REPAIR/ MAINTENANCE TO HT NETWORK INCLUDING CONNECTED WORKS AT AF STN ADAMPUR

Excavation in trenches not exceeding 1.5 metre wide and not exceeding 1.5 metre in deep and getting out in soft/loose soil for laying/taking out of underground cables and foundation of poles etc and getting out complete all as specified and directed.

Supply and lay dry river sand including spreading, levelling, punning for cushioning with a layer 80mm thick before laying of cable and 150mm thick (punned down to 100mm thick) after laying of cable in trench/duct complete all as specified and as directed. Note : For measurement purpose only punned thickness (overall 18 cm) shall be considred for measurement and payment.

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

Removing of surplus excavated 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 as directed.

Supply and lay factory made unreinforced pre-cast concrete cover block HV type-1 flat of size 300x180x40mm laid flat and dry in trenches over the cable for protection as length perpendicular to the direction of cable adjacent to each other complete all as specified and as directed.

M&L for Boring of holes under roof, pavement, hardstanding by trenchless technology using ultrasound technique and necessary machine including HDPE pipe of 75mm dia suitable for 0.4mpa working pressure all as pecified and directed.

Taking out/down old existing HT cable 1100 Volts grade cables of size 95/120 Sqmm, 3 Core, XLPE, armoured, laid in trenches including bricks for protection and stacking, removal ot store for reuse or credit complete all as specified and directed.

Supply, Lay, testing and commissioning of HT UG cable XLPE insulated , screened, PVC bedded, galvanized steel strip or wire armored electric power cable (heavy duty earthed) with stranded aluminium conductor, 11000 volts grade of size 3 core 120 Sqmm complete laid in trenches or fixed on walls /floors etc.all as specified and as directed.

All same as per item No 8 here-in-before but cross sectional area 150 Sqmm, 3 Core.

Opening connections of 11 kV faulty cable at both ends and re-connecting the same after rectification of cable fault, rectifying the cable fault by means of cable fault detector mounted on the vehicle, charging capacity not less than 15 kV passing through the cable to detect exact location of faulty point of the cable. Each fault should be traced at a maximum distance of one metre of exact fault point. Note :(i) Rates shall be included taking up or down defective/faulty HT UG Cable from existing trench/duct/pole and relaying the same after rectification of defects, including meggering of cable, (ii) Cost of necessary excavavation, reterning refilling and removal of soil upto 1 metre depth and 3 metre length shall be deemed to be included in the quoted rate. (iii) Cost of transporation charges for the vehicle, T&P required is deemed to be included in the quoted rate. (iv) To maintain utmost security at AF Station, contractor will arrange his workmen along with T&P in a manner that nonfunctional HT line is made functional swiftly within 24 hour of receiving of complaint from the MES, during entire contract period. (v) Not withstanding with the provision of "Compensation for Delay' envisaged under condition 50 of IAFW-2249, General Conditions of Contracts, additional compensation @ Rs. 500/- day will be charged from contractor in case he fails to make the HT line functional to the entire satisfaction of Engineer-in-Charge within 24 hour of receiving of complaint from the MES regarding non working of HT line/HT UG Cable.