ASNT Industrial Radiography Radiation Safety Practice Test

What is the maximum surface reading for a Yellow III labeled shipping container?

1. 50 mR/h

2. 200 mR/h

3. 300 mR/h

4. 1000 mR/h

The correct answer is: 200 mR/h

A Yellow III labeled shipping container is designated for the transport of radioactive materials that have a higher potential for radiation exposure. According to the regulations established by the Department of Transportation (DOT) and the International Atomic Energy Agency (IAEA), containers marked with a Yellow III label have a maximum surface radiation reading of 200 mR/h. This limit is significant because it allows for a balance between the safe transport of radioactive materials and the protection of individuals who may be exposed to the radiation emitted from these containers during handling and transport. The designation indicates that while the radiation levels are higher than those associated with a Yellow II container, it is still considered within acceptable limits for safety when proper handling protocols are observed. Understanding these classifications and limits is crucial for anyone involved in the transportation and handling of radioactive materials, as compliance with these standards is essential for ensuring safety and minimizing the exposure to radiation for workers and the public.