Inspectors must be capable of distinguishing between colors or shades of gray used during the specific examination process. Illumination (Lighting) Thresholds
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.
Article 9 is unique because it does not mandate a detailed written procedure for direct visual examination (unlike RT or UT). However, for remote visual examination, a procedure is required. Practical wisdom suggests:
VT inspectors typically require certification to:
The eye must be positioned at an angle not less than 30 degrees to the surface being examined.
A radiographic report should include:
Direct inspection is performed when the eye can be placed within of the surface being examined.
By 2026, technology has integrated deeper into visual testing. While Article 9 remains strict, industry practice now often uses:
• Change in the brand or manufacturer of the lighting device.• Minor changes in recording formats or report layouts.• Alignment adjustments within the same device family. Minimum Procedure Content At a minimum, the written procedure must clearly define: The specific surfaces and components to be examined. The sequence of steps and timing of the examination.
Once referenced, all procedural, equipment, and qualification parameters detailed within Article 9 become legal and contractual obligations for the fabricator. Key Requirements of Article 9
Unlike other NDE methods that rely on advanced technology, VT is a method that can be performed by a trained inspector using eyesight, either directly or with the aid of simple tools, to assess surface conditions. Despite its simplicity, VT is strictly governed by detailed rules regarding lighting, access, surface preparation, and inspector qualifications to ensure consistency and reliability.
Asme Section V Article 9 |work| Jun 2026
Inspectors must be capable of distinguishing between colors or shades of gray used during the specific examination process. Illumination (Lighting) Thresholds
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.
Article 9 is unique because it does not mandate a detailed written procedure for direct visual examination (unlike RT or UT). However, for remote visual examination, a procedure is required. Practical wisdom suggests: asme section v article 9
VT inspectors typically require certification to:
The eye must be positioned at an angle not less than 30 degrees to the surface being examined. Inspectors must be capable of distinguishing between colors
A radiographic report should include:
Direct inspection is performed when the eye can be placed within of the surface being examined. Article 9 is unique because it does not
By 2026, technology has integrated deeper into visual testing. While Article 9 remains strict, industry practice now often uses:
• Change in the brand or manufacturer of the lighting device.• Minor changes in recording formats or report layouts.• Alignment adjustments within the same device family. Minimum Procedure Content At a minimum, the written procedure must clearly define: The specific surfaces and components to be examined. The sequence of steps and timing of the examination.
Once referenced, all procedural, equipment, and qualification parameters detailed within Article 9 become legal and contractual obligations for the fabricator. Key Requirements of Article 9
Unlike other NDE methods that rely on advanced technology, VT is a method that can be performed by a trained inspector using eyesight, either directly or with the aid of simple tools, to assess surface conditions. Despite its simplicity, VT is strictly governed by detailed rules regarding lighting, access, surface preparation, and inspector qualifications to ensure consistency and reliability.
