Asme Section V Article 9 [2021] Site

The illumination must be verified at the start of the inspection, typically using a light meter (lux meter).

(e.g., Jaeger J-1 or equivalent) to ensure near-distance visual acuity. 2. Examination Techniques

Direct visual examination is performed when the inspector has an unobstructed line of sight to the target area. Article 9 enforces strict geometric limits to ensure human eye accuracy:

Remote visual examination uses cameras, borescopes, videoscopes, or fiber-optic probes to inspect internal surfaces or inaccessible areas. This technique is essential for inspecting: asme section v article 9

: Used when direct access is restricted; this involves borescopes, mirrors, or video cameras to project images for the inspector.

The procedure shall contain or reference a report demonstrating that the examination procedure was adequate. In general, , an artificial imperfection, or a simulated condition may be considered as a method for procedure demonstration.

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Checking weld reinforcement, joint alignment, and overall component dimensions.

Clear labeling of the specific item, weld joint, or batch inspected.

Personnel changes (provided the new inspectors hold valid qualifications). 3. Key Procedural Requirements The procedure shall contain or reference a report

ASME Section V is inherently a . It does not establish acceptance criteria or dictate when an inspection must occur. Instead, construction codes—such as ASME Section VIII for Pressure Vessels or ASME B31.3 for Process Piping—invoke Article 9 when visual examinations are mandatory.

According to Paragraph T-920, visual examinations must be conducted according to a written procedure. Written Procedure Requirements

The eye must be within 6 to 24 inches (150--600 mm) of the surface.

The written procedure must, as a minimum, contain the requirements listed in . These include:

Utilized when the target surface is inaccessible to the naked eye. This method employs optical aids such as mirrors, telescopes, borescopes, fiber optics, or digital cameras. 2. Essential and Nonessential Variables