ASNT Industrial Radiography Radiation Safety Practice Test

What is the maximum surface reading allowed for a source changer?

1. 50 mR/h

2. 200 mR/h

3. 500 mR/h

4. 1000 mR/h

The correct answer is: 200 mR/h

The maximum surface reading allowed for a source changer being 200 mR/h is based on radiation safety standards that aim to limit exposure to personnel handling such equipment. This value is established to ensure that while performing operations involving radiation sources, the risk of excessive exposure is minimized. The rationale behind the 200 mR/h limit is to protect workers from cumulative radiation doses that could lead to potential health risks. By setting this threshold, safety protocols help to maintain an environment where the radiation exposure is kept at a level deemed safe for routine operations while still enabling the necessary radiographic processes. In the context of industrial radiography, monitoring radiation levels is crucial, especially for equipment that is regularly handled or changed. The designated maximum surface reading assists in determining if additional protective measures or modifications in handling protocols are needed to ensure worker safety and compliance with safety regulations.