ASNT Industrial Radiography Radiation Safety Practice Test

A leak test is considered failed if the sample returns a value greater than which of the following?

1. 0.002 μCi (74 Bq)

2. 0.005 μCi (185 Bq)

3. 0.010 μCi (370 Bq)

4. 0.015 μCi (555 Bq)

The correct answer is: 0.005 μCi (185 Bq)

In the context of industrial radiography and radiation safety, a leak test is performed to ensure that radioactive sources and related equipment are functioning properly without any leakage of radioactive materials. The values specified in such tests indicate the maximum permissible level of contamination that can be considered acceptable. The threshold for a failed leak test is set based on regulatory requirements and safety standards, which indicate that if the contamination level exceeds a certain limit, it is deemed unsafe. In this case, the threshold of 0.005 μCi (185 Bq) is the accepted limit for contamination in a leak test. If the sample returns a value greater than this threshold, it indicates a leakage or malfunction that requires immediate attention to prevent potential exposure to harmful radiation. Understanding this limit is crucial for radiographers, as it helps ensure the safety of personnel and the environment. The specific threshold numbers are established by safety regulations and guidelines to manage the risks associated with the use of radioactive materials effectively.