Is welding behind the saddle feasible?
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After the cylinder is pressurized, can we then weld the saddle gasket plate (the gasket plate is welded to the cylinder)? Is that feasible?
Without welded saddles, is it convenient to place the equipment when conducting pressure tests? This approach won’t work if the entire equipment is to undergo heat treatment. If no heat treatment is applied, I think there should be no problem.
Sometimes it is due to the need to meet inspection deadlines, and other times it is to facilitate lifting and rolling in order to install the seal for the connection fitting.
There are two saddles at the location where we conduct pressure testing, but they are only used for temporary support. We don’t need heat treatment. I just think that testing for pressure first and then welding does not comply with the standard requirements.
If heat treatment is not used, welding is not required again after the hydrostatic test. Isn’t the jacket welded after the hydrostatic test?
https://bbs.hcbbs.com/thread-1853385-1-1.html There was actually a post; thank you all. The conclusion is: it can be welded. The repair depth should not exceed half; otherwise, conduct another pressure test.
The standards are clearly stated: all welding and inspection work must be completed before the pressure test. . .
Because the jacket still needs to be pressurized with water after welding.