Military Engineer Services Tender

M&L for earthing complete with galvanized mild steel earth electrode plate 600 X 600 X 6 mm thick buried directly and vertically in ground connected to galvanized earth lead wire 4 mm dia by means of bolts, nuts, check nuts and washers of galvanized iron or steel all as shown in electrical Plate No 3 of MES SSR Part-I connected to main switch board or main control board all as specified and testing on completion including provision of earth wire protected by galvanized iron 15 mm bore medium grade pipe with all fittings from the earth electrode fixed along pole or wall with and including 25 x 6mm flat iron clamp, bolts, nuts and washers and watering pipe shall be 20 mm bore GI medium grade from top of the earth pit to top of earth plate electrode including all excavation and earth work in any type of soil and removal of soil upto 50 metre, PCC pit with pre-cast RCC cover with handle, charcoal/salt, funnel, CI frame etc including taking down old unsv earthing complete all as directed. NOTES:- (i) The concrete pit shall be made in PCC 1:2:4 type B-0, using 12.5 mm graded crushed stone aggregate 40mm thick precast cover slab of RCC (1:2:4), type B-1, using 20mm graded crushed stone aggregate with suitable MS handle in lieu of CI cover (ii) Item includes the cost of 7.5 metre GI pipe for protection of earth wire. Any variation in length shall be adjusted through deviation order (iii) Items includes cost of 7.5 metre earth lead wire. Any variation in length shall be adjusted through deviation order. (iv) Earth electrode shall be surrounded by adequate quantity of charcoal dust and salt to a packed thickness of 15 cm on all sides.

M & L for maintenance free chemical earthing system complete with 03 (three) nos copper bonded rods, 17.2 mm dia 3000 mm long electrode buried at suitable distance apart directly in ground, to bore holes of 120 mm dia vertically to a depth not less than 3.60 mtr deep below ground level with top edge of earth electrode at a depth not less than 100 mm below normal ground level, provision of clamps or brazed or both for each copper bonded rods made of copper and copper strip of size 25 x 3 mm & strip connection on the top of the electrode and copper strip of size 25 x 3 mm for inter connection of 03 nos copper bonded rods and laying at least 500 mm below in the ground and further connected to test point terminal block, including back filling of bore holes with advanced earth enhancing compound 96 kilogram (minimum) for artificial treatment to soil so as to achieve earth resistance below 01 Ohms as specified in para 19.140 of SSR Part-1 (2009), including provision of earthing pit in PCC(1:3:6) type C1 pre-cast cover RCC slab of size 400 x 400 x 50 mm with one handle made out of 8 mm dia round bar, including necessary earth work and three coats of white wash on plastered surface (exposed surfaces) and testing complete all as directed and including necessary earth work and testing complete all as specified and directed. Note:- Taking down old unserviceable dilapidated chemical earthing are included in quoted rate.

M&L for earthing complete with copper earth plate electrode 60 x 60 cm x 3.15 mm thick buried directly in ground vertically (earth pit not less than 2.25 m deep below normal ground level) with the top edge of the earth plate electrode at a depth not less than 1.5m below normal ground level and including copper earth strip of size 20 x 3 mm bolted (with GI nuts, bolts & check nuts) and riveted to earth plate electrode at one end and connected to metallic bodies of HT/LT equipments etc at the other end, earth strip encased in and including 50 mm bore GI medium grade pipe with all fittings from top of earth plate electrode to body of equipment fixed with and including 25x 6mm flat iron clamps, bolts, nuts and washers and including providing watering pipe 20mm bore GI pipe medium grade from Bottom of concrete pit to top of earth plate electrode complete all as specified and shown in electrical plate No 3 of MES SSR Part-I. The scope of work includes necessary excavation and earth work in any type of soil, removal of soil upto 50 metre, PCC pit with precast RCC cover, charcoal/salt, funnel, CI frame etc including taking down old unsv one complete all as specified and as directed. NOTES:- (i) The concrete pit shall be made in PCC 1:3:6 type C-1, using 20mm graded crushed stone aggregate 40mm thick precast cover slab of RCC (1:2:4), type B-1, using 20mm graded crushed stone aggregate with suitable MS handle in lieu of CI cover shown in electrical plate No 3 of MES SSR Part-I shall be provided. Reinforcement in RCC cover shall be of 8mm dia TMT bars laid @150mm c/c both ways. (ii) Item includes the cost of 7.5 metre GI pipe for protection of earth strip. Any variation in length shall be measured and paid through deviation order. (iii) Item includes cost of 7.5 metre earth strips. Any variation in length shall be adjusted through deviation order. (iv) Earth plate electrode shall be surrounded by adequate quantity of charcoal dust and salt to a packed thickness of 15 cm on all sides.

S&F in repair test point terminal block made of copper size 300 mm x 32mm x 6mm, drilled and screwed including 4 Nos 8mm dia 25mm long hexagonal head brass screws including box of size 90x90x90mm made of 1.6mm plain sheet painted with two coats of synthetic enamel paint over a coat of red oxide primer and screwed to wall for protection of test point complete all as specified.

S&F in repair test point terminal block made of gun metal or phosphorus bronze size 75x75x25mm of 6mm thickness or copper strip of 32x6mm 100mm long drilled and screwed including 4 Nos 8mm dia 25mm long hexagonal head brass screws including box of size 90x90x90mm made of 1.6mm plain sheet painted with two coats of synthetic enamel paint over a coat of red oxide primer and screwed to wall for protection of test point complete all as specified.

Labour only for refixing of air termination rod of any description complete all as specified and directed.

M&L for porcelain insulator suitable for fixing of aluminium/copper strip on roof/wall with necessary drilling and providing two nos screw for fixing complete all as specified and directed.

M&L in replacement, for Air termination, single pointed aluminium rod 12mm dia and 300mm long complete all as directed.

M&L in replacement for Air termination, single pointed, copper rod 12mm dia and 300mm long complete all as directed.

S&F in repairs air termination made up of high conductivity EC-grade copper conforming to BS 2874, with 01(one) No taper pointed air rod, 25 mm dia 1000 mm long, 03(Three) taper pointed air rod,12 mm dia 300 mm long, with multiple point adopter base, fixed to elevation rod 25 mm dia 1000 mm long and with copper air terminal base suitable for 25 mm dia elevation rod, base fixed with suitable brass screw and PVC screw fastener sleeve to parapet of RCC roof slab/ stair case canopy/ railing of water tank etc complete all as specified and directed.

S&F GI tube light grade 50mm dia with all fitting and laid in floors, under road, pavement or hard standing for protection of earthing strip including taking out old GI pipe complete all as specified and directed.

All as per item No. 14 here in before but 40 mm bore complete all as specified and directed.

M&L for construction of PCC earthing pit with cover for already existing earthing which pit broken. concrete pit in PCC (1:3:6) type C1 pre cast RCC (1:2:4) type B1 using 20mm graded aggregate, including pit cover slab 400 x 400 x 50 mm with one handle for lifting made out of 8 mm dia MS bar, wire mash funnel for watering and excavation earth work complete all as specified.

M&L for pre cast RCC (1:2:4) type B1 using 20mm graded stone aggregate cover slab of size 400 x 400 x 50 mm for already existing earthing pit with one handle for lifting made out of 8 mm dia MS bar complete all as specified.

Checking of E-N Voltage by multi meter or any other suitable device and detecting the cause of increase in EN voltage, due to any type of associated faulty earthing/loose connection of switchgears or any other malfunctioning of equipment causing increase in E-N Voltage. Replacement/treatment of any type of earthing/tightening of loose connection of switchgears to maintain EN voltage as per IE rule 1972 all as specified and directed. Note:- (i) Replacement of any type of earthing conductor will be measured paid separately under relevant items of this schedule. (ii) Earth megger, multimeter or any other device required to measure EN voltage will be arranged by contractor and cost for the same is included in this item. (iii) Treatment of any type of earthing will be measured paid separately under relevant items of this schedule.

Taking down unsegregated aluminium/copper/GI strip/wire of any size, including air termination rod of any description from roof/wall including serviceable/ broken porcelain insulator complete all as specified and directed.

Labour only for refixing of aluminium/copper strip of any dimension, obtained from serial item No. 19 here in before on roof/wall with porcelain insulator complete all as specified and directed. Note:- Broken insulator to be measured separately.

Supply and fixing copper strip of size 25x3 mm with saddles with required porcelain insulator, fixing screws etc. for roof conductors and down conductors complete all as specified and directed.

Supply and fixing copper strip of size 32 x 6 mm with saddles with required porcelain insulator, fixing screws etc. for roof conductors and down conductors complete all as specified and directed.

Supply & Fix Aluminium strip 25 x 3.15 mm with saddles and fixing screws etc. for roof conductors and down conductors above ground complete all as directed.

Supply and fixing, 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. but 25x4mm galvanised iron strip complete all as specified and directed.

Supply and fixing in repair 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 4mm dia galvanised iron or steel wire complete all as specified and directed.