REPAIR AND MAINTENANCE OF HT OVER HEAD LINE UG CABLE TRANSFORMER AND CERTAIN MISC WORKS UNDER GE UMROI

Amount

Excavation in trenches in soft/loose soil not exceeding 1.5 mtr deep and not exceeding 1.5 mtr wide for laying of cable and erection of poles all as specified and directed at site.

Returning, filling in including spreading, levelling, watering and well ramming excavated soft/loose soil in layers , all as specified and directed at site

Removing excavated material surplus (soil ) to a distance not exceeding 50 mtr and depositing where directed at a level not exceeding 1.5m above the starting point all as specified and directed.

M&L for sand cushioning to under ground cable using locally available fine clean dry river sand over, under ground UG cable laid in trenches and gently punning to cushioning to cable complete all as directed by Engineer-in-Charge.

Supply & laying un-reinforced precast concrete cable cover class HV, type-I of flat size 300 mm x 180 mm x 40 mm complete in trenches all as specified & directed by Engineer-in-charge.

Taking down old unserviceable GI tubing light grade of 80 mm dia any type and any position complete all as specified and directed.

S&F 80 mm bore GI tubing “light grade” in trenches/ on pole for protection of cables complete all as specified & directed by Engineer-in-charge.

Supply, laying, connecting and testing XLPE HT UG insulated (Earthed),cable laid in trenches/fixed on pole etc with screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor, 11000 volts grade, cross sectional area 95 sqmm,3 core conforming to IS-7908(Part-I)1988, complete all as specified and directed. Note: Excavation & earth work shall be measured and paid separately.

M&L for cable jointing kit for 11 KV ( Earthed) grade cable for in door termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 Sqmm complete all as specified and directed.

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

Dismantling of old/rusted aluminium conductor steel reinforced of any size and removing the same from site of work all as specified and directed by Engineer-in-Charge.

Dismantling of insulator of any size/type and setting aside the serviceable insulator for reuse at site and removing unserviceable insulators from site of work complete all as directed.

M&L for aluminium conductor steel reinforced (ACSR) on pole ,stringing properly on insulators and binding with aluminium binding wire , jumpers etc complete of any size (Cat, Beaver ,Weasel , Squirel conductor). Note : - Measurement & Payment shall be made by measuring horizontal distance between centre of two adjacent pole and adding 3% extra for sag , joints and jumper etc complete all as specified and directed..

Supply & fix insulator pin type porcelain , vitreous , white ,brown or green 150 mm height and 150 mm dia including one galvanised mild steel spindle , two galvanised washers and one galvanised iron nuts for conductor working pressure 11000 Volts grade complete all as specified and directed.

Supply & fix insulator disc type porcelain , vitreous , white ,brown or green 145 mm height and 255 mm dia ball and socket type , single disc assembly for tension with tension clamp for conductor working pressure 11000 Volts grade complete as specified and directed.

Supply & fixing copper alloy moving contact blades for GOD including taking down unserviceable.

Supply &Fixing copper alloy contact jaw for GOD including taking down unserviceable.

Supply & fixing Tinned copper flexible jumper for GOD including taking down unserviceable.

M&L for danger notice plate 1.6 mm thick MS sheet , vitreous enamelled white with letters, figures and conventional skull & bones in signal red colour and fixed with MS clamps , bolts ,nuts of approved size for HT , 25x20 cm size including taking out the old outlived one.

Pruning / trimming the branches of trees alongwith overhead line of any description, 3 metre on all side below/ above/ sides of overhead line and removing the same upto 150 metre away complete all as specified and directed by Engineer-in-Charge (The above is to be ensured for the entire contract period by cutting/trimming of trees any number of times as required) but payment of each span shall be allowed only once.

M&L for restringing of HT OH lines with permissible sag including properly binding with insulators, etc for 3wire line (single Phase and neutral) complete all as specified and directed . Note:-Three line together will be measured as one length.

M&L for Cradles guard hexagonal / rectangular, fabricated with galvanized steel wire 3.15 or 4mm dia including dismantling the old cradle guard complete all as specified and as directed and including taking down old unserviceable.

S & F Mild steel screw bolts of 5 to 10 mm diameter of shank (machine made) with hexagonal or square heads at one end and screwed the other, each screwed end to be fitted with washers and one hexagonal or square nut, not exceeding 5 cm long.

M & L for stay assembly complete with all accessories such as mild steel galvanized flat iron stay clamp, 7/4 mild steel galvanized stay wire, mild steel galvanized stay bow, thimbles, 20mm dia mild steel galvanized stay rod and mild steel galvanized stay-plate all as shown in electrical plate No 1 of SSR Part-I complete all as specified and as directed.

M & L for Cross arms, bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers, welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed including two coats of aluminium paint over a coat of red oxide zinc chrome primer including preparation of surfaces complete all as specified & as directed.

M&L for plain cement concrete 1:3:6, type C2, (using 40mm graded stone aggregate) as in foundation filling and mass concrete complete all as specified and directed.

M&L for plain cement concrete 1:3:6, type C1, (using 20mm graded stone aggregate) as in coping including necessary use & waste of form work complete all as specified and directed.

Materials and Labour for Earthing complete with Galvanised earth plate 600mmx600mmx6mm thick, buried directly in ground (earth pit not less than 2.25m deep below ground level) with top edge of the plate not less than 1.5m deep below normal ground level, connected with GI earth strip of size 25x4mm as earth lead up to test point by means of nuts, bolts, check nuts protected by and including GI pipe 32 mm bore (light grade) and connected to main test point as directed and including concrete pit in PCC (1:3:6) type C-1, precast RCC (1:2:4) type B-1 cover slab 30cm x 30cm x 10 cm, reinforced with 8mm dia TMT bars @ 100 mm C/C both ways with one handle for lifting, made out of 8mm dia TMT bar embedded in pre cast cover slab, funnel, wire mesh, 20mm bore GI pipe (medium grade) for watering, charcoal and salt in alternate layers, including necessary excavation and earth work in any type of soil complete all as shown on Electrical Plate No 3 of SSR Part-I, complete all as specified and as directed. Note : Rate quoted by tenderers shall be deemed to include for following provisions:- [i]. Excavation & earth work in any type of soil including removing of surplus material upto 50 M.[ii]. PCC 1:3:6 type C1 using 20mm graded stone aggregate in pit & 40mm thick precast RCC 1:2:4 type B1 cover 30x30 cm with 8mm TMT bars @ 10 cm C/C both ways with handles.[iii]. Main earthing strip from earth electrode to test point upto 7.5 mtr.[iv]. Funnel with watering pipe [GI pipe] 20mm bore [ISI marked] medium grade & copper lugs, charcoal & salt as reqd.[v]. GI protection pipe of size 32 mm bore light grade 7.5m.

M&L for GI strip of 25mmx4 mm for extending the earth continuity conductor or main earthing lead fixed to wall on batten 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 and fix as in repairs complete all as directed.

Demolition and dismantling cement concrete in floors and paving not exceeding 15 cm thickness(below or above ground level) complete and removing from site all as specified and as directed.

M & L for plain cement concrete (1:4:8) type D-2 using 40 mm graded stone aggregate in foundation of pole / strut etc including necessary form work all as specified and directed by Engineer-in-Charge.

Supply, fixing and erection of steel tubular swaged poles complete with MS base plate, finial taper plug, bolts, nuts & screws as specified type 410 SP-55 ( 11 mtr) as per relevant IS specification including two coats of aluminium paint over a coat of red oxide primer and making alternate red and black strips 30 cm height ( total 5 Nos) including taking down old pole any type complete all as specified and directed.

M&L for painting steel tubular poles 11 mtr height with one coat of aluminium paint from bottom to top including cross arms etc after cleaning and preparing the surface and marking alternate yellow and black strips 30 cm height total 5 Nos with two coats of synthetic enamel paint over a coat of primer complete all as specified and as directed.

Supply and fixing in repair Switch air break, gang operated triple pole mechanically operated mounted on with 9 insulator and steel frame with operating mechanism working from ground level current rating upto 400A, 11000 V grade having nine insulators, vertical type including dismantling of existing air break gang operated switch and removal of the same from site.

Supply and fixing in repair expulsion drop out fuse carrier assembly outdoor type including fuse element up to 60 Amps and insulator suitable for HT 11 KV complete and dismantling of existing fuse carrier assembly and removal of the same from site all as specified and as directed.

Supply and fix in replacement lightening arrester expulsion type complete with all fittings, transmission class, rated frequency 50 Hz nominal discharge current 65 KA,11 KV complete including taking down old unsv from pole all as directed by Engr In Charge.

Supply and fix in replacement of synthetic insulating mat , 19 mm thick suitable for 11000 Volts of size 2 m x 1 m (ISI marked) complete all as specified and directed.

Supply and filling of fresh transformer oil conforming to ISD-335/BS dielectric strength 40 kV at the gap of 4 mm and topping up to the entire satisfaction of Engineer-in-Charge complete.

Dehydration and filtration of transformer oil by mechanical plant to achieve dielectric strength of 40 KV at gap of 4 mm and re-filling the same (oil drained out before opening the transformer) complete. Note :- (a) Dehydration plant to be brought at site by the contractor. (b) Dehydration and filtration to be carried out when the transformer is on load at site and rate quoted shall be deemed to be inclusive of the cost of arrangement of plant by the contractor and its transportation to site. (c) Before filtration the transformer oil Dielectric strength to be tested.

Preparation of surfaces of transformer, scratching old paint and spray painting two coats of synthetic enamel paint smoke grey colour (1st quality) and writing MES and SM No in “BLOCK LETTERS” with computerized black heat resistance tape complete all as specified of capacities 100 KVA to 160 KVA

M/L for replacing the gun metal gate valve 25mm dia heavy duty high pressure with crutch or butterfly handle screwed both ends for iron pipes along with suitable GI plug all as directed after removing the old unserviceable valve.

Supply and fix the silica jell container (breather) including silica jell suitable for the transformers of capacity 100 KVA to 400 KVA after dismantling the old unserviceable breather.

Supply and replace dry silica gel to the transformers of capacity 100 KVA to 400 KVA after taking out the existing fully moisturized silica jell.

Replacement of existing unserviceable HT bushing complete with HT brass rod including gasket set (Set of three) etc. with new set complete of 100 KVA transformer.

Replacement of existing unserviceable LT bushing complete with LT brass rod including gasket set etc. (set of four) with new complete of 100 KVA transformer

Replacement of existing unserviceable HT bushing complete with HT brass rod including gasket set (Set of three) etc. with new set complete of 250KVA.

Replacement of existing unserviceable LT bushing complete with LT brass rod including gasket set etc. (set of four) with new complete of 250KVA.

Replacement of existing unserviceable HT bushing complete with HT brass rod including gasket set (Set of three) etc. with new set complete of capacity 160KVA.

Replacement of existing unserviceable LT bushing complete with LT brass rod including gasket set etc. (set of four) with new complete of capacity 160 KVA

Taking down burnt transformer of capacity 250 KVA from PCC foundation using suitable capacity crane after disconnecting HT/LT cable and draining out the complete transformer oil and keeping in safe custody in clean and dry containers for reuse. Opening the top cover of the transformer, disconnecting and taking out complete core assembly and dismantling it for checking the serviceability of the coil winding, checking the condition of the body, cleaning the tank and remove sludge/dirt, cleaning the coils limbs, refixing of core, core assy,tap changer assy,HT/LT winding connection, terminal studs of HT/LT sides and reassembling of transformer after repairs from authorised workshop , refitting the transformer coil including improvement of insulation resistance value within desired level by heating or any other method to required level complete all as directed to the entire satisfaction of engr-in-Charge upto 250KVA. Note : Copper winding wire shall be measured and paid separately.

M & L for replacement of old copper winding wire with new copper winding wire including all required materials such as copper winding wire, cotton taper etc baking

M/s JK Jangid and Company

M/s Jaiswal and Co

M/S T N CONSTRUCTION