Difference between revisions of "Common Cause Failure"
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* The function of multiple CI is disrupted or destroyed by the same cause or hazard affecting the CI at the same location or area in the same time frame (e.g., a hurricane blocking roads and affecting telecommunication and power lines; a collapsed bridge which blocks inland shipping, road transport and caused disruption of gas, power and telecommunication lines) | * The function of multiple CI is disrupted or destroyed by the same cause or hazard affecting the CI at the same location or area in the same time frame (e.g., a hurricane blocking roads and affecting telecommunication and power lines; a collapsed bridge which blocks inland shipping, road transport and caused disruption of gas, power and telecommunication lines) | ||
* Item failures result from a single shared cause and coupling factor (or mechanism) | * Item failures result from a single shared cause and coupling factor (or mechanism) | ||
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==Definitions== | ==Definitions== | ||
<!-- This section presents all available definitions of the above term.--> | <!-- This section presents all available definitions of the above term.--> | ||
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=== European Definitions === | === European Definitions === | ||
Revision as of 21:00, 14 July 2014
A common cause failure (CCF) is a failure where:
- The function of multiple CI is disrupted or destroyed by the same cause or hazard affecting the CI at the same location or area in the same time frame (e.g., a hurricane blocking roads and affecting telecommunication and power lines; a collapsed bridge which blocks inland shipping, road transport and caused disruption of gas, power and telecommunication lines)
- Item failures result from a single shared cause and coupling factor (or mechanism)
Contents
Definitions
European Definitions
Other International Definitions
United Nations’ Definition
National Definitions
Standard Definition
Discussion Topic
See also
geographically dependent - incorrect term often used for Common cause failure
Notes
