REPAIR/MAINTENANCE OF HT PERIMETER LIGHT CIRCUIT AND ALLIED WORKS AT TECH AREA AT AF STATION HALWARA UNDER GE (AF) HALWARA

Supply, installation, testing & commissioning of factory made HT Feeder Pillar box (conforming to IP-66 protection), of size 150cm x 65cm x 90cm with 03 Nos. aluminium busbar mounted on HT porcelain insulator, outdoor & double door type, dust, weather & vermin proof, having front & rear openable shutter(two leaf) by keys from both side having chromium plated fancy lock (2 Nos. in each compartment) with high quality rubber beading on door and locking arrangement. Feeder pillar box shall be made out of CRCA steel sheet 3.15mm thick duly powder coated painted by using 7 tank process. The top of the CRCA sheet shall be bent in slope/tapper with projection of 100mm on all sides. including cable entry arrangements at bottom and earthing terminals 2 Nos. at both side. The feeder pillar box should be mounted on frame base of MS angle iron of size 100mm x 100mm x 8mm duly zinc metal coated and legs 90cm long grouted/fixed in PCC blocks of 1:3:6, type C-1 of size 30cm x 30cm x 15cm complete all as specified and directed by Engr-in-charge.

Material and labour for earthing complete with galvanized steel earth plate electrode 600mm x 600mm, 6mm thick, buried directly in ground vertically to a depth not less than 2.25 metre deep below ground level with top edge of the plate not less than 1.5 metre below normal ground level, filled around with layer of charcoal dust and salt and connected to GI earth strip 32x6mm by means of bolt, nut and check nuts and washers of galvanzied iron or steel and other end of the earth strip, connected to test point/equipment/panel and protected by galvanized iron pipe light grade 50mm bore and watering pipe 20mm dia light grade with funnel and wire mesh, PCC 1:3:6 in chambers, RCC 1:2:4 in pit cover reinforced with 6mm dia deformed bars @ 15cm centre to centre both way including necessary excavation & earth work as all as shown in electric plate No. 3 of SSR Part-I complete all as specified & directed by Engr-in-charge. Notes: (i) PCC chambers shall be constructed at leasts 1.5 mtr away from the earth electrode and pipe for watering. (ii) On testing if the desired earth resistance is not obtained, earthing will be generated at No extra cost, till the desired earth resistance is obtained.

Material and labour for Boring of holes under road, pavement, hard standing by manually with necessary T&P for passing of HT cables complete all as specified & directed by Engr-in-charge.

Material and labour for GI pipe 80 mm bore , light grade as in trenches, under road,under floor, fixed to wall with fixing arrangement with suitable size of MS clamps made from 40mmx3mm size flat iron including nuts,bolts and washers or along the pole with fixing arrangement etc for cable protection complete all as specified & directed by Engr-in-charge.

Material and labour for Tracing out fault in HT under ground cable of any size with the help of tracing machine and rectifying the same with joints to restore the supply complete all as specified & directed by Engr-in-charge. Notes:- (i) Cable Joint kit shall be measured and paid seperately under the relevant item of BoQ (ii) Necessary earth work is deemed to be included in unit rate quoted by the contractor. (iii) All other necessary arrengements suitable for locating the faults is deemed to be included in unit rate quoted by the contractor. (iv) T&P required for the entire job shall be provided by the contractor at his own end and nothing extra shall be admissiable on this account.

Excavation in trenches not exceeding 1.5 metre wide and not exceeding 1.5 metre deep for foundations of poles/stays/cable etc not exceeding 10 Sqm area on plan and getting out in Soft / loose soil complete all as specifed and as directed by Engineer-in-Charge.

Returning filling in including spreading levelling, watering and well ramming in layers each not exceeding 25 cm thick in a soft/loose soil complete all as specified and directed by Enginer-in-Charge.

Removing surplus soil to a distance not exceeding 50 metre and depositing where directed at a level not exceeding 1.5 metre above the starting point complete all as specified and directed by Engr-in-Charge.

Material and labour for replacement precast concrete cable cover unreinforced class HV type 1 flat size 300mmx 180mm and thickness 40mm ISI marked laid flat, dry and adjacent to each other, perpendicular to the central axis of the cable in trenches, complete all as specified & directed by Engr-in-charge.

Material and labour for Sand cushioning to protection of underground cables, laid 8 cm before laying and 15 cm after laying of cable, and punned to form an overall layer of 18 cm thick, complete all as specified and directed by Engineer-In-Charge. Note: Punned thickness shall be measured.