Question regarding the validity period of weld evaluation reports
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I’d like to ask those with experience: for example, a weld qualification certificate from a certain manufacturing plant – if it’s from a long time ago, is a weld qualification certificate issued 20 years ago still valid? How long is the validity period? Based on the source?
As long as the important factors and supplementary factors remain unchanged, it should be effective.
It is valid indefinitely; there is no time limit specified for the standard. Unless the standard is abolished
The current valid version of the welding assessment standards for pressure equipment is the 2011 edition; the original welding assessments must be converted in accordance with this version. Moreover, the material standards have changed as well, and many of the old welding evaluations are no longer suitable.
Yes, it is necessary to carry out the conversion of standards, including changes in the names of some material grades.
Got it: materials, welding, welding consumables. . As long as one factor criterion changes, the original weld assessment becomes invalid