REPAIR/MAINT OF LIGHTENING CONDUCTOR AT VARIOUS PLACES AT LGJ MIL STN

Amount

Supply and fix single pointed air termination aluminium rod 12 mm dia 300 mm long including nuts & bolts for fixing air termination rod to pole/ pipe duly insulated by providing appropriate insulator all as required at site complete all as specified and directed.

Supply and fix aluminum strip 25 x 3mm as roof conductor or down conductor or along the pole/pipe complete with saddles/ insulators made out of porcelain or fibere and fixing screws complete all as specified and directed.

Supply & fix in repair galvanised iron or steel wire 4 mm dia for earthing fixed to pole or any other situation complete all as specified and directed.

Supply & fix GI strip 32x6mm, buried in ground or fixed to wall etc for loop earthing complete all as specified and directed by Engr-in-charge.

M&L for earthing with galvanized steel earth plate electrode 60x60cmx6mm thick buried directly in ground to a depth not less than 2.25 mtr deep below normal ground level with top edge of the earth plate not less than 1.5 mtr deep below normal ground level connected to galvanized iron strip of size 32x6mm as earthing lead by mean of nuts bolts and washers of steel or GI, 20mm dia GI watering pipe with funnel and wire mesh, PCC pit 1:3:6 with pit cover made of RCC 1:3:6 with suitable handle,angle iron frame made of angle iron of size 40x40x4mm, adequate qty of charcoal dust and salt layers all around the earth plate, earth work in any type of soil, removal of surplus soil and returning filling in all as required at site including test point made out of steel plate of size 75x75x6mm fixed to wall all as specified in plate No 5 of SSR Part-I 1991and directed by Engr-In-Charge.

Excavation in trenches not exc 1.5 m wide and n. exc 1.5 m deep in soft/loose soil for foundation/ cable etc n exc 10 Sqm on plan and n exc 1.5 Sqm in depth complete all as specified and directed by Engr-in-charge..

Returning, filling in including spreading levelling, watering and well ramming in layer n. exc 25 cm thick complete all as specified and directed by Engr-in-charge..

Removing surplus soil to a distance n. exc 50 m and depositing where directed at level n. exc 1.5 m above the starting point complete all as specified and directed by Engr-in-charge.

M&L for PCC (1:4:8) type D2 (using 40mm graded stone aggregate) as in foundation for electric pole etc complete all as specified and as directed by Engr-in-Charge.

M & L for PCC (1:3:6) type C2 (using 40mm graded stone aggregate) in coping for electric poles or for stay assy etc. complete all as specified and as directed by Engr-in-Charge.

M & L for PCC (1:2:4) type B1 (using 20 mm graded stone aggregate) in coping for electric poles or for stay assy etc. complete all as specified and directed by Engr-in-charge..

M&L for GI tubing light grade 50 mm bore for installation of air termination rod including necessary fittings and fixing arrangement complete all as specified and directed by Engr-in-charge..

M&L for GI tubing light grade 40mm bore for installation of air termination rod including necessary fittings and fixing arrangement complete all as specified and directed by Engr-in-charge..

Supply and fix porcelain based post insulators suitable to insulate earth strip from wall/ floor /ceiling including drilling holes to earth strip for fixing insulators and providing 2 Nos rawl plugs of appropriate size for fixing insulator to wall or floor or ceiling complete all as specified and directed.

Taking down carefully single pointed air termination alumnium rod complete with nuts & bolts including seggregating U/S and serviceable lenghts including removing from site or setting aside for reuse complete all as specified and directed .

Taking out carefully aluminum strip any size upto 25 x3 mm complete with saddles, GI tubing, insulators including seggregating U/S and serviceable lenghts, removing U/S from site or setting aside serviceable for reuse complete all as specified and directed.

Taking out carefully G.I. strip any size upto 32X6mm complete with saddles,GI tubing, insulators including seggregating U/S and serviceable lenghts, removing U/S from site or setting aside serviceable for reuse complete all as specified and directed.

Fixing only single pointed air termination aluminium rod, any size obtained from taking down of respective item of BOQ including necesaary new nuts, bolts & suitable insulator for fixing air termination rod after necessary cleaning complete all as specified and directed .

Fixing only aluminum strip 25x3mm complete obtained from taking down of respective item of BOQ after necessary cleaning including providing saddles/ GI tubing insulators all as required at site or directed by Engr-in- Charge.

Fixing only GI strip 32x6mm complete obtained from taking down of respective item of BOQ buried in ground or fixed to wall etc after necessary cleaning for loop ear thing as directed by Engineer-in-Charge.

Supply and fix in replacement Cast iron pit cover 10 mm thick complete with locking arrangement, handle and angle iron frame of appropriate size complete all as specified and directed by Engr-in-charge.

M&L for fixing of display Board of 75cmx30cm for Earth Pit made out of 3mm thick MS sheet welded on angle iron legs 0.5 mtr long (02Nos) of size 40x40x6mm duly embedded in PCC block type B-1 of size 23x23x30cm using stone aggregate, fixed in ground including necessary earthwork. Display Board shall be painted with two coat of synthetic enamel paint over a coat of red oxide primer complete all as specified and directed by Engr-in- Charge.

Supply, installation, testing and commissioning of maintenance free earth gird (grounding) of interconnected two earth electrode of size 85mm dia x 3 mtr long each. Metal conductor of electrode shall be Cu bounded MS strip of 50x6mm. Cu Bounding of MS rod/strip should be Min 250 microns. Earth electrode of 85mm. depth 3 mtr shall be placed in augured bore hole and embadding of interconnected strip shall be cast in high purity electrically conductive granuler material having ultra low resistive value 0.001 Ohm-m, resulting in increase of the effective surface area of the earth grid to lower the earth resistance. Conductive earth enhancing material shall be mix with cement in the ratio 3:1 which should not leach chemicals into the adjacent soil or underground water channels and should be in pH neutral range. Earth enhancing material should permanently protect the encased metal components of the earthing system.. All fittings like nuts, bolts and washers should be of stainless steel. electrode should withstand fault current upto 35KA for 1 second. electrodes top terminal be sealed permanently packed with conductive concrete and test link of Cu bonded MS/ Copper strip of size 50x6x200 mm shall be taken out to connect the equipment. Test certificate of NABL laboratory shall be submitted by the contractor, RCC pit cover including brazzing of all the joints upto the test point complete including dismantling and taking out old conventional earthing and accessories , strip, pipe, test point etc all as specified and directed. No precast electrodes to be used.Make :Elancrete / Vasconite/Equivalent. Note :- (1) Test certificate of earthing material from material from certified NABL laboratory shall be submitted & verified by GE. (2) Test Reports should not be more than 5 years old. (3) Test Report for fault current, rohhs, compliance resistivity value from NABL Certified/ CPRI lab is must and it has to be veified by GE.

S&F for test point terminal block made of gun metal or phosphorus bronze size 75x75x25 mm drilled and scrwed including 3 nos. 8 mm dia. 25 mm long hexagonal head screw complete alla s specified and directed.

Note:- The contract sum shall be calculated by deducting the amount shown in Credit Schedule attached to this tender, from total amount of Schedule 'A'/BOQ

Ganganagar Enterprises