REPAIR AND MAINTENANCE TO EXTERNAL ELECTRIFICATION, LT NETWORK INCLUDING REPAIR/REPLACEMENT OF LT/UG CABLE AND ALLIED WORKS AT 20 WING, 46 WEU AND 273 SU AFS UNDER GE (AF) BAGDOGRA

Amount

Excavation in trenches not exceeding 1.5 m wide and not exceeding 1.5 m in depth for taking out pipe line etc for repairs/laying cables etc and getting out in soft/loose soil complete all as specified and as directed.

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

Removal of excavated material [soil] to a distance not exceeding 50 m and depositing where directed at a level not exceeding 1.5m above the starting point complete all as specified and as directed.

Material and labour for clean dry sand in trenches/ducts for cushioning to cable complete all as specified. (Punned thickness shall be measured)

Supplying and laying Bricks; common burnt clay building bricks, sub-class ‘B’ designation 75 complete all as specified and as directed for cable protection in trenches.

Material and labour for removing and re-laying/laying of LT UG cables of any size for re- routing or any maintenance purpose all as specified and directed. (Note*- Excavation, removing, returning filling, sand and bricks will be measured and paid separately.)

Supply, fixing and laying in trenches after removing old cable and fixing or passing through pipe, 1100 Volts grade heavy duty LT UG cable, 120 Sqmm, 3.5 Core with XLPE insulated stranded Aluminium conductor served with an inner sheathing of PVC tape, Armoured with galvanised steel wire and overall sheathed including cable gland, lugs, jointing material etc, jointing, connecting, testing and commissioning all as specified and directed.

All as per Ser item No. 07 above here-in-before, but 95 Sqmm, 3.5 Core.

All as per Ser item No. 07 above here-in-before, but 70 Sqmm, 3.5 Core.

All as per Ser item No. 07 above here-in-before, but 50 Sqmm, 3.5 Core.

All as per Ser item No. 07 above here-in-before, but 35 Sqmm, 3.5 Core.

All as per Ser item No. 07 above here-in-before, but 25 Sqmm, 3.5 Core.

All as per Ser item No. 07 above here-in-before, but 16 Sqmm, 4 Core.

All as per Ser item No. 07 above here-in-before, but 16 Sqmm, 2 Core.

All as per Ser item No. 07 above here-in-before, but 10 Sqmm, 4 Core.

All as per Ser item No. 07 above here-in-before, but 10 Sqmm, 2 Core.

Supply and laying in replacement of Tubes, 'light grade', galvanised iron, 50 mm dia laid in trenches for cable protection at road crossing etc including necessary making good or fixing on wall/poles of any type, secured with clamps and required boring under road or hard surfaces complete with all fittings laid in trenches all as specified and as directed.

Supply and laying in replacement of Tubes, 'light grade', galvanised iron, 80 mm dia laid in trenches for cable protection at road crossing etc including necessary making good or fixing on wall/poles of any type, secured with clamps and required boring under road or hard surfaces complete with all fittings laid in trenches all as specified and as directed.

S&F in replacement of PVC weather proof, hinged door, junction box with, 240V, Neutral link, three phase connector, with IP 66/67 protection suitable for outdoor installation on pole/wall surface and including with 1No MCB SP of 6 Amps, necessary fixing arrangement such as clamps, nut, bolts, etc including dismantling old unserviceable junction box all as directed. (Make : Sintex Cat Part No. GSMB 2520, Hensel Cat Part No KF 2500H or equivalent of ISI Mark as approved)

Material and labour for preparation of surfaces for LT pole painting by scrapping damaged paint and painting with two coats of silver aluminium paint and writing pole No with black paint on yellow circuit each of 15 cm all as directed by Engineer-in-Charge.

M & L for pole Earthing complete with galvanized steel earth plate electrode 60cmX60cmX6mm thick buried directly in ground (earth pit not less than 2.25 mtr deep below normal ground level) with top edge of plate not less than 1.5 mtr below ground level connecting to the galvanised iron strip 25×4mm, by means nut bolt, nuts, check nuts and washer of the GI Earth strip protected by provision of GI light grade pipe 32 mm, GI light grade 20 mm bore pipe for watering perforated at bottom 1.75 mtr long placed on top edge of earth plate, common salt and charcoal filling, test point made out of phosphorus bronze with fixing arrangement, funnel, wire mesh and earth work in hard/dense soil, returning filling in and removal of surplus soil to a distance not exceeding than 50 mtr, all as per electric plate No 3 of SSR Part I 2009 and connection to earth test point all as specified incl testing on completion”.

All as per item No. 21 above here-in-before, but using 32x6mm thick GI strip but with 40 mm light grade GI pipe for earth strip protection.

S&F in repairs galvanized iron strip of size 25x4mm as earth continuity conductor buried in ground or fixed to wall/floor/ground provided with porcelain insulators space no less than 0.5 mtrs complete all as specified and directed.

All as item No 23 above here-in-before, but galvanized iron strip of size 32mmx6mm.

M&L for Cable jointing kit for LT straight through heat shrink type joint complete with jointing material and accessories suitable for 3.5 core XLPE armoured aluminium conductor cable of size 70 to 120 sqmm complete all as specified and directed.

All as per item No. 25 above here-in-before, but for 3.5 / 4 core XLPE armoured aluminium conductor cable of size 25 to 50 sqmm.

All as per item No. 25 above here-in-before, but for 4 core XLPE armoured aluminium conductor cable of size 10 to 16 sqmm.

Material and labour in repair for LT Panels outer doors shall be made out of 3.15mm thick CRCA Sheet factory fabricated lockable/ openable by keys or nuts locking system as per existing one. The degree of protection of outer doors shall be IP-54 and painting the complete panel from out side as per the existing colour complete all as specified and as directed. (Note:- Measurement of doors shall be taken before ordering to the suppliers/ manufacturer and duly approved by Engr-in-Charge.)

Supply and fixing in repairs Digital type Voltmeter 0-500 Volt, Three Phase Class 1.0 panel mounted 96 x 96 Sqmm, flush mounted case complete with necessary fixing all as specified and as directed.

Supply and fixing in repairs ammeter 0-250 Amps, Digital type, Three Phase Class 1.0 panel mounted 96 x 96 Sqmm, flush mounted case with suitable size of CT complete with necessary fixing all as specified and as directed. (Make :- HPL/Legrand/L&T/Schinder).

Supply and fixing in repairs LED indicators (colour red/yellow/blue/white/green) complete all as specified and as directed.

Supply and fixing in existing panel for replacement of 4 pole on load changeover switch (I-O-II), for open execution of capacity 125 amps, complete with necessary fixing all as specified.

Supply and fixing in existing panel for replacement of 4 pole on load changeover switch (I-O-II), for open execution of capacity 200 amps, complete with necessary fixing all as specified.

Taking down old UNSV ACSR conductor of any size from poles and M & L for ACSR conductor including stringing on LT poles complete incl aluminium binding wires, jumpering, bindings at insulators etc complete all as directed.

M&L for galvanised steel wire 4 mm dia to be stringed as continuous earthing wire on over head LT lines complete all as directed including taking down the old rusted earth wire.

S&F in replacement of Cross arm, bracings, supports, clamps and back plate fabricated from structural steel section, including nut, bolts, washers, welding, bendings cold or hot, drilling hole for both in any shape or size as indicated or directed and inclusive of one prime coat, one under coat and one finishing coat of paint including taking down the old unserviceable cross arms complete all as directed.

M&L for galvanised stay strand (Grade 2), size 7/4.0mm complete all as directed including taking down the old unserviceable stay wire.

M&L for stay assembly complete with accessories as shown in electrical plate No 1 (Loop type insulator, stay clamps, excavation and concrete only measured separately) using diameter of stay rod 16 mm and MS stay plate 230mm x 230mm including taking down complete all as directed.

Taking out old unserviceable PCC poles 9 mtr long and supply and erection of steel tubular swaged poles complete with cast iron base plate, finial taper plug, bolts, nuts, screws as specified type 410 SP-31 (9.0 mtr long) and shifting of conductors and insulators etc incl painting the exposed portion of the pole with two coats of aluminium paint over a coat of red oxide primer and internally through out plus embedded portion with two coats of black bituminous paint over a coat of red oxide primer. Marking of pole number with black paint in yellow circle all as specified and directed.

Demolition of PCC of any description above/below ground level exceeding 15cm complete all as specified and directed.

M&L for Plain cement concrete (1:4:8) type D-2 (using 40mm graded crushed stone aggregates) below GL as in foundation of pole etc all specified and directed.

M&L for Plain cement concrete (1:3:6) type C1 (using 20mm crushed stone aggregate) for coping for pole and stay in repairs all complete as per site requirement and as directed.

M&L for Plain cement concrete (1:3:6 ) type C2 (using 40mm stone aggregate) below GL as in foundation for stay assembly complete all as directed.

Disconnecting the windings of loose overhead conductors of LT lines from insulators and restringing the same for proper sag and rewinding incl aluminium winding wires, tapes etc and jumpering for any type of conductor complete of single run conductor all as directed. (Note :- Trimming of tree branches if or as required at site upto 3 mtrs from the conductor is deemed to be included in the rates quoted.)

Supply and fixing in replacement of insulator pin type porcelain vitreous , white brown or green insulator including one galvanised mild steel spindle, two galvanised washer and one GI nut 100 mm height and 65 mm dia for 1100 Volt grade complete all as directed.

Supply and fixing in replacement of insulator shackle type, porcelain, vitreous, white brown or green insulator including one galvanised mild steel straps, washers, insulator bolts, washer and nuts for working pressure 1100 Volts height 100mm, dia 115mm, section of strap (31x5) mm dia of bolt 14 mm complete all as directed by Engr-in-Charge.

Supply and fixing in replacement of loop type insulator vitreous white, brown or green insulator small size, with over all dimensions 65 x 90 mm, clearance of hole 16 mm complete all as directed.

Supply and replacing of 1100 volts grade heavy duty cable PVC insulated aluminium conductor served with inner sheathing of PVC tape and overall PVC sheathed in service connections suspended by insulating hangers not more than 01 metre apart including 4 mm dia GI suspension wire one twin core cable flat or circular stranded conductor of size 10 sqmm complete all as specified and directed.

Supply and fix in repairs LT PVC Line spacer & separators of superior quality of 2 Way spiral type all as specified and as directed.

Supply and fix in repairs LT PVC Line spacer & separators of superior quality of 3 Way spiral type all as specified and as directed.

Supply and fix in repairs LT PVC Line spacer & separators of superior quality of 4 Way spiral type all as specified and as directed .

M&L for taking out old unserviceable MCCB TPN/FP from existing Feeder pillar/ LT panel board and supply and fixing MCCB TPN/FP 63 amps capacity, rup capacity 16 KA, 415Volt s, 50 Hz including necessary modification in panel board for incoming and outgoing cable connection with replacement of brunt lugs of suitable size for aluminium conductor cable, nuts bolts etc as per site requirement and as directed.

All as per Item No 52 above, but 100 amps capacity, 16 KA complete all as specified and as directed.

All as per Item No 52 above, but 125 amps capacity, 16 KA complete all as specified and as directed.

All as per Item No 52 above, but 160 amps capacity, 36 KA complete all as specified and as directed.

All as per Item No 52 above, but 200 amps capacity, 36 KA complete all as specified and as directed.

All as per Item No 52 above, but 250 amps capacity, 36 KA complete all as specified and as directed.

All as per Item No 52 above, but from 350 amps to 400 amps capacity, 36 KA complete all as per site requirement and as directed.

Supply and fixing in replacement of 4 pole on load changeover switch (I-O-II), with SS Enclosure of capacity 125 Amps, complete with necessary fixing all as specified.

Supply and fixing in replacement of 4 pole on load changeover switch (I-O-II), with SS Enclosure of capacity 200 Amps, complete with necessary fixing all as specified.

Supply and fixing in replacement of 4 pole on load changeover switch (I-O-II), with SS Enclosure of capacity 315 Amps/320 Amps, complete with necessary fixing all as specified.

M&L for Cutting out the burnt out cable end and reconnecting with providing new lugs, tapes etc for cable size 25 sqmm 3.5 core to 50 sqmm 3.5 core complete all as specified and directed. (Note :- Replacement of cable lugs for all three phases and neutral to be measured as one job).

All as per Item No 62 above, but for cable size 70 sqmm 3.5 core to 95 sqmm 3.5 core complete all as specified and directed.

All as per Item No 62 above, but for cable size 120 sqmm 3.5 core to 300 sqmm 3.5 core complete all as specified and directed.

NOTES:- 1. The amount of schedule of credit shall be deducted from the total of this BOQ for arriving at contract sum.

SHRI P P SHARMA

M/S Banerjee construction co

M/S MANAS MITRA

M/S MOHAN GHOSH

SUNIL DAS AND CO

M/S SUNNY ENTERPRISE

NIRANJAN SARKAR