What is the NCRP recommended annual effective occupational dose equivalent limit?

What is the NCRP recommended annual effective occupational dose equivalent limit?

• A. 5 rem (50 mSv)
• B. 1 rem (10 mSv)
• C. 10 rem (100 mSv)
• D. 0.5 rem (5 mSv)

Answer: (A)

The main idea is that there is a set cap on how much radiation a worker should receive in a year. The NCRP recommends a whole-body annual effective dose limit of 5 rem, which is equivalent to 50 mSv. This level is chosen to keep the lifetime cancer risk from occupational exposure at an acceptable level while allowing necessary work in medical settings. In SI terms, 50 mSv per year corresponds to 0.05 Sv. The other numbers don’t align with this guidance: they’re either below the recommended limit or exceed it. So the correct limit is 5 rem per year (50 mSv).

The main idea is that there is a set cap on how much radiation a worker should receive in a year. The NCRP recommends a whole-body annual effective dose limit of 5 rem, which is equivalent to 50 mSv. This level is chosen to keep the lifetime cancer risk from occupational exposure at an acceptable level while allowing necessary work in medical settings. In SI terms, 50 mSv per year corresponds to 0.05 Sv. The other numbers don’t align with this guidance: they’re either below the recommended limit or exceed it. So the correct limit is 5 rem per year (50 mSv).