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Which measures are available for protection against common cause failures (CCF)?

April 26, 2017cause CCF common failures measures

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Which measures are available for protection against common cause failures (CCF)?

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Failures of various units due to an individual event, where these failures are not based on a mutual cause, are known as common cause failures (CCF). Common cause failures should not be confused with similar failures. Estimating CCF and its implications is a quantitative process that should be applied to the entire system and take into account every safety-related component of the control system. To do this, measures are provided with associated values, based on an engineering assessment representing the contribution of each measure to reducing the common cause failures. The procedure for allocating points and quantifying measures against common cause failures should be based on DIN EN ISO 13849-1, Appendix F.