B2-DH-9B dation bolts For combinations of type H gear un Bevel-helical speed reducers B2

Flender/Flender Gear Units/Bevel-helical speed reducers B2

n the opinion of COMPANY, ultrasonic inspection is required to confirm or clarify defects indicated by radiography. ) When automatic procedure is used at least 1cm on each wel shall be ultrasonically inspected at COMPANY' discretion. In addition, ultrasonic inspection may be required for certai critical weldings of the pipeline (.. tie-ins, welding of valves, flanges) randomly se lected at COMPANY' discretion. All fillet and groove welds other than that radiogr aphed shall be subjected to dye pentrant/ MP inspection. The non destructive test syste used for inspecting welds must be approved by the COMPANY. Weld quality is judged on the basis of the acceptability crit eria mentioned below : Any weld which as result of radiographic and / or ultrasonic examination in the opinion of COMPANY exhibits imperfections greater than the limits stated in API-1 latest edition or as superseded in this article shall be consid ered defective and shall so be marked with an identification paint marker. 1 of 1 STANDARD TECHNICAL SPECIFICATION MECON LIMITED REGD. OFF: RANCHI 8 OIL & GAS SBU, DELHI DOCUMENT NO. Page 2 of 6 TITLE MEC//0/2/0 REVISION : 0 PIPING FABRICATION AND ERECTION EDITION : 1 In addition to the API-1 requirements, the welds containing cracks including crater cracks regardless of size of location are unacceptable. . Any amount of inadequate penetration of the root bead as efined by API-1 is unacceptable. ii. Any amount of incomplete fusion between the root and bevel as defined by API-1 is unacceptable. iii. Unrepaired burn through areas are unacceptable. Contractor shall appoint agency for carrying out the radiography works at site from the list of agency (ies) enclosed in the bid document. The Radiographic Examination procedures to be adopted shall be submitted by the contractor as per Exhibit- and shall be got approved from the Owner' Inspector prior to employment. person qualified to ASNT Level -II or ASNT