Bioenvironmental Engineering Apprentice (BEA) Block 7 – Ionizing Radiation Practice Test

What is the annual dose limit to any tissue except the lens of the eye?

5 rem 50 rem 500 rem 15 rem

Correct Answer:

50 rem

Explanation:

In radiation protection, dose limits are defined per tissue or organ. The lens of the eye has its own tighter limit due to cataract risk, and the whole-body limit is separate. For all other tissues, the annual limit is 50 rem. So the correct interpretation for any tissue except the lens is 50 rem per year. The other numbers correspond to different limits: 5 rem is the whole-body limit, 15 rem is the lens limit, and 500 rem isn’t a standard occupational limit.

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