Bridge And Roof Company India Limited Tender

Gas Compressors

HOT TAPPING: Remove the painting with wire brush and clean the spot of hot tapping and offer for inspection. After inspection Clearance, weld a stub of specified dia. and length as per specification of the main line. Carry out hydro test of the stub. After clearance of hydro test, weld RF pad on the stub/ mother line and carry out leak test as per specification 6-44-0021. The stub has to be pre-fabricated before taking hot tapping as per specification and instructions of the engineer-in-charge. Install a valve on the stub welded on the mother line. Completion of hot tapping work including the arranging of the hot tapping machine and cutter and also taking out the cut piece of pipe shall be under the scope contractor. Install a blind flange on the open end of valves, if required, after removal of hot tapping machine. All materials for hook up line RF pad,stub-in - pipe, valves, flanges, gaskets, stub, nuts, blind flanges, etc, is within contractor's scope. All the requirements of Hot tapping mentioned in the SOR & Scope of Work shall be read in conjuction with specification 6-44-0021. Mobilization/ Demobilization of all equipment, hot tapping machine including supply of all temporary and other materials required for carrying out Hot tapping works (with adequate numbers of stopple plugging machines along with all temporary accessories,materials such as sandwich valves, flanges, pipes, elbows etc. to carry out Double Line Stop and Temporary by-pass connection, if required & indicated subsequently).Performing all operation of Hot tapping (and Stopple Plugging, as applicable) on existing Pipeline/ piping for un-interrupted piping operations as per scope of work,specifications, standards, provisions of Contract document and instructions of Engineer-in-Charge

Notes: 1) The rate given in the SOR for hot tapping is inclusive of prefabrication of stub, to the header and its hydro test,fabrication and welding of RF pad and its air test,arranging of compressor for air test, lug grinding ( if required) and installation of valve on the welded stub, fabrication and installation of blind flange on open end of the valve after the completion of hot tapping work and removal of hot tapping machine, transportation of equipment, materials,etc and all other items require but not limited to mentioned for completion of the work. 2) The rate is inclusive of scaffolding/barricading required if any for carrying out hot tapping at higher elevations.The sizes given below are of branch (Tapping) pipe. 3) HOT tapping machine shall be arranged by contractor for sizes listed in scope, contractor to study the feasibility of Hot tapping and execute the work, and also work shall be executed by conventional method, which shall be decided on case to case basis. 4) For Equal size Hook ups with Hot Tappings-Split Tee shall be used as branch size is equal to main header size. Supply of Split Tee shall be in the scope of Contractor). Rates for each Hook up point shall be inclusive of 100%radiography in case of all butt welded joint & 100%DP/MP test in case of all fillet welded joints. 5)The rate shall be inclusive of stopple arrangement.Contractor to study the feasibility and requirement of stopple arrangment for Hot tapping and execute the work.