Interim external events integration for the EPRI ALWR requirements document WBS 4. 3. 3: Advanced Reactor Severe Accident Program
The Nuclear Regulatory Commission's Severe Accident Policy requires that a probabilistic risk assessment (PRA) be performed for all future nuclear power plant designs. In support of the Electric Power Research Institute (EPRI) Requirements Document effort, the Advanced Reactor Severe Accident Program has prepared interim PRAs based on the EPRI requirements for advanced pressurized water reactor and advanced boiling water reactor designs. These PRAs presently address internal initiating events (e.g., reactor trip,loss of off-site power, and loss-of-coolant accidents). This report identifies the external events that will be excluded from detailed quantitative analysis in the EPRI PRAs. In addition, the rationale and justification of inclusion or exclusion is provided. The conclusions drawn from the external event evaluations described in this report indicate seismic events need to be analyzed in detail in the EPRI PRAs. The effects of a tornado strike at the plant, resulting in a prolonged loss of off-site power, must also be considered. All other external events (including fire and flooding events) can be excluded from detailed quantitative analysis in the EPRI PRA based in improved plant design and siting criteria. However, the exclusion of many external events requires that a design and site verification be performed after a site and design are selected to ensure that the design and site do indeed meet the criteria used to exclude these events. 8 refs.
- Research Organization:
- EG and G Idaho, Inc., Idaho Falls, ID (United States)
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 6376227
- Report Number(s):
- DOE/ID-10227; ON: DE89009661
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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