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