urgent repairs to equipment protection system for heavy equipments at main workshop at 507 abw kankinara under ge north kolkata . - supply and installation of advance conductive compound based chemical compound technology in repair with upgraded high tensile low carbon steel rod as per ul 467 and as per bs 7430 with copper coating 250 microns, earthing system confirming to is:3034. the rod should 17.2 mm & 3 meter length with rod to tape clamp, cr 125 ( type a ) additional protection of the terminal. chemical compound should be the highly conductive compound as per bsen 50164-7 with 25 kg each bag & resistivity should be 0.05 ohm meter. the job includes digging the pit and refilling the same by fursecem back fill compound ( ground enhancer ) , the bfc should be eco friendly it should not contain environmentally hazardous material / metal having mixed with 3:1 cement, a conductive concrete is formed. the earth pit should provided with a light weight inspection pit cover pt-205 for protection and safe guard of terminals. in areas where soild condition is bad good earth is to be arranged to fill the excavated pits by mixing fursecem- a convenient sand permanent solution by adding with 3:1 ration chemical compound with the earth electrode is the main component of the earthing system which is in direct contact with the ground and thus provides a mean of releasing or collecting earh leakage currents. the material should have good electrical conductivity and anti corrosion property in wide range of soil conditions. qty: 04 nos. make: abb fursecem as per rb 336. neach earth pit should contain:- n ( a ) 1 no copper bonded high tensile low carbon steel, 17.2mm dia, 3 meter length. n ( b ) rod to tape clamp ( type a ) n ( c ) 25 kg chemical compound as bsen 50164-7 n ( d ) light weight inspection pit cover with 5000 kg weight load capacity. n2. supply and fixing of ai strip 20 x 3.15mm for 4 nos chemical earthing. qty: 88rm n3. supply of earth test point terminal box. qty: 04 nos. n4. m&l for 3.3 kv ht lightning arresters expulsion type complete with all fittings, transmission class, discharge capacity 65 kilo amp. qty: 04 nos. nnote: old demolished materials obtained from the above work shall be the contractor’s property for which contractor shall pay credit. n n [ ser no. 1 to 3 complete one job only ]