Is 100% flaw detection absolutely required when the support pad covers the cylinder ring seam?
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I would like to ask everyone: is it necessary to perform 100% flaw detection when the support pad covers the ring seam of the cylinder? (The medium is saturated steam, and the pressure is not high either.)
It is required by the standards; we should abide by them. There is a reason behind these requirements, so it’s advised not to get stuck on such details
Yes, and it is recommended to conduct a gas-tightness test on the gasket. Similar to a reinforcement ring. http://vcad.blog.163.com/blog/static/2157050802013826935942/
150 specifies that 100 inspections are required
This is mainly to take into account the fact that if there are welding defects in the covered welds, which lead to leaks, it will be difficult to locate the source of the leak. Moreover, it becomes even more challenging to carry out repairs. It’s better to follow the standards.
I want it! Whether it is full NDT or partial NDT, when the support pad covers the ring seam of the cylinder, 100% inspection must be carried out!