Review of the Oconee-3 probabilistic risk assessment. Containment performance, radiological source terms and risk estimates. Volume 3

Technical Report · Sun Jun 01 04:00:00 EDT 1986

OSTI ID:5578138

Park, C K; Agrawal, A K; Khatib-Rahbar, M; Pratt, W T

A technical review of the Oconee-3 Probabilistic Risk Assessment (OPRA) has been performed with the objective of evaluating containment response, radiological source terms, and off-site consequences. In the OPRA study, a detailed structural analysis for determination of ultimate failure pressure of the containment has not been performed. A sensitivity study shows that the off-site consequences as well as the frequencies of release categories can be changed by a large magnitude depending on the assumptions used on the distributional parameters and the probabability of containment isolation failure. The assessment of the OPRA shows that very late overpressurization failure is the dominant containment failure mode. The OPRA radiological releases are comparable in magnitude to those used in other recent studies. Cost-effectiveness analysis by a multiobjective optimization approach suggests that various containment safeguards are designed to provide adequate safety margins for severe accidents.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5578138
• Report Number(s): NUREG/CR-4374-Vol.3; BNL-NUREG-51917-Vol.3; ON: TI86013344
• Country of Publication: United States
• Language: English

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