Fault Tree Analysis: applied decision
Trace a mission's top failure event through shared dependencies and testable safeguards.
30 minutes
Scenario
An orbital habitat risks losing breathable air. Two nominally independent scrubbers share a power bus, while manual fallback depends on the same alarm.
- Your role
- Decision owner with responsibility for affected people
- Method
- Fault Tree Analysis
Evidence pack
Situation
An orbital habitat risks losing breathable air. Two nominally independent scrubbers share a power bus, while manual fallback depends on the same alarm.
Method constraint
Drawing only component failures while ignoring shared power, human response and unknown modes; inventing precise probabilities.
Constraints
- State assumptions and protect affected people.
- Do not treat the method artifact as causal proof.
Case steps
Work through each prompt using the evidence pack. These guided cases support self-directed practice; server-scored attempts are not available yet.
Frame the decision and identify the affected actors and evidence gaps.
Apply the method to compare at least two interpretations or responses.
Choose one bounded next test, its owner, safeguard and rejection signal.