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Future Digital I&C Standards Recommendations for NPEC

This document outlines recommendations from the SC-6 committee regarding future digital instrumentation and control (I&C) standards within the Nuclear Power Equipment Committee (NPEC). Prompted by the NPEC Chair, the SC-6 convened to discuss essential topics, including digital safety system security, non-safety systems integration, and the application of smart sensors and actuators in nuclear power plants. The recommendations aim to enhance consistency with IEC standards, address gaps in classifications, and support the harmonization of I&C standards, covering advanced technologies like FPGAs and PLCs.

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Future Digital I&C Standards Recommendations for NPEC

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  1. SC-6 Recommendations for Future Digital I&C Standards Efforts in NPEC Daryl Harmon SC-6 Chair

  2. Background • Request to SC-6 from incoming NPEC Chair • Request for input from NPEC Chair for topics to consider for new Digital I&C standards • Feedback provided to SC-6 members prior to this meeting • Selection of topics at SC-6 meeting yesterday

  3. Recommended New Digital I&C Standards • Digital Safety System Security and Cyber Security • Must include non-safety systems • Will include design and software development • Will assess existing guidance first • Application of Smart Sensors and Actuators in NPP Safety Systems • Important to Safety Classification • Address the gap between Class 1E and Non-1E • Provide better consistency with IEC standards

  4. Recommended Additions to Digital I&C Standards • Address other technologies in addition to “digital computers” in IEEE Std. 7-4.3.2 • Field Programmable Gate Arrays (FPGA) • Programmable Logic Controllers (PLC)

  5. Planned I&C Standards Harmonization • IEEE Std. 497 Accident Monitoring Instrumentation • No equivalent in IEC • IEEE Std. 7-4.3.2 with IEC 60880 • Resolve independence issues between IEEE Std. 384 (physical) and IEEE Std. 7-4.3.2 (communications)

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