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Ji_Hyun_Lee_Thesis_FINAL.pdf (1.44 MB)

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A Regulatory Approach for Extending the Licensing Basis to Include Beyond Design Basis Events

Lee, Ji Hyun
http://rave.ohiolink.edu/etdc/view?acc_num=osu1370937698

Abstract Details

2013, Master of Science, Ohio State University, Nuclear Engineering.
This thesis describes a regulatory approach for extending the licensing basis for a nuclear power plant to include the consistent treatment of beyond design basis events. The approach is based on the use of a risk limit curve that is similar in concept to the limit curve approach first proposed by F.R. Farmer and examined in NUREG-1860 but which in contrast imposes an absolute limit on plant risk. Rather than comparing point estimates for the risk of events with the limit curve, the proposed approach provides a bound on the entire complementary cumulative distribution function for beyond design basis events. Two example applications are examined as case studies: the example application in Appendix E of NUREG-1860 and an example of a simple Level 3 risk assessment from a previous dissertation but here regarded within the context of conformance to a risk limit curve. The approach also applies a recently developed new performance indicator, the Limit Exceedance Factor (LEF), to identify those beyond design basis events to be included within the extended design basis and those to be considered residual risk. The LEF criterion also establishes performance measures to be demonstrated by the utility for safety-related systems, structures and components.
Richard Denning (Advisor)
Tunc Aldemir (Committee Member)
44 p.
Nuclear Engineering
LEF; Simplified Level 3 PRA; Risk limit curve; Event tree;

Recommended Citations

Citations

  • Lee, J. H. (2013). A Regulatory Approach for Extending the Licensing Basis to Include Beyond Design Basis Events [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1370937698

    APA Style (7th edition)

  • Lee, Ji Hyun. A Regulatory Approach for Extending the Licensing Basis to Include Beyond Design Basis Events. 2013. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1370937698.

    MLA Style (8th edition)

  • Lee, Ji Hyun. "A Regulatory Approach for Extending the Licensing Basis to Include Beyond Design Basis Events." Master's thesis, Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1370937698

    Chicago Manual of Style (17th edition)

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© 2013, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.