Probability of the iodine spike release rate during an SGTR [electronic resource].
- Published
- Rockville, Md. : U.S. Nuclear Regulatory Commission, 1989.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description
- 70 pages : digital, PDF file
- Additional Creators
- U.S. Nuclear Regulatory Commission and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access
- Free-to-read Unrestricted online access
- Summary
- The Nuclear Regulatory Commission (NRC) requires utilities to determine the response of a pressurized water reactor (PWR) to a steam generator tube rupture (SGTR) as part of the safety analysis for the plant. The SGTR analysis includes assumptions regarding the presence of fission product iodine in the reactor coolant resulting from iodine spikes. Due to uncertainties in the consequences, the NRC has designated this class of accident as a generic safety issue. To get a better understanding of iodine spiking, reactor trip and associated radiochemistry data were collected from 26 PWRs. These data were compared against validation criteria to determine their applicability to an investigation of the magnitude of an iodine spike following a reactor trip. The applicable data and the results of a statistical analysis are presented. Conclusions are made concerning the magnitude of an iodine spike during an SGTR and these are compared with the NRC analysis criteria. The conclusion is made that the iodine release rate specified for analysis of an SGTR is overly conservative and could be reduced significantly while still maintaining adequate protection to the public. The formalism required by the Standard Review Plan in determining the release rate is judged to be inappropriate and an absolute release rate, based on plant electric power, is recommended as a replacement. A value of 0.710 Ci/h*MW(e) is recommended for consideration as a replacement for the current iodine release rate specification for an SGTR with coincident iodine spike.
- Report Numbers
- E 1.99:egg-nerd--8648
egg-nerd--8648 - Subject(s)
- Other Subject(s)
- Note
- Published through SciTech Connect.
09/01/1989.
"egg-nerd--8648"
"DE93017396"
Adams, J.P.; Atwood, C.L.
EG and G Idaho, Inc., Idaho Falls, ID (United States) - Type of Report and Period Covered Note
- Topical; 09/01/1989 - 09/01/1989
- Funding Information
- AC07-76ID01570
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