Article 9 — Asme Section V

The key requirements of ASME Section V Article 9 are:

| Discontinuity Type | Acceptance Limit (Illustrative) | |------------------|--------------------------------| | Cracks | Not allowed | | Incomplete fusion or penetration | Not allowed | | Undercut | ≤ 1/32 in. deep (except where larger is permitted by referencing code) | | Porosity | Size and distribution per code case | | Surface roughness | No sharp notches (smooth blend required) | asme section v article 9

ASME V Article 9: Visual Examination Guide | PDF | Lighting - Scribd The key requirements of ASME Section V Article

Practical tip: Never inspect to “Article 9” alone. You must open the governing construction code for the “what is acceptable.” According to Scribd's VT guide , it is

Visual examination is often the first line of defense. According to Scribd's VT guide , it is one of the most cost-effective NDT methods but requires the highest level of inspector skill to interpret what is seen. Without Article 9’s standardized written procedures , a "clean weld" to one person might be a "ticking time bomb" to another.