Original Date: 11/03/1996
Revision Date: 01/18/2007
Information : Weld Quality Control Services
The Weld Certification Program maintained by the Equipment Testing and Inspection (ET&I) group qualifies all welders employed by Oak Ridge and its prime and most sub-contractors. The testing facility contains 14 weld booths with the capability of certifying gas tungsten metal arc, gas metal arc, and shielded metal arc. Special processes such as Laser Welding or Electron Beam (EB) Welding can also be qualified but are conducted in the production welding areas. The certification codes normally used are ASME-Section IX, AWS-D1.1, or Military Standard 248D. The inspectors are qualified to AWS-QCI (standard for qualification of welding inspectors), and the recordkeeping system maintained in the weld shop office is complete.
For new process development, the welding engineer provides a preliminary weld specification indicating welding parameters from which the inspector arranges for a welder to prepare a test coupon. All operators prepare their test coupons from material that is prepared, stored, and identified by weld test shop personnel. Test specimens are then prepared and tested in accordance with the specified codes. Capabilities include visual examination, radiography, tensile testing, bend testing, and impact testing. The actual parameters used during the welding are then recorded to produce the Procedure Qualification Record. This system of certification is exceptional because of the number and variety of welders and processes that require tracking.
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