Operational Proceduresmedium#1041
The recommended annual dose limit for occupational exposure to cosmic radiation for aircrew is:
A
1 mSv
B
6 mSv averaged over 5 years, with 20 mSv in any single year
CorrectC
50 mSv
D
100 mSv
Explanation
ICRP recommends a limit of 20 mSv per year averaged over 5 years for occupational exposure, with no single year exceeding 50 mSv. EU regulations use 6 mSv/year as an investigation level.
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