Application of digital techniques to a nuclear reactor safety monitor for the liquid metal fast breeder reactor.
Elrod, Stephen Anthony.
Cotton, Mitchell L.
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This paper demonstrates a nuclear reactor safety monitor incorporating hard-wired, redundant, digital program modules that control independent, redundant, digital monitor modules. One monitor module is used for each parameter significant to reactor safety. The characteristics of a proposed LIQUID METAL FAST BREEDER REACTOR are used as the reference performance criteria. The established criterion that a single failure must not prevent reactor shut down is used as the failure mode criterion. Within the program module, a programmable read-only memory (PROM) is used for sequence control of another PROM containing variable length subroutines. The subroutine PROM outputs are used as photo-isolated logic outputs for sequence control of the various monitor modules. The program module action is modeled on a digital computer. A four-input digital monitor module is developed. This module provides a shut down signal if three of the inputs exceed the parameter limit.
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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