Abstract: International atomic energy agency (IAEA) safety guideline, international electrotechnical commission (IEC) standard and institute of electrical and electronics engineers (IEEE) standard are the common international norms and technical basis of the design and review for digital instrumentation and control (I&C) system used in nuclear power plant, and some of those have been updated in recent years with technical requirements for the new issues for I&C. To update China’s standards for digital I&C and solve the problems in review, the applicability of updated international standards should be studied. Through systematic analysis, the update of these three norms above were introduced, and their technical requirements of human factors engineering, cyber security, commercial grade dedication were also introduced. In addition, the applicability of updated international standards and norms for the design and review for I&C system in China’s nuclear power plant was evaluated. The study has certain significance for the follow-up nuclear safety design and review as well as updating of relevant standards and norms.

Key words: digital instrumentation and control (I&C); standards and norms; technical opinion