REPAIR/MAINT OF EARTH STRIPS/LIGHTNING PROTECTION DEVICE/CHEMICAL EARTHING AND AMC OF EARTHING INFRA AT AFS UNDER GE (AF) JORHAT

Amount

Manpower for checking of earthing resistance value, and identifying any defects in the existing earthings such as broken earth pit, cover, wire mess, funnel, requirement of test point , insulators etc and maintaining record and informing the same for necessary rectification and rechecking the earthing resistance value after rectification complete all as specified and as directed. Note:- The qouted rate shall be deemed to be included for necessary tools, equipments, stationary, etc.

Excavating in trenches not exc. 1.50m in depth, over areas, getting out in soft / loose soil complete all as specified and as directed.

Excavating in trenches depth for each additional 1.5m or part thereof in depth beyond the first 1.5 m, over areas and getting out in soft / loose soil complete all as specified and as directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exc. 250mm in soft / loose soil complete all as specified and as directed.

Removing excavated materials not exc. 50m and depositing where directed at a level not exc. 1.50m above the starting point in soil complete all as specified and as directed.

S&F 40mm dia galvanised iron pipe with all fittings laid in trench, "light grade" for mechanical protection of earth strip of chemical earthing, etc. including taking down unserviceable steel tubing of any grade with connections and removal to store complete all as specified and as directed.

S&F 32mm dia galvanised iron pipe with all fittings laid in trench, "light grade" for mechanical protection of earth strip of chemical earthing, etc. including taking down unserviceable steel tubing of any grade with connections and removal to store complete all as specified and as directed.

S&F 20mm bore galvanised Iron watering pipe "light grade", with all fittings including taking down unserviceable steel tubing with connections including refixing or removal to store complete all as specified and as directed.

S&F as in repairs of earthing funnel / wire mesh and nut bolt, etc. complete all as specified and as directed

M&L for salt around the earthing plate in layer complete all as specified and as directed.

M&L for charcoal around the earthing plate in layer complete all as specified and as directed.

Fixing only existing 4mm dia galvanised iron or steel wire as 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 complete all as specified and as directed. Note : GI wire as obtained from existing shall be re-used.

S&F 32 x 6mm galvanised steel strip of complete with insulators and fixing with screws for fixing the strip on wall / roof including taking down old unserviceable strip in any position and situation complete all as specified and directed.

Fixing only existing 32 x 6mm galvanised steel strip of complete with insulators and fixing with screws for fixing the strip on wall / roof complete all as specified and directed. Note : GI strip as obtained from existing shall be re-used.

S&F 25mm x 3mm aluminium strip as earth continuity conductor 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 including taking down old unserviceable strip in any position and situation complete all as specified and directed..

Fixing only existing (aluminium/copper) strip as earth continuity conductor 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 including taking down old unserviceable strip in any position and situation complete all as specified and directed. Note : Aluminium/copper strips as obtained from existing shall be re-used.

S&F 20mm x 3mm copper strip as 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 including taking down old unserviceable strip in any position and situation complete all as specified and as directed.

M&F for earthing PCC pit in plain cement concrete (1:3:6) type C-1 (using 20mm graded stone aggregate) and RCC cover of size 450X450X50mm in RCC (1:2:4) type B-1 (using 20mm graded stone aggregate) reinforced with and including 8.0mm dia TMT Bars @ 100mm centre to centre both ways including demolation and removing broken RCC cover in existing at site complete all as specified and as directed

S&F as in repairs galvanised iron plate of size 600x600x6mm after taking out old unserviceable GI plate and refixing the same at orginal position complete all as specified and as directed. Note:- Rate of exavation, returing filling and removing, etc. shall be measured and paid saperately under relevant items in this schedule.

S&F as in repairs copper plate of size 600x600x3mm after taking out old unserviceable copper plate and refixing the same at orginal position complete all as specified and as directed. Note:- Rate of exavation, returing filling and removing, etc. shall be measured and paid saperately under relevant items in this schedule.

M&L as in repairs BFC (Conductolite) (25 Kgs) back fill compound bag complete all as specified and as directed. Note:- Rate of exavation, returing filling, etc shall be measured and paid saperately

M&L as in repairs magnesium sulphate (25 Kgs) / earthing compound bag complete all as specified and as directed. Note:- Rate of exavation, returing filling, etc shall be measured and paid saperately

S&F as in repairs copper rod 12mm dia and 300mm long air termination, single pointed after taking down old unserviceable air termination rod complete all as specified and as directed.

S&F as in repairs aluminium rod 12mm dia and 300mm long air termination, single pointed after taking down old unserviceable air termination rod complete all as specified and as directed.

S&F as in repairs earthing insulator fix to wall, roof, etc. for fixing of earth strip, lightening arrester, etc. complete all as specified and directed.

M&L for chemical earthing electrode advance encapsulated compound based CPRI tested maintanance free pipe-in-pipe technology upgraded (zinc & Alloy Coated), zinc coated (80-100) microns with pure zinc (99.9%) and alloy coating (200-250) microns, earthing system confirming IS 3034. The outer & inner pipe should be 76.2mm & 41.9mm dia ( dimention may vary + 1mm) , 3M length,zinc coated with additional special alloy coating 300mm on the topside for additional corrosion protection of the terminal complete. all as specified and as directed.

S&F thermoplastic weather proof empty box (IP 65) of size 300mm x 150mm x 170mm, fixed on wall with provision of nuts, bolts, washer, etc. including fixing of test point terminal block inside the box made out of gun metal or phosphorous bronze of size 75 x 75 x 25mm, drilled and screwed including 3 Nos 8mm dia, 25mm long hexagonal head screw after taking down old unserviceable complete all as specified and as directed.

M&L for copper nuts, bolts (machine made) with hexagonal or square heads at one end and screwed the other, or screwed both ends, each screwed end to be fitted with washers and one hexagonal or square nut, n exc 5 cm long and diameter of neck 5 to 10 mm, for connection of earthing strip including making necessary hole of required diameter complete all as specified and as directed.

M&L for painting of earth pit, pit cover and earthing marker plate with suitable colour of synthetic enamel paint all as specified and as directed. Note: Chemical earth pit and cover painted in red colour, conventional earth pit and cover painted in yellow colour and earthing marker painted in red colour and marking on it in black paint

M&L for MS earthing marker plate of size 8 inch x 6 inch welded on 18 inch length 10mm dia straight MS bar painted with red colour complete all as specified and as directed. Note:- The contract sum shall be calculated by deducting the amount shown in schedule of credit attached to this tender, from total amount of Schedule 'A'/BOQ.

TANKESWAR BORA

MS J B CONSTRUCTION AND CO

M/S SANTOSHI TRADERS

M/S DHAR AND DHAR

SANDHUSONS

AJOY DUTTA CHOWDHURY AND CO

A K DUTTA CHOWDHURY AND CO

M/S D J ENTERPRISE

Bidder Name

A K DUTTA CHOWDHURY AND CO

SANDHUSONS

M/S D J ENTERPRISE

AJOY DUTTA CHOWDHURY AND CO

M/S GOPAL ROY AND CO

TANKESWAR BORA

M/S DHAR AND DHAR

M/S SANTOSHI TRADERS

MS J B CONSTRUCTION AND CO