WPS & PQR - How to write a WPS -Part 2
Welding procedure specification and welder qualification WPS (Welding Procedure Specification) is prepared by welding engineer .first welding engineer needs to prepare a PWPS (Preliminary Welding Procedure Specification), it is a technical note contains parameters related to welding.To meet the requirements of the design engineer the welding engineer has to prove in front of design engineer or the client company that the product have all the features which are expected by the firm. The welding engineer should prepare a technical document containing • Type of welding to be used. • Type of electrode to be used in welding • The current and electrode polarities • The size of electrode to be used • The base material specification The PWPS, PQR and SWPS are prepared by the welding engineer and its execution is done by welding inspector WPQ (Welder Procedure Qualification) The contractor has to propose a welder. The welding inspector have the authority to qualify the welder, he has to review the history records of the welder. Once the history records are satisfactory then he is permitted by the welding inspector to prepare the test coupon. Then coupon is subjected to visual examination. Once the visual examination is satisfactory then it is subjected for NDT or DT. If the NDT or DT is satisfied then welder issues a welding certificate with a validity of 6 months. If welder disqualifies a new welder will be proposed by the contractor or the welder has to prepare the test coupon, so get more videos subscribe ,Share and press bell notification . Thanks .
Welding procedure specification and welder qualification WPS (Welding Procedure Specification) is prepared by welding engineer .first welding engineer needs to prepare a PWPS (Preliminary Welding Procedure Specification), it is a technical note contains parameters related to welding.To meet the requirements of the design engineer the welding engineer has to prove in front of design engineer or the client company that the product have all the features which are expected by the firm. The welding engineer should prepare a technical document containing • Type of welding to be used. • Type of electrode to be used in welding • The current and electrode polarities • The size of electrode to be used • The base material specification The PWPS, PQR and SWPS are prepared by the welding engineer and its execution is done by welding inspector WPQ (Welder Procedure Qualification) The contractor has to propose a welder. The welding inspector have the authority to qualify the welder, he has to review the history records of the welder. Once the history records are satisfactory then he is permitted by the welding inspector to prepare the test coupon. Then coupon is subjected to visual examination. Once the visual examination is satisfactory then it is subjected for NDT or DT. If the NDT or DT is satisfied then welder issues a welding certificate with a validity of 6 months. If welder disqualifies a new welder will be proposed by the contractor or the welder has to prepare the test coupon, so get more videos subscribe ,Share and press bell notification . Thanks .