Alert

Due to a lapse in appropriations, the NRC has ceased normal operations. However, excepted and exempted activities necessary to maintain critical health and safety functions—as well as essential progress on designated critical activities, including those specified in Executive Order 14300—will continue, consistent with the OMB-Approved NRC Lapse Plan.

Health Physics Questions and Answers - Question 85

Question 85: In §20.1902, posting of areas is based upon "dose equivalent." Is this "deep," "shallow," "lens of eye," "total effective" or some combination of the above?

Answer: These posting requirements are based on the deep dose equivalent for "radiation areas" and "high radiation areas" and the absorbed dose at a tissue depth of 1 cm (1000 mg/square cm) for "very high radiation areas." See the answer to Question 74.

References: 10 CFR 20.1003, 10 CFR 20.1902)

Page Last Reviewed/Updated Wednesday, December 13, 2017