The Programmable Logic Controller and its application in nuclear reactor systems
- Lawrence Livermore National Lab., CA (United States)
This document provides recommendations to guide reviewers in the application of Programmable Logic Controllers (PLCS) to the control, monitoring and protection of nuclear reactors. The first topics addressed are system-level design issues, specifically including safety. The document then discusses concerns about the PLC manufacturing organization and the protection system engineering organization. Supplementing this document are two appendices. Appendix A summarizes PLC characteristics. Specifically addressed are those characteristics that make the PLC more suitable for emergency shutdown systems than other electrical/electronic-based systems, as well as characteristics that improve reliability of a system. Also covered are PLC characteristics that may create an unsafe operating environment. Appendix B provides an overview of the use of programmable logic controllers in emergency shutdown systems. The intent is to familiarize the reader with the design, development, test, and maintenance phases of applying a PLC to an ESD system. Each phase is described in detail and information pertinent to the application of a PLC is pointed out.
- Research Organization:
- Nuclear Regulatory Commission, Washington, DC (United States). Div. of Reactor Controls and Human Factors; Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- Nuclear Regulatory Commission, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 10185827
- Report Number(s):
- NUREG/CR--6090; UCRL-ID--112900; ON: TI94000438
- Country of Publication:
- United States
- Language:
- English
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220400
42 ENGINEERING
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99 GENERAL AND MISCELLANEOUS
990200
COMPONENTS
ELECTRON DEVICES AND CIRCUITS
COMPUTER ARCHITECTURE
COMPUTERIZED CONTROL SYSTEMS
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ELECTRONIC EQUIPMENT
ENGINEERED SAFETY SYSTEMS
MAINTENANCE
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NUCLEAR POWER PLANTS
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REACTOR PROTECTION SYSTEMS
RECOMMENDATIONS