLTC

De-hydration/ filtration of transformer oil by employing on line filtration plant to achieve di-electric strength not less than minimum 45 KV including following work services :- (a) Removal of all suspended particles such as dust, rust, scales, collided Carbone oxidation sludge, etc upto < 1 micron. (b) De-hydration of transformer oil under vacuum. (c) Circulation of heated oil and filling of treated oil in transformer tank. (d) Top up the transformer oil upto the level. NOTE : (i) Contractor shall use the vehicle mounted filtration plant with new suitable size heavy duty hose pipe. (ii) The transformer oil required for replacing/top up shall be measured and paid separately as "Supply only" (iii) Conducting field testing of di-electric strength of the transformer oil before and after filtration (iv) Checking the megger/earth resistance values with battery operated megger of 5 KV

Rectifying and arresting the oil leakage of transformer of any capacity, replacing the following components of the transformer such as gaskets, "O" rings, etc. Rectify the leaks in a variety of areas such as radiator fins, flanges, circuit breakers, valves, fastener assemblies, Oil leakage through pin hole / crack joint , drain valve / radiator valve , Oil leakages through Gasket joints. Applying putty/M-Seal Monoplast where ever necessary. NOTE : (i) Cost of all type of gasket, "O" rings, putty/M-Seal Monoplast, lugs, nut bolt, double washers, etc shall deemed to be included in the quoted rate.

Supply only Transformer oil having die electric strength not less than 45KV

Supply only silica gel of superior quality for air breather of transformer installed at Naval Base, Kochi

Supply only breathing assy of Transformer with new silica gel 250 gm as per existing make and type

Supply only breathing assy of Transformer with new silica gel 500 gm as per existing make and type

Supply only breathing assy of Transformer with new silica gel 1000 gm as per existing make and type

Supply only brass terminal stud with nuts, check nut, oil seal and washer for HT side of transformer of any make as per sample up to 400 KVA transformer

Supply only brass terminal stud with nuts, check nut, oil seal and washer for HT side of transformer of any make as per sample from 500 KVA to 1000 KVA transformer

Supply only brass terminal stud with nuts, check nut, oil seal and washer for HT side of transformer of any make as per sample from 1250 KVA to 1500 KVA transformer

Supply only brass terminal stud with nuts, check nut, oil seal and washer for LT side of transformer of any make as per sample up to 400 KVA transformer

Supply only brass terminal stud with nuts, check nut, oil seal and washer for LT side of transformer of any make as per sample from 500 KVA to 1000 KVA transformer

Supply only brass terminal stud with nuts, check nut, oil seal and washer for LT side of transformer of any make as per sample from 1250 KVA to 1500 KVA transformer

Supply only bushing of HT side as per existing size/Model of the capacity up to 400 KVA transformer.

Supply only bushing of HT side as per existing size/Model of the capacity 500 KVA to 1000 KVA transformer.

Supply only bushing of HT side as per existing size/Model of the capacity 1250 KVA to 1500 KVA transformer.

Supply only bushing of LT side as per existing size/Model of the capacity up to 400 KVA transformer.

Supply only bushing of LT side as per existing size/Model of the capacity 500 KVA to 1000 KVA transformer.

Supply only bushing of LT side as per existing size/Model of the capacity 1250 KVA to 1500 KVA transformer.

Supply only buchholz relay as per existing size/Model suitable for transformer up to 1500 KVA transformer.

Supply and fixing transformer oil temperature gauge, range shall be 0 to 120 degree C as per existing type and model including taking down old one.

Supply and fixing GM gate valve 15 mm dia, ISI Marked suitable for oil inlet/outlet valves of transformer including taking down old one

Supply and fixing GM gate valve 20 mm dia, ISI Marked suitable for oil inlet/outlet valves of transformer including taking down old one

Supply and fixing GM gate valve 25 mm dia, ISI Marked suitable for oil inlet/outlet valves of transformer including taking down old one

Material and labour for disconnecting transformer supply both HT and LT side, transporting to local workshop, opening transformer, removing the core and winding assembly, taking out the HT and LT burnt winding, re-winding with super enamelled copper winding wire of same gauge and turn varnishing, drying in oven, Clean the sludge of transformer oil and ensure that ducts are not blocked, Clamp the windings firmly without any movement. Adjust the vertical tie bars to tighten loose windings or spacers. Properly tight the special coil adjustment bolt, if provided, Check the proper operation of tap changing switch, Tight all connections and fix all fitments in position. Conduct insulation resistance test, Clean the bushing & stud and examine for cracks and chips, replace if required. De-hydration/filtration of oil for di-electric strength not less than 45 KV, topping up with new oil, checking HT/LT bush for desired IR value, re-assemble, transporting back to install the same with system, testing with NO LOAD & LOAD complete all as directed for any capacity. NOTE : (i) De-hydration and new oil for topping up will be measured and paid separately (ii) The crane and vehicle shall be provided by the contractor at his own risk and cost shall deemed to be included in the quoted rate.

Shifting of standby trolley mounted transformer / DG Set or any other transformer of capacity up to 750 KVA including its HT / LT cable from one location to another location and back to original site inside the Naval Base and Kataribagh by using toeing vehicle and crane if necessary. Dismantling the HT/LT connection of the existing faulty transformer, connecting the HT / LT cable of the trolley mounted transformer with the existing load, connecting the transformer with body and neutral earth with existing earth lead and testing with load. NOTE : (i) The works includes the removal and refixing of all connection, cable, etc of both transformers. (ii) Contractor shall shift and connect the trolley mounted transformer immediately within four hrs when AGE E&M / JE E&M inform through mobile message (iii) If contractor fails to shift the trolley mounted transformer within four hrs, a penalty of Rs.3000.00 per hour after four hour shall be imposed. (iv) Rent of toeing vehicle, labour used, tools used shall deemed to be included in the quoted rate. (v) Contractor shall take care of transformer while shifting, any damage found while shifting will be rectify by the contractor at his own risk.

Supply and laying in trenches, or fixing on walls or passing through cable duct / pipe XLPE insulated, screened, PVC bedded galvanised steel strip or wire armoured electric power cables (heavy-duty) with aluminium conductor, 11000 volts, grade having cross sectional area 3 core 185 sqmm including taking down old item, all as specified.

Supply and laying in trenches, or fixing on walls or passing through cable duct / pipe XLPE insulated, screened, PVC bedded galvanised steel strip or wire armoured electric power cables (heavy-duty) with aluminium conductor, 11000 volts, grade having cross sectional area 3 core 240 sqmm including taking down old item, all as specified.

Supply and laying in trenches, or fixing on walls or passing through cable duct / pipe XLPE insulated, screened, PVC bedded galvanised steel strip or wire armoured electric power cables (heavy duty) with aluminium conductor, 11000 volts, grade having cross sectional area 3 core 300 sqmm including taking down old item, all as specified.

Supply and laying in trenches, or fixing on walls or passing through cable duct / pipe XLPE insulated, screened, PVC bedded galvanised steel strip or wire armoured electric power cables (heavy duty) with aluminium conductor, 1100 volts, grade having cross sectional area 3.5 core 300 sqmm including necessary thimble, gland, etc and taking down old item, all as specified.

Supply and laying in trenches, or fixing on walls or passing through cable duct / pipe XLPE insulated, screened, PVC bedded galvanised steel strip or wire armoured electric power cables (heavy duty) with aluminium conductor, 1100 volts, grade having cross sectional area 3.5 core 240 sqmm including necessary thimble, gland, etc and taking down old item, all as specified.

Supply and laying in trenches, or fixing on walls or passing through cable duct / pipe XLPE insulated, screened, PVC bedded galvanised steel strip or wire armoured electric power cables (heavy duty) with aluminium conductor, 1100 volts, grade having cross sectional area 3.5 core 185 sqmm including necessary thimble, gland, etc and taking down old item, all as specified.

Supply and laying in trenches, or fixing on walls or passing through cable duct / pipe XLPE insulated, screened, PVC bedded galvanised steel strip or wire armoured electric power cables (heavy duty) with aluminium conductor, 1100 volts, grade having cross sectional area 3.5 core 150 sqmm including necessary thimble, gland, etc and taking down old item, all as specified.

Supply and laying in trenches, or fixing on walls or passing through cable duct / pipe XLPE insulated, screened, PVC bedded galvanised steel strip or wire armoured electric power cables (heavy-duty) with aluminium conductor, 1100 volts, grade having cross sectional area 3.5 core 120 sqmm including necessary thimble, gland, etc and taking down old item, all as specified.

Supply and fixing , cable straight through jointing kit for 1.1 KV (Earthed) grade cable, heat shrink type joint complete with jointing material and accessories suitable for 3.5 core XLPE armoured aluminium conductor cable of size 400 sqmm including taking down old item ,all as specified.

Supply and fixing , cable straight through jointing kit for 1.1 KV (Earthed) grade cable, heat shrink type joint complete with jointing material and accessories suitable for 3.5 core XLPE armoured aluminium conductor cable of size 185 sqmm to 300 sqmm including taking down old item ,all as specified.

Supply and fixing , cable straight through jointing kit for 1.1 KV (Earthed) grade cable, heat shrink type joint complete with jointing material and accessories suitable for 3.5 core XLPE armoured aluminium conductor cable of size 70 sqmm to 150 sqmm including taking down old item ,all as specified.

Material and labour for painting of transformers capacity up to 250 KVA with or without OLTC including HT/LT side marshalling box with one coat of synthetic enamel paint by using spray painting method after and including cleaning of existing surface of all dirt and greasy materials along with marking of SM/MES Nos with sticker letters n exc 2 cm height at appropriate places complete after isolating the transformer from the electric supply and to be earthed all as specified and as directed by the Engr-in-Charge. Note: (i) The superficial area for the purpose of painting shall be considered approx. 2 Sqm. (ii) Contractor's rep shall be present during the entire time of painting. (iii) The safety of painter/electrician/supervisor/engineer working with transformer shall be at contractors risk. (iv) The rent of the air compressor, tools, etc shall deemed to be included in the quoted rate. (v) Marking of SM / MES No if any shall be deemed with quoted rate.

All as per item No.58 here in above but of capacity 315 KVA to 500 KVA

All as per item No.58 here in above but of capacity 630 KVA to 1500 KVA

Material and labour for hiring, transporting and finding the HT 11 KV UG cable fault locator in any location inside Naval Base and Kataribagh area for any size of cable by using portable cable fault locator and marking the exact location all as directed by Engr-in-Charge.

M&L 40 mm bore GI tubes light grade galvanised, with all fittings laid in trenches or walls or for passing earth strip, etc , complete including taking down old item all as specified

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