Supply And Installation Of Chemical Earthing At Lpg Bottling Plant Silchar Note:1. No Additional Information/Condition To Be Provided In The Price Bid,Else The Bid Will Be Rejected. 2. Bid To Be Provided In The Excel Form Provided In The Tender.3. Bidder , LPG BP Silchar Earthing Inst Works-Assam

Supply And Installation Of Chemical Earthing At Lpg Bottling Plant Silchar Note:1. No Additional Information / Condition To Be Provided In The Price Bid, Else The Bid Will Be Rejected. 2. Bid To Be Provided In The Excel Form Provided In The Tender.3. Bidder Is To Enter Bidder Name In The Designated Place Below.4. Bidder Is To Quote His Bid In The Designated Place At The Bottom Of The Sheet. - Supply Of Chemical Earthing Technology ( Pipe In Pipe ) For Electrode Capacity Of 40Ka For 1 Sec. Crystaline Conductive Mixture Which Is Machine Pressed In The Pipes Should Not Disintegrade Or Collapse When The Outer Pipe Corrodes.Resistivity Of The Material Shall Be Less Than 0.2 Ohm Meter When Tested By Making A 20 Cm Cube Of The Material & Checking The Resistance Across The Opposite Faces Of The Cube. Necessary Test Certificate Shall Be Submitted.Concentric Earth Electrode Pipe Should Be Ms Of Is:1239 Quality & Hot Dip Galvanised Of 150 Micron. Electrode Material Selection Should Be As Per Clause 9.3: Is-3043.Current Capacity:40Ka Primary Conductor ( Inner Pipe Dia-32Nb;Electrode Outer Pipe Dia-65Nb Length Of Concentric Pipes:3M B ) Supply Of Mild Steel Electro Galvanized Bus Bar Of Size 350Mmx50mmx6mm, With Minimum Coating Thickness Of 150Micron, Shall Be Welded To Earth Electrode Pipes Or Connected With The Help Of 2 Nos. Of Stainless Steel Nut Bolts Of Appropriate Size. This Bus Bar Connection Plate Shall Have 3 Holes Of 12Mm Dia. Placed At 50Mm Apart On Either Side ( Total 6 Holes ) For Connecting Earth Conductor. Three Stainless Steel Washers & One Spring Washer Shall Be Supplied Along With Each Stainless Steel Nut & Bolt For Necessary Connection. C ) Supply Of Earth Enhancing Material ( Back Fill Compound ) Which Contain Conductive Cement, Graphite Carbon Powder, Hydrous Aluminum Silicate, Sodium Montmorillonite Etc., Must Be In A Sealed Moisture Proof Bags Marked With The Name Of The Manufacturer, Quantity, Batch No., Date Of Manufacture Etc. It Shall Be Tested And Confirm To The Requirement Of Iec 62561-7 And It Should Be Rohs Complaint. Nminimum Quantity Requirement Per Pit Of Size 5’X5’X10’ Shall Be Minimum 75 Kg Per Pit ( In Case Of Open Pit Installation Of Earth Electrode ) And For 250 Mm Bore Type Pit Shall Be Minimum 50 Kg Per Pit. Nd ) Construction Of Earth Pit Having Ms Chequered Plate Cover With Handle. Disconnecting The Inlet, Outlet Of The Lpg Liquid And Vapour Nline, Srv, Hla, Level Gauge, Manhole, Water Drain Line, Globe Nvalves, Rov And Other Fittings Of The Vessels, Removal Of Fire Nproof Coating Wherever Necessary And Disconnection Of Nelectrical Cables Without Any Damage As Per The Directions Of Nthe Iocl Site Engineer. Any Damage For The Fittings Or Any Nequipments During Removal & Fixing Of The Connection Has To Nbe Made Good By The Tenderer

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