FRANTIC-NRC; time-dependent system unavailability. [IBM370; FORTRAN IV]
FRANTIC-NRC was developed to investigate periodic testing schemes and operational and design modifications as they affect system unavailabilities and accident probabilities. The program calculates both the instantaneous and the average unavailability for any general system model and gives a breakdown of the unavailability contributions from failures, testing, and repair. Non-repairable components, monitored components, and periodically-tested components are considered. Accident sequences, such as those constructed from event trees, can also be evaluated for their instantaneous and average probability behavior. The name FRANTIC is an acronym for Formal Reliability Analysis including Normal Testing, Inspection and Checking. The code represents one extension of the probabilistic methodology described in WASH-1400. Testing characteristics which can be specified as input data include the test interval, test duration time, repair time or allowed downtime, the test override capability, test efficiency, and associated human-caused failure probabilities. The output consists of tables and plots of the system unavailability along with a breakdown of the unavailability contributions. Sensitivity studies can be performed.IBM370; FORTRAN IV; OS/370; 140K bytes of memory are required for execution.
- Research Organization:
- Nuclear Regulatory Commission, Washington, DC (USA). Office of Nuclear Regulatory Research
- OSTI ID:
- 6479479
- Report Number(s):
- ANL/NESC-766; ON: DE83048766
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
990200* -- Mathematics & Computers
ACCIDENTS
AVAILABILITY
COMPUTER CODES
COMPUTERS
ENGINEERED SAFETY SYSTEMS
F CODES
FORTRAN
IBM COMPUTERS
OPERATION
PROGRAMMING LANGUAGES
REACTOR ACCIDENTS
REACTOR OPERATION
REACTORS
RELIABILITY
SYSTEMS ANALYSIS
TESTING
TIME DEPENDENCE