Must the calculation sheets and risk assessment reports be stamped with the design institute’s seal?
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Regarding the three types of pressure vessels, design institutes are required to provide manufacturing companies with calculation sheets and risk assessment reports. As for whether these two documents must bear the design institute’s official seal, it seems that the practices of the two design institutes I’ve worked with differ; meanwhile, the manufacturing companies require that such documents have a red seal. Please give some advice!
Simply put, the tolerance specifications do not require a cover, so it is optional to include one.
We stamp the design unit’s red seal on both the calculation sheet and the risk assessment report.
Both the calculation sheet and the risk assessment report are stamped with the design unit’s red seal, which is in line with the opinion from the 3rd floor
If the risk assessment report is included in the directory of documents such as the calculation sheets (when it is covered there), it may not require a seal; otherwise, the design unit’s red seal must be applied separately
The calculation sheets and risk assessment reports should also be stamped with the design approval seal to make them more convincing; otherwise, what if someone uses fake calculation sheets and risk assessment reports instead? However, the Code for Fixed Containers does not contain any specific provisions requiring a cover to be installed.
We believe that all documents without signatures have no legal validity. There’s no need to look at anything that doesn’t have a signature.
In accordance with the Implementation Opinions of the Special Equipment Bureau (Quality Inspection Special Letter [2008] No. 50), only a permit stamp is to be affixed on the general layout plan. The others are not covered.
We only stamp on the overall blueprint. .