Is flaw detection required after repairing damaged pipes?
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Dear experts: For stainless steel pipes containing cryogenic liquids, with a wall thickness of 6 mm, during the grinding process, the base material in the non-welded areas was accidentally damaged, resulting in a dent about 3 mm deep and approximately 20 mm long. Is it necessary to conduct flaw detection after filling and grinding such defects? Are there any corresponding standards? Thank you!
From personal experience, it’s not necessary; I’m not aware of any specific standards. A 3mm deep pit. . . . . .
Penetration testing can be carried out; its main purpose is to detect any surface cracking defects.