Is a supervision certificate required to purchase manholes on pressure vessels?
Thread Content
I would like to ask the experts here: The inspection agency hadn’t raised this issue before, but today it suddenly demanded that a supervision certificate be provided for the manholes to be purchased. The regulations state that only the individual pipe sections manufactured separately require supervision, but is it also necessary for manholes?
If the special inspection agency requests a supervision certificate for the manhole, it is likely because the manhole is considered an important component of the pressure vessel or a component related to safety. Generally, the requirements for inspection certificates depend on the design, materials, and purpose of the manhole, as well as whether it complies with specific safety standards. Although the code specifies that individually manufactured sections need to be inspected, inspection may also be required if the manhole serves as a pressure-bearing component or has a significant impact on the safety of the pressure vessel. It is recommended that you check the latest relevant regulations and standards, or consult a special inspection agency directly for accurate information. .
The manhole is a assembly that includes tube sections
It’s necessary; your manhole’s main pressure-bearing component has A/B seams on it, so it’s definitely required. Our factory has always requested the manufacturer to provide inspection certificates for the manholes we purchase