What seals are required to obtain the pressure vessel design certificate (D1D2) for the first time?
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What seals are required to be available when obtaining a pressure vessel design certificate for the first time in order to oversee the design documents? Are there any different requirements for seals regarding grades D1, D2 and A1, A2?
Please refer to TSG R1001-2008 Regulations on Design Approval for Pressure Vessels and Pressure Pipelines
During evidence collection, there is no requirement for the use of any specific seals; TSGR1001-2008 also does not stipulate such a requirement. However, for future work to be carried out, basic seals are necessary, such as departmental seals, controlled seals, and void seals. The regulations regarding seals have nothing to do with the level of design approval.
Control stamps, drawing issue stamps (as-built drawings stamps, and what other stamps are there? ), the “review stamp” for external design documents, the reference stamp – these are the ones I know; what other stamps are there?