Radiography of Welded Joints Sample Clauses

Radiography of Welded Joints. As soon as practicable after the welding is done, selected longitudinal and circumferential weld lengths shall be radiographed to detect welding defects as per the requirement of IS 4853 and as directed by Employer’s Representative. If the results of such radiography fail to conform to the requirements, the Contractor shall carry out 10% radiography test for the pipe welding at the factory as well as the Site as directed to the satisfaction of the Employer’s Representative. Weld ripples or weld surface irregularities and slag, etc., on both inside and outside shall be removed by any suitable mechanical process to a degree such that the resulting radiographic contact due to any remaining irregularities cannot mask or be confused with that of any objectionable defect. The radiograph shall be made in strict accordance with the latest requirements and as per the latest and most efficient technique, either with X-ray or gamma ray equipment. The safety requirements during radiography shall be in accordance with IS 2598. The radiographs shall be marked in such a way that the corresponding portion of the welded seam and the welder can be readily identified. All radiographs will be reviewed by the Employer’s Representative to identify the defects and determine those which requires rectification. Defects that are not acceptable shall be removed by chipping, grinding or flame gouging to sound metal and the resulting cavities shall be welded. After rectification, the joint is to be radio-graphed again to prove the quality of the repair. The radiographs will be judged as acceptable or unacceptable by the Employer’s Representative based on the latest standards prescribed by the relevant Indian Standard specification. All X-rays shall be taken with equipment and by personnel of the Contractor. Films shall be developed within 24 hours of exposure and be readily accessible at all times for inspection by the Employer’s Representative. The Contractor shall provide, for the use of the Employer’s Representative, suitable X- ray viewing equipment. X-ray films shall be properly maintained by the Contractor. A complete set of radiographs and records as described in IS 2595, for each job shall be retained by the Contractor and shall be handed over to the Employer on completion of the Contract. All films shall be identified by the number and chart prepared indicating location of any work associated with the pipe erection and such inspection shall be performed by the Radiographer at...
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