Evaluation of station blackout accidents at nuclear power plants: Technical findings related to unresolved safety issue A-44: Final report
''Station Blackout,'' which is the complete loss of alternating current (AC) electrical power in a nuclear power plant, has been designated as Unresolved Safety Issue A-44. Because many safety systems required for reactor core decay heat removal and containment heat removal depend on AC power, the consequences of a station blackout could be severe. This report documents the findings of technical studies performed as part of the program to resolve this issue. The important factors analyzed include: the fequency of loss of offsite power; the probability that emergency or onsite AC power supplies would be unavailable; the capability and reliability of decay heat removal systems independent of AC power; and the likelihood that offsite power would be restored before systems that cannot operate for extended periods without AC power fail, thus resulting in core damage. This report also addresses effects of different designs, locations, and operational features on the estimated frequency of core damage resulting from station blackout events.
- Research Organization:
- US Nuclear Regulatory Commission (NRC), Washington, DC (United States)
- OSTI ID:
- 5122568
- Report Number(s):
- NUREG-1032; ON: TI88011259
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BLACKOUTS
REACTOR ACCIDENTS
NUCLEAR POWER PLANTS
ENGINEERED SAFETY SYSTEMS
POWER LOSSES
PROGRESS REPORT
REACTOR PROTECTION SYSTEMS
RELIABILITY
RISK ASSESSMENT
ACCIDENTS
DOCUMENT TYPES
ENERGY LOSSES
LOSSES
NUCLEAR FACILITIES
POWER PLANTS
THERMAL POWER PLANTS
220900* - Nuclear Reactor Technology- Reactor Safety