The NCRP-recommended annual occupational dose limit for localized areas of the skin, hands, and feet is

The NCRP-recommended annual occupational dose limit for localized areas of the skin, hands, and feet is

• A. 0.5 mSv
• B. 5 mSv
• C. 50 mSv
• D. 500 mSv

Answer: (D)

Focus on how dose limits differ by body region in occupational exposure. Localized areas like the skin, hands, and feet can tolerate a higher annual dose because these tissues can recover from damage in a small area, while the whole body is protected by a lower limit to limit systemic effects. The NCRP sets the annual limit for these localized areas at 500 mSv, which is ten times the whole-body limit of 50 mSv, reflecting that higher doses in a small region carry less risk to the entire body but can still cause local damage if excessive. The other numbers are not appropriate for localized areas: 50 mSv is the whole-body limit, and 0.5 mSv and 5 mSv are far too small for localized tissue exposure.

Focus on how dose limits differ by body region in occupational exposure. Localized areas like the skin, hands, and feet can tolerate a higher annual dose because these tissues can recover from damage in a small area, while the whole body is protected by a lower limit to limit systemic effects. The NCRP sets the annual limit for these localized areas at 500 mSv, which is ten times the whole-body limit of 50 mSv, reflecting that higher doses in a small region carry less risk to the entire body but can still cause local damage if excessive. The other numbers are not appropriate for localized areas: 50 mSv is the whole-body limit, and 0.5 mSv and 5 mSv are far too small for localized tissue exposure.