危害与风险分析-HazardRiskAnalysis.ppt

Part 03 Hazard and Risk AnalysisHeidi FuglumCertified Functional safety engineer1 day intro training in Functional safety Hazard and Risk Analysis In this moduleHow much safety is enough?Risk managementHazard identificationHazard AnalysisRisk ReductionTechniquesRisk graph, risk matrixIdentification safety function Safety Lifecycle, where are we 11External RiskReductionFacilitiesRealization1Concept2Overall Scope Definition3Hazard Risk Analysis4Overall Safety Requirements5Safety Requirements Allocation15Overall Modification Retrofit16Decommissioning12Overall Installation Commissioning13Overall Safety Validation14Overall Operation Maintenance9Safety-relatedsystems: E/E/PESRealization10Safety-relatedsystems: Other TechnologyRealizationOverall Installation Commissioning Planning678Overall Operation Maintenance PlanningOverall Validation PlanningOverall PlanningBack to appropriate Overall Safety Lifecycle phaseSIL DeterminationHazard IdentificationSIL ImplementationOverall Operation Maintenance PlanningOverall Operation Maintenance Overall Modification Retrofit Hazard / Risk AnalysisObjectiveIdentify process hazards, estimate their risks and decide if the risk is tolerableTaskHazard identificationAnalysis of Likelihood and ConsequenceConsideration of non-SIL Layers of protection IEC 61508 – 4A potential source of harmNOTE – The term includes danger to persons arising within a short time scale (for example, fire and explosion) and also those that have a long-term effect on a person’s health (for example, release of a toxic substance).AIChEAn inherent chemical or physical characteristic that has the potential for causing damage to people, environment or property.KietzA substance, object or situation that can give rise to injury or damageDefinition of Hazard What is a Hazardous EventA hazardous Event occurs when the potential hazard has happend What is Risk ?RiskCalculated Process RiskTolerable Level of Risk(Defined by user per application)Process DesignOther