How many levels of approval should be required for pressure vessel process documents?
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How many levels of approval should be required for pressure vessel process documents? Are there any specific regulations?
It is usually two levels: compilation + review； The special case is level 3, such as rework of welds due to defects
Thank you to the person above, :handshake
For process approval, personnel responsible for preparation, review, approval, manufacturing, inspection, as well as those in charge of standardization must all sign.
1. For pressure vessel process documents prepared by design institutes, for Class D pressure vessels, there must be three levels of approval: preparation, verification, and review； For pressure vessels of Class A, Class C, and SAD class, there must be four levels of sign-off: preparation, verification, review, and approval. 2. If it is a manufacturing plant’s process document for pressure vessel production, for Class D pressure vessels, secondary drafting and review along with signing are required ； For pressure vessels of Class A, Class C, and SAD class, there must be three levels of signing: preparation, review, and approval.
Signing process documents isn’t that complicated, right? Design institutes never produce process documents. The signing of process documents should be specified by the manufacturer! !
Generally, there are four stages: preparation, review, approval, and joint signature.
The process documents in our factory go through three levels of approval: preparation, proofreading, and review. However, inspections generally only apply to three types of pressure vessels.
The process documents prepared by the manufacturer go through four levels of approval: preparation, verification, review, and approval.
Generally, it involves preparation, review, joint approval, authorization, and implementation.
For general processes, there are typically three levels of approval: preparation, review, and authorization. Level 2 signing of general work documents, preparation, and review. Special process documents require three levels of approval; as mentioned above, this applies to cases where welds need to be reworked due to defects, as well as to pressure testing plans. None of the above is mandatory. However, in the case of rework due to weld defects being above acceptable standards, the pneumatic testing plan must be approved by the unit’s chief technical officer. It is specified in the Code for Pressure Vessels and GB150.
The preparation is signed by the process engineer, the review is signed by the responsible engineer – but what does the head of the process department sign?
Our company’s manufacturing process documents require three levels of approval: preparation, review, and authorization； The welding procedure document requires two levels of approval: preparation and review. The review is carried out by the responsible engineer, and in special cases, it is signed by the technical supervisor.