Replacement of existing unserviceable earthing with bore well earthing and unserviceable lightening protection by ESE system including other connected works at Ralawas under AGE I Nagtalao

Amount

Taking out old Unsv lightning protection system including Air termination rod, Aluminium strip , GI strip and earthing of any type complete all as specified and directed by Engineer-in-charge.

M & L for earthing with bore well earthing by drilling bore with bore machine for poles and other machinery / eqpt using GI pipe heavy duty 50 mm dia as earth electrode driven up to a minimum depth of 60 meters below ground level, duly made holes of 6 mm dia at 20 cm intervals, along the length of GI pipe and providing the charcoal salt mixture incl GI pipe 150 mm dia light grade as protection upto depth of 12 meters and GI strip of 32x6 mm to connect the test point or directly to the system including testing and commissioning omplete. (i) Earth strip of size 32x6 mm upto a length of 7.5m including porcelain insulator of suitable size or any other petty items required for fixing will deemed to incl in this item rate (ii) Earthing material will be laid in the trench of borewell on the presence of Engr-in-charge or his rep.

Supply installation testing and commissioning of lightening protection system Early Streamer Emission (ESE) lightening protection Air terminal OPR (Optimized Pulse Rod) complies with NF C-17-102 standards complete all as specified and directed by Engr-in-Charge. Make – ABB Model OPR-30 and equivalent in Alstom/OBLUM .

Supply and fix stainless steel 3 M mounting mast plus 2 m , 30 mm dia with guy wire and base plate fabricated with support structure and guying kit provided with suitable mounting base plate having provision for fixing of optimised pulse rod and arrangement for down conductor of lightening protection system all as specified and directed by Engr-in-Charge.Make:- Cat Part No Mast 3 M & MAST 2M30 of ABB or its equvalent in Alstom/OBLUM

Supply, fixing, testing and commissioning of lightening stroke counter working electro mechanically without any power supply. Eqpt should have capacity of counting lighting stroke of 0.4 KA to 150 ka, all as specified and directed by Engr-in-Charge. Make- LS Counter of ABB or its equivalent in Alstom/Oblum

Supply and laying of single core multi stranded copper cable down conductor of size 70 sqmm incl mounting accessories and clamps with suitable fixing material all as directed at site.

Supply & installation of of G I Strip of size 32 mm X 6 mm as a ring conductor network buried in earth 1 mtr below from surface all as directed at site by Engr-in -charge .

Supply & Installation of Test point terminal block made of gun metal or phosphorus bronze size 75x75x25mm drilled and screwed including 3 nos. 8mm dia 25mm long hex. head screw complete all as specified and directed by Engr-in -charge

Shree Karni Construction

M/S JAGDAMBA ENTERPRISES