PROCUREMENT OF WORKS FOR 16 INCH DIA PIPELINE INSTALLATION ACROSS DHANSIRI RIVER BY HDD METHOD HOOKUP WITH EXISTING PIPELINE 5 JOINTS AND DEWATERING AND SWABBING AND EGP OF 55 KM REPLACED PIPELINE DRYING AND NITROGEN PURGING AND COMMISSIONING

Dhansiri HDD, PIPELINE INSTALLATION AT MAJOR RIVER BY HDD TECHNIQUE Receiving, taking over & Installing of owner supplied free issue 3 layer Externally PE coated & internally expoxy coated line pipes of size 16", W.T. 11.13 mm, API 5L Gr. X-65, PSL-2 grade from owner's designated point of issue. For complete works of the major River by horizontal drilling method (HDD) including all additional drilled lengths necessitated by Contractor's for design and construction of crossing, preparation of all necessary design & construction drawings and procedures for Owner's approval, mobilisation and de-mobilisation at site(s), supply & Installation of all materials as per "Contractor's scope of supply" including supply & installation of 6" size, 6.4mm API 5L Gr. B/IS:1239 CS conduit pipe for OFC in required lengths, all consumables, equipment, manpower and other resources and acquiring the required land for site preparations, and execution of, but not limited to, the following works in accordance with specifications, drawings, and as per provisions of the Contract document and instructions of the Owner/ Engineer-in-Charge. Strings preparation including welding, NDT of welds and re-bevelled areas, radiography, pre-testing of completed string, corrosion coating of field joints, inspection of corrosion coating and repair of defects, Pre-construction surveys, Installation of pipeline and CS conduit/ optical fibre cable conduit by horizontal directional drilling to the correct profile as per approved drawings and specification, Strapping of CS conduit with main pipeline, Pulling of optical fibre cable in inter-duct of flexible HDPE tubing in the conduit mentioned above, Post-installation hydrotest including leaks and repair of defects and retesting, etc. for defects attributed to Contractor's faulty work, Supply, fabrication and construction of protective fencing as required, Supply, fabrication and erection of pipeline markers, Restoration and clean-up etc., Preparation of as-built drawings and other records etc., All other works not specifically listed herein, but required as per specifications, drawings, provision of contract document, calculations, and construction method statements, leading to successful completion of works. Note : 1. Contractor shall be paid based on distance between tie-in points at two ends of crossing and not between points of entry & exit. 2. The work involved Supply and Installation of 1 nos of 6" CS pipe for OFC (IS 1239/ API 5L GR. B) along with carrier pipe in each HDD crossing. 3. If required, contractor shall arrange additional land for machine & String preparation.Cost is deemed to include in this item only. 4. Pipe string joints shall be coated with DIREX (Heat Shrinkable Sleeve Reinforced with Fiberglass). 5. Minimum depth shall be 2.5 M below Scour level or minimum 15M below bed level for River Crossings.

Hook Up Hook Up with existing pipeline by Cold Cutting Methodology including supply of localized nitrogen & sealing existing pipeline with dishend (supply by the Contractor).

Dewatering and swabbing of the pipeline. Note- For Swabbing combination of low density and high density pigs shall be carried out.

ELECTRONIC GEOMETRIC PIGGING (EGP) Mobilisation/ demobilisation of pigging tools, tackles, consumables, accessories and personnel by CONTRACTOR at work site including but not limited to Magnet pig, electronic geometry pigs and pig tracking device, as per specification and other provision of the bid document including supply of material, equipment, manpower, etc. as required for geometry inspection and magnet cleaning of 16" Pipeline.

DRYING AND COMMISSIONING: Complete work of carrying out drying by vacuum drying method or supper air drying & commissioning of pipeline including supply of manpower, equipments & consumables nitrogen required for purging etc,)materials for all temporary works and performing associated works,complete as per the relevant specifictions,other provisions of contract document and instructions of Engineer-in Charge.

Drying by vacuum drying/ super air drying method of pipeline section

Carrying out commissioning checks and making the pipeline section (ready for commissioning including supply of all adequate nitrogen for pipeline purging equipment, manpower, consumables (including all types of pigs and required materials), materials for all temporary works and performing all associated works, complete as per the relevant specifications, other provisions of Contract document and instructions of Engineer-in-Charge. Note- Purging of pipeline with nitrogen shall be considered for atleast 4 km length of pipeline.(despatch terminal to receiving terminal ) Cost is included under this item only.

PIPELINE LAYING/ INSTALLTION: Laying/ installation of coated/ bare line pipe, associated fittings and accessories, etc. as per specifications, drawings, other provisions of Contract and instructions of Engineer-in-Charge, including but not limited to carrying out the following: "Receiving and taking-over", handling, loading, transportation and unloading of Owner supplied externally & internally corrosion coated and bare line pipes from designated place(s) of issue/ dump site(s) to Contractor's own stock-yard(s)/ workshop(s)/ work-site(s) including stringing on the pipeline Right-of-Use (ROU)/ Right of way (ROW); "Receiving and taking over", handling, including loading and unloading, transportation of Owner supplied materials other than line pipe from Owner's designated place(s) of issue to worksite(s); Arrangement of all additional land required for Contractor's storage, fabrication, access for construction (other than Owner provided ROU/ ROW); supply of all materials (except Owner supplied materials), consumables, equipment, labour, etc; Staking and installation of construction markers, clearing, grubbing, grading (as required) of Right of Use/ Right of Way; Trenching to all depths and to a width to accommodate the pipeline and/ or optical fiber cable/ cable conduit 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 blasting, chiseling or otherwise cutting etc.; providing trench padding as required with sand/ graded earth approved by Engineer-in Charge; Carrying out repairs of pipe and coating defects not attributable to Owner (i.e. defects occurring after "taking over" of pipes from Owner); Thorough internal cleaning of all pipes by suitable methods to remove debris, shots, grits etc. to the satisfaction of Engineer-in- Charge; Stringing of line pipes along ROU/ ROW including providing straw bags, soft padding/ sand padding; Aligning, bending, cutting and beveling (as required) of pipes for welding, installation of Induciton bend along the route, and field adjustments, NDT of re-bevelled area, welding, carrying out destructive/ non-destructive testing of welds as required including radiography and providing all requisite equipment, labor, 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 non-destructive tests as required on repaired joints, etc.; Coating of all field weld joints , buried fittings (as applicable), valves (as applicable) etc.; Lowering the pipelines in trench including providing sand bag separators for parallel pipelines at the specified spacing (when applicable), providing required padding over and around the pipeline with sand/ graded material approved by Engineer-In-Charge (in rocky areas), supply and instalation of warning mat, backfilling with available, approved excavated material and/or other suitable soil approved by Engineer-In-Charge; Supply and installation of slope breaker as per specifications and drawings in steep slope areas, wherever required; Carrying out hydrostatic testing including air cleaning, flushing, filling, gauging, pressurization of complete pipeline in various test sections as approved by Engineer- In-Charge to the specified test pressure, providing all equipment, pumps, fittings, instruments, dead weight tester, all types of pigs etc., and services, supervision, labour, consumables, water including supply of corrosion inhibitor, air, etc. as required, locating of leaks and rectification of defects attributable to Contractor, re-testing after rectification, successful completion of hydrotesting of pipeline (De-watering covered else where in the SOR); Restoration of land, facilities and boundary wall etc. at associated facilities dismantled/ damaged by the Contractor during construction; Preparation of as-built drawings, pipe-book and other records. SOR shall be read in conjuction with scope of work, job specific requirements, specifications,standards, drawings and other provision of contract document. All above works for buried pipeline as per following details:

Installation of Coated Line Pipes as per following details ( Pipe OD - 406.4 mm (16"), Wall Thickness - 11.13 mm, Pipe Grade - API 5L Gr X-65, PSL2 , External Coating - 3 LPE & Internal Epoxy Coated ) Note: Trench in all soft and hard rock incuding supply of Padding.

Unit rate over and above item no. 1 for supply of specified and approved quality of sand atleast of 500 mm over the pipe including supply of sand in place of available excavated material and/ or other suitable soil as per applicable standards/ specifications, including backfilling of excavated trench for specified length after laying of pipeline, including transportation of backfill material over all distances and disposal of surplus excavated soil, complete.

Demolition & Dismantling (refer specification no. C-SPC-111)

Demolishing BRICKWORK (taking all necessary safety precautions) for all depths and heights including supply of all tools and tackles, necessary scaffolding, propping, underpinning, cleaning and stacking of serviceable material, disposal of unserviceable material to spoil heaps anywhere within the plant boundary, all complete as specified and directed.

Demolishing PLAIN CEMENT CONCRETE work (taking all necessary safety precautions) for all depths below plinth level including supply of all tools & tackles, necessary scaffolding, propping, underpinning etc. disposal of unserviceable material to spoil heaps anywhere within the plant boundary, all complete as specified and directed.

Demolishing RCC WORK (taking all necessary safety precautions) for all depths & heights including supply of all tools & tackles, necessary scaffolding, propping, underpinning etc., cutting, straightening, scraping and cleaning of reinforcement bars, stacking of serviceable materials, disposal of unserviceable material to spoil heaps anywhere within the plant boundary, all complete as specified and directed.

Dismantling bolted/rivetted/welded STRUCTURAL STEEL WORK of all descriptions (taking all necessary safety precautions), including supply of all tools and tackles, consumables, necessary scaffolding etc., providing temporary bracings as required, cutting (by flame or saw) gusset plates, bolts, nuts, weldings etc., transporting and stacking of the serviceable materials, cleaning the site of work of all unserviceable materials for disposal to spoil heaps anywhere within the plant boundary, all complete at all depths and heights, as specified and directed.

PERMANENT MARKERS: Supply, fabrication and installation of following types of permanent markers along the route including all associated civil works such as excavation in all types of soil, construction of pedestals and grouting with concrete, clearing, supply and application of approved colour and quality of primer and paint, stencil letter cutting for numbers, direction, hainage, etc., restoration of area to original condition and performing all works as per drawings, specifications and instructions of Engineer-in- Charge. Note: The painting of all markers shall conform to coastal and marine environment of spec. P-SPC-410 irrespective of whatever shown on respective standards.

Navigable Water Sign

Kilometer Posts

Pipeline Warning Signs

RoU (Right of Use) Boundary Markers

Aerial Markers

Direction Markers

GEOTECHNICAL INVESTIGATION FOR RIVER CROSSINGS

Mobilization of all necessary man & machinery including Geotechnical experts. Making a nominal diameter of 100 mm various holes (05 nos) at locations (as decided by engineer) in soil using suitable method of boring including cleaning providing casing of required collection of disturbed soil sample and following properties as follows: - (A) Moisture content. (B) Bulk density & Dry density moisture content. (C) Sieve Analysis. (D) Hydrometer Analysis. (E) Liquid Limit & Plastic Limit. (F) Specific Gravity. (G) Unconfined Compressive Strength. (H) Direct Shear Strength. (I) Tri-axial Shear Test. Submitting SSI report in triplicate including all field records and laboratory test and recommendations. Submission of laboratory report in triplicate including determination of SBC of every layer up to 15 meters.

Shifting of Complete Welded Piping Structure for adjusting to Hook Up with Existing Pipeline at Despatch Station Only and any other Misclelaneous works as certified and approved by DNPL EIC

Mech Technik India Pvt Ltd (BID ID -275598)

TIRATNA ENTERPRISE (BID ID -275991)