Important Checks for Liquid Penetrant Examination in High-Pressure Vessel Seams
https://ultrasonic-tank-methods.theglensecret.com/a-practical-guide-to-weld-acceptance-rules-for-pressure-vessel-fabrication
Important Checks for Liquid Penetrant Examination in High-Pressure Vessel Seams Vessels include long seams, girth welds, nozzles, and attachments. Penetrant testing can reveal open-to-surface flaws in suitable nonporous materials