RT
Radiographic Testing
Summary
Uses X-rays or gamma rays to produce an image of the internal structure of a weld or component. Provides a permanent record.
Scope
Volumetric examination producing a visual record of internal weld quality.
Key Requirements
Governing Standards
- ASME Section V, Article 2
- AWS D1.1 Clause 6, Part E
- ISO 17636-1 (film)
- ISO 17636-2 (digital)
What It Detects
- Porosity (very good sensitivity)
- Slag inclusions
- Incomplete penetration
- Internal voids and inclusions
Limitations
- Radiation safety concerns
- Tight cracks perpendicular to beam may be missed
- Cannot inspect fillet welds effectively
Required Certifications
- ASNT Level II RT
- ISO 9712 Level 2 RT
- Radiation safety certification
Applicable Materials
Carbon SteelLow Alloy SteelStainless Steel 304Stainless Steel 316AluminumNickel Alloys
Applicable Processes
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