Issues regarding the supervision and inspection of pressure vessels that fall outside the scope of supervision and inspection specified in the Regulatory Code

1. Regarding the first question, the owner can make requests, but the inspection agency has the right to refuse to issue a certificate in accordance with the Fixed Equipment Regulations, as these regulations are specifically aimed at special equipment. 2. The second question is similar to the first: the inspection agency has the right to refuse to issue a certificate, but it can coordinate the conduct of an entrusted inspection and issue a certificate based on the results of that inspection. 3. Thirdly, the drawings cannot be provided by the component manufacturer. Since the component is part of a pressure vessel, the manufacturing process for such vessels starts with the user’s technical requirements; that is, the user provides the technical specifications, the design agency carries out the design, the manufacturing unit produces the vessel, and it is then delivered to the user. Components are outsourced only when the manufacturing unit does not have enough time to produce them.

The first question: Regarding the supervision and inspection of our special equipment, the supervising agency carries out administrative supervision functions on behalf of **, and it is not a third party hired by the owner; the inspection certificates must be issued in accordance with the requirements of safety technical specifications. The second question is different: since it is a container within the scope of supervised inspection, its pressure-bearing components should also fall under this supervised inspection. The supervision of such pressure-bearing components that are manufactured separately can be carried out by the inspection agency located in the place where the component manufacturer is situated, or by an inspection agency based at the container manufacturer’s location or at the site where maintenance or repairs are performed; this should be specified in advance. The third issue should be determined by the design unit responsible for the overall container, as to whether drawings will be provided or which standard manhole cover components will be used.

Inspection can be commissioned, but what is issued is a certificate of conformity, rather than an inspection certificate.

1 If it is not covered by the classification regulations, how can you classify the equipment? And without classification, how can a supervision and inspection certificate be issued? The units responsible for supervising and inspecting manufacturing processes are also considered third-party inspection agencies, and they charge fees; you can discuss such matters with them. After all, the goal is to be stricter, not looser. 2. For flanges, heads, and other components that are purchased from external suppliers, they come with their own inspection certificates; you just need to ensure proper supplier control and carry out acceptance checks upon arrival at the factory. 3. In principle, the party that manufactures the component is responsible for deploying it. If that component is part of your container, and that container is delivered as a complete unit, then you still have the right to design it; in such cases, a stamped overall diagram can be used, and that component can be treated as an externally purchased part.

The owner’s request seems a bit unnecessary; for devices that are not subject to regulation, issuing certificates in accordance with the relevant standards is generally useless, unless there are special requirements. It would be possible to discuss this with the owner (devices that are not subject to regulation do not require those certificates issued by inspection agencies for their installation and use)

Some owners are not very clear about the regulations regarding the supervision and inspection of special equipment such as pressure vessels, and for safety reasons or to protect themselves from liability, they may put forward additional or unnecessary requirements. In order to secure the contract, the seller’s sales staff usually try to meet the buyer’s requirements as long as it isn’t a fundamental issue, and then refer the matter to departments such as technical support and quality assurance for handling. Our special inspection agency’s response is: 1/2. For items that fall outside the scope of mandatory inspection, the commissioning of inspection procedures can be followed to obtain a certificate of conformity, rather than the inspection certificate required by regulatory standards. 3. For pressure vessel components (parts) for which certificates are issued separately, their design documents can be prepared by any entity qualified to carry out designs of that category, with the design seal affixed. This requirement also applies to pressure vessel modification projects. Regarding the category of pressure vessels, in my opinion, since they are not within the scope of supervision and inspection under pressure vessel regulations, it does not violate these regulations regardless of which category is used for design, manufacturing, and inspection; the category should be determined through consultation between the designer and the owner. Furthermore, although there are regulatory provisions, inspection agencies in different regions may have varying interpretations, and the requirements in practice may differ slightly.

Of course, no inspection report will be provided; if it’s truly necessary, high parameters must be used to stay within the specified range

The owner asked for so much on their own initiative. . . It can’t be a requirement from the safety pre-assessment; it’s just something conveyed by the owner: L

Agree with the second-floor view. For anything that is not required by regulations but which the owner insists on, the owner can simply issue a commission request and cover the costs themselves, right?:lol