AC interference mitigation measures due to overhead HT line crossings in Panipat-Jalandhar LPG Pipeline (96-273 KM) in steady and fault state conditions.

Amount

Supply Items

Supply of Solid State Diode Decoupling Device of approved make including required length of cable as per specifications for protection of pipeline at HT line crossing locations

Supply of earthing Electrode as per Technical Specification

Service Items

Installation of solid state decoupling device as per specifications including terminating the cables in the TLP box with cable lugs, sealing material, laying of cable, testing & commissioning of Zinc anodes etc. all complete with required material, excavation, backfilling etc. as per specification and directions of Site Engineer/ Engineer-in-Charge.

Installation of Earthing Electrode at 11 locations including terminating the cables in the TLP box with cable lugs, sealing material, laying of cable, testing & commissioning of grounding cell etc. all complete with required material, excavation, backfilling etc. as per specification and directions of Site Engineer / Engineer-in-Charge.

Excavating trenches of required width for pipes, cables, etc. including excavation for sockets, and dressing of sides, ramming of bottoms, depth exceeding 1.5 m, but not exceeding 3 m, including getting out the excavated soil, and then returning the soil as required, in layers not exceeding 20 cm in depth, including consolidating each deposited layer by ramming, watering, etc. and disposing of surplus excavated soil as directed, within a lead of 50 m for Pipes, cables etc. exceeding 80 mm dia but not exceeding 300 mm. (Rate is over corresponding basic item for depth upto 1.5 metre).

Composite Items

Supply, installation, testing & commissioning of DAC type Test Lead Point (TLP) with Ingress Protection IP:55 fabricated MS Sheet (Thickness : 3 mm top/side/rear/front & 5 mm : Bottom plates) with hinged front door, Heavy Guage MS pipe 100 mm nominal diameter, Phenolic laminated terminal plate, brass terminal bolts, neoprene gasket for front door, vandal proof concealed lock, etc as per latest revision of Standard AFC drawing (9200-99900-404-603-00 : STD-483). The work includes providing requisite concrete foundation of 600 mm x 600 mm x 800 mm at site, including MS hard pipe for cable entry through foundation, erection of the TLP over concrete foundation, termination of cables to the brass terminal bolts inside TLP box, jointing the cables to pipe (using cad welding/ pin brazing technique), repairing the damage to coat & wrap (with coating repair etc.), back filling the trenches, cleaning the site, applying epoxy paint / powder coating etc. The work also includes supply, installation, laying & termination of all XLPE, Cu cables of required length (as per site conditions) and size, lugs etc. The work includes supply and fixing of a non-corrosive name plate containing the details like KM location, identification, TLP No., direction of flow, connection scheme, type etc., on the side of the TLP box, etc. The name plate shall also include the details of corrosion coupon wherever installed, all as per the direction and specification detailed in the document complete with tools, tackles & other necessary requirement. The work complete in all respects including all materials, tools, tackles, labour as per tender specifications, AFC drawings & directions of the Site Engineer/Engineer-In-Charge.

Corrosion coupon with 1 sq. cm bare metal with 2 lead wire of 5 m each

Basics Techno Services Pvt Ltd

Corrosion Matters