United States Nuclear Regulatory Commission - Protecting People and the Environment

U.S. Nuclear Regulatory Commission

Question 207: The dose limits for an individual member of

the public as specified in 10 CFR 20.1301 are specified in

terms of rem. Since rem is an absorbed dose, must an

individual be present for the dose limit to apply?

Answer: No. If using 10 CFR 20.1302 (b) (1) to show

compliance with dose limits, occupancy times (time an

individual is present) may be taken into account. If using

the method in 10 CFR 20.1302 (b) (2) (ii) to demonstrate

compliance, dose is calculated as if an individual were

continuously present, regardless of whether an individual

is continuously present. See related Questions 68, Set 2,

and 102 Set 3. (Reference: 10 CFR 20.1302, 10 CFR 20.1301)

Page Last Reviewed/Updated Thursday, March 29, 2012