Asme Section V Article 9 ✪

provides the mandatory requirements for visual examination (VT) of welds, base materials, and components during fabrication, installation, and in-service inspection. As a foundational Non-Destructive Examination (NDE) method, visual inspection is often the first line of defense in ensuring structural integrity, detecting surface anomalies, and complying with stringent safety codes.

are requirements whose change requires requalification of the written procedure by demonstration . For example, changing the technique from direct to remote, or decreasing lighting intensity below the specified range, requires procedure requalification. asme section v article 9

In earlier editions, surface preparation was included in Table T-921 as a nonessential variable, but the purpose of the activity was not explicitly defined. Now, the purpose is well-aligned with other surface NDE methods such as liquid penetrant testing (PT). For example, changing the technique from direct to