GE AF/AMB-14/2021-22 MAINTENANCE OF DG SETS, VOLTAGE STABILIZERS, BOOSTER PUMPS AND STORAGE TANKS AT GE (AF) AMBALA

Amount

Excavation in trenches not exceeding 1.5m wide and not exceeding 1.5m in depth for foundations, manholes, etc. or for laying cables/pipes, erecting poles, etc. not exceeding 10sqm on plan and getting out in soft / loose soil complete all as specified and as directed

Excavation in trenches not exceeding 1.5m wide and not exceeding 1.5m in depth for foundations, manholes, etc. or for laying cables/pipes, erecting poles, etc. not exceeding 10sqm on plan and getting out in hard / dense soil complete all as specified and as directed

Returning, filling in, including, spreading, leveling, watering and well ramming in layers not exceeding 25cm deep as in any type of soil complete all as specified and as directed

Removing excavated materials to a distance not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point in any type of soil including spreading in low lying area and leveling complete all as specified and as directed

M&L for fine dry river sand cushioning by laying 8cm thick layer below the cable for making soft bed and 15cm above the cable and then punning down to its consolidated thickness of 18cm after the cable is laid all as specified in SSR Part-I complete all as specified and as directed Note: Only punned thickness of sand shall be considered for measurement purposes

Supply and laying burnt bricks of sub-class 'B' designation 75 laid in trenches for cable protection complete all as specified and as directed

M&L for plain cement concrete 1:3:6 (type C-2) using 40mm graded stone aggregate as in coping, bases of poles, post holes, for making good disturbed surfaces of road / hard standing, etc. finished top surfaces even and smooth without using extra cement complete all as specified and as directed

M&L for taking out burnt winding and rewinding of buck boost transformer installed in voltage stablizer with copper winding wire as per original gauge, using super enameled/DPC winding wire as per relevant IS, including insulating materials such as cotton tape, packing and sleeves etc. varnishing by vacuum impregnation and testing for proper functioning complete all as specified and as directed

Supplying, installing and testing servo motor of rated torque 3kgcm, 240V,AC supply, syncronised with the existing voltage stablizer including taking out old motor and disposing off complete all as specified and as directed

Supplying, installing and testing dimmer of size 30A suitable for 40kVA voltage stablizer alongwith gear, RC, hexa, etc. including taking out old motor and disposing off complete all as specified and as directed

Supplying, installing and testing dimmer of size 15A suitable for 20kVA voltage stablizer alongwith gear, RC, hexa, etc. including taking out old motor and disposing off complete all as specified and as directed

Supply & filling / topping up engine oil (as per relevant IS) grade 20W 40 suitable for DG sets as per existing complete all as specified and as directed

Supply & filling / topping up voltage stabiliser oil (as per IS 335) as per existing complete all as specified and as directed

M&L for filtering servo voltage stabilizer oil with stream line filtration plant in service connections having di-electric strength below 40kV including removing of moisture contents and testing the oil after filtration for acidity, insulation, resistance, etc. as per relevant IS complete all as specified and as directed Note: (i) Testing agency, etc. will be as approved by the Engineer-in-charge (ii) Report numbers of tests will be duly entered in MBs (iii) Test reports are to be submitted alongwith claim for any payment

Notes for item No. 15: (i) Cartage shall include both loading and unloading, etc. (ii) Replacement of defective spares / rewinding of transformers of voltage stabilizers will be measured & paid separately under respective items and labour charges for fixing of defective spares shall deemed to be included in unit rate quoted in this item

M&L for disconnecting electric connections from DG sets 3 phase 50Hz, of any description and in any position and decoupling the engine from alternator unit for servicing / overhauling by taking out and removing unserviceable/defective parts/spares, cleaning, servicing, de-scaling water jackets, oiling and greasing of necessary parts, refixing the serviceable parts in position after servicing, replacement of unserviceable parts including draining-out of existing engine oil and filling new engine oil of same grade and replacing filters and refixing all accessories and testing on full load complete all as specified and as directed for the following capacities of DG sets:

10 to 35kVA

40 to 63.5kVA

Notes for item Nos. 17 to 21: (i) The quoted rate shall include for fixing the serviceable parts in position and replacement of unserviceable parts with new parts (ii) New replaced spares/parts, fresh engine oil will be measured and paid for separately under respective items here-in- after and quoted rate above is deemed to be inclusive of labour element of these. (iii) Replacement of small/minor parts such as nuts, bolts, washers, locking nuts, small springs, `O’ rings, screws/gaskets/ packing /studs etc. shall be deemed to be included in the quoted rate (iv) Engine oil shall be drained out carefully and collected in suitable containers and stored properly for checking serviceability including cleaning of oil sump by pouring kerosene oil all and new oil shall be filled in as directed

Supply of fuel filter element (set of two) suitable for DG set 10 to 35kVA

Supply of fuel filter element (set of two) suitable for DG set 40 to 63.5kVA

Supply of fuel filter element (set of two) suitable for DG set 82.5kVA

Supply of fuel filter element (set of two) suitable for DG set 100kVA

Supply of oil filter element (set of two) suitable for DG set 10 to 35kVA

Supply of oil filter element (set of two) suitable for DG set 40 to 63.5kVA

Supply of oil filter element (set of two) suitable for DG set 82.5kVA

Supply of oil filter element (set of two) suitable for DG set 100kVA

Supply of air filter suitable for DG set 10 to 35kVA

Supply of air filter suitable for DG set 40 to 63.5kVA

Supply of air filter suitable for DG set 82.5kVA

Supply of air filter suitable for DG set 100kVA

Supply of air bypass filter suitable for DG set 10 to 35kVA

Supply of bypass filter suitable for DG set 40 to 63.5kVA

Supply of bypass filter suitable for DG set 82.5kVA

Supply of bypass filter suitable for DG set 100kVA

Supply of fan belt set suitable for DG set 10 to 35kVA

Supply of fan belt set suitable for DG set 40 to 63.5kVA

Supply of fan belt set suitable for DG set 82.5kVA

Supply of fan belt set suitable for DG set 100kVA

Supply of radiator hose pipe of suitable size and length suitable for DG set 10 to 35kVA

Supply of radiator hose pipe of suitable size and length suitable for DG set 40 to 63.5kVA

Supply of radiator hose pipe of suitable size and length suitable for DG set 82.5kVA

Supply of radiator hose pipe of suitable size and length suitable for DG set 100kVA

M&L for taking out radiator assembly from DG set carefully and cleaning the same internally as well as externally with chemical, cleaning the fins throughly and refixing the same at its original position and testing complete all as specified and as directed

M&L for repair/maintenace of self starter any capacity any size, rewiring from panel to starter and ascertaining any type fault after checking and servicing and repairing to make it functional, including replacement of existing contactors, relay unit with auxiliary CTs, battery charging unit 12V 10A complete all as specified and as directed

M&L for disconnecting alternator, 12V capacity, taking out burnt winding, cleaning all limbs, rewinding with new super enemelled copper wire as per original gauge/size/type/data, as per relevant IS, including providing new insulating materials viz. cotton tape, packing, sleeves, etc. and varnishing by vacuum impregnation and baking of coil core assembly, duly re-fixing, connecting all electrical connections, commissioning and testing complete all as specified and as directed

M&L for disconnecting alternator, 3 phase, 4 wire, 50Hz, 0.8PF, 415V, AC, 100kVA capacity, insulation class H, 50 cycles 1500RPM, self excited, self regulated, brushless type, at any position / location, collecting and transporting to workshop, taking out burnt winding, cleaning all limbs, rewinding with new super enemelled copper wire as per original gauge/size/type/data, as per relevant IS, including providing new insulating materials viz. cotton tape, packing, sleeves, etc. and varnishing by vacuum impregnation and baking of coil core assembly, duly re-fixing, bringing in at site, connecting all electrical connections, commissioning and testing complete all as specified and as directed

S&F MS sheet, 3.15mm thick, cover suitable for DG sets, as per the existing gauge and type duly fixing it by welding and nut and bolts making hole for outlet of exhaust pipe, etc. suitable for acoustic enclosure of DG sets of any size, with breathing ports, ai circulation, etc. painting the cover with two coats of synthetic enamel paint (of approved tint) complete all as specified and as directed

M&L for checking and servicing DG set battery 12V 92 to 180Ah, by cleaning the battery terminals with hot water and applying petroleum jelly over the terminals, checking the water level, topping up with distilled water including connecting up and testing on installation complete all as specified and as directed Note: Battery terminals, battery cable and distilled water will be measured and paid under respective items herein. Labour element for these shall be included in this item

Supply of copper conductor multi-stranded 70sqmm as in battery lead suitable for 180Ah battery

Supply of battery terminal made of bronze with suitable nuts, bolts and washers, etc. of existing size

Supply of distilled water for batteries

S&F in repairs battery charger 240V 50Hz for charging batteries upto 12V 6Ah to 180Ah with trickle / boost charging mode complete all as specified and as directed

Supply and pouring fresh coolant in DG sets as per existing specifications and manufacturer's recommendations complete all as specified and as directed

Supply of self starter bearing suitable for 12/24V starter as per existing

S&F fly wheel ring of existing type, by heating it to fix properly on engine, on dismantling and opening of DG set and taking out unserviceable fly wheel ring by separating of alternator and diesel engine, and testing on fixing complete all as specified and as directed

S&F stopper alongwith relay suitable for DG sets as per existing type and capacity complete all as specified and as directed

S&F pinion gear suitable for DG sets as per existing type and capacity complete all as specified and as directed

S&F relay iOPS-0404D-9/M-7/Y15/N for DG sets as per existing type and size complete all as specified and as directed

S&F relay of 8 Pin MKG-2P for DG set all as per existing type and size complete all as specified and as directed

S&F copper thimbles 10 to 95sqmm of existing type, size and make complete all as specified and as directed

M&L for servicing of AMF panel of DG set, by taking out and removing unserviceable / defective parts, cleaning, servicing, minor adjustment of internal wires, replacing unserviceable items like nuts, bolts, washers, thimbles, wire, fuse, gaskets and changing other minor items / spares as required to make the panel functional and testing on refixing and connecting up complete all as specified and as directed

Supply, installation, testing & commissioning of powder coated, compartmentalized cubical outdoor canopy type LT panel, IP-54 protection class, of suitable size, symetrical with overload, short circuit and earth fault protection, having bus bar chambers with rated aluminium bus bar, duly insulated with coloured PVC sleeves as per standard code, rigidly mounted on bakelite / DMC insulators (square / round with good insulation resistance), fabricated out of 3.15mm thick 16SWG CRCA sheet steel, totally enclosed, dust proof, weather proof, vermin proof, double door with suitable locking arrangements and suitable for operation on 415V, 50Hz, 3 phase, 4 wire AC supply with gland plates, cable glands, lifting hooks, ventilating louvers, inter connected with PVC insulated solid copper conductor cable, IS-694 marked, 1100V grade, 4sqmm, earthing, suitable power factor capacitors, labeling electrical components, interlocking, suitable for termination of cables, mounted/fixed on and including MS angle iron stand /frame 40cm height from FFL, fabricated out of 40x40x6mm thick MS angle legs (4Nos.) duly grouted in and including 100mm thick PCC 1:3:6 platform of suitable size (with 0.5m offset to all sides of panel), painting all exposed metal surfaces of legs with two coats of synthetic enamel paint (of approved tint), accommodating and including switch gears and connecting up complete all as specified and as directed for the following:

Panel with the following: (i) Aluminium bus bar of rating 350A vertical mounted- 4Nos. (ii) Onload change over switch 250A FP, 415V, 50Hz, open execution type- 1No. (iii) MCCB, AC, 415V, 250A conforming to IEC-947 IS-13947-I breaking capacity 25kA at 415V, 4 pole (wireless sensor network) frame size/type ASS with adjustable thermal and fixed magnetic setting for incoming- 01No. (iv) MCCB, AC, 415V, 160A conforming to IEC-947 IS-13947-I breaking capacity 25kA at 415V, 4 pole (wireless sensor network) frame size/type ASS with adjustable thermal and fixed magnetic setting for outgoing - 01No. (v) MCCB, AC, 415V, 125A conforming to IEC-947 IS-13947-I breaking capacity 25kA at 415V, 3 pole (wireless sensor network) frame size/type ASS with adjustable thermal and fixed magnetic setting of current rating 125A for incoming to submersible pump set- 02Nos. (vi) Automatic star delta starter, 3 phase, 415V, 50Hz having contactors, overload relay, electronic timer, phase sequence corrector, on/off push button, copper wiring suitable for submersible pump motor upto 50HP with and including proper fixing arrangements and copper cable thimble -02Nos.

Item No. 67 contd.. (vii) Single phase preventer suitable for 415V- 02Nos. (viii) MCB SPN 32A 10kA- 02Nos. (ix) Digital ampere meter flush mounted 0-250A, CT operated, square- 03Nos. (x) Digital volt meter flush mounted 0-500V, square- 01No. (xi) Phase indiacating lamps industrial LED type (RYB)-1set (xii) Danger notice plates of suitable size on front panel board duly painted- 01No.

Panel with the following: (i) Aluminium bus bar of rating 350A vertical mounted- 4Nos. (ii) Onload change over switch 250A FP, 415V, 50Hz, open execution type- 1No. (iii) MCCB, AC, 415V, 250A conforming to IEC-947 IS-13947-I breaking capacity 25kA at 415V, 4 pole (wireless sensor network) frame size/type ASS with adjustable thermal and fixed magnetic setting for incoming- 01No. (iv) Single phase preventer suitable for 415V- 02Nos. (v) Digital ampere meter flush mounted 0-250A, CT operated, square- 03Nos. (vi) Digital volt meter flush mounted 0-500V, square- 01No. (vii) Phase indiacating lamps industrial LED type (RYB)-1set (viii) Danger notice plates of suitable size on front panel board duly painted- 01No.

Panel with the following: (i) Aluminium bus bar of rating 200A vertical mounted- 4Nos. (ii) MCCB, AC, 415V, 160A conforming to IEC-947 IS-13947-I breaking capacity 25kA at 415V, 4 pole (wireless sensor network) frame size/type ASS with adjustable thermal and fixed magnetic setting for incoming- 01No. (iii) MCCB, AC, 415V, 63A breaking capacity 25kA at 415V, 4 pole (wireless sensor network) frame size/type ASS with adjustable thermal and fixed magnetic setting for incoming- 03Nos. for booster pump (iv) Automatic star delta starter, 3 phase, 415V, 50Hz having contactors, overload relay, electronic timer, phase sequence corrector, on/off push button, copper wiring suitable for Booster pump motor upto 20HP with and including proper fixing arrangements and copper cable thimble - 03Nos. (v) MCB TPN 32A 10kA- 01No. (vi) MCB SPN 32A 10kA- 02Nos. (vii) Single phase preventer suitable for 415V- 03Nos. (viii) Digital ampere meter flush mounted 0-250A, CT operated, square- 04Nos. (incoming-01No. for booster pump/motor-03Nos.) (ix) Digital volt meter flush mounted 0-500V, square- 01No. (x) Phase indiacating lamps industrial LED type (RYB)-1set (xi) Danger notice plates of suitable size on front panel board duly painted- 01No.

Panel with the following: (i) Aluminium bus bar of rating 200A vertical mounted- 4Nos. (ii) MCCB, AC, 415V, 100A conforming to IEC-947 IS-13947-I breaking capacity 25kA at 415V, 4 pole (wireless sensor network) frame size/type ASS with adjustable thermal and fixed magnetic setting for incoming- 01No. (iii) MCCB, AC, 415V, 63A breaking capacity 25kA at 415V, 4 pole (wireless sensor network) frame size/type ASS with adjustable thermal and fixed magnetic setting for incoming- 03Nos. for booster pump (iv) Automatic star delta starter, 3 phase, 415V, 50Hz having contactors, overload relay, electronic timer, phase sequence corrector, on/off push button, copper wiring suitable for Booster pump motor upto 20HP with and including proper fixing arrangements and copper cable thimble - 03Nos. (v) Onload change over switch 100A FP, 415V, 50Hz, open execution type- 1No. (vi) MCB TPN 32A 10kA- 01No. (vii) MCB SPN 32A 10kA- 02Nos. (viii) Single phase preventer suitable for 415V- 03Nos. (ix) Digital ampere meter flush mounted 0-250A, CT operated, square- 04Nos. (incoming-01No. for booster pump/motor-03Nos.) (x) Digital volt meter flush mounted 0-500V, square- 01No. (xi) Phase indiacating lamps industrial LED type (RYB)-1set (xii) Danger notice plates of suitable size on front panel board duly painted- 01No.

Panel with the following: (i) Aluminium bus bar of rating 350A vertical mounted- 4Nos. (ii) MCCB, AC, 415V, 250A conforming to IEC-947 IS-13947-I breaking capacity 25kA at 415V, 4 pole (wireless sensor network) frame size/type ASS with adjustable thermal and fixed magnetic setting of current rating 100 for incoming- 01No. (iii) MCCB, AC, 415V, 125A breaking capacity 25kA at 415V, 4 pole (wireless sensor network) frame size/type ASS with adjustable thermal and fixed magnetic setting of current rating 100 for incoming submersible pump - 02Nos. for booster pump (iv) Automatic star delta starter, 3 phase, 415V, 50Hz having contactors, overload relay, electronic timer, phase sequence corrector, on/off push button, copper wiring suitable for Booster pump motor upto 20HP with and including proper fixing arrangements and copper cable thimble - 02Nos. (v) Onload change over switch 250A FP, 415V, 50Hz, open execution type- 1No. (vi) Single phase preventer suitable for 415V- 02Nos. (vii) Digital ampere meter flush mounted 0-250A, CT operated, square- 04Nos. (incoming-01No. for booster pump/motor-03Nos.) (viii) Digital volt meter flush mounted 0-500V, square- 01No. (ix) Phase indiacating lamps industrial LED type (RYB)-1set (x) Danger notice plates of suitable size on front panel board duly painted- 01No.

Notes for serial item Nos. 66 to 72: (i) The location of installation shall be as directed by the Engineer-in-charge (ii) Feeders / Panels shall be CPRI approved and of make as detailed hereinafter (iii) Contractor shall submit shop drawings from CPRI approved manufactures / fabricators for approval before procurement (iv) Drawings of panels showing location of switchgears shall be got approved from the GE before incorporation at site

Supply, install, testing and commissioning AMF panel factory fabricated, outdoor cubical, double door type (kiosk type) suitable for DG set capacity 100kVA/80kW, stove enameled pre-wired with copper control cable with accessories and switch gears, grouted in floor standing on angle iron frame of size 50x50x6mm with front and back openable, fabricated out of MS sheet 3.15mm thick of suitable size complete with suitable PCC platform as per manufacturer's specification, as specified and as directed consisting of the following: (i) Contactor 4P of suitable size for 100kVA (ii) Copper bus bar of current rating 200A, sensitivity relay set, unit with auxiliary CTs (iii) Electronic latch circuit with tripping indication (iv) Re-set facilities phase MVR relay unit with single phase protection with 2NO/NC auxiliary contacts (v) 3 Phase AVR relay complete unit (vi) Self sequential starting relay unit 12V DC complete with alarm and power contactor (vii) Electronic timer 220V for main contactor with 1NO/NC auxiliary contactor (viii) Electronic timer 220V for main contactor with 1NO/NC auxiliary contactor but for fuel cut off operation

Taking up or down steel tubing and connections from any location, position, etc. and disposing off complete all as specified and as directed of the following sizes of pipes:

100mm bore

80mm bore

50mm bore

40mm bore

25mm bore

20mm bore

15mm bore

S&F steel water tubing, medium grade, galvanised with screwed and socketed joints, in any length, including supply and fixing all fittings, ISI marked conforming to IS: 1239 fixed to walls / ceilings or laid in floor / trenches for protection of cable, etc. complete all as specified and as directed of the following bores:

100mm bore

80mm bore

50mm bore

40mm bore

25mm bore

20mm bore

15mm bore

Taking up old rusted / unserviceable CI / DI water main pipes with spigot and socketed / flanged ends with all fittings including burning out lead joints and recovering lead, etc. and disposing off complete all as specified and as directed of the following sizes: Note: Excavation and earthwork shall be measured and paid for separately under respective items

150mm bore

100mm bore

M&L for DI pipes of 150mm size with socketed and spigot ends suitable for tyton joints centrifugally cast (spun) class K-9 conforming to IS:8329 cut to any length laid in trenches including rubber gaskets joints complete all as specified and as directed Note: Fittings shall be measured and paid separately under respective item

M&L for DI pipes of 100mm size with socketed and spigot ends suitable for tyton joints centrifugally cast (spun) class K-9 conforming to IS:8329 cut to any length laid in trenches including rubber gaskets joints complete all as specified and as directed Note: Fittings shall be measured and paid separately under respective item

M&L for cast iron specials / fittings like bends (any type, radius and angle) tapers any type (straight, bend, increasing, decreasing or double socket etc.), tee pieces single branch 'Y' junction, double branch, cross (all sockets or socket and spigot), collars, caps, plug, etc. upto and including 150mm bore complete all as specified and as as directed Note: Lead joint, excavation and earthwork shall be measured and paid separately under respective items

M&L for ductile iron specials / fittings like bends (any type, radius and angle) tapers any type (straight, bend, increasing, decreasing or double socket etc.), tee pieces single branch 'Y' junction, double branch, cross (all sockets or socket and spigot), collars, caps, plug, etc. upto and including 150mm bore complete all as specified and as as directed Note: Lead joint, excavation and earthwork shall be measured and paid separately under respective items

M&L for rubber gasket (tyton joint) suitable for DI/CI pipes of the following sizes of pipe: Note: Excavation and earthwork will be measured and paid separately under respective items

150mm bore

100mm bore

M&L for supplying, installing, testing and commissioning chlorination dozing pump of capacity 4LPH, maximum pressure 5.5kg/sqcm, stroke speed 100 duly fixed with suction/delivery pipes, plcaed and fixed at any location including taking down and disposing off old/unserviceable pump from any location complete all as specified and as directed

M&L for supplying, lowering, installing, testing and commissioning submersible pump set with 3 phase submersible electric motor coupled with the pump having 1100LPM discharge at 155m head, 12 stage or as per OEM recommended stage suitable for bore of 100mm dia including taking down and disposing off old pump from any location complete all as specified and as directed Note: The capacity of pump shall be suitable to give required discharge at the required head

M&L for installing, testing and commissioning 1HP sludge pump, ISI marked, including necessary accessories required for fixing and commissioning like fixing clamps, nylon rope of suitable size for carrying the pump in sludge well, cable required for connecting from panel to sludge well, connecting up, etc. including taking out existing unserviceable pump set from sludge well, with damaged GI column pipe, cables, bends, etc. and disposing off complete all as specified and as directed

Supplying, laying / fixing, testing and commissioning of electric cable, 1100V grade aluminium conductor XLPE insulated, armoured cables conforming to IS-7098 (Part-I)-1988, stranded, XLPE insulation, PVC tape inner sheath laid in trenches, passing through ducts, etc. fixed on poles, etc. including taking up old / unserviceable cable and brick covers and disposing off complete all as specified and as directed of the following sizes: Note: Excavation/earthwork, bricks, sand cushioning and GI pipe will be measured and paid separately under respective items herein

3.5 core 95sqmm

3.5 core 70sqmm

M&L for construction of brick masonry valve pit chamber with 100mm thick foundation using PCC 1:3:6 (type C-2) using 40mm graded stone aggregates, 230mm thick brick masonry wall built in CM 1:6, 10mm thick internal and 15mm thick external plastering in CM 1:4, finished even and smooth without using extra cement and 6mm thick MS sheet cover including 40x40x6mm MS angle frame fixed in PCC 1:2:4 type B-1 coping with 25x6mm flat iron hinges, hold fasts, handles, locking arrangements, applying two coats of synthetic enamel paint over one coat of red oxide zinc chrome primer to all steel surfaces including excavation and earth work in any type of soil and disposal of surplus soil to a distance of not exceeding 50m, complete all as specified and as directed for the following sizes (internal dimensions): Note: The cost shall be inclusive of all items of work required for the execution and entire completion of this item and nothing extra shall be paid separately in any other items of BOQ

S&F in repairs battery rechargeable type 12V 150Ah complete all as specified and as directed

S&F in repairs battery rechargeable type 12V 180Ah complete all as specified and as directed

Supplying, lowering, jointing and testing PVC insulated, multi-stranded copper conductor 16sqmm (nominal area) 3 core flat submersible cable complete all as specified and as directed

Supplying, lowering, jointing and testing PVC insulated, multi-stranded copper conductor 10sqmm (nominal area) 3 core flat submersible cable complete all as specified and as directed

M&L for earthing using GI earthing strip with galvanised steel earth plate electode 600x600x6mm thick buried directly in ground, earth pit not less than 2.25m deep below ground level connection to and including GI strip of size 25x4mm extended to 7.5m as earth lead by means of GI bolts, nuts, etc. with provision of charcoal and salt all as per electrical plate No. 3 of SSR Part-I including water arrangement with GI pipe 20mm dia (medium grade), earth lead protection pipe 50mm medium grade with bends, elbow, etc. from earth plate to test point, excavation and earthwork in any type of soil, returning, filling, ramming and removing of soil to distance not exceeding 50m, make good to match with existing surface making PCC pit (earth chamber) having internal size 300x300x300mm and outer size 600x 600x600mm with RCC reinforced cover 50mm thick and testing on completion including making test points on wall as per SSR specifications, taking down and disposing off old earthing complete all as specified and as directed

M&L for earthing using GI earthing strip with galvanised steel earth plate electode 600x600x6mm thick buried directly in ground, earth pit not less than 2.25m deep below ground level connection to and including GI strip of size 32x6mm extended to 7.5m as earth lead by means of GI bolts, nuts, etc. with provision of charcoal and salt all as per electrical plate No. 3 of SSR Part-I including water arrangement with GI pipe 20mm dia (medium grade), earth lead protection pipe 50mm medium grade with bends, elbow, etc. from earth plate to test point, excavation and earthwork in any type of soil, returning, filling, ramming and removing of soil to distance not exceeding 50m, make good to match with existing surface making PCC pit (earth chamber) having internal size 300x300x300mm and outer size 600x 600x600mm with RCC reinforced cover 50mm thick and testing on completion including making test points on wall as per SSR specifications, taking down and disposing off old earthing complete all as specified and as directed

Notes for serial item No. 116 & 117: (i) The cost of copper / GI earth continuity wire with GI pipe 50mm medium grade upto 7.5m is deemed to be included (ii) The earth chamber to be constructed 0.5m from edge of earth pit with necessary watering arrangement. The cost for the same is deemed to be included in above item (iii) Earthing shall produce desired earth resistance values as directed by the Engineer-in-charge (iv) The earth resistance shall be as desired by the installation. A guarantee for 3years of this criterion on a Rs. 100 stamp paper shall be given by the Contractor. The quoted rate shall be deemed to be inclusive of this aspect

R D Bansal

M/S Sonu Traders

Esha Engineers