Reactor shutdown system unavailability improvement by using a system of continuous data validation

Conference · Sun Jan 01 04:00:00 EST 1984

OSTI ID:6905138

Tzanos, C P

Objective is to show that the unavailability of the scram initiation function of the reactor shutdown system (RSS) can be significantly reduced by using a system of continuous data validation and manual scram as a redundant and diverse means of cutting off the power supply to the control rod drives. A continuous data validation system that can be used for that purpose is currently under development at Argonne National Laboratory and is envisioned to operate as follows. Direct sensor measurements of safety-important parameters are fed to the system every few seconds. These direct measurements and analytic measurements generated in real-time from an analytic plant model are compared for consistency. Through this comparison instrumentation and other plant component failures can be identified, and validated values of safety-important parameters can be generated even in the presence of a significant number of instrumentation common-cause failures.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6905138
• Report Number(s): CONF-840614-7; ON: DE84005428
• Country of Publication: United States
• Language: English

Related Subjects

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AVAILABILITY
BREEDER REACTORS
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
LIQUID METAL COOLED REACTORS
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REACTOR SHUTDOWN
REACTORS
SCRAM
SHUTDOWNS
TESTING
VALIDATION