ASNT Industrial Radiography Radiation Safety Practice Test

A member of the public or unmonitored individual is allowed to receive up to, but not to exceed:

1. 5 mR/h, 200 mR/year

2. 2 mR/h, 100 mR/year

3. 1 mR/h, 50 mR/year

4. 10 mR/h, 500 mR/year

The correct answer is: 2 mR/h, 100 mR/year

The correct answer is based on regulations pertaining to radiation exposure limits for the general public as set forth by organizations like the National Council on Radiation Protection and Measurements (NCRP) and the U.S. Nuclear Regulatory Commission (NRC). For unmonitored individuals, typically, the maximum dose rate for exposures should not exceed 2 mR/h, and the annual dose limit is generally set at 100 mR/year. These limits are designed to ensure public safety by minimizing the potential health risks associated with radiation exposure. Keeping the dose at or below these thresholds helps to protect individuals who may inadvertently be near sources of radiation, such as in settings where industrial radiography is conducted. In this context, the other options represent dose rates or annual limits that exceed what is deemed safe for public exposure, which is why they are not considered acceptable. Therefore, the answer that indicates 2 mR/h and 100 mR/year aligns with established safety standards.