Relationship between the design qualification seal and the design date of the base map
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May I ask: Must the design date of the drawings fall within the validity period of the design qualification seal? If drawings from before the renewal are to be used after the renewal process, is it required to have them signed again entirely? How do large design institutes handle this?
For newly designed drawings, the signature date must fall within the validity period of the design qualification seal at that time; older drawings can be used without re-signing and do not require signing again. If the standard specifications on the drawings are outdated, then the drawings must be revised so that all of them comply with current standard specifications.
In practice, the design date can be moved forward``
If the current certificate has expired and a new one has not yet been issued (after going through procedures such as the renewal interview), the only option is to set the design date to any day before the old certificate expired. It’s normal to use the drawings from before the revalidation after it has taken place (for manufacturing units with design qualifications); there’s no need to sign anything again
It seems there are no regulations in this regard; once a new certificate is obtained, the previously designed drawings can no longer be used. There’s no such rule. The only requirement is that the drawings used for pressure vessel manufacturing must bear an official seal confirming valid design qualifications for pressure vessels. If that seal has expired, the drawings are invalid.
Our company passed the re-certification audit at the end of 2007, but we still haven’t received the new certificate; the date indicated on it is December 2007
Only the design time can be modified; that’s sufficient