FILTRATION OF TRANSFORMER OIL INCLUDING IMPROVEMENT TO SUB STATIONS AND ALLIED WORKS AT MIL STN DHANA.

Excavation in trenches not exceeding 1.5 m wide and not exceeding 1.5 m in depth (for cable, pole, stay etc) not exc. 10 sqm on plan and getting out in soft/loose soil, complete all as specified and directed.

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

Removing excavated soil not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point, complete all as specified and directed.

Material & labour for sand cushioning for cable protection in trenches complete as per the process specified in SSR Part-I 2009, all as specified and directed. Note. Punned thickness of the sand shall be measured and paid.

Supply and laying Supplying and laying reinforced precast concrete cable cover Class LV, Type I, flat, size 250mm x 150mm x 40mm, laid as cable protection cover incl taking down old unsv bricks complete all as specified and directed.

Supplying & laying, XLPE insulated PVC inner sheathed, 50 Sqmm, 3.5 core, armoured with galvanised steel strip or wire heavy duty underground cable with aluminium multi stranded conductor, 1100 volt grade, laid in trenches/duct, passing through pipe/duct or fixed on pole and connecting and testing complete all as specified and directed.

All as per item No 06 above but cable of size 95 sqmm 3.5 core

All as per item No 06 above but cable of size 150 sqmm 3.5 core

Supply & fixing, in repair, GI pipe 50mm bore, light grade, laid below road / fixed along the poles / walls with necessary clamping, etc complete all as specified and directed.

All as per item No 09 above but pipe size 40mm bore

Material & labour for filteration/ dehydration of insulating oil of transformer in position, without distributing power supply to achieve dielectric strength 40 KV or above (when tested with 2.5 mm gap electrode) including all arrangement of T&P, transportation etc, complete all as specified and directed.

Material & labour in repairs for insulating oil (Transformer) confirming to IS 355 and topping up/replacement of transformer oil duly filtered to withstand dielectric strength 60KV or above (when tested with 2.5mm gap electrode), complete all as specified and directed.

Supply & fixing in repair transformer breather assembly oil seal type make of heavy transparent plastic body having top and bottom cover made of aluminium or ,mild steel of capacity 500grams filled with silica gel fixed in replacement complete all as specified and directed.

Material & labour for Inspection, servicing of 11 KV, 200 Amps, gang operated air break switch, removing all jumpers cleaning the contact points making new jumpers with appropriate capacity including greasing/oiling/replacement of minor part as required for satisfactory operation, complete all as specified and directed.

Material & labour for stay assembly complete with accessories as shown in electrical plate No. 1, complete with galvanised stay strand of size 7/3.5mm with vitreous porcelain loop type insulator, white, brown or green with over all dimension 65x90 mm, clearance of hole16 mm, stay clamps made out of FI 50mmx 6 mm complete with nut, bolts and washer of galvanised iron including excavation & earthwork in any type of soil and concrete work in PCC (1:3:6) type C-2 using 40mm graded stone aggregate (Pit size 800x600x1200mm) complete all as specified and directed and including taking down old stay assembly.

Material & labour for opening all jumpers, loosening conductors from all insulators, restringing overhead ACSR conductor of any size, any capacity and any length of span of 4 to 6 conductors including the sag upto 3 % of span including fastening and rejumpering, complete all as specified and directed.

Material & labour for danger notice plate of 1.6 mm thick mild steel sheet, vitreous enameled white, with letters, figures, and coventional skull and bones, in signal red colour and fixed with MS clmaps, bolts, and nuts of approved size, for LT works & of 20 cm x 15 cm size, complete all as specified and directed.

Material & labour for preparation of old painted surface of transformer of capacity upto 250KVA complete all as specified as per approved colour by Engr-in- Charge after painting re-write the name, capacity number without disturbing the supply complete all as specified and directed.

Material & labour for earth continuity conductor or main earthing lead fixed to wall on batter or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc as required 32x6mm dia galvanised iron strip, complete all as specified and directed.

Trimming / cutting of vegitation all around the main power house and sub station and disposing of the same to a distance not exceeding 50 mtrs and depositing where directed by Engr-in Charge.

Material & labour for repair the existing tansformer foundation size by using cement and necessary PCC work including finished the outer surface complete all as specified and directed.

Writting of installation details and formation details on existing MS board duly stickered (computer letter) with Blue background and written with Installation details with white colour letters more than 40mm size including painting to the steel surface with two coats of synthetic enamel paint over a coat of red oxide primer complete all as specified and directed by Engineer-in-Charge

NOTE :- SCHEDULE OF CREDIT (Amount shall be deducted offline from the total quoted amount to workout the net contract sum to be considered for acceptance.) [(-) Rs 20490.00 /- ]