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U.S. Department of Energy
Office of Scientific and Technical Information

PRA Applications Program for inspection at Arkansas Nuclear One, Unit 1

Technical Report ·
OSTI ID:5155156
The level one PRA for ANO-1 has been analyzed to identify plant systems and components important to minimizing public risk, as measured by system contributions to plant core melt frequency, and to identify the primary failure modes of these components. This information has been tabulated, and correlated with inspection modules from the NRC Inspection and Enforcement Manual. The report presents a series of tables, organized by system and prioritized by risk importance, which identify components associated with 98% of the inspectable risk due to plant operation. The systems addressed, in descending order of risk importance, are: DC Power, High Pressure Injection, Low Pressure Injection, Service Water, Reactor Protection, Emergency Feedwater, Vital AC Power, Safety Relief Valves, Main Feedwater, and Emergency Feedwater Initiation and Control. This ranking is based on the Fussel-Vesely measure of risk importance, i.e., the fraction of the total core melt frequency which involves failures of the system of interest.
Research Organization:
Pacific Northwest Lab., Richland, WA (USA)
DOE Contract Number:
AC06-76RL01830
OSTI ID:
5155156
Report Number(s):
NUREG/CR-5058; PNL-6394; ON: TI88007566
Country of Publication:
United States
Language:
English