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Calculations for the Release of Radioactive Patients From Radiation Safety Restrictions

R Wendt

R Wendt*, UT MD Anderson Cancer Center, Houston, TX

TH-B-217A-1 Thursday 9:00:00 AM - 9:55:00 AM Room: 217A

Radioactive patients may safely be released from radiation safety restrictions when the most exposed person is unlikely to receive more than 5 mSv (500 mrem) according to the United States Nuclear Regulatory Commission. NUREG 1556 Volume 9 Appendix U Revision 2 presents regulatory guidance that may be used to assure compliance with this limit. Although this risk-based approach is a big step forward from the prior activity-based release criteria, the methods in the regulatory guidance are arguably still quite conservative. Work such as that by the Radiation Dose Assessment Resource (RADAR) members shows that more realistic calculations may be used to release patients under the regulatory limit with less stringent restrictions.

This presentation should enable the audience to
1. Perform the calculations in the regulatory guidance
2. Characterize the conservatism in those calculations, and
3. Perform more realistic calculations

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