Tender For Supply, Erection And Commissioning Of Earthing System At Panchet Dam Area For Dam Lighting And Other Electrical Equipment, Dhanbad-Jharkhand

Supply, Erection And Commissioning Of Earthing System At Panchet Dam Area For Dam Lighting And Other Electrical Equipment - Supply & Erection Of Earthing With 40 Mm Dia. & 3 Metre Long Ms Rod, Including Accessories, And Providing Masonry Enclosure With Cover Plate Having Locking Arrangement And Watering Pipe Etc. With Alternate Layers Of Charcoal And Salt As Required At Four ( 4 ) Locations In The Downstream Side Of Panchet Dam ( As Per Drawing In Annexure- I ) . [ Two No. Of Earth Pits ( Dimension 300Mm X 300Mm X 3M ) Are To Be Provided At Each End Of The Cocrete Portion Of The Dam Having 4M Minimum Distance Between Them, So As To Keep The Value Of Earth Resistance Minimum ] . 2 Downstream Side Of Dam Including Approach Road Of Power House & Colony Except The Concrete Portion: Supplying And Laying 25 Mm X 3Mm Gi Strip At Minimum 0.25 Metre Below Ground Level For Conductor Earth Electrode, Including Connection / Termination With Gi Thimble Etc. As Required At Each Lighting Pole Of Downstream Side Of Dam Except The Concrete Portion ( Total 150 No. Of Poles & Approximate Length Of Path Is 6.0 Km ) [ Laying Of Gi Strip Will Be Carried Out As Per Proposed Picture In Annexure Ii, Excavation Of Soil, Refilling & Compression Of The Same, Cutting Of Cemented Drain & Repairing Of The Same With Proper Finish After Laying Of Strip Is Under The Scope Of Agency ] . 3 Upstream Side & Concrete Dam: Supplying And Laying 25 Mm X 3Mm Gi Strip On Parapet Wall At Upstream Side & Both Side Of Concrete Dam As Per Schematic Attached In Annexure Iii ( A & B ) As Strip Earth Electrode, Including Connection / Termination With Gi Thimble Etc. As Required At Each Lighting Pole / Jb ( Total 120 No. Of Poles & Approximate Length Of Path Is 5Km ) . Clamping Of Gi Strip Is To Be Done At Parapet & Concrete Wall At An Interval Of 1M With 200Mm X 2Mm Gi Strip. Connection Of Earth Strip Of Concrete Area With The Running Earth Strip At Both End Of Concrete Area To Form The Closed Loop Network. 4 Connection Between Running Earthing Strip And Lighting Poles ( 270 No. ) : Supplying Of Materials And Providing Connection Between Running Earthing Gi Strip And Each Lighting Poles ( 270 No. ) Through Welding And Clamping ( As Required To Fix Tightly ) By 25 Mm X 3Mm Gi Strip [ Required Length Of Gi Strip For Each Pole Is 1.5 Mtr. ( Approx. ) ] 5 Providing Earthing To 270 No. Of Lighting Fixtures: Connecting The Earth Wire Of The Fixture To The Gi Strip Of Each Pole By 8 Swg Gi Wire Through A Tb At Existing Jb. ( Supply& Fixing Of The Tb & 8 Swg Gi Wire With Gi Thimble Etc. Properly Ensuring Tightness Will Be Under The Scope Of Agency ) . 6 Supply, Laying & Termination Of 25 Mm X 5Mm Gi Earth Strip From Nearest Running Gi Earth Strip For Providing Double Earthing To 15 No. Of Crest Gate Local Control Panels, 15 No. Of Lt Motors, Two No. Of Bus Bar Panels, Four No. Of Lighting Panels & One No. Of Remote Control Panel Located At Control Room Near Concrete Dam At Downstream Side. Proper Termination With Clamping And Bolting At Each End Has To Be Provided As Required. [ Maximum Distance Of Equipment From The Running Earth Strip Will Be 5M ] 7 Providing Road Crossing At Each End Of The Dam By 25 Mm X 3Mm Gi Earth Strip Through 40Mm Dia. Ms Pipe ( Length Approx. 6M. ) At Depth 0.25M So As To Form A Close Loop Of Earthing Network [ Road Crossing Should Be Close To The End Poles. Excavation Of Road For Laying Of Ms Pipe, Repairing & Finishing Of Road After Laying Of Ms Pipe And Allied Works Will Be Under The Scope Of Agency ] . 8 Painting Of Lighting Poles: Painting Of Lighting Poles With One Coat Of Red-Oxide And Two Coats Of Synthetic Enamel Paint Of Approved Brand Upto Required Even Shed [ Colour - White ] . Supply Of Paint Under Scope Of Agency. Cleaning And Surface Preparation For Painting Under Scope Of Agency. Numbering Of Poles Has To Be Done As Previous. => Limited

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