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Risk analysis
Risk analysis
Risk analysis
Risk analysis
Risk analysis
Risk analysis
Risk analysis
Risk analysis
Risk analysis
Risk analysis
Risk analysis
Risk analysis
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Risk analysis

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Risk analysis

Risk analysis

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  • 1. Risk Analysis
  • 2. What may happen?
  • 3. What Risk Analysis Can Do?
    Helps in
    Forecasting any unwanted situation
    Estimating damage potential of such situation
    Decision making to control such situation
    Evaluating effectiveness of control measures
  • 4. Procedure for Risk Analysis
  • 5. Procedure for Risk Analysis
    Now the Risk Ranking of particular activity / aspect can be evaluated with the help of 'Risk Ranking Chart', as illustrated below:
    Risk Ranking = (Severity of Consequence) × (Likelihood or Occurrence)
  • 6. Risk
    The probability of suffering a harm or loss. It is a combination of hazard and Probability
    Risk = Probability of occurrence of hazard X magnitude of hazard
  • 7. Types and Measurement of Risks
    Type of Risks
    • Background risk
    • 8. Incremental risk
    • 9. Total risk
    Measurement of Risk
    • Individual Risk
    • 10. Societal Risk
  • Individual Risk
    Risk posed by an individual
    It is generally measured in time domain for a particular type of hazard.
    Risk of Death due to fire in an industry = 1.0E-05 /yr
  • 11. Societal Risk
    Risk for a group of people
    It is measured in terms of number of people poses particular risk for a given period of time.
    Risk of Death to 10 workers due to fire in an industry = 1.0E-09 /yr/10 persons
  • 12. Acceptable Risk
    Risk that’s acceptable to regulatory agency and also to the public
    Level of Risk of Death Per Year
    (voluntarily acceptable by public)
    Smoking 30 cigarettes per day 1 in 200
    Man aged 35-44 1 in 600
    Motor Vehicle Accident 1 in 10 000
    Accident at home 1 in 12 000
    Rail accident 1 in 420 000
  • 13. Acceptable Risk Criteria
    UK Health and Safety Executive Criteria: FAR (Fatality Accident Rate)
    Number of fatality in life time working in an industry
    FAR = (Number of fatalities)*108/(Total hours worked by all employees during period covered)
    Acceptable FAR value 1.0
  • 14. Acceptable Risk Criteria
    US EPA
    For carcinogens/or other eventsa lifetime risk of 1 in million (1.0E-06) is defined as acceptable
    For non-carcinogens a hazard index less than 1.0 is defined acceptable

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