REPAIR AND MAINTENANCE OF EXTERNAL ELECTRIC SUPPLY INSTALLATIONS, TRANSFORMER, VCB, HT/LT CABLES, STREET LIGHTS AND EXTERNAL WATER SUPPLY INSTALLATION, GI/CI PIPE LINES, PUMPS, ELECTRIC MOTORS AND ALLIED ACCESSORIES INSTALLED AT INS AND NAE PBR

Amount

Supply and laying Cast iron pipes with spigot & socketed joints centrifugally cast class LA complete in trenches including cutting, screwing for making forged bends on piping as required at site including taking down the existing pipe line with fitting of following sizes:- (CI fittings will be measured and paid separately).

(a) 150 mm dia

(b) 100 mm dia

(c ) 80 mm dia

M & L for CI fitting such as bend, tee pipes, collars, flange of any size from 80mm to 150mm including spun yarn all as specified and directed.

M & L for run lead joint in spigot and socketted pipe of size 150mm including spun yarn all as specified and directed.

M & L for run lead joint in spigot and socketted pipe of size 100mm including spun yarn all as specified and directed.

M & L for run lead joint in spigot and socketted pipe of size 80mm including spun yarn all as specified and directed.

M & L for cast iron sluice valve of pressure class PN-1 type flanged and drilled at both ends having gun metal spindle and rings including wheel for operating all as specified including two numbers flanged socket and jointing materials such as bolts, nuts, washers, rubbers/ fibre board gasket including taking down old unserviceable valve from pipe line complete all as specified and directed by Engr-in-charge.

(a) 150 mm dia

(b) 100 mm dia

(c ) 80 mm dia

S & F foot valves, releasing flip type with rubber gasket including necessary fittings, fixtures and arrangements as directed at site for the following dia of bore.

(a) 100 mm dia

(b) 80 mm dia

(c ) 50 mm dia

Supply and fixing gunmetal gate valve screwed down high pressure with iron wheel head/ long shank and cup butterfly type screwed both ends for iron pipe including taking out unserviceable valve for the following sizes:-

(a) 50 mm dia

(b) 40 mm dia

(c) 25 mm dia

(d) 20 mm dia

(e) 15 mm dia

Supply and laying galvanised steel water tubing medium grade ISI marked screwed socketed joints complete with all tube fitting such as bends, elbow, tees, short pieces, connectors, back nuts, diminishing pieces, caps, plugs and unions, etc and fixing complete with clips, wall hooks, wooden plugs, laying in trenches, cutting, screwing and waste as required at site including taking down the existing pipe line with fitting of following sizes:-

(a) 80 mm dia

(b) 50 mm dia

(c) 40 mm dia

(d) 25 mm dia

(e) 20 mm dia

(f) 15 mm dia

Supply and fix PP-R polypropylene random copolymer concealed pipes SDR 7.4 (PN 16) UV stabilised and antimicrobial fusion welded having thermal stability for hot and cold water supply including all PP-R plain and brass threaded polypropylene random fittings fixed complete to wall, ceiling or in floors etc including necessary fittings, fixtures and fixing material including taking out unserviceable pipe complete all as specified and directed of following sizes (outer dia):-

(a) 16 mm dia

(b) 20 mm dia

(c) 25 mm dia

(d) 40 mm dia

(e) 50 mm dia

Supply and fixing PP-R Gate valves (brass insert) as per requirementof the site including taking out unserviceable valve for the following sizes:-

(a) 50 mm dia

(b) 40 mm dia

(c) 25 mm dia

(d) 20 mm dia

(e) 16 mm dia

Supply and fixing PP-R Brass valves (brass insert) as per requirementof the site including taking out unserviceable valve for the following sizes:-

(a) 40 mm dia

(b) 25 mm dia

(c) 20 mm dia

Excavation in trenches n.exe. 1.5 mtr in depth for laying of electric Cables & Pipe lines and getting out in soft/loose soil complete all as specified.

Returning filling in including spreading levelling,watering,and well ramming in layers not exc.25 cm in any type of soil complete all as specified.

Removing exavated materials not exc 50 mtr and depositing where directed at a level not execeeding 1.5 mtr above the starting point complete all as specified.

S&F water pressure gauge with black steel case, copper alloy wetted parts, snap-in- acrylic window with white plastic dial and plastic pointer having 0-20 kg/cm2 pressure range fixed in repair / replacement complete all as specified & directed. Make-Cummins/Kirloskar/WIKA.

S&F water pressure gauge with black steel case, copper alloy wetted parts, snap-in- acrylic window with white plastic dial and plastic pointer having 0-14 kg/cm2 pressure range fixed in repair / replacement complete all as specified & directed Make-Cummins/Kirloskar/WIKA.

M&L for Construction of valve chambers 1200 mmx1200mmx900 mm with 15 cm thick solid concrete block masonary using casted blocks, built in cement and sand mortar 1:4,15 mm thick plaster to internal surface and external surface up to 15 cm below ground level and top of floor in CM 1:4 finished even and smooth without using extra cement 15 mm thick,MS sheet cover including 40x40x3 mm MS angle frame embedded in 150 mm thick PCC 1:2:4 type B-1,with 25x6 mm flat iron hold fast,handles,hinges with locking arrangments, applying one coat of red oxide primer and two coat of synthetic enamel paint to all steel surface and earth work in type of soil including demolition of existing damaged valve chambers & disposal of surplus soil to a distance n.exc.50 m.

Material & Labour for cross arms, bracings, supports, clamps, angle iron, flats and back plates febricated from MS structural steel sections including nuts, bolts and washers of suitable sizes including welding, bending (cold or hot), drilling holes for bolts in any shape or size as indicated or directed and inclusive of two coats of aluminum paint over one coat of red oxide primer, complete all as directed.

M & L for writing letters or figures (Block, Roman, Italic or Indian) n exc. 30 cm high with synthetic enamel paint as per colour scheme all as specified.

Supply and fixing Mechanical joint including nuts, bolts, washers and 03 Nos, rubber ring of the following sizes (long collar type). (a) 80 mm bore

(b) 100 mm bore

(c) 150 mm bore

(d) 200 mm bore

Supply and fixing Mild Steel Clamp including nuts, bolts, washers 04 Nos with rubber bushing of the following sizes. (a) 80 mm bore

(b) 100 mm bore

(c) 150 mm bore

(d) 200 mm bore

Dismantling Taking Out and refixing 20 HP, 415 Volts, 3 Phase Submersible pump set / Centrifugal pump set / Sewage Pump set with pump foundation strip, opening and cutting of burnt winding wire, from starter assy cleaning with petrol, rewinding motar with superior quality winding wire of suitable guage providing insulation glass sleeves, Varnising, Reassembling etc.

a) all as per item No 24 above but of capacity 15 HP

b) all as per item No 24 above but of capacity 7.5 HP

c) all as per item No 24 above but of capacity 5 HP

d) all as per item No 24 above but of capacity 3 HP

e) all as per item No 24 above but of capacity 2 HP

f) all as per item No 24 above but of capacity 0.5 HP

Servicing of Submersible pump set/Centrifugal pump set /sewage pump set 3 phase 20 HP along with dismantling of GI pipe from UG sump and refixing the same installed by repalcing bearing, bushing, nuts, bolts and gland packing, lathe work, shaft mateling, greasing and testing the pump set include two coat of synthetic enamel paint over the coat of red oxide primer complete as per directed by Engr In charge.

a) all as per item No 25 above but of capacity 15 HP

b) all as per item No 25 above but of capacity 7.5 HP

c) all as per item No 25 above but of capacity 5 HP

d) all as per item No 25 above but of capacity 3 HP

e) all as per item No 25 above but of capacity 2 HP

M& L for cleaning of Underground static water tank of 50000 Gallons capacity by scraping the walls by wire brush including removal of sludge and dirty water inside and cleaning the sump with fresh water by adding bleaching powder for disinfection and removing the chlorinated water incl epoxy paint on the entire surface of sump and writing the details of tank cleaning (capacity, Name, date of cleaning) as directed by Engr in charge.

M& L for cleaning of Underground static water tank / Overhead tank of 20000 Gallons capacity by scraping the walls by wire brush including removal of sludge and dirty water inside and cleaning the sump with fresh water by adding bleaching powder for disinfection and removing the chlorinated water incl epoxy paint on the entire surface of sump and writing the details of tank cleaning (capacity, Name, date of cleaning) as directed by Engr in charge.

M& L for cleaning of Underground static water tank of 10000 Gallons capacity by scraping the walls by wire brush including removal of sludge and dirty water inside and cleaning the sump with fresh water by adding bleaching powder for disinfection and removing the chlorinated water incl epoxy paint on the entire surface of sump and writing the details of tank cleaning (capacity, Name, date of cleaning) as directed by Engr in charge.

M& L for cleaning of Underground static water tank of 50000 Ltrs capacity by scraping the walls by wire brush including removal of sludge and dirty water inside and cleaning the sump with fresh water by adding bleaching powder for disinfection and removing the chlorinated water incl epoxy paint on the entire surface of sump and writing the details of tank cleaning (capacity, Name, date of cleaning) as directed by Engr in charge .

M& L for cleaning of Filteration plant consisting of Baffle Tank,Sedimentation tank of Capacity 25000 LPD by scraping the inside walls by wire brush complete including removal of sludge and dirty water inside and cleaning the sump with fresh water by adding bleaching powder for disinfection and removing the chlorinated water incl epoxy paint on the entire surface of tank and writing the details of tank cleaning as directed by Engr in charge.

Disconnecting and dismantling the existing indoor type, 11 KV horizontal draw out type VCB trolly of rupturing capacity 250/350 MVA, 400/630/800/1000 Amps from location and repair /overhauling and carrying out with the following and all as specified and directed by Engineer-in-Charge. (Note: spare parts will be measured & paid seperately.) (i) Inspecting / overhauling of manual / motorised spring drive mechanism by checking mechanism, motor and gear assembly, big gear assembly, stop bolt assembly, main shaft interlocking assembly, closing spring assembly, small cam with screw,motor cut -off limit switch, butter fly swich assembly and apply multi grease lubricant to function smoothly. (ii) Inspecting / overhauling of OLTLF assembly,earthfault release assembly, tripping coil, auxilary switch and checking of electrical wiring system. (iii) Inspecting / overhauling /cleaning and inspecting through insulators, vacuum interupters by carbon cleaner solution and apply dry graphite conductive sealant for electrical contacts to avoid carbon deposits on contact surfaces. (iv) Assembling all items/components parts to the respective postion & testing the breaker with High Voltage(DC) and meggering before and after high voltage test complete.

Testing of dielectric strength of transformer oil of indoor type transformer, 11KV/433 volt, filteration of transformer oil by passing through filtration plant to remove moisture, impurities and improving di-electic strength to above 40 KV for 1 minute including new transformer oil for toping up & testing after filtration complete as specified. (Note: Transformer oil will be measured & paid seperately.)

Supply and toping of transformer oil with 50KV di-electric strength complete all as specified.

Supply and fixing in repair of breather with 500 Grams celica gel of indoor type transformer 100KVA/200/400 KVA, all as specified and directed by Engineer-in-Charge.

Painting of Transformer, 100/200/315 KVA capacity 11KV/433V , Outdoor type, with one coat of synthetic enamel paint over a coat of red oxide primer after cleaning, scraping, and filling of cavities for out side surface of transformer complete all as specified and as directed by Engineer-in-Charge.

S&F in repairs indicating lamp holder with bulb LED(Red Yellow,Blue,Green) type to indicate incoming supply suitable for 24 V DC/110 VAC/230Volts AC and all as specified and directed.

Material and labour for fault finding on LT cables of any size and any length with fault detective machine by thumbing method and suitable high voltage and all as and directed by Engineer-in-charge.

Supply and fix cable jointing STRAIGHT THROUGH JOINT for 1100V grade cable for straight through joint complete with Jointing material (Heat shrinkable)and accessories suitable for 3.5 core XLPE armoured, alluminum conductor cable of size 70 to 185 sq mm and all as directed by Engineer-In-Charge.

Supply and fix cable jointing STRAIGHT THROUGH JOINT for 1100V grade cable for straight through joint complete with Jointing material (Heat shrinkable)and accessories suitable for 3.5 core XLPE armoured, alluminum conductor cable of size 240 to 400 sq mm and all as directed by Engineer-In-Charge.

Material and labour for draining out transfomrer oil from transformer tank and dismantling top cover along with conservator and 3No of HT bushings,4nos of LT bushings,1no of earth bushing,HV winding connection from bushing strud and LV winding from bushings care fully. dismsantling the core connections of 100 to 400KVA transformer, 11KV/433 Volts from tank and taking out core along with winding from tank carfully and dismantling off load tap changer and other winding connections from top of the core carefully and all as per manufacturer specifications and as directed by Engineer-in-Charge.

Material and labour for cleaning oil tank of transformer 100 to 400KVA, 11KV/415Volts and removing sludges from tank, manufacturers specifications and standard practice and all as directed. (Note: Transformer Oil will be measured and paid seperately).

M & L for dismantling air break gang operated switches vertical/horizontal mounted including insulators and operating mechanism for repair/ replacement of broken/worn out components such as insulators, nut/bolts GI pipe complete with oiling,greesing of operating mechanism etc all as specified and directed by Engr-in-charge.

M & L for Low voltage testing of 11KV/433V 100 KVA distribution Transformer ie open circuit test short circuit test, magnetizing current, Magnetic balance & IR Value test complete all as specified and directed by Engr-in-charge.

M & L for cable jointing kit for 11 KV (earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor of cable size 95 sqmm complete all as specified.

M & L for Cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of of cable size 95 sqmm complete all as specified.

Supply and laying XLPE insulated armoured (under ground) heavy duty electric cable with standard aluminum conductor 1100 Volts grade of cross sectional area 10 sqmm 4 core laid in trenches/ducts/through pipes /in floor road/along the pole etc complete all as specified.

Supply and laying XLPE insulated armoured (under ground) heavy duty electric cable with standard aluminum conductor 1100 Volts grade of cross sectional area 50 sqmm 3.5 core laid in trenches/ducts/through pipes /in floor road/along the pole etc complete all as specified.

Supply and laying XLPE insulated armoured (under ground) heavy duty electric cable with standard aluminum conductor 1100 Volts grade of cross sectional area 70 sqmm 3.5 core laid in trenches/ducts/through pipes /in floor road/along the pole etc complete all as specified.

Supply and laying XLPE insulated armoured (under ground) heavy duty electric cable with standard aluminum conductor 1100 Volts grade of cross sectional area 120 sqmm 3.5 core laid in trenches/ducts/through pipes /in floor road/along the pole etc complete all as specified.

Supply, laying, jointing and testing cable XLPE insulated screened PVC bedded galvanized steel strip or wire armoured electric power cable (Heavy duty) with stranded aluminium conductor cross sectional area 95 sqmm 3 core suitable for working on 11000 Volts earthed system, laid in tranches, in floor, in ducts, through pipe or along pole complete all as specified and directed.

Supply and laying unreinforced precast concrete cable cover, ISI marked class LV types 2 flat size 250mm x 150mm x 40mm having minimum average breaking load 200Kg, complying IS:5820-1970 made of concrete used of grade M-20, laid flat in trenches over the cable with the length of concrete cover perpendicular to the direction of the cable length, adjacent / abutting each other complete all as specified.

Galvanised tubing light grade 80 mm nominal bore for passing of cable, fixed to poles / walls / laying under floor/ roads complete with and including fittings as required complete all as specified

Sand cushioning with a layer of sand 8cm thick before laying of cable and 15cm thick after laying of cable in trenches complete all as specified and directed.

M & L for providing and fixing of Earthing Pit with 6 Meter depth boring of 100 mm diameter. Inserting Galvanized Iron Pipe 50 mm dia. with GI Earthing Strip of size 32x6 mm including backfilling with excavated smooth stuff, charcoal and salt & chemical powder for imporving the result and value of same not more than 1 ohm including masonry work for earth pit chamber size 600x600 mm with metal cover of size 450x450 mm of ISI grade including testing of pit resistance with 2 point method complete all as specified and directed by Engr-in-charge.

Supply and fixing in repair MCCB, AC 415 V, 50 HZ, fixed type, capacity 400 Amps, 3 Pole, 36 KA, suitable to be fixed in LT panel complete all as specified and directed.

Supply and fixing in repair MCCB, AC 415 V, 50 HZ, fixed type, capacity 200 Amps, 3 Pole, 36 KA, suitable to be fixed in LT panel complete all as specified and directed.

Supply and fixing in repair MCCB, AC 415 V, 50 HZ, fixed type, capacity 160 Amps, 3 Pole, 36 KA, suitable to be fixed in LT panel complete all as specified and directed.

Supply and fixing in repair MCCB, AC 415 V, 50 HZ, fixed type, capacity 125 Amps, 3 Pole, 16 KA, suitable to be fixed in LT panel complete all as specified and directed.

Supply and fixing in repair MCCB, AC 415 V, 50 HZ, fixed type, capacity 25 Amps to 100 Amps, 3 Pole, 16 KA, suitable to be fixed in LT panel complete all as specified and directed.

Earthing continuity galvanised iron strip 32 x 6 mm or main earthing lead fixed to wall with clamps or recess or croses or buried in ground or drawn in conduits/pipe or fixed to poles or any other indicated situation for loop earthing etc as required all as specified and directed by Engr-in-Charge.

Pin type, porcelain, vitreous, white,brown or green insulator including one galvanised mild steel spindle,two galvanised iron washers and one galvanised iron nut, 150mm height, 150mm dia for 11000 volts grade all as specified and directed by Engr-in-Charge.

Hirachand Sunderji and co