In equipment renovation, determining how to modify the structure of the main stressed components is a key consideration
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Dear teachers: Does making a DN25 hole in the cylinder constitute a change to the structure of the main pressure-bearing element (the cylinder)? Does it fall under equipment renovation?
Of course not; if it’s a pressure vessel, reinforcement needs to be considered for the openings
Although it is generally calculated, rules are rules – the procedures must be followed, and calculation is still necessary.