Description
The Cause-Consequence Diagram is developed from a certain initiating top event, i.e. an event that initiates a specific operational sequence or an event which activates certain safety systems. The Cause-Consequence Diagram consists of two reliability analysis methods previously elaborated, the FTA and ETA methods.
Effort
High
Complexity
High
Method Type
Quantitative
Semi-Quantitative
ISO 31000
Risk Analysis - Causes/Threats
Risk Analysis - Consequences
Risk Analysis - Likelihood
Risk Analysis - Severity
Prerequisites
- System or process descriptions must be available
- Documentation that can already provide information on the causes and consequences of failures should be available
Basic Approach
- carrying out a system analysis, i.e. close examination of the system and its interfaces
- definition of undesired events (errors)
- determination of consequences
- determination of the causes and failure probabilities if possible
Advantages
- Systematic presentation of the causes and consequences
- Measures for risk minimization can be derived
- Very comprehensive risk analysis
Disadvantages
- Training is necessary before the first execution
- The availability of resources must be guaranteed
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