REPAIRS, MAINTENANCE OF LIGHTENING ARRESTER, AVIATION OBSTRUCTION LIGHTS, SOLAR EQUIPMENTS WITH ALLIED WORKS AT AFS THANJAVUR

Amount

Material and labour for maintenance free chemical earthing comprising of 01 No of chemical earthing have specification as follows:- (a) Copper electrode of wall thickness minimum 2mm not less than 3 mtr length with not less than 50mm outer dia including copper strip of size 50 x 6mm minimum 2m long connected with 50mm dia 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 earthing display board 254 x 380mm made out of plasic material showing information related to type of earthing, earthing result, due date of testing along with fixing size 610mm height made of plastic hollow pipe of 20mm dia.

(d) PCC earthing pit in PCC 1:2:4 type B-1 of internal size 300mm x 300mm x 300mm with 120mm thick wall and 700mm x 70mm x 150mm thick bed concrete and 50mm thick precast chamber cover of RCC 1:2:4 type B1 for reinfoced 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 difficulty and cost for carrying out the job in the station. It is important that contractor ascertain the quontum of work.

Material and labour for maintenance free chemical earthing comprising of 01 No of chemical earthing have specification as follows:- (a) GI electrode duel Technology filled with HCC compound not less than 3m length with not less than 88mm outer dia including GI strip of size 50 x 6mm minimum 2 mtr long connected / welding with 89mm dia 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 mts 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 earthing display board 254 x 380mm made out of plasic material showing information related to type of earthing, earthing result, due date of testing along with fixing size 610mm height made of plastic hollow pipe of 20mm dia.

(d) PCC earthing pit in PCC 1:2:4 type B-1 of internal size 300mm x 300mm x 300mm with 120mm thick wall and 700mm x 70mm x 150mm thick bed concrete and 50mm thick precast chamber cover of RCC 1:2:4 type B1 for reinfoced 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 difficulty and cost for carrying out the job in the station. It is important that contractor ascertain the quontum of work.

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

M & L for providing 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 and necessary excavation and earth work in any strata of soil, GI water pipe with 20mm dia.funnel & wire mesh PCC pit with CI cover and frame etc all as specified and directed.

M&L 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 insulatos on wall/pole etc. all as specified and directed. Note:- All the joints should be made with brazing to get proper conductivity.

M&L 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 alluminium strip including fixing arrangment like epoxy insulators on wall/pole etc. Note:- All the joints shall be made with welding to get proper conductivity.

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

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

M&L 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 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 70 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 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 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 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 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.

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 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 pole solar all in one smart integrated street light 12 watt without hybrid switch with built in mono crystalline panel 20wp, lithiumion battery (LiFePO4) 9 AH MPPT charge controller and PIR Sensor with colour temp 6000 to 6500K having autonomy 3 days including fixing arrengmentcomplete all as per Bajaj 12W all in one standard or equivalent in other makes and as directed.

Supply and fix in replacement on existing high mast pole / Bldg integral LED aviation light luminaries comprising of die cast aluminium housing with red polycarbonate dome for better illumination super 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 coservation rock cotton (Back) polythene (side), 0.5mm galvonised back board, ordinary TXT coating absorption 93% emission 45% - 50%, palting chrome coating absorption 95% - 96% emission 10% complete all as specified and as directed.

Supply and fixing in replacement storage type solar water tank having mult 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.

D Subramani and Sons

SUPER COOL