Considerations for realistic ECCS evaluation methodology for LWRs
This paper identifies the various phenomena which govern the course of large and small break LOCAs in LWRs, and affect the key parameters such as Peak Clad Temperature (PCT) and timing of the end of blowdown, beginning of reflood, PCT, and complete quench. A review of the best-estimate models and correlations for these phenomena in the current literature has been presented. Finally, a set of models have been recommended which may be incorporated in a present best-estimate code such as TRAC or RELAP5 in order to develop a realistic ECCS evaluation methodology for future LWRs and have also been compared with the requirements of current ECCS evaluation methodology as outlined in Appendix K of 10CFR50. 58 refs.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA); Electric Power Research Inst., Palo Alto, CA (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5121496
- Report Number(s):
- BNL-NUREG-37036; CONF-851007-12; ON: TI86000027
- Resource Relation:
- Conference: 3. international meeting on reactor thermal hydraulics, Newport, RI, USA, 15 Oct 1985
- Country of Publication:
- United States
- Language:
- English
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