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Excess load routinesTruck Companies
Unsafeheuristics
Capts Planning
Combinatorial structureof possible accidentscan easily be identified.
very likely will not see the forestfor the trees.
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TopDown Accident Analysis:
BottomUp OperationalDecision Making:
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Protective barriers to control flowafter release of hazard. Acceptabledowntime of individual barriersselected according to predictedoverall risk of major accidents.
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major energy balance
Government
of evaluation philosophy
Staffing and managementperformance as assumed for riskanalysis. Explicit priority rankingwith reference to risk analysis.
Safety reviews, accident analyses,comparisons across branches,international state of the art.
Regulators, Branch Associations
Industry standards, operational Incident reports, review of companypractices, organizational structureand internal audit practice and results
Acceptance criteria, industrystandards and regulations
Documentation of system designbasis, analysis of accident scenarios,prediction of overall risk to society.
System OperationSystem Design
and Analysis
CompanyOperational reviews with emphasison compliance with preconditionsfor safe operation.staffing, and work resources
management performance, plantCompany policy with respect to
Management
Workload and plan evaluations.and unusual occurrences. maintenance of defenses, incidents, Logs and work reports emphasizing
according to safety preconditions.specifications. Work plans work resources according toStaffing, competence, and
maintenance.operational practice, in particular forrespect to staffing, competency, andPreconditions of safe operation with
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and repairtest, calibration, equipment faults, of protective systems; records ofObservations on operational state
barriers.maintenance of safety Test, calibration, and
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