- Author
- Payne, A. C., Jr. | Eide, S. A. | LaChance, J. C. | Whitehead, D. W.
- Title
- Analysis of the LaSalle Unit 2 Nuclear Power Plant: Risk Methods Integration and Evaluation Program (RMIEP). Initiating Events and Accident Sequence Delineation.
- Coporate
- Sandia National Labs., Albuquerque, NM
- Sponsor
- Nuclear Regulatory Commission, Washington, DC
- Report
- SAND92-0537-VOL-4, October 1992, 118 p.
- Distribution
- Available from National Technical Information Service
- Keywords
- nuclear power plants | risk assessment | methodology | accident investigations
- Identifiers
- Probabilistic Risk Assessment (PRA); Risk Methods Integration and Evaluation Program (RMIEP); LaSalle Nuclear Power Plant; integrated quantification and uncertainty analysis; level 1
- Abstract
- This volume presents the results of the initiating event and accident sequence delineation analysis of the LaSalle Unit 2 Nuclear Power Plant performed as part of the Level 3 PRA being performed by Sandia National Laboratories for the Nuclear Regulatory Commission. The initiating event identification included a thorough review of extant data and a detailed plant specific search for special initiators. For the LaSalle analysis, the following initiating events were defined: eight general transients, ten special initiators, four LOCAs inside containment, one LOCA outside containment, and two interfacing LOCAs. Three accident sequence event trees were constructed: LOCA, transient, and ATWS. These trees were general in nature so that a tree represented all initiators of a particular type (i.e., the LOCA tree was constructed for evaluating small, medium, and large LOCAs simultaneously). The effects of the specific initiators on the systems and the different success criteria were handled by including the initiating events directly in the system fault trees. The accident sequence event trees were extended to include the evaluation of containment vulnerable sequences. These internal event accident sequence event trees were also used for the evaluation of the seismic, fire and flood analyses.