United States Nuclear Regulatory Commission - Protecting People and the Environment

U.S. Nuclear Regulatory Commission

Question 203: Can you have radiation levels in excess of 2

millirem in one hour or 100 millirem per year in a

controlled area if the public is not allowed to enter the


Answer: If the public is not allowed to enter for reasons

other than limiting radiation exposure, the answer is yes.

If the public is not allowed to enter in order to limit

radiation exposure and for other reasons, the answer is no.

As indicated in the answer to Question 26 (a), under the

discussion of "controlled area", when an area meets both

the definition of a controlled area and the definition of a

restricted area, the area is considered a restricted area

for purposes of compliance with Part 20. (Reference: 10

CFR 20.1301)

Page Last Reviewed/Updated Thursday, March 29, 2012