SPECIAL REPAIR TO EM MISC ITEMS AT AF STN SIRSA

Amount

Disconnecting and taking out old unserviceable earthing, any type, including earth plate, earth wire, earth strip, earth rod, GI pipe, test point etc including necessary earthwork and making good disturbed surfaces complete all as specified and as directed.

M&L for boring in loose/soft soil 200mm dia, by means of hand/ machine drill, upto 3 Meter depth from ground level and pouring of sufficient water for at least 3 times per day (within working hours) for two days and making hole ready for pouring of Earth Enhancement Compound complete all as specified and as directed. (NOTE: Earth Enhancing Compound shall be measured and paid seperately)

Supply, installation, testing of CPRI tested maintenance free earthing system a set of Copper Bonded Earth Rod of 3 meter length, 17.2 mm dia made of high tensile low carbon steel circular rods, molecularly bonded with 99.9% electrolytic grade copper on outer surface (minimum copper bonding thickness-250 microns) with exothermically jointed copper bus bar of 200x50x6mm for long lasting and connection. Each copper bonded rod & exothermically jointed bus bar should be CPRI tested on 25 KA fault current complete all as specified and as directed. (NOTE: Earth Enhancing Compound shall be measured and paid seperately)

M&L for supply and pouring of RoHS tested Earth Enhancement Compound after mixing with water tested by NABL accredited lab in compliance to IEC 62561-7 with a resistivity < 0.12 ohm-m. It shall be free from bentonite and other hazardous substances. It shall be a permanent, non-corrosive material and will not leach any chemicals into the ground. It shall retain moisture even in high soil resistivity areas.Eco friendly Earth enhancing compound with resistivity of 0.2 Ohm, complete all as specified and as directed. Note: Measurement of Chemical will be done in Powder form. Contractor shall procure the item in sealed packets directly from manufacturer. This item shall be executed for Item No. 02 here-in-before)

S&F for earth continuity conductor or main earthing lead fixed to wall or batten as recess and chases or burried on ground or drawn in conduit pipe fixed to poles or any indicated situation for loop earthing as required with 4 mm dia GI wire complete all as specified and directed. Note: Cost of Screws, Saddles, insulator, Nuts and Bolts, etc. will deemed to be included in the Quoted Unit Rate.

S&F copper strip 32 mm X 6 mm with saddles and fixing screws etc, for roof conductors and down conductors above ground including provn of porcelain insulator @ 1.0 m spacing complete all as specified and directed. Note: Cost of Screws, Saddles, insulator, Nuts and Bolts, etc. will deemed to be included in the Quoted Unit Rate.

S&F GI pipe, 40 mm bore, light grade for protection of earth strip/wire under plinth protection complete all as specified and directed.

M&L for Cross arms, bracings, supports, clamps and black plates fabricated from structural steel sections including nuts, bolts, washers, welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed including painting with two coats of synthetic enamel paint over a coat of red oxide primer complete all as specified and as directed.

S&F Test Point Terminal Block made of Gun Metal or Phosphorus Bronze size 75x75x25mm, drilled and screwed including 3 Nos 8mm dia, 25mm long hexagonal Head Screw, complete all as per specified and as directed.

M&L for Cement Concrete 1:2:4 type B1 (20mm graded stone aggregate) as in earth pit covers, earthing pits and other earthing accessories etc including weathering, slightly rounded or chamfered angle and throuating, finishing all exposed surfaces of concrete with necessary formwork complete all as specified and as directed.

M&L for cutting grooves in concrete pavement surfaces with suitable kerf cutting machine, upto suitable size & depth (minimum 80 mm) for laying 40 mm bore GI pipes including kerfing, chiseling, cleaning and refilling the groove with suitable PQC, sealant and primer as required and finished properly complete all as specified and directed. (NOTE: Kerf cutting machine shall be arranged by contractor under his own arrangement. Quoted rate shall be deemed to be inslusive of the cost of PQC/sealant/primer required for filling of the grooves)

SHIV SHANKAR ENTERPRISES

AMBIKA ENTERPRISES

M/s Shree Bala Ji Construction Company