Asme Section V Article 9 |link| Link

The examiner’s eyesight must be tested annually. The standard test is the Jaeger (J) Test .

Inadequate lighting is the most common cause of missed flaws. Article 9 specifies that the light intensity at the surface of the component must be a minimum of . This applies to both natural and artificial light sources. The light intensity must be verified using a calibrated light meter prior to the inspection or proved through procedure demonstration. Surface Preparation

. It is the foundational standard for detecting surface-related discontinuities—such as cracks, porosity, and misalignment—that could compromise the integrity of pressure-retaining components. UBA Universidad de Buenos Aires 1. Scope and Core Purpose asme section v article 9

When physical constraints, extreme temperatures, or radiation hazards prevent direct access (such as looking inside a long pipe or a nuclear reactor core), remote visual examination is deployed.

ASME Section V, Article 9 defines the mandatory requirements for executing visual examinations. It is important to note that Article 9 does not establish the acceptance criteria for a component; instead, it provides the methodology, procedure requirements, and personnel qualifications necessary to perform a valid test. The specific acceptance standards (what constitutes a pass or fail) are found in the referencing code sections, such as ASME Section VIII (Pressure Vessels) or ASME Section III (Nuclear Components). Types of Visual Examination The examiner’s eyesight must be tested annually

ASME Section V, Article 9 (VT) is a mandatory code that dictates how visual examinations must be conducted when referenced by a "referencing code" (such as ASME Section III, VIII, or B31.3).

When access to a component is restricted by narrow entries, radiation, or physical hazards, remote visual techniques must be deployed. Article 9 specifies that the light intensity at

Changes in the maximum distance or angle allowed between the eye and the surface.

The accuracy of a visual examination relies entirely on the inspector's physical vision. Article 9 mandates strict vision testing for all personnel conducting these inspections.

Visual examination must be performed in accordance with a written procedure. According to Paragraph T-940 , minimum information must include: Scope of the examination. Method of inspection (direct or remote). Personnel qualifications. Surface preparation methods. Equipment used (e.g., lighting, gauges). Acceptance standards (e.g., ASME Section VIII, Div 1). B. Personnel Qualification