REPAIR MAINTENANCE OF LIGHTENING ARRESTERS EARTHING PITS AND CONNECTED ITEMS UNDER GE NW NOFRA COLABA MUMBAI

Amount

M&L in repair / replacement of earthing complete with galvanized steel earth plate electrode 60cm x 60cm x 6mm thick buried directly in ground to a depth not less than 2.25 mtr deep below normal ground level with top edge of plate not less than 1.5 mtr below normal ground level and connected to GI strips 32 x 6 mm by means of nut, bolt & washer and protected by 40mm dia GI Pipe light grade and watering pipe of 20mm dia GI pipe light grade and connected to earth test point all as specified or indicating and testing on completion complete incl excavation ,earth work, PCC Chamber (1:3:6) type C-1 and 40mm thick RCC pit cover in RCC(1:2:4) type B-1 using 6mm dia MS round bars @ 150mm c/c both ways all as shown in electrical plate No. 5 os SSP part-1 complete all as specified and directed by Engineer in charge.

M&L in repair / replacement of earthing complete with galvanized steel earth plate electrode 60cm x 60cm x 6mm thick buried directly in ground to a depth not less than 2.25 mtr deep below normal ground level with top edge of plate not less than 1.5 mtr below normal ground level and connected to Galvanised earth lead wire 4.00 mm by means of nut, bolt & washer and protected by 40mm dia GI Pipe light grade and watering pipe of 20mm dia GI pipe light grade and connected to earth test point all as specified or indicating and testing on completion complete incl excavation ,earth work, PCC Chamber (1:3:6) type C-1 and 40mm thick RCC pit cover in RCC(1:2:4) type B-1 using 6mm dia MS round bars @ 150mm c/c both ways all as shown in electrical plate No. 5 os SSP part-1 complete all as specified and directed by Engineer in charge.

M&L for repair / replacement of 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 GI Strip 32 x 6 mm complete all as specified and directed by Engineer in charge.

S&F in repair test points terminal block made of gun metal or phosphorus bronze size 75 x 75 x 25 mm drilled and screwed including 3 nos 8 mm dia 25 mm long hexagonal head screw building lightening earth test point complete all as specified and directed by Engineer in charge.

M&L for laying of, in reapir, old aluminium earthing strips complete all as specified and directed by Engineer in charge.

M&L in replacement of Air Termination, single pointed aluminium rod 12mm and 300mm long complete all as specified and directed by Engineer in charge.

Materal and labour for repair in CPT Cirprotec CPT-L Early Streaming Emission (ESE) Lightning rod with stainless steel body type advance lightning protection system in compliance with standard NFC 17-102 & UNE 21186-96, working on principle of early streamer emission technology which will offer level 1 protection for upto 42 mtrs radius when mounted on the RCC concrete base on building at a height of 4.5 mtrs from the place to protected complete all as specified and directed by Engineer-in-charge. Make:- NIMBUS-JEF Techno or erico or equivalent as approved by GE

Supply and erection of repair of mounting structure of 4.5 mtrs height with base plate suitable for roof mounting on RCC concrete base on building complete all as directed by Engineer-in-charge. Make:- NIMPUS-JEF Techno or erico or equivalent as approved by GE

Supply and fixing of 1x 50 sqmm copper conductor with 0.5 mm thick PVC sheathed cable complete all as directed by Engineer -in-charge

Supply and fixing in repair of 4 digital electro mechanical lightning event counter in weather proof resistance complete all as directed by Engineer-in-charge. Make:- JEF Techno or erico or its equivalent as approved by GE

Supply and fixing in repair of test link for connecting the earth pit and down conductor complete all as directed by Engineer-in-cahrge. Make:- JEF Techno or erico or its equivalent as approved by GE

Material & labour for maintanance free environment friendly earth elctrode set comprising of 17.2mm dia, 3m long rod low carbon steel molecular copper bounded for a thickness of 250 micro OHMS, highly conductive ANS/INSF STD-60 certified carbon bound backfill compound which shall set like concrete according to BS 7430 & IEEE 80 (each bag shall contain 50 Ibs) complete all as directed by Engineer-in-charge. Make:- JEF Ecosafe or erico or its equivalent as approved by GE

Material and labour in repair for PCC pit 1:2:4 type B-1, cover reinforced with XPM, weight not less than 4kg/sqm and 6mm dia bar handle earth pit angle iron frame of size 25x25x3mm complete all as specified and directed by Engineer-in-charge. (Size of pit shall be as directed by Engineer in-charge)

Supply and fix in repair / replacement of GI pipe light grade 40mm dia for support to air termination rod including fixing with clamp, nuts, bolts complete all as directed by Engineer in-charge

Material and labour for Road/PCC cutting necessary for laying of 40mm GI pipe for cable protection and making all good complete all as directed by Engineer in-charge

DHARMESH ENTERPRISES

OM SAI POWER SYSTEMS

ELECTRO ASSOCIATES

SHREE JAGDISH FURNITURE CO.

NOEL ENGINEERS