Application of statistical combination of uncertainties to the Three Mile Island unit 1 flux/flow reactor trip setpoint
Journal Article
·
· Nuclear Technology; (United States)
OSTI ID:7169092
- GPU Nuclear Corp., Parsippany, NJ (United States)
- S. Levy Inc., Campbell, CA (United States)
- Electric Power Research Inst., Palo Alto, CA (United States)
This paper reports on typical reactor trip setpoints which established for the reactor protection system may be unduly restrictive, depending on how the uncertainties are handled in the plant safety analyses. The current deterministic approaches to establishing specific setpoints contain a substantial amount of conservatism, which can be reduced through the use of a statistical combination of uncertainties process. Using this approach for Three Mile Island Unit 1 indicates that the flux/flow trip setpoint can be relaxed to 1.1 from the existing technical specification value of 1.08. This provides an increased plant operating margin and reduction in the probability of spurious scrams.
- OSTI ID:
- 7169092
- Journal Information:
- Nuclear Technology; (United States), Journal Name: Nuclear Technology; (United States) Vol. 100; ISSN 0029-5450; ISSN NUTYBB
- Country of Publication:
- United States
- Language:
- English
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WATER COOLED REACTORS
WATER MODERATED REACTORS