Health Physics Questions and Answers - Question 111

Question 111: Section 20.105 (a) of 10 CFR Part 20 provides for Commission authorization of radiation levels in unrestricted areas based on a criterion of 500 millirems in one year to an individual in such areas. Does such an authorization for radiation levels in an unrestricted area excess of 100 millirems in a year continue under 10 CFR 20.1301 (c)? In other words is this considered an "exemption" as covered in 10 CFR 20.1008 (d)?

Answer: No and No. The nature of the information requested under 20.1301 (c) is different from that requested under 20.105 (a) in that 20.1301 (c) requires a demonstration of need for the proposed dose limit and procedures for maintaining doses ALARA. It may be appropriate for an applicant to refer to information submitted under 20.105 (a) as part of an application submitted under 10.1301 (c).

(References: 10 CFR 20.1301 (c), 10 CFR 20.1008 (d), and 20.105 (a))