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Software based control system for nuclear reactor standby liquid control (SLC) logic processor

  • US 20050281368A1
  • Filed: 06/18/2004
  • Published: 12/22/2005
  • Est. Priority Date: 06/18/2004
  • Status: Active Grant
First Claim
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1. A method for a nuclear reactor safety related application, said method comprising:

  • executing two forms of a same application-specific logic, one of the two forms implemented as hardware logic, and another of the two forms implemented as software for execution by microprocessor-based controlling software, each form executed with a same set of inputs;

    comparing a result produced from the execution of the hardware-implemented form of application-specific logic to a result produced from the execution of the software-implemented form of application-specific logic;

    when the compared results concur, performing actions associated with the concurring results by executing microprocessor-based software; and

    when the compared results fail to concur, reporting the failure of the compared results to concur to an operator by executing microprocessor-based software, and thereafter placing the microprocessor-based software into an inoperative (INOP) mode.

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