REPAIRS MAINTENANCE OF LIGHTENING ARRESTER AVIATION OBSTRUCTION LIGHTS SOLAR EQUIPMENTS WITH ALLIED WORKS

Amount

Material and labour in repairs for maintenance free chemical earthing with following specification as follows complete all as specified and as directed:- (a) Copper electrode of 50mm outer dia with wall thickness minimum 2mm, not less than 3m length including copper strip of size 50 x 6mm minimum 2m long duly connected with copper electrode. (b) Fixing of copper earth electrode by drilling/ boring 175mm dia hole 5m deep in any type of strata, placing electrode along with extention earth strip 50 x 6mm 2 m long and mixing earthing soil resitivity improvement compound Gel/powder (Terralon) min 10kg per bore and 75kg soil resistivity improvement compound (Electrodite) mixing homogeneously as per manufacturer instruction. (c) FRP display board of size 254 x 380mm made out of plastic material showing type of earthing, earthing result, due date of testing duly fixed with 610mm height plastic hollow pipe of 20mm dia as directed.

(d) Earthing pit in PCC 1:2:4 type B-1 of internal size 300mm x 300mm x 300mm with 120mm thick wall and 700 x 700 x 150mm thick bed concrete and 50mm thick precast chamber cover of RCC 1:2:4 type B1 reinforced with welded steel wire fabric or XPM Jali (weight not less than 4.00 kg/Sqm), complete all as shown in electrical plate No -3 of SSR part - I complete. (e) Contractor must visit the site before quoting the tender to understand the site difficulty and cost for carrying out the job in the station. It is important that contractor should ascertain the quantum of work involved.

Material and labour in repairs for maintenance free chemical earthing having specification as follows complete all as specified and as directed:- (a) GI electrode dual Technology filled with HCC compound using GI electrode of 88mm outer dia of 3m length including GI strip of size 50 x 6mm minimum 2m long connected / welding with GI electrode. (b) Fixing of GI earth electrode by drilling/ boring 175mm dia hole 5m deep in any type of strata, placing electrode along with extention earth strip 50 x 6mm 2 m long and mixing earthing soil resitivity improvement compound Gel/Powder (Terralon) min 10 KG per bore and 75kg soil resistivity improvement compound (Electrodite) mixing homogeneously as per manufacturer instruction. (c) FRP display board 254 x 380mm made out of plasic material showing type of earthing, earthing result, due date of testing duly fixed on 610mm height plastic hollow pipe of 20mm dia as directed.

(d) Earthing pit in PCC 1:2:4 type B-1 of internal size 300mm x 300mm x 300mm with 120mm thick wall and 700 x 700 x 150mm thick bed concrete and 50mm thick precast chamber cover of RCC 1:2:4 type B1 for reinforced with welded steel wire fabric or XPM Jali (weight not less than 4.00 kg/Sqm), complete all as shown in electrical plate No -3 of SSR part - I complete. (e) Contractor must visit the site before quoting the tender to understand the site difficulty and cost for carrying out the job in the station. It is important that contractor should ascertain the quontum of work.

Supply and pouring in repairs earthing soil resitivity improvement compound Gel (Power plus Gel/Terralon) Enhancement compound transparent liquid Gel or black powder in 10 kg packing complete all as specified and directed.

M & L in repairs earthing with copper earth plate electrode 600 X 600 X 3.15mm buried directly in ground (earth pit not less than 2.25m deep below ground level ) with top edge of the earth plate not less than 1.5m below ground level connected to copper strip 25 x 3mm thick for earthing lead fixed by means of nuts,bolt,washers etc.of copper / brass connected to earth test point complete all as specified in electrical plate NO 3 of SSR1996 part 1 ,including necessary excavation and earth work in any strata of soil, GI water pipe 20mm dia.funnel & wire mesh PCC pit with CI cover and frame etc complete all as specified and directed. Note:- Copper strip of size 25 x 3mm upto 7.50m length is deemed to be included in the unit rate quoted. The lenght more than 7.50m will be measured and paid seperately.

M & L in repairs earthing with GI earth plate electrode 600 X 600 X 6mm buried directly in ground (earth pit not less than 2.25M deep below ground level ) with top edge of the earth plate not less than 1.5M below ground level connected to GI strip 25 x 4mm thick for earthing lead fixed by means of nuts,bolt,washers etc of galvanised iron connected to earth test point complete all as specified in electrical plate NO 3 of SSR part 1 ,including necessary excavation and earth work in any strata of soil,GI water pipe 20mm dia, funnel &wire mesh PCC pit with CI cover and frame etc complete all as specified and directed. Note:- GI strip of size 25 x 3mm upto 7.50m length is deemed to be included in the unit rate quoted.

M&L in repairs 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 25 x 3mm copper strip including fixing arrengment like epoxy insulators on wall/pole etc. complete all as specified and directed. Note:- All the joints should be made with brazing to get proper conductivity.

M&L in repairs 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 25 x 4mm GI strip including fixing arrangment like epoxy insulators on wall/pole etc complete all as specified and directed. Note:- All the joints shall be made with welding to get proper conductivity.

Supply and fixing in repairs air termination single pointed aluminium rod 12mm dia and 300mm long complete all as specified and directed.

Supply and fixing in repairs air termination single pointed copper rod 12mm dia and 300mm long complete all as specified and directed.

M&L in repairs test point termininal block made of gun metal or phosphorus bronze size 75 x 75 x 25mm drilled and screwed including 3 Nos 8mm dia 25mm long hex head screw complete all as specified and directed.

Supply and pouring Magnesium Sulphate complete all as specified and directed.

Excavation in trenches in soft/loose soil not exc. 1.5m wide and not exc. 1.5m in depth and getting out for taking up / laying under ground electric cable or for pole etc complete all as specified and as directed. Note :- Mechanical excavation is not allowed in this Stn. Hence only manual excavation is allowed and the rate shall be quoted accordingly.

Returning, filling in, including spreading levelling watering and well ramming in layers not exceeding 25cm in depth in soft / loose soils complete all as specified and as directed.

Removing surplus soils to a distance not exceeding 50m and depositing where directed at a level not exc. 1.5m above the starting point all complete all as specified and directed.

Demolition of old unserviceable earth pit chamber and providing PCC earthing pit in PCC 1:2:4 type B-1 of internal size 300 x 300 x 300mm with 120mm thick wall and 700 x 700 x 150mm thick bed concrete and 50mm thick precast chamber cover of RCC 1:2:4 type B1 for reinforced with welded steel wire fabric or XPM Jali (weight not less than 4.00 kg/Sqm), complete all as shown in electrical plate No -3 of SSR part - I complete all as specified and directed.

Supply and fix in repairs epoxy insulators suitable for fixing of copper / GI strip 25 x 3mm including fixing accessories like screws plastic plugs etc complete all as directed.

Supply and fix in repairs tube medium grade, galvanised with all fittings and fixed complete to wall and ceiling or laid in floors of size 15mm dia laid in trenches complete all as specified.

Supply and fix in repairs tube medium grade, galvanised with all fittings and fixed complete to wall and ceiling or laid in floors of size 20mm dia laid in trenches complete all as specified.

Supply and fix in repairs tube medium grade, galvanised with all fittings and fixed complete to wall and ceiling or laid in floors of size 40mm dia laid in trenches complete all as specified.

M&L cutting of existing GI tube 40mm bore for making new connection inserting unequal Tee 40x40x25mm bore complete all as specified.

M&L in repairs gun metal globe or gate valve with iron wheel head, screwed both ends for iron pipe and fixed of size 20mm dia complete all as specified.

S&F in repair bib taps cast copper alloy with crutch or butterfly handle screwed down screwed for iron pipe or for brass ferrule and fixed of size 15mm bore complete all as specified.

Supply and fix in replacement on existing high mast pole / Bldg integral LED aviation light luminaries comprising of die cast aluminium housing with red polycorbonate dome for better illuminination supper flux 5mm 302 Nos LEDs IP 65 protection against short circuit and surge with input operating votage range 100 - 270 Volts AC supply complete all as per Bajaj cat part No BGAV 302 LED or equivalent in other makes and as directed.

Supply and fix in replacement brass NRV 20mm bore suitable for solar water heater complete all as specified and as directed.

Supply and fix in replacement stainless steel pipe 20mm dia 2m long including fittings from solar panel to tank complete all as specified and as directed.

Supply and fix in replacement hot water pipe duly insulated with glass wool and aluminium cladding of size 25mm bore complete all as specified and as directed.

Supply and fix in replacement brass nipple suitable for solar panel of size 20mm bore complete all as specified and as directed.

Supply and fix in replacement Flat plate solar collector panel of capacity 200 ltr capacity having alluminium alloy frame, layer plating black chrome absorptance 95% emittance 10% with 4mm thick toughned glass cover board, heat conservation rock cotton (Back) polythene (side), 0.5mm galvonised back board, ordinary TXT coating absoptance 93% emittance 45% - 50%, plating chrome coating absorptance 95% - 96% emittance 10% complete all as specified and as directed.

Supply and fixing in replacement storage type solar water tank having multi port connections for electric backup water heaters and solar water heating system suitable for single and double collector of capacity 200 ltr complete all as specified and as directed.

Supply and fixing in replacement heating element any size, shape of capacity 4.5 KW 230 volt AC supply for solar water heater storage tank complete all as specified and directed.

Supply and fix in replacement Thermostat of capacity suitable for 4.5 KW 230 volt AC supply for solar water heater storage tank any size/shape complete all as specified and as directed.

Supply and laying in replacement CPVC pipes SDR 11 and plain CPVC SDR 11 fittings on wall/ceiling or laying in floores of size 20mm dia complete all as specified and as directed.

Supply and laying in replacement CPVC pipes SDR 11 and plain CPVC SDR 11 fittings on wall/ceiling or laying in floores of size 25mm dia complete all as specified and as directed.

M&L Painting with two coats of synthetic enamel paint over a coat of red oxide primer including cleaning the surface of angle iron frames/stands of solar water heating system (tank stand and solar panel stand etc) of capacity 200 ltr complete all as specified and as directed.

BKR Enterprises