Article 9 of Section V is dedicated exclusively to Visual Examination, abbreviated as within the Code. While visual inspection is often the most straightforward NDE method, its proper execution is far from simple. The article outlines the methods and requirements for visual examination applicable when specified by a referencing Code Section. It details the types of visual examinations, the necessity for written procedures, and the qualifications required for personnel.
| Requirement | Essential Variable | Nonessential Variable | | :--- | :--- | :--- | | Change in technique (e.g., direct to remote) | X (Essential) | | | Lighting intensity (decrease only) | X (Essential) | | | Personnel qualifications | X (Essential) | | | Equipment or devices used for direct technique | X (Essential) | | | Configurations to be examined and base material forms | | X (Nonessential) | | Lighting equipment | | X (Nonessential) | | Surface preparation methods | | X (Nonessential) |
Organizations must develop a written procedure that addresses all Table T-921 requirements, including:
: Accurate inspection is impossible in the dark. Article 9 typically mandates a minimum light intensity, such as 100 foot-candles (1000 lux) , to reveal fine cracks or corrosion.
The American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code (BPVC) is a widely adopted standard for the design, fabrication, inspection, testing, and certification of boilers and pressure vessels. Section V of the ASME BPVC provides guidelines for the inspection, testing, and certification of boilers and pressure vessels. Article 9 of Section V specifically deals with the requirements for radiographic examination of welds.
An examination is incomplete without proper documentation. Article 9 outlines clear standards for evaluating findings and maintaining records. Acceptance Criteria
This article provides a detailed breakdown of Article 9, outlining its scope, procedural requirements, personnel qualification standards, and technical application parameters. 1. Scope and Applicability of Article 9