Defense-in-depth and diverse qualification of safety-critical software

  • Authors:

  • Horst Miedl;Jang-Soo Lee;Arndt Lindner;Ernst Hoffman;Josef Martz;Young-Jun Lee;Jong-Gyun Choi;Jang-Yeol Kim;Kyoung-Ho Cha;Se-Woo Cheon;Cheol-Kwon Lee;Gee-Yong Park;Kee-Choon Kwon

  • Affiliations:

  • Institut fuer Sicherheitstechnologie, Garching, Germany;Korea Atomic Energy Research Institute, Daejeon, Korea;Institut fuer Sicherheitstechnologie, Garching, Germany;Institut fuer Sicherheitstechnologie, Garching, Germany;Institut fuer Sicherheitstechnologie, Garching, Germany;Korea Atomic Energy Research Institute, Daejeon, Korea;Korea Atomic Energy Research Institute, Daejeon, Korea;Korea Atomic Energy Research Institute, Daejeon, Korea;Korea Atomic Energy Research Institute, Daejeon, Korea;Korea Atomic Energy Research Institute, Daejeon, Korea;Korea Atomic Energy Research Institute, Daejeon, Korea;Korea Atomic Energy Research Institute, Daejeon, Korea;Korea Atomic Energy Research Institute, Daejeon, Korea

  • Venue:
  • SAFECOMP'07 Proceedings of the 26th international conference on Computer Safety, Reliability, and Security
  • Year:
  • 2007

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Abstract

In the Korea Nuclear instrumentation and control (I&C) System (KNICS) project, a digital safety system including Reactor Protection System (RPS) and Engineered Safety Features-Component Control System (ESF-CCS) is developed. It is based on a safety grade Programmable Logic Controller (PLC) as a platform for the safety critical I&C systems. The software used in the digital safety system is classified as safety-critical, and it is qualified according to an appropriate lifecycle. This lifecycle includes design and qualification activities for the components and the system. In the KNICS project a defense-in-depth organizational structure for qualification is implemented based on different teams including 3rd party review teams. Each team uses diverse techniques, methods, and tools for their qualification tasks. Using the Korean KNICS project as an example, the results of Defence-in-Depth and Diversity (D3) qualification of safety-critical software are presented.