Issues with manhole openings in atmospheric pressure vessels
Thread Content
The company has a atmospheric storage tank; the original sampling port was located at the top, and sampling required opening the manhole at the top each time； Because working on the top of the upper and lower tanks is not very convenient ； The operator suggested making an opening at the side manhole of the tank to add a sampling port, which would facilitate sampling as well as the modification process. It is not clear whether such a modification complies with the regulations.
It’s not clear whether the specifications allow it. The strength should be fine.
It should be possible to weld a handhole for the manhole blind plate, after all, it’s at atmospheric pressure. . .
No problem, I’ve seen it done that way before
According to TSGR0003-2007, check whether your equipment qualifies as a simple pressure vessel; if not, it complies with legal regulations. However, such a change must be handled in accordance with the equipment change management process, requiring a design change