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Classification of Risk Assessment

Classification of Risk Assessment

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Classification of risk assessment Classification of risk assessment Presentation Transcript

  • Classification of Risk Assessment
  • Risk Assessment
    Assessment is a systematic procedure for describing and quantifying the risk associated with hazardous substance, process, action or event.
    It involves:
    Identification of hazard
    Quantification of hazard
    Quantification of probability of occurrence of hazard
    Estimation of risk
  • Classification of Risk Assessment
    According to scope of work, risk assessment may be classified as:
    • Environmental Risk Assessment
    • Industrial Risk Assessment
    • Reliability Risk Assessment
    • Financial Risk Assessment
    • Health Risk Assessment
  • Environmental Risk Assessment
    Risk
    Source
    Exposure Process
    Consequ--ence process
    • Release Assessment (Hazard Identification)
    • Exposure Assessment
    • Consequence Assessment (Toxicity Assessment)
    • Risk Estimation (Risk Characterization)
  • Environmental Risk Assessment
    Hazard identification
    • Identification of all possible sources of hazards such chemicals, events, etc.
    • Estimate their strength at various mediums
    • Rank them according to their severity
    • Set up priority for the most vulnerable ones
    Parameters used for screening and ranking
    • Concentration
    • Frequency of detection
    • Mobility
    • Persistence in the environment
    • Treat ability
  • Environmental Risk Assessment
    • Exposure Assessment
    • Activities involve in exposure assessment (Benzene)
    Release mechanism (volatilization)
    Transport mechanism (air convection)
    Transfer mechanism (volatilization)
    Transformation mechanism (chemical reaction)
    Exposure point (air)
    Receptors (population)
    Exposure Rout (inhalation)
  • Environmental Risk Assessment
    Response
    Dose
    • Consequence assessment/Toxicity assessment
    • Adverse effect on environment, human or other living system
  • Industrial Risk Assessment
    Steps involve:
    • Hazard Identification
    • Hazard Assessment
    • Consequence Analysis
    • Risk Characterization
  • Industrial Risk Assessment
    Hazard Identification
    • DOW Indiex
    • Mond Index
    • SWeHI index
    • AHI index
    Hazard Assessment
    Qualitative hazard assessment
    • HAZOP technique
    • OptHAZOP technique
    Probabilistic hazard assessment
    • Fault tree analysis
  • Industrial Risk Assessment
    • HAZOP
    HAZOP is a simple structured methodology for hazard identification and assessment, PI&D's, PFD, material flow diagrams, and operating manuals are examined to identify causes and consequences for all possible deviations from normal operation that could arise
  • Industrial Risk Assessment
    • Consequence analysis
    • Fire modeling
    • Explosion modeling
    • Impact modeling
    • Toxic release and dispersion modeling
  • Reliability Risk Assessment
    Risk Based Maintenance Planning
    Risk estimation
    • Hazard identification
    • Quantitative Hazard Assessment
    • Probabilistic Hazard Assessment
    • Risk Quantification
    Risk evaluation
    • Setting up risk acceptance criteria
    • Risk comparison
    Maintenance planning