Evaluation of severe accident risks and the potential for risk reduction: Surry Power Station, Unit 1: Draft report for comment
The Severe Accident Risk Reduction Program (SARRP) has completed a rebaselining of the risks to the public from a particular pressurized water reactor with a subatmospheric containment (Surry, Unit 1). Emphasis was placed on determining the magnitude and character of the uncertainties, rather than focusing on a point estimate. The risk-reduction potential of a set of proposed safety option backfits was also studied, and their costs and benefits were also evaluated. It was found that the risks from internal events are generally lower than previously evaluated in the Reactor Safety Study (RSS). However, certain unresolved issues (such as direct containment heating) caused the top of the uncertainty band to appear at a level that is comparable with the RSS point estimate. None of the postulated safety options appears to be cost effective for the Surry power plant. This work supports the Nuclear Regulatory Commission's assessment of severe accidents in NUREG-1150.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Nuclear Regulatory Commission, Washington, DC (USA). Div. of Reactor Systems Safety
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6658846
- Report Number(s):
- NUREG/CR-4551-Vol.1; SAND-86-1309-Vol.1; ON: TI87006468
- Country of Publication:
- United States
- Language:
- English
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