REPAIRS TO LIGHTENING PROTECTION SYSTEM AND EARTHING SYSTEM OF EQUIPEMENTS INSTALLED IN TECHNICAL AND DOMESTIC BLDGS OTHER THAN WSA AT AF STN CHANDIGARH.

Amount

M&L in replacement for earthing complete with galvanised steel earth plate electrode 600mmx 600mm x 6mm thick buried directly in ground vertically (earth pit not less than 2.25m deep below ground level) with top edge of the plate not less than 1.5mtr below normal ground level, earth plate surrounded from all sides by 15cm thick packed alternate layers of charcoal dust and common salt, electrode connections using galvanised iron strip of size 25mm x 4mm thick (upto body of equipment) by means of bolts, nut check nuts and washers earth strip protected by galvanized steel pipe 40mm bore (medium grade) connected to test point all as shown in electrical plate No. 3 of SSR - 2009 (Part-I) and including necessary excavation and earth work in any type of soil, 20mm bore medium grade GI pipe for watering, funnel with wire mesh, PCC (1:3:6), type C-1 chamber shall be constructed 500mm away from the edge of earth pit, pit cover of precast RCC (1:1½:3), type B-1, 80mm thick reinforced XPM of weight not less than 4 Kg/ Sqm. complete & connected to earthing test point all as specified or indicated including brazing/ testing on completion complete all as specified and directed. Notes:- (i) The unit rate includes galvanised Iron strip and protection pipe upto (maximum 7.5 metre from earth plate) earth point/ test point. (ii) Old earthing may have been burried down to a depth of exceeding 2.25m below ground level. No extra payment will be made if excavation is done beyond 2.25m depth to retrieve the old earthing.

M&L in replacement for earthing complete with galvanised steel earth plate electrode 600mmx 600mm x 6mm thick buried directly in ground vertically (earth pit not less than 2.25m deep below ground level) with top edge of the plate not less than 1.5mtr below normal ground level, earth plate surrounded from all sides by 15cm thick packed alternate layers of charcoal dust and common salt, electrode connections using galvanised iron strip of size 32mm x 6mm thick (upto body of equipment) by means of bolts, nut check nuts and washers earth strip protected by galvanized steel pipe 40mm bore (medium grade) connected to test point all as shown in electrical plate No. 3 of SSR - 2009 (Part-I) and including necessary excavation and earth work in any type of soil, 20mm bore medium grade GI pipe for watering, funnel with wire mesh, PCC (1:3:6), type C-1 chamber shall be constructed 500mm away from the edge of earth pit, pit cover of precast RCC (1:1½:3), type B-1, 80mm thick reinforced XPM of weight not less than 4 Kg/ Sqm. complete & connected to earthing test point all as specified or indicated including brazing/ testing on completion complete all as specified and directed. Notes:- (i) The unit rate includes galvanised Iron strip and protection pipe upto (maximum 7.5 metre from earth plate) earth point/ test point. (ii) Old earthing may have been burried down to a depth of exceeding 2.25m below ground level. No extra payment will be made if excavation is done beyond 2.25m depth to retrieve the old earthing.

S&F in repairs porcelain/ epoxy insulators of size approximate 50mm x 25mm x 25mm for fixing of roof/ down conductor complete with fixing screws etc. dully fixed in wall/ roof with PVC rawl plugs and fixing screws complete all as directed.

M&L for replacement of aluminium strip 25mm x 3mm for roof conductor and down conductor above ground complete all as specified and directed.

Supply and fixing in replacement 32mm x 6mm GI strip earth continuity conductor or main earthing lead fixed to wall on insulators or burried in ground or fixed to poles or any other situation as required complete all as specified and directed. Note : Insulators shall be measured and paid separately under respective items.

M&L for replacement of copper strip 20mm x 3mm for roof conductor and down conductor above ground complete all as specified and directed.

Supply and fixing in replacement 25mm x 4mm GI strip earth continuity conductor or main earthing lead fixed to wall on insulators or buriedin ground or fixed to poles or any other situation as required complete all as specified and directed. Note : Insulators shall be measured and paid separately under respective items.

Note for item No. 4.00 to 7.00: Quoted unit rates shall be deemed to include for drilling of holes in the strip including provision of nuts, bolts, washers etc. required for jointing and no extra payment shall be made on this account.

Supply and fixing in replacement 12mm dia, 300mm long end termination aluminium rod fitted with rivets/ nuts & bolts on and including 32mm bore medium grade GI pipe 1.20m long duly grouted in PCC block of size 300mm x 300mm x 450mm built in PCC (1:3:6) type C-2 using graded stone aggregate complete all as specified and directed.

M&L for MS work as in repairs electrical panel doors fabricated from MS sheet as per existing gauge /size and shape and fixed with hinges by properly welding and checking for proper closing and opening complete all as specified and directed.

M&L for preparation of new steel surface of electrical panel doors and applying two coats of synthetic enemel paint over a coat of red oxide primer complete all as specified and directed.

M&L for refixing existing panel doors by welding the hinges with panel body properly and fixing the panel door with hinges by welding or as per existing arrangements and checking for proper opening and closing of the door all as directed. Note: Repairing and refixing of one door panel fitted with 2/3 hinges shall be considered as one job. Any small piece of MS sheet of thickness 2/3mm required for repairing the portion of the door to be fixed with hinges and replacing any damaged MS hinge shall be deemed to be included in the unit rate quoted.

M&L for complete removal of existing paint from panel doors by paint removers or burning off by blow lamps and cleaning with scrapers and applying two coats of synthetic enameled paint over a coat of red oxide primer complete all as specified and directed.

Earthing complete with galvanised copper earth plate electrode 60cm x 60cm x 3.15mm thick buried directly in ground (earth pit not less than 2.25 Mtr deep below ground level ) with top edge of the plate not less than 1.5 Mtr below normal ground level, connected to copper earth lead strip 20mm x 3mm by means of bolts, nuts, check nuts and washers of GI or steel all as shown in electrical plate No. 3 of SSR Part-I connected to earthing test point all as specified or indicated and testing on completion as directed by the Engineer-in-Charge including necessary excavation & earth work in any type of soil, funnel, PCC chamber (1:3:6) type C-1, pit cover of precast RCC (1:1½:3) type A-1 using graded stone aggregate & reinforced with XPM weighing not less than 4 kg/ sqm and frame, charcoal, salt including earth lead protected by 40mm dia medium grade GI pipe and 20mm dia medium grade GI Pipe for watering including dismantling existing earthing complete all as specified and directed. Note:- Copper earth lead strip 20mm x 3mm and GI 40mm dia protection pipe upto 7.5 mtr length will be deemed to include in the unit rate quoted. Old earthing shall be conventional type and may have been burried down to a depth of exceeding 2.25m below ground level. No extra payment will be made if excavation is done beyond 2.25m depth to retrieve the old earthing.

Supply and fix in replacement LED street light fitting 90 watts, 230 volts AC outdoor type with high pressure die cast aluminium housing and heat resistant complete with driver, lamp, bracket with impact and corrosion resistant including thermal management for multiple optics complete with IP 65/ 66 protection complete all specified and directed.

Supply and fix in replacement LED street light fitting 150 watts, 230 volts AC outdoor type with high pressure die cast aluminium housing and heat resistant complete with driver, lamp, bracket with impact and corrosion resistant including thermal management for multiple optics complete with IP 65/ 66 protection complete all specified and directed.

Supply & replacement of energy saving LED flood light 200 watt capacity high pressure die cast aluminium housing with seal toughened glass cover, light source should be multi LED SMD array with individual secondary lenses, colour temperature 6000K, 500(±) system efficiency should be minimum 110 lumen/ watt and minimum system lumen package of 6000 lumen as LM 79 IP-66 THD less than 10%, surge protection minimum 5 KV with flash indication, driver should be potted/ CE certified/ R certified and driver efficiency 85% including making connection complete all as specified and directed.

Supply, laying, jointing and testing LT XLPE cable insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 volts grade with stranded aluminium conductor of size 95 sqmm 3½ core laid in trenches/ passing through GI tubing etc. including taking out existing LT XLPE cable complete as specified and directed.

Supply, laying, jointing and testing LT XLPE cable insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 volts grade with stranded aluminium conductor of size 70 sqmm 3½ core laid in trenches/ passing through GI tubing etc. including taking out existing LT XLPE cable complete as specified and directed.

Supply, laying, jointing and testing LT XLPE cable insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 volts grade with stranded aluminium conductor of size 50 sqmm 3½ core laid in trenches/ passing through GI tubing etc. including taking out existing LT XLPE cable complete as specified and directed.

Supply, laying, jointing and testing LT XLPE cable insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 volts grade with stranded aluminium conductor of size 35 sqmm 3½ core laid in trenches/ passing through GI tubing etc. including taking out existing LT XLPE cable complete as specified and directed.

M&L for installation, testing and commissioning of maintenance free chemical earthing using 40mm dia 3.00m long GI earthing electrode capsule and comprising the following including dismantling of old conventional earthing complete all as specified and directed:- (a) Making a hole of 150mm dia to a depth of 3.50m below ground level and placing earthing electrode inside the hole. (b) Filling back fill earth enhancing compound of superior quality (Qty approx 50Kg) properly mixed with water all around the earthing electrode. (c) Continuously compacting the back filling compound to form a uniform mixture all around the earthing electrode. (d) Construction of brick masonry earth pit of internal size 30cm x 30cm x 30cm with half brick thick wall including 15mm thick internal plaster in cement mortar (1:4) finished even and smooth and providing CI cover with frame over the pit. (e) Testing the earthing for earth resistance. Earth resistance should not be less than 5 Ohm. In case the test results are not found below 5 Ohm, complete earthing shall be re-done without any extra cost to the Govt. Note:- Old earthing shall be conventional type and may have been burried down to a depth of exceeding 3.50 below ground level. No extra payment will be made if excavation is done beyond 3.50 depth to retrieve the old earthing.

M&L for replacement of test point terminal block of gun metal or phosphorus bronze of size 75mm x 75mm x 25mm drilled and screwed including 3 No. 8mm dia 25mm long hexagonal head screws complete all as specified and directed.

S&F in repairs earthing pit indicator made out of 3mm thick MS sheet of size 300mm x 200mm with 25mm x 4mm angle iron stand 600mm long, duly painted with two coats of synthetic enameled paint over a coat of red oxide primer and writing work in capital letters & numbers fixed in and including PCC (1:4:8) block of size 30cm x 30cm x 30cm complete all as specified and directed.

Cleaning the earth pit from inside and outside upto 01 mtr radius all around by removing vegetable grass, shrubs etc. and dressing the soil complete all as specified and directed.

Excavation in trenches in soft/ loose soil not exceeding 1.5 mtr wide and not exceeding 1.5 mtr in depth for foundation of pole, laying of cable etc. and getting out complete all as specified and directed.

Returning and filling in excavated soil in layer not exceeding 25cm thick in including spreading, levelling, watering and well ramming in soft/ loose soil complete all as specified and directed.

Removing excavated surplus soil to a distance not exceeding 50 mtrs and depositing where directed at a level not exceeding 1.5mtrs above the starting points complete all as specified and directed.

M&L for sand cushioning to cables with a layer of sand 8cm deep before laying the cable and 15cm depth after laying & stretching of cable) complete all as specified. Note: Punned thickness overall 18cm shall be measured & paid.

Supply and laying old size sub class ‘B’ bricks as in protection of cable laid dry flat perpendicular to direction of cable abutting each other complete all specified and directed.

M&L in replacement for PCC block of size 300 x 300 x 300 mm using with 1:2:4 type B-1 using 20 mm graded stone aggreegate complete all as directed

M&L in replacement for PCC block of size 150 x 150 x 150 mm using with 1:2:4 type B-1 using 20 mm graded stone aggreegate complete all as directed.

M&L for submain wiring complete with two runs of 4.0 sqmm single core, multi-stranded, FRLS PVC insulated unsheathed cable 1100 volts grade with copper conductor, drawn through existing surface/concealed conduits with one run of 4.0 sqmm PVC insulated unsheathed copper conductor cable as earth continuity conductor and connecting to common earth dolly including taking down existing submain wiring complete all as specified. Note: Two runs of 4.0 sqmm multi-stranded cable and one run of 4.0sqmm cable as earth continuity conductor shall be considered as one unit length.

M&L for submain wiring complete with two runs of 2.5 sqmm single core, multi-stranded, FRLS PVC insulated unsheathed cable 1100 volts grade with copper conductor, drawn through existing surface/concealed conduits with one run of 2.5 sqmm PVC insulated unsheathed copper conductor cable as earth continuity conductor and connecting to common earth dolly including taking down existing submain wiring complete all as specified. Note: Two runs of 2.5 sqmm multi-stranded cable and one run of 2.5sqmm cable as earth continuity conductor shall be considered as one unit length.

S&F in replacement of MCCB, 3 pole, 100 Amps, 25 KA, 50Hz, 415 volts complete all specified and directed.

S&F in replacement of MCCB, 3 pole, 63 Amps, 25 KA, 50Hz, 415 volts complete all specified and directed.

S&F in replacement of MCCB, 4 pole, 200 Amps, 35 KA, 50Hz, 415 volts complete all specified and directed.

S&F in replacement of MCCB, 4 pole, 250 Amps, 35 KA, 50Hz, 415 voltscomplete all specified and directed.

Supply of copper sulphate (CuSO4) and pouring into earth pit after mixing with water complete all as specified and directed.

Supply of magnesium sulphate (MgSO4) and pouring into earth pit after mixing with water complete all as specified and directed.

Supply of common salt and pouring into earth pit after mixing with water complete all as specified and directed. Note for item No. 39.00 to 40.00:- Excavation/ earth work required for filling the above items shall be deemed to be included in the unit rate quoted and no extra payment will be made on this account.

M&L for dismantling existing damaged earthing pit chamber and construction of new earth pit in PCC (1:3:6) Type C-1 using graded stone aggregate including provision of funnel with wire mesh all as shown in electric plate No. 3 complete all as specified and directed. Note: Cover for earth pit will be measured and paid for separately.

M&L for replacement of earthing pit cover of size 60cm x 60cm x 8cm thick casted from RCC (1:1½:3) type A-1 using graded stone aggregate reinforced with 8mm dia TMT bars @ 100mm c/c including provision of two No. 200mm long lifting handles of 10mm dia round bars complete all as specified and directed.

M/s badrinath Traders (BID ID -3136057)

Royal Engineers (BID ID -3127527)

Jai Maa Electrical Works (BID ID -3136778)

SANJEEV ENTERPRISES (BID ID -3127824)

MANSA ENTERPRISES (BID ID -3128394)

PARTAP ENGINEERING WORKS (BID ID -3127791)