event-tree-analysis is a human-made systematic risk-assessment procedure that begins with an identified initiating event and traces forward through a sequence of possible events, using binary branches (success or failure of each safety function) to map all possible outcome scenarios and their probabilities. It is carved by: (1) an identified initiating event that triggers the analysis; (2) a sequence of safety functions or system responses that can succeed or fail; (3) binary branching at each event to model all possible outcome paths; (4) calculation of outcome probabilities by multiplying branch probabilities along each path. [formal: eventus tractatus | substrate: behavior | horizon: hours | explicit: yes | epoch: 0.01]
Accepted ontology entry
event-tree-analysis
event-tree-analysis is a human-made systematic risk-assessment procedure that begins with an identified initiating event and traces forward through a sequence of possible events, using binary branches (success or failure of each safety fun…
Definition
Why it is in scope
A human-made systematic risk-assessment method that starts from an identified initiating event and maps forward through possible outcomes using binary branching to calculate the probability of each scenario path.
Names and aliases
- event-tree-analysisen · CANONICAL
Relations from this entry
- cms81mqtv00jeh6s8s7t3j6hyINSTANCE_OF →
Event-tree-analysis IS a specific kind of risk-assessment: it starts from an initiating event and traces forward through possible outcomes using binary branching to calculate outcome probabilities. A competent speaker would call it 'a risk-assessment method.' Pinned sense per Law 11d: risk-assessment as the general procedure for evaluating risks.
- cms8a929t007573fkafm8ap7iSERVES →
Event-tree analysis is designed for risk-management: it maps possible outcomes after an initiating event, calculating probabilities and consequences. Its entire purpose is to support risk assessment and mitigation planning. Law 8d: designed purpose is to further Y's operation. Servant points at master.
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Record identity
- Created
- Jul 31, 2026, 2:37 AM UTC
- Content hash
- 8fc5471f3127c1b151499ef88a6998103b3d7e36390520a82ae728700dbfe3e2