COMPOSITE WORKS FOR CONVERSION OF 18 INCH TMPL (TROMBAY MGL PIPELINE) NON-PIGGABLE TO PIGGABLE AND ASSOCIATED JOBS IN MUMBAI, MAHARASTRA

SECTION-A (PIPELINE WORKS)

PIPELINE LAYING / INSTALLATION (CS PIPES)

Receiving and taking over, as defined in the specifications, handing, loading, transportation and unloading of Owner-supplied 3-layer PE coated line pipes, bare pipes along with associated fittings and valves from Owner's designated stock-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, carrying out inspection of Company-supplied materials, including line pipes, at the time of taking over, laying / installation of coated line pipes, associated fittings (IJ,barred tee etc) and accessories, including execution of all works, taking over, handling, including loading and unloading, arrangement of all additional land 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 (EIC), including, but not limited to, carrying out following works:

Including marking the route map, alignment sheet, etc. drawings showing survey details, and submit same to Owner for review.

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, grading of work area. Shifting of all obstructions within the ROU / pipeline route alignment, viz. electrical lines / poles, telephone lines / poles, coordination with concerned authorities and obtaining permissions from these authorities.

Trenching to all depths and to a width to accommodate the pipeline and/or optical fibber cable/cable conduit during lowering & backfilling as specified in scope document and as per the relevant standards, specifications, etc by excavation in all types of soils (including soft/hard rock), including controlled blasting, chiselling or otherwise cutting etc.; providing depth of padding (Soft soil or sand) /rock shield (as directed by EIC) in trench bed & above and around the pipeline HDPE duct and OFC as required with sand / graded earth approved by Engineer-in Charge; [The minimum depth of the top of pipeline shall be 1.2m measured from top of pipeline coating to the top of undisturbed surface of the soil or as per Special Condition of Contract (SCC) / OSID - 141 OISD - 226]. Dewater of trenches if required as per site condition.

Carrying out repairs of pipe defects / replacement in new pipeline laid by contractor in case of pipe defects / deficiencies not attributable to Owner including defects / damages occurring during transportation / handling.

Stringing of line pipes along ROU including providing straw / sand / soft soil bags, soft padding / sand padding.

Checking, cleaning, aligning, bending, cutting and bevelling (as required) of pipes for welding & field adjustments including pipe fittings, welding, carrying out non-destructive testing of welds as required including 100% radiography by X-Ray (in case of space constraint & small work by Gamma Ray on Owner's approval) as per specifications in piping of all types and thickness and providing all requisite equipment, labour, supervision, materials, films, consumables, all facilities & personnel to process, develop, examine and interpret radiographs & other tests as required, carrying out repairs of weld-joints found defective by EIC, carrying out re-radiography and other NDT tests (e.g. MPI, DP & additional UT for golden joints) as required on repaired joints, etc. as mentioned in SCC and particular job specifications.

Coating of all weld joints, short radius / long radius bends, etc.