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ShowingImportancePrizesTopicHazard identification5 claims

The activity of identifying hazards for safety analysis and assurance — techniques (HAZOP, FMEA, STPA, hazard lists) and the completeness of the resulting hazard sets. Covers claims about whether identification methods miss hazards and how such gaps affect downstream safety arguments; excludes quantified risk-estimation claims (see Probabilistic risk assessment).

Major safety assurance failures often involve hazards that were identified but inadequately assessed or controlled
UnassessedNo current assessment. Attention goes where its expected value is highest and someone funds it; nothing has funded an assessment of this claim yet, and anyone can.constitutionempirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitutionSafety assuranceimportance · minorImportance 0.35, from 0 to 1 · minor: narrow or largely settled, cheap to get right. Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution
Traditional hazard analysis techniques miss hazards arising from component interactions in complex software-intensive systems
UnassessedNo current assessment. Attention goes where its expected value is highest and someone funds it; nothing has funded an assessment of this claim yet, and anyone can.constitutionempirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitutionComponent interaction hazardsSafety assuranceimportance · minorImportance 0.35, from 0 to 1 · minor: narrow or largely settled, cheap to get right. Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution
Accident investigations frequently find hazards that prior hazard analyses failed to identify
UnassessedNo current assessment. Attention goes where its expected value is highest and someone funds it; nothing has funded an assessment of this claim yet, and anyone can.constitutionempirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitutionSafety assuranceimportance · minorImportance 0.35, from 0 to 1 · minor: narrow or largely settled, cheap to get right. Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution
Incomplete hazard identification is a principal cause of safety assurance failures
SupportedEvidence favors the claim, but the chain is incomplete or the sources are secondary.constitutionempirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitutionSafety assuranceimportance · minorImportance 0.35, from 0 to 1 · minor: narrow or largely settled, cheap to get right. Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution
The Nimrod Review found the Nimrod safety case was a paperwork exercise that missed key dangers
UnassessedNo current assessment. Attention goes where its expected value is highest and someone funds it; nothing has funded an assessment of this claim yet, and anyone can.constitutionempirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitutionSafety assuranceNimrod Reviewimportance · settledImportance 0.20, from 0 to 1 · settled: uncontested, so low even when much depends on it. Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution

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