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The Ionising Radiations Regulations 2017
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9. Without prejudice to paragraph 8—E+W+S
(a)the limit on equivalent dose for the lens of the eye is—
(i)20 mSv in a calendar year; or
(ii)in accordance with conditions approved by the Executive from time to time, 100 mSv in any period of five consecutive calendar years subject to a maximum equivalent dose of 50 mSv in any single calendar year;
(b)the limit on equivalent dose for the skin is 500 mSv in a calendar year as applied to the dose averaged over any area of 1 cm2 regardless of the area exposed;
(c)the limit on equivalent dose for the extremities is 500 mSv in a calendar year.
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