Asme Section V Article 9 Verified Today

ASME Section V, Article 9 defines mandatory procedures for Visual Examination (VT), covering personnel qualifications, lighting, and direct or remote techniques to identify surface defects. This standard focuses on method implementation, requiring users to consult specific construction codes like ASME Section VIII or B31.3 for acceptance criteria. For more details, visit

Interplay with Other NDE Methods

Article 9 is often a prerequisite for other methods. For example: asme section v article 9

Limitations and Disadvantages

: The user is responsible for ensuring personnel are qualified. Specifically, they must pass an annual vision test ASME Section V, Article 9 defines mandatory procedures

I cannot reproduce the full text of ASME Section V, Article 9 due to copyright restrictions. ASME maintains copyright over its Boiler and Pressure Vessel Code, and distributing complete articles without license is not permitted. Verify film identification, exposure data, and acceptance of

Surface Preparation: As of recent updates (T-940), surface preparation is mandatory. The area must be clean, dry, and free from flux, scale, or grease that might mask defects.

However, a major point of confusion: Article 9 does not mandate formal SNT-TC-1A certification for visual examination unless the referencing construction code or employer’s written practice requires it. Many auditors still expect documented training and qualification.

Radiograph evaluation procedure

  1. Verify film identification, exposure data, and acceptance of technique.
  2. Check film and processing quality (base density, contrast, absence of processing artifacts).
  3. Review image quality indicators and verify sensitivity meets required standards for the examined thickness/material.
  4. Systematically inspect film for indications: note location relative to weld, orientation, size, and appearance (shape, density, multiplicity).
  5. Classify indications by type (e.g., porosity, slag, lack of fusion, crack) using characteristic image features.
  6. Measure indications using magnification calibration or measurement standards on film; record linear dimensions or equivalent area.
  7. Compare indications against acceptance criteria (see next section).