ARMO works of EandM Installations at Madurai Airport during 2021 2022. SH Minor Electrical Repairs in operational area, Madurai Airport

Amount

Supply & Fixing of 6mm thick M.S. powder coated cover plate suitable for 330mm dia CI transformer housing box having 6 nos of M10 tapped holes.

Supply & Fixing of rubber Gaskets suitable for 330mm dia CI transformer housing box.

Supply of M10 size stainless steel bolts of 25mm length with spring & plain washers.

Earthing with GI earth pipe 4.5m long , 40 mm dia "B" class including accessories, and providing masonary enclosure of opening 400mmx 400mm with heavy duty cover plate including locking arrangement and watering pipe etc with charcoal/coke and salt complete as required.

Providing and laying earth connections from earth electrode with 6 SWG dia G.I. wire in 15 mm dia G.I. pipe from earth electrode as required.

Dismantling of existing damaged CI transformer boxes embedded in cement concrete with suitable machine tool including removing the series isolating transformers & its cables and making the site clean etc as required.

Installation of CI transformer housing box of height 450mm with a base concrete of 1:3:6 of size 630X630X100 mm thick, all round concrete of 1:2:4 150mm thick, top sloped with 1:2:4 cement concrete including excavation, disposal of material within 20 mtrs lead ,providing and fixing 300mm long 15mm dia "B" class GI pipe with checknut for drainage of water etc complete as required.

Providing and laying in position cement concrete 1:3:6 (1cement : 2 coarse sand : 6 graded stone aggregate 20 mm nominal size) of size 1ft x 1ft with an average thickness of 100mm around the Transformer housing Boxes /Earth pit chambers including top sloping the protruded portion of CI box/Earth pits with graded surface. This job also include Surface dressing, leveling ,watering, ramming, and finishing the surface as required.

Providing & laying in position cement concrete of 1:2:4 with 20mm stone aggregate at required places in operational area.

Retrieving of existing 5 KV grade Airfield cables upto 16Sqmm from the underground trench which includes excavation of earth, removing of brick protection & cable , refilling the trench and restoring the surface etc as required.

Retrieving of existing 1.1KV grade power cables upto 240 Sqmm from the underground trench which includes excavation of earth, removing of brick protection & cable , refilling the trench and restoring the surface etc as required.

Laying of 50mm dia HDPE pipe / DWC HDPE pipe direct in ground below 75cm in all types of soil including excavation and refilling the trench but excluding sand cushioning and protective covering etc complete as required.

Laying of 110mm dia HDPE pipe / DWC HDPE pipe direct in ground below 75cm in all types of soil including excavation and refilling the trench but excluding sand cushioning and protective covering etc complete as required.

Laying of one number PVC insulated and PVC sheathed /XLPE power cable of 5 KV grade of size not exceeding 25 sqmm in the existing RCC/HUME/STONEWARE/METAL/HDPE/DWC pipe as required.

Laying of one number PVC insulated and PVC sheathed /XLPE power cable of 1.1 KV grade of size not exceeding 35 sqmm in the existing RCC/HUME/STONEWARE/METAL/HDPE/DWC pipe as required.

Laying of one number PVC insulated and PVC sheathed /XLPE power cable of 1.1 KV grade of size 185 sqmm to 400 sqmm in the existing RCC/HUME/STONEWARE/METAL/HDPE/DWC pipe as required.

Supplying and making straight through joint with cast resin compound including ferrules and other jointing materials for following size of PVC insulated and PVCsheathed / XLPE aluminium conductor cable of 1.1 KV grade as required. 2Cx25 Sqmm.

Supplying and making straight through joint with cast resin compound including ferrules and other jointing materials for following size of PVC insulated and PVCsheathed / XLPE aluminium conductor cable of 1.1 KV grade as required. 3.5C x35 Sqmm.

Supplying and making straight through joint with cast resin compound including ferrules and other jointing materials for following size of PVC insulated and PVCsheathed / XLPE aluminium conductor cable of 1.1 KV grade as required. 3.5C x185 Sqmm.

Supplying and making straight through joint with cast resin compound including ferrules and other jointing materials for following size of PVC insulated and PVCsheathed / XLPE aluminium conductor cable of 1.1 KV grade as required. 3.5C x240 Sqmm.

Supplying and making straight through joint with cast resin compound including ferrules and other jointing materials for following size of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required. 4C X 16sqmm.

Providing 1:2 cement mortar all around the protruding portion of CI box, upto 15cm with proper sloping with average thickness upto 5cms

K.S.ELECTRICALS