Industrial Radiography Safety – Advantages & Disadvantages

Industrial radiography is a powerful non-destructive testing (NDT) method used to inspect materials for internal flaws using ionizing radiation such as gamma rays (Ir-192, Co-60) or X-rays. Due to its radioactive nature, radiography requires strict safety measures to protect workers, the environment, and the public.

✅ Safety Practices in Industrial Radiography

Use of shielded exposure devices (cameras) with approved source holders
Maintaining proper source storage in lead or depleted uranium containers
Monitoring worker dose using TLD badges and pocket dosimeters
Following time, distance, and shielding principles strictly
Safety interlocks, warning lights, and radiation survey meters must be operational
Only qualified radiographers with valid eLORA certification should handle sources
Emergency plans, signage, and safe working distance must be maintained

✔️ Advantages of Radiography

Can detect internal flaws without damaging the component
Provides permanent records (films or digital images)
Works on metals, welds, castings, and complex structures
Accurate detection of porosity, cracks, slag, lack of fusion, and inclusions
High reliability and global acceptance across industries (ASME, ISO, BARC, etc.)

⚠️ Disadvantages and Limitations

Radiation exposure risk to operators and nearby personnel
Special precautions, area barricading, and licenses required (eLORA)
Cannot easily detect planar defects oriented parallel to the beam
Requires trained professionals and calibrated equipment
Not suitable for thick sections beyond certain material densities

📌 Additional Safety Tips

Always carry a calibrated survey meter during every exposure
Inform local authority and display radiation signs during work
Never leave the source unshielded or unattended
Maintain logbooks, daily dose reports, and job authorization forms
Use remote handling tools to reduce direct exposure

This safety guide is written and maintained by D.N. Vijay for educational purposes under NDT QuizPro. No part of this material is copied from any website. Safe for blogging, SEO, and publishing.