STEEL PIPELINE LAYING WORKS UNDER KOLKATA GA (PHASE-V) ON ARC BASIS FOR 2 YEARS

CARBON STEEL PIPES

PIPELINE LAYING / INSTALLATION BY OPEN CUT / HDD / MOLING (WITHOUT CASING) METHOD

"Receiving and taking over" as defined in the specifications, handling, loading, transportation and unloading of Owner supplied 3-Layer PE coated and bare linepipes from Owner's designated stack-yard to Contractor's stock yard/workshop/work-site including preliminary activities, preparation of drawings, wherever required for crossing etc. including handling, stacking, stringing on the pipeline Right-of-Use/ pipeline route alignment corridor, carrying out inspection of company supplied materials including linepipes at the time of taking over, laying/ installation of coated linepipes as per specification wherever required depending on site condition including execution of all works, "taking over", handling , including loading and unloading, transportation of Owner supplied materials other than linepipe from Owner's designated place (s) of issue to work site, arrangement of all additional lands required for Contractor's storage, fabrication, access for construction, procurement and supply of all materials (except Owner supplied materials), consumables, equipment, labour and other inputs, carrying out all temporary, ancillary, auxiliary works, ready for commissioning of pipeline as per drawings, specifications, other provisions of Contract document and instructions of Engineer-in-charge, including but not limited to carrying out the following works:

Surveying of route and detours required at the time of execution including marking the same in topographical sheet, preparation of construction drawings showing survey details, and submit same to Owner for review / approval.

Staking and installation of construction markers, clearing, fencing, grubbing, full filling all the requirements of various statutory/ environment authorities to the entire satisfaction of concerned authorities. During construction, methodology of laying of steel pipeline (i.e. open cut/ HDD/ moling without casing) shall be decided as per requirement of various Government statutory/ environmental/ local authorities and the same methodology of steel laying shall be binding to the contractor for Authority's entire satisfaction. Grading / clearing of work area and shifting of all obstruction within the ROU/ Pipeline route alignment corridor viz. electrical lines/ poles, telephone line / poles, foreign pipeline, etc.

Barricading the pipeline construction area prior to execution of the works as per drawings enclosed with tender document and to the entire satisfaction of Owner / Engineer-in-charge.

Carrying out repairs of pipe defects/ replacement in case of irreparable defects and repairs of defects of pipe coating not attributable to Owner including defects/ damages occurring during transportation / handling.

Stringing of line pipes along pipeline trench / ROU / Pipeline route alignment corridor provided on sand/soft soil bags including all supplies, manpower & machinary etc.

Checking, cleaning, aligning, bending, cutting and bevelling (as required) of pipes for welding and field adjustments including pipe fittings, welding, carrying out non-destructive testing of welds as required including 100% radiography by X-ray either by internal source or external source based on site conditions/front availability and in this regard decision of EIC shall be final and binding to the contractor [In case placement/installation of X-ray equipment is not feasible, in that case Gamma ray may be permitted as per decision of Engineer In-Charge(EIC) based on site conditions] and providing all requisite equipment, labour, supervision, materials, films, consumables, all facilities and personnel to process, develop, examine and interpret radiographs and other tests as required, carrying out repairs of weld joints found defective by Engineer-in-Charge, carrying out re-radiography and other tests as required on repaired joints.

Carrying out installation of carrier line pipe across all minor crossing viz. road, cart track, pathway, water bodies etc. in all type of underground strata (including soft/hard soil and all type of rock ) at designated depth by open cut / HDD / moling which falls under proposed pipeline route (except at major crossing by HDD method / Cased crossing as mentioned elsewhere in the SOR item).Type of crossing (Minor or major) shall be decided as per site requirement and decision of EIC/BGCL shall be final in this regard and binding to the contractor.