Guidance for Addressing Software Common cause Failure In High Safety-Significant Safety Related Digital I&c systems

Associated First Principles of Protection Against Software CCF

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• 9.2.3 Safe Design Objectives

Associated First Principles of Protection Against Software CCF • First Principle 6.1 - Software quality depends on complete and correct requirements, design and implementation • First Principle 6.2 - Concurrent triggering conditions are required to activate a latent software defect • First Principle 6.3 - The effects of a software CCF can be reduced by design 9.2.3 Safe Design Objectives 9.2.3.1 When platform software elements are integrated at the system level, subsystem level, or among other elements, they are integrated in accordance with a safety manual that complies with IEC 61508-2 Annex D or 61508-3 Annex D (for preexisting platform software elements. Download 1.39 Mb. Share with your friends: