Understanding of Clause 5.3.1 (2) of the tolerance specifications
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Code Requirement 5.3.1 (2) The plans for modifying or carrying out major repairs on pressure vessels must be approved by the original design unit or a design unit with the appropriate qualifications. So, may I ask from which aspects should the design firm review the proposal? Such as how to handle the major repair plan for a patching equipment.
At least the most recent inspection reports for the equipment are required, so that the design team can develop a reuse plan based on various inspection parameters of the equipment.
If the equipment that requires major repairs no longer has its drawings, is it still necessary to design new drawings?
In my opinion, the first thing is the technical parameters related to renovation and maintenance, such as design pressure, design temperature, and other such parameters
Are pressure vessels without drawings still allowed to be used? Let alone having them repaired
Code Requirement 5.3.1 (2) The plans for modifying or carrying out major repairs on pressure vessels must be approved by the original design unit or a design unit with the appropriate qualifications. What kind of agreement is this? Is it to stamp after review, an official seal or a design seal? Should a written document be issued, stamped with the design seal?
The renovation plan prepared by the renovation unit must be approved by the design unit, which will affix its seal and sign in approval.