REPAIR / REPLACEMENT OF CONVENTIONAL EARTHING / CHEMICAL EARTHING, BRAZING WORK OF STRIP, REPLACEMENT OF UNSV SPDs ETC ALONGWITH CERTAIN ALLIED WORKS AT 901 SU AIR FORCE STATION NATHATOP UNDER GE (AF) UDHAMPUR

Amount

M&L for Checking of Earth Resistance of Chemical/Normal Earthing No.185 (approximate) complete all as specified and directed by Engr-in-Charge. NOTE :- (a) Contractor will Check Earth Resistance of test points and will be recorded in Register, same will be put up to the Engineer-in-Charge through JE E/M. (b) New Earth Resistance Tester will be provided by the Contractor. (Tester should be caliberated from NABL accredited labs). (c) Contractor will be responsible for pouring of water in the Earth Pits Weekly at his own arrangement with Water Tanker, etc. However, Water will be provided by the Department. (d) Checking of Earth Pits existing and improve it by watering, adding of chemical etc. (Chemical will be measured and paid separately) (e) Contractor will be responsible for marking of Earth Check date and due date on existing Plate with paint as specified by Engineer-in-Charge. (f) Contractor will be responsible for cleaning of bushes, grass, sand etc inside and all around upto 1.50 Metre Area of existing Earth Pit with tightening of Strip. (g) Repair Party will be reported every Morning and Evening to JE E/M. (h) Cost of register for noting earthing results, location wise shall deemed to be included with the unit rate. Proforma of detail column will be printed as per the direction of Engineer-in-charge. (j) The contractor is responsible for mainting the value of chemical earthing as per station norms as directred by Engr-in-Charge. (k) Grid of any no of earth pits having one test point shall be considered as one point for measurement. (k) Recovery for Penalty will be made as follows :- (i) Earthing left without Checked lesser by 25 No. - Rs. 50.00/Earthing (ii) Earthing left without Checked in a Month - Rs. 100.00/Earthing (iii) Earthing left without Cleaning in a Month - Rs. 50.00/Earthing (iv) Earthing left without Watering in a Month - Rs. 30.00/Earthing

M&L for replacement Maintenance Free UL approved Copper Bonded Earth Rod of 10 Feet length 17.2mm dia made of High Tensile Low Carbon Steel Rod, molecularly bonded with 99.9% Electrolyte Grade Copper on outer surface (minimum copper bonding thickness-250 microns) jointed with Copper Bus Bar of size 50x6x200mm with Exothermic joint, complete all as specified and as directed.

M&L for supply and pouring of RoHS tested Earth Enhancement Compound after mixing with water tested by NABL accredited lab in compliance to IEC 62561-7 with a resistivity < 0.12 ohm-m. It shall be free from bentonite and other hazardous substances. It shall be a permanent, non-corrosive material and will not leach any chemicals into the ground. It shall retain moisture even in high soil resistivity areas. complete all as specified and as directed. Note: Measurement of Chemical will be done in Powder form.

M&L for supply and fixing of Earth Pit 125 mm dia with FRP Earth Pit Cover of top size 200x200mm bottom size 300x300mm with height of 150mm with lockable Lid, Earth Pit cover shall be made of Poly plastic tested at 7.5 ton load for closing of earth pits complete all as specified and as directed.

M&L for replacement of Earthing with Galvanised Earth Plate Electrode 600x600x6 mm thick burried directly in Ground (Earth Pit not less than 2.25 Metre below Ground Level) with Top edge of the Plate not less than 1.50 Metre connected to GI strip 32 x 6 mm size and earthing lead protected with 50 mm bore GI pipe, light grade, filling around with charcoal dust and salt including excavation, returning, filling of earth and disposal of surplus soil to a distance not exceeding 50 mtr and connected to GI strip by means of GI nuts, bolts and washers strip connected to earth plate including necessary excavation and earth work in any type of soil so as to achieve earth resistance including excavation of polypit chamber with polyplastic pit cover (cost of polypit chamber with polyplastic pit cover shall be deemed to be included in the rate quoted) complete all as specified and as directed by Engineer-in-Charge including dismantling of existing unserviceable earthing.all as shown in Electrical Plate No. 3 of MES Schedule Part-I complete all as per specified and as directed by Engr-in-Charge.

Taking down old unserviceable of earthing system and in replacement of Earthing complete with copper earth plate electrode of size 60cm x 60cm x 5mm buried directly in ground vertically at a depth not less than 3.50 metre below normal ground level with top edge of earth plate at a depth not less than 3.5 metre below normal ground level surrounded from all sides by 15 cm thick and packed alternate layer of common salt and charcoal and a top layer of copper sulphate 150 mm thick all as specified and as directed with and including bringing of mother soil from outside for filling holes, including Copper strip of size 32 x 6mm by means of nuts, bolts and check nuts, washers of copper up to main board/test point or as required including necessary excavation and earth work in any type of soil so as to achieve earth resistance below 3 Ohms including excavation of polypit chamber with polyplastic pit cover (cost of polypit chamber with polyplastic pit cover shall be deemed to be included in the rate separated quoted) complete all as specified and as directed by Engineer-in-Charge including dismantling of existing unserviceable earthing. Notes : (a) Copper strip beyond test point shall be measured and paid for separately. (b) Earthing resistance result shall be less than 5 Ω .If the result comes more than 5 Ω the contractor shall carry out the earthing at separate location/site given by the Engr-in-Charge after taking out of earth electrode without any extra cost to the deptt. (c) Test point terminal block shall be measured and paid for separately. (d) The contractor's quoted rates shall be deemed to include for dismantling/taking down of old unserviceable earthing of any type and making good the disturbed surfaces and nothing extra shall be admissible on this account. (e) Any other fittings/fixtures if technically required for achieving desired results (if not included above) shall be provided by the contractor without any extra cost to the Govt. (f) If mother soil is not available then mother soil wil be provided by contractor from outside source without any extra cost to the Govt.

M&L for replacement of Pre-cast RCC Cover with Handle 2 Nos and hole of dia 40mm in Cement Concrete 1:2:4 (20mm graded stone aggregate) of size 540x540x60mm, reinforced with and including 10mm dia TMT Bars @ 250mm Centre to Centre in both ways, complete all as specified and as directed.

M & L for cement concrete 1:2:4 (20 mm graded stone aggretage) provided around PCC Earthing Pit Chamber of platrform 450 x 450 x 100 mm with fair finished concrete surfaces including necessary formwork and earth work as required/ordered at site, complete all as specified and as directed.

Dismantling the existing earthing pit chamber made of PCC 1:2:4 type B-I (using 20 mm graded crushed stone aggregate) and cleaning the area including removal of broken PCC/excavated material all as specified and as directed by Engr-in-Charge.

M&L for Taking out loose/displaced Serviceable Aluminium Strip/ Copper Strip/ GI Strip of any size and any description with Accessories and refixing the same with necessary Fixing Arrangement like Screws, Saddles, Nuts and Bolts, complete all as specified and as directed. NOTE : Cost of Screws, Saddles, Nuts and Bolts of copper/brass, etc. will deemed to be included in the Quoted Unit Rate.

M&L for replacement of Galvanised Iron Strip 32x6mm with Saddles and fixing Screws for Roof/Earth Conductors and Down Conductors, complete all as specified and as directed.

M&L for replacement of Aluminium Strip 25x3.15mm with Saddles and fixing Screws for Roof/ Earth Conductors and Down Conductors above Ground, complete all as specified and as directed.

M&L for replacement of Copper Strip 20x3mm with Saddles and fixing Screws for Roof/ Earth Conductors and Down Conductors above Ground, complete all as specified and as directed.

M & L for replacement of Copper strip 32 x 6 mm with saddles and fixing screws etc for Roof/Earth Conductors and Down Conductors above ground to interconnect the earth pit to equipment room, all as specified and directed.complete with saddles and fixing screws for fitting the strip.

Material and labour for Copper plate of size 60 cm x 60 cm x 3.15 mm complete all as specified and directed by Engr-in-Charge.

M&L for replacement of 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 as directed.

M&L for replacement of Galvanised Iron Tubing/Pipe 25mm bore (dia), light grade for wire Protection, fixed in Walls/Floors with suitable type of Clamps and proper fixing of inculator,scews up to 15 mtr building height etc., complete all as specified and as directed.

M&L for replacement of Galvanised Iron Tubing/Pipe 40mm bore (dia), light grade for wire Protection, fixed in Walls/Floors with suitable type of Clamps and proper fixing of inculator,scews up to 15 mtr building height etc., complete all as specified and as directed.

M&L for replacement of Test Point Terminal Block made of Gun Metal or Phosphorus Bronze size 75x75x25mm, drilled and screwed including 3 No. 8mm dia, 25mm long hexagonal Head Screw, complete all as per specified and as directed.

M&L for replacement of Air Termination Single Pointed Aluminium Rod 12 mm dia and 300mm long with Arrester Clamp 12 mm made out of Brass/ Gun Metal /screws nut bolts including provision of Cement Concrete 1:2:4 (20mm graded stone aggregate) Block 300x300x300mm,up to 15 mtr height complete all as specified and as directed.

M&L for replacement of Air Termination Single Pointed Aluminium Rod 12 mm dia and 300mm long with Galvanised Steel Tubing 40mm bore (dia), 1.50 Metre long, light grade with all Fittings with Arrester Clamp 12 mm made out of Brass including provision of Cement Concrete 1:2:4 (20mm graded stone aggregate) Block 300x300x300mm, up to 15 mtr height complete all as specified and as directed.complete all as specified and as directed.

M&L for replacement of Air Termination Single Pointed Copper Rod 12 mm dia and 300mm long with Arrester Clamp 12 mm made out of Brass including provision of Cement Concrete 1:2:4 (20mm graded stone aggregate) Block 300x300x300mm, up to 15 mtr height complete all as specified and as directed.complete all as specified and as directed.

M&L for replacement of Air Termination Single Pointed Copper Rod 12 mm dia and 300mm long with Galvanised Steel Tubing 40mm bore (dia), 1.50 Metre long, light grade with all Fittings with Arrester Clamp 12 mm made out of Brass including provision of Cement Concrete 1:2:4 (20mm graded stone aggregate) Block 300x300x300mm,up to 15 mtr height complete complete all as specified and as directed.

Taking down old unserviceable of any type of marker and Supply and fixing of Earthing identifier marker of 25mm flat iron 5 mm thick length of flat iron 75 cm long which is 60 cm FI above the Ground level and 15 cm length FI below the Ground level and fixed with PCC 1:2:4 (12.5 mm graded aggregate) in post holes and the TOP of the flat iron parabolic/semicirculer/traingular/rectangular shape MS plate 1.6 mm thick of size 30 cm width and 20 cm height to welded/fixing to the flat iron including two coat of synthetic enamel paint over a coat of primer on steel surface cutting for Equipment Earthing/Lighting Earthing/L2 Earthing etc complete all including Earth Plate No/Description of Earthing/Type of Earthing on Plate with white paint including earth plate no and earthing resistance with earthing check date and earthing check due date complete all specified and directed by Engineer in charge.

Taking down air termination copper/Aluminium rod from roof of buildings (serviceable one for reuse) or (unserviceable one for crediting to contractor) from buildings of height upto 15 metres all as specified and directed.

Heavy duty porcelain/poly carbonate insulators of size 32 x 32mm to be fixed on wall/roof/pipe for laying of copper strip as roof/down conductor on building of height between upto 25 metres including nuts & bolts of brass of appropriate size all as specified and as directed by Engr-in-Charge including taking down old unserviceable.

S&F in repair CI funnel made as specified in SSR Part -I electrical plate No 3 fixed with GI pipe of watering by welding or threading etc complete all as specified and as diirected.

Taking down old unserviceable of wire and M&L for Down conductor using 50 sqmm single core copper cable both ends thimbled properly with copper Lugs complete all as specified and directed.

Taking down old unserviceable of wire and M&L for Down conductor using 25 sqmm single core copper cable both ends thimbled properly with copper Lugs complete all as specified and directed.

Taking down old unserviceable of wire and M&L for Down conductor using 16 sqmm single core copper cable both ends thimbled properly with copper Lugs complete all as specified and directed.

M & L for brazing work with copper brazing alloy rod with help of oxygen and LPG cylinder using required copper strip of size 20mm x 3mm upto 30 cm length along with cleaning work of strip with descaling solution/emery paper which are laid as roof/down conductor on any height of building up to 15 mtr building height complete all as specified and directed by Engr-in-Charge.

M & L for brazing work with copper brazing alloy rod with help of oxygen and LPG cylinder using required copper strip of size 25 mm x 3mm upto 30 cm length along with cleaning work of strip with descaling solution/emery paper which are laid as roof/down conductor on any 15 mtr height of building complete all as specified and directed by Engr-in-Charge.

M & L for brazing work with copper brazing alloy rod with help of oxygen and LPG cylinder using required copper strip of size 32mm x 6mm upto 30 cm length along with cleaning work of strip with descaling solution/emery paper which are laid as roof/down conductor on any 15 mtr height of building complete all as specified and directed by Engr-in-Charge.

M & L for brazing work with GI brazing alloy rod with help of oxygen and LPG cylinder using required Galvanised iron of size 20 mm x 3 mm upto 30 cm length along with cleaning work of strip with descaling solution /emery paper which are laid as roof/down conductor on any 15 mtr height of building complete all as specified and directed.

Surge protection device single phase Type 1&2 (SPD) with serviceability indicator single phase with neutral for protection of equipment against lightning and switching surges withdraw able type,of phase description Un 320 volts,Iin 30 kA ,Imax 50 kA ,Iimp 12.5 kA and neutral Uc 255 volts,I imp 25 kA,In 30 kA ,Imax 60 kA including protected IP20 complete all as specified and directed by Engr-in-Charge. Make : Havells/schneider electric/L&T/ABB

Surge protection device (SPD) with serviceability indicator Type 1 &2, 3 phase with neutral for protection of equipment against lightning and switching surges withdraw able type,of phase description Uc 320 volts,In 20 kA ,Imax 50 kA ,Iimp 12.5 kA and neutral Un 255 volts,Iimp 12.5kA kA,In 40 kA ,Imax 70 kA VP < 1.5KV& protected IP20 complete Confiring to IEC/EN 61643-IIcomplete all as specified and as directed by Engineer-in-Charge Make : Havells/schneider electric/L&T/ABB

M&L for surge protection device single phase Type 3 (SPD) with serviceability indicator single phase with neutral for protection of equipment against lightning and switching surges withdraw able type,of phase description Un 275 volts,Iin 5 kA , voc 6kv Imax 10 kA ,Iimp 12.5 kA and neutral Uc 275 volts,I imp 30,voc 6kv kA,In 30 kA ,Imax 60 kA including protected IP20 complete Confiring to IEC/EN 61643-II all complete all as specified and as directed by Engineer-in-Charge Make : Havells/schneider electric/L&T/ABB all as specified

Excavation in trenches not exceeding 1.5 metre wide and not exceeding 1.5 metre in depth for laying of cable and foundation of poles, stays and getting out in any type of soil, all as specified.

Returning filling in including spreading, levelling, watering and well ramming in layers not exceeding 25 cm thick each layer in any type of soil complete all as specified and as directed by Engineer-in-Charge.

Removing surplus excavated material to a distance not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point complete, all as specified and as directed by Engineer-in-Charge.

M & L for brazing work with GI brazing alloy rod with help of oxygen and LPG cylinder using required Galvanised iron of size 25 mm x 3 mm upto 30 cm length along with cleaning work of strip with descaling solution /emery paper which are laid as roof/down conductor on any height of building complete all as specified and directed.

M & L for brazing work with GI brazing alloy rod with help of oxygen and LPG cylinder using required Galvanised iron of size 32 mm x 6 mm upto 30 cm length along with cleaning work of strip with descaling solution /emery paper which are laid as roof/down conductor on any height of building complete all as specified and directed.

Supply Common salt commercial for the earth pit all as specified and directed by Engr-in-Charge.

Supply Charcoal dust for the earth pit all as specified and directed by Engr-in-Charge.

MAHAJAN TRADING CO

DAVINDER SINGH

RANBIR ENTERPRISES

PAWAN KUMAR GOVT. CONTRACTORS

MOHAN LAL AND SONS