Progress in Medical Physics

Table. 5.

Table. 5.

External exposure dose limits specified by international organizations

Item Organization

ICRP NCRP 1RR 1999
Radiation-controlled areas
External exposure dose limit
Year 5 year average: 20 mSv 50 mSv 20 mSv
Accumulated dose 5 year average: 20 mSv, yearly maximum: 50 mSv 10 mSv×age 5 year average: 100 mSv, yearly maximum: 50 mSv
Dose-equivalent annual limit (skin and other organs)
Lens 150 mSv 150 mSv 150 (20) mSv
Skin 500 mSv 500 mSv 500 mSv
Hands, feet 500 mSv 500 mSv 500 mSv
General public areas
Effective annual dose limit
Continuous, frequent exposure 1 mSv 1 mSv 1 mSv
Non-frequent exposure - 5 mSv 5 mSv
Annual dose limit (skin and other organs)
Lens 15 mSv 15 mSv 15 mSv
Skin 50 mSv 50 mSv 50 mSv
Hands, feet - 50 mSv 50 mSv

ICRP, International Commission on Radiation Protection; NCRP, National Council on Radiation Protection and Measurements; IRR, Ionizing Radiation Regulations; -, not available.

Progress in Medical Physics 2021;32:83-91 https://doi.org/10.14316/pmp.2021.32.4.83
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