Attending PR-E anomaly point through Rerouting of 220 m section of HBPL at Ch. 454.9 Km near Baishnabchak High school under ERPL Mourigram jurisdiction

Estimate for works part of HDD in HBPL

101 - 300 METERS (without OFC conduit)

HDD INSTALLATION (without OFC)-12.75" -Design, detailed engineering & installation of pipeline across rivers, NH, SH, Expressways, Railways, etc by HDD method. #Complete work for the crossing (between the limits, as indicated in the approved drawings) including mobilization & de-mobilization at site(s), supply of all materials as per the `Scope of Supply' and all consumables, equipment, manpower & other resources and arranging the required land for site preparations and execution of, but not limited to, the following works in accordance with the specifications, drawings and as per all provisions of the contract document and instructions of the Owner. #Interpretation of data of hydrological / geo-technical surveys furnished by the Owner, carrying out fresh topographic survey of the rivers, NH, SH, Expressways, Railways, etc & developing new profile drawing for the crossing location, carrying out additional surveys required for collecting data relevant to design and construction of the crossing, performing all engineering & design calculations, preparation of all necessary construction drawings for approval of the Owner as per the provisions of contract document, preparation of detailed construction method statement and design analysis. #Taking delivery and transportation of Owner-supplied 3LPE coated pipes to the work site from designated stockpile location, inspection of the coated pipes visually and/or with holiday detector for defects, including arranging all necessary intermediate storage area required thereof till the pipes are installed in permanent position. #Complete site preparation including arranging of required land, setting up of fabrication yard, preparation of temporary arrangement for pipeline stringing, launching etc. #Carrying out repair of pipe defects, replacement in the case of non-repairable defects and repairing damages to pipe coating including defects/ damages occurring during transportation and handling. #Pre-construction surveys and collection of all necessary data. #String preparation including repair of pipe and pipe coating defects, welding, non-destructive testing of welds including 100% radiography (by X-ray), supply of films & all equipment and providing all facilities to Owner's representative(s) for examining radiographs, repair of defects in the welds and re-testing etc. #Coating of the field joints of the pipe string to be installed by HDD method with DIRAX heat shrink sleeves of M/s Raychem's make, DDXTM Directional Drilling Kit of M/s Canusa or of any other approved make used for HDD crossings. #Repair of all coating damages in the pipe section to be laid by HDD method by full encirclement sleeves using suitable cut sections of approved quality of heat shrink sleeves of M/s Raychem make, DDXTM Directional Drilling Kit of M/s Canusa or of any other approved make. #Carrying out air cleaning, gauge pigging and pre-installation hydrostatic testing of the complete pipeline string, as per the specifications, including repair of defects and retesting etc. #Installation of the pipeline below the rivers, NH, SH, Expressways, Railways, etc by single horizontal directional drilling operation to the correct profile as per the approved drawings. #Carrying out post-installation hydrostatic testing of HDD pipe string (along with transition pipe section). #Carrying out post-installation coating survey as per approved procedure. #Restoration, clean-up and disposal of drilling fluid, waste and all other surplus materials etc. #Transportation of surplus Owner-supplied pipes to the designated stockpile location of the Owner. #Preparation of as-built drawings and other records etc. #All other works not specifically listed herein, but required as per specifications, drawings, provisions of the contract document, calculations and construction method statement, leading to successful completion of the works.

ELECTRONIC GEOMETRY PIGGING (EGP)-Carrying out Calliper survey for ascertaining the internal geometry of the installed pipeline sections including mobilization/ demobilization of pigging tools, tackles, consumables, accessories and personnel by contractor at work site including magnetic pig, electronic geometry pig, preparation and cleaning of the pipeline sections by running series of foam pigs for cleaning the line from debris, water & making it dry for launching calliper pigs, running of magnetic pig for cleaning of ferrous residue, launching and receiving the electronic & standard calliper pigs, data retrieval, interpretation of data and submission of reports in the form acceptable to the Owner, rectification of defects observed from calliper survey (if HDD is executed by the same contractor), including supply of all labour, materials, equipment & instruments, calliper pigs, fabrication of launching & receiving barrels, all complete as per specifications and directions of Site Engineer / Engineer-in-Charge.

DIAMETER-12.75"

"NITROGEN PURGING & OIL EVACUATION-Fixing of temporary header / facility at both ends of the old/new pipeline section, inserting the bi-di pig and carrying out product evacuation by nitrogen purging, as per specification and direction of Engineer-in-Charge including supply of all labour, materials, equipments, instruments, pigs, barrels etc. Complete in all respects. "

DIAMETER-12.75"

TIE-IN & HOOK-UP-Carrying out tieing-in and hook-up of the installed HDD sections including laying of transition piping upto 12 m for hook-up with existing Mainline on either side of HDD crossing including all excavation/ trenching in all kinds of soil including rock ,transportation of coated pipe from owner's stackyard, cutting of pipe, pre-testing of pipe sections before hook-up, making field bends out of pre-tested pipes (pipes shall be supplied by Owner) to match the site requirement, welding, carrying out 100% radiography, field joint coating, holiday detection, repair of damaged coating, backfilling and making through the pipeline etc. complete in all respects as per specifications and directions of Engineer-in-Charge.

DIAMETER-12.75"

REMOVAL & APPLICATION OF COATING-Excavation up to bottom level of pipe which is normally at 1.5 to 2 m depth for lengths upto 30m, removing the coating, creating access for carrying out hot-tapping operation, applying the coating again after completion of Hot-Tapping Works and backfilling the excavated trench with excavated earth along with additional appropriate quantity of soil (to be arranged by the contractor), compacting the backfilled earth and restoring to original level and condition with all labours,materials, tools and tackles, equipments etc. as directed by EIC / Site Engineer

DIAMETER-12.75"

"TRANSITION PIPE LAYING-Laying of Owner-supplied pre-coated mild steel line pipes, including arranging all additional land/construction corridor, beyond Owner's ROW, required for Contractor's storage, fabrication, access for construction site, movement of construction equipment etc., receiving and taking over Owner-supplied materials, handling, transportation etc. from Owner's issue point to work site, stringing along Right of Way (ROW)/ pipeline corridor, providing labour, equipment and supply of other inputs & materials/ consumables necessary to perform and complete the work in all respects in accordance with the contract including, but not limited to, the following works:#Taking delivery and transportation of Owner-supplied coated pipes to the work site from designated Stockpile location, inspection of the coated pipes visually and with holiday detector for defects, arranging all necessary intermediate storage area required thereof till the pipes are installed in permanent position;#Clearing and grading of ROW/ pipeline corridor, cutting of trees, vegetation etc. including keeping record of trees cut, including de-watering etc.;#Stringing of pipes along ROW including providing straw bags/ soft padding below pipe;#Trenching to all depths to maintain clear earth cover as per specification and to fit minimum bend radius, by excavation in all kinds of terrain & soil, including stripping top soil to a depth of 30cm to the full anticipated width of the ditch and storing this material separately along the ROW to allow re-depositing of the same on top of the backfilled ditch (in cultivable and other areas specially designated by Owner);#Carrying out repair of pipe & coating defects for defects occurring after "taking over" of pipes from Owner, replacement in the case of non-repairable defects and repairing damages to pipe coating including defects/ damages occurring during transportation & handling;#Carrying out 100% radiographic inspection (by X-Ray) of all field weld joints as per Specifications and Special Conditions of Contract (SCC) and destructive testing of one weld joint as per specification and direction of Site Engineer, including providing Crawler type Automatic X-Ray machine and/ or external X-Ray machine and all other requisite equipment, labour, supervision, materials, approved films, approved consumables, all facilities and personnel to process, develop, examine and interpret radiographs (by qualified and experienced Radiography Inspector), providing all facilities to Owner's representative(s) for examining radiographs and other tests as required, carrying out repair of weld-joints found defective, carrying out re-radiography and other tests as required on repaired joints, etc.;#Carrying out coating of all field weld joints, by specified coating insulators, including supply of approved joint coating materials, providing all equipment, materials and consumables necessary to carry out the job as per manufacturer's recommendation;#Carrying out holiday detection at specified voltage level corresponding to coating type as per specifications, and repair of coating, if any;#Laying pipeline by open-cut method at crossings viz., cart-track, village road, metalled/ un-metalled roads, minor water courses (MWC) and restoration of the site to original condition;#Lowering the pipeline in trench, tieing-in, backfilling with excavated earth and/or other suitable soil (top soil stored separately during trenching shall be backfilled on top of the ditch) as directed by Site-Engineer;#Carrying out air cleaning, gauge pigging and hydrostatic testing (to specified pressure) of the complete pipeline including providing pre-testing of designated sections as approved by Engineer-in-Charge, providing all equipment, pumps, fittings, instruments, dead weight tester etc. and services, su pervision, labour, consumables, testing of water, supply & injection of corrosion inhibitor, locating leaks, if any, and rectification of defects attributable to Contractor, re-testing after rectification etc. and cleaning the pipeline section after successful hydrotesting;#All tie-ins, including tieing-in with HDD section;#Obtaining work permits/ NOC from various authorities, having jurisdiction, before execution of work and complying with all stipulations/ conditions/ recommendation of the authorities;#Final clean-up and restoration of ROW/ construction corridor, field bunds etc. and obtaining NOC from statutory authorities (as required), and obtaining NOC from respective landowners in respect of final restoration of their land etc., disposal of debris and returning surplus material to designated disposal areas/ storage location, as directed by Engineer-in-Charge, restoration of land, facilities and boundary wall etc. for facilities dismantled/ damaged by Contractor during construction;#Preparation of As-Built drawings, Pipe book and other records as per specifications etc.;#Supply of all materials (other than those specifically undertaken to be supplied by the Owner under the contract);#All other acts, deeds, matters and things necessary to make the pipeline ready for commissioning and completing the works in all respects as per drawings, specifications and instructions of Site Engineer/ Engineer-in-Charge. Note: Liability of Owner to provide ROW to contractor shall be limited to the extent between the hook-up points with existing pipeline including for laying transition pipeline section. Additional space required by contractor beyond the above limits, including for access to site, shall be arranged by contractor at his own cost & initiative. Payment under this item shall be made only for the transition pipe laid more than 12 m length on both sides. Transition Pipe laying upto 12 m length on both sides is included in the SOR item for Tie-In and Hook up."

DIAMETER-12.75"

FABRICATION OF HOT PULL INDUCTION BENDS-Taking delivery and transportation of bare pipes from owner's stockpile, transportation, unloading the pipes at manufacturer's works and fabrication of Long Radius (R=6D) Hot pulled induction bends having tangent length of approximately 1000m at both ends as per specification and delivery of hot pulled bends to site including visual examination, manual U.T. on the entire weld seam, bevelling of ends as per API 5L, supply of all materials, consumables, labour etc. as per specifications and direction of Site Engineer / Engineer-in-Charge.

DIAMETER-12.75"

PIPELINE MARKERS-Supply of all materials necessary for fabrication and installation of kilometre posts, direction markers and warning signs at the locations as per specifications, excavating & grouting in cement concrete 1:3:6, and all other works necessary for fabrication & installation of the markers including cleaning, priming & applying two coats of coal tar based epoxy paint on underground portions, supply and application of one coat of primer and two coats of epoxy paint of approved colour and quality on overground portion, stencil letter cutting for number, direction, chainage etc. and restoration of site to original condition and all other acts, deeds, matters and things and work, labour, inputs and materials/ consumables necessary to perform and complete the work in all respects as per approved drawing & specifications and as per direction of Site Engineer / Engineer-in-Charge.

KILOMETER POST

DIRECTION MARKER

WARNING SIGN

Providing and installing RCC (1:1.5:3) boundary pillars as per drawings on both edges of th