ASNT Industrial Radiography Radiation Safety Practice Test

What is the transport index limit for a Yellow II transport label?

1. Less than 0.5

2. 1

3. 5

4. 10

The correct answer is: 1

The transport index for a Yellow II transport label is established to ensure safety during the transportation of radioactive materials. With a transport index of 1, the label indicates that the radiation level at one meter from the surface of the package does not exceed 0.2 mSv/h (milliSievert per hour). This value is essential because it reflects a level of radiation that is considered manageable for transport or handling, ensuring that those involved are not unduly exposed to radiation while respecting safety protocols. The designation of Yellow II specifically signifies materials that present a higher level of radiation risk compared to a Yellow I label, which has a transport index of less than 0.5 and reflects an even lower radiation level. Consequently, the Yellow II label indicates a moderate risk level, still within safe limits for transport. Understanding the transport index is crucial for professionals working with radioactive materials to adhere to regulatory standards for safety and health during transport. This knowledge ensures compliance with regulations and promotes awareness of potential hazards, thereby safeguarding both personnel and the public.