Nuclear Istrumentation and Control Systems Safety

Nuclear I&C Systems Safety - The Principles of Nuclear Safety for Instrumentation and Control Systems

• Legal and regulatory background (Atomic Act, NSC (Govt. Decree 118/2011), Govt. Decree 190/2011)
• OAH's (Hungarian Atomic Energy Authority) role and responsibilities
• IAEA's role and responsibilities
  • IAEA standards and guides
• IEC (International Electrotechnical Commission)
  • IEC standards for nuclear I&C systems
• Security categorization, security classification (IAEA, IEC and Hungarian)
• Main principles of nuclear I&C design
• Design for reliability of I&C systems important to safety:
  • The principle, the levels and the purpose of the defense in depth concept
  • The concept and tools of single failure tolerance
  • The concept of common cause failure, the means of avoiding it
    • independence
    • separation
    • diversity
  • Fail-safe design, safety orientation concept

Resources, background material:

• CORDEL Digital Instrumentation & Control Task Force (WNA): Safety Classification for I&C Systems in Nuclear Power Plants - Current Status & Difficulties
• IAEA Safety Standards Series No. SSG-30: Safety Classification of Structures, Systems and Components in Nuclear Power Plants (Specific Safety Guide)
• IAEA Safety Standards Series No. SSG-39: Design of Instrumentation and Control Systems for Nuclear Power Plants (Specific Safety Guide)

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Lecture slides: Nuclear I&C Systems Safety