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Classification of risk assessment


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Classification of Risk Assessment

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Classification of risk assessment

  1. 1. Classification of Risk Assessment<br />
  2. 2. Risk Assessment<br />Assessment is a systematic procedure for describing and quantifying the risk associated with hazardous substance, process, action or event. <br />It involves:<br />Identification of hazard<br />Quantification of hazard<br />Quantification of probability of occurrence of hazard<br />Estimation of risk<br />
  3. 3. Classification of Risk Assessment<br />According to scope of work, risk assessment may be classified as:<br /><ul><li> Environmental Risk Assessment
  4. 4. Industrial Risk Assessment
  5. 5. Reliability Risk Assessment
  6. 6. Financial Risk Assessment
  7. 7. Health Risk Assessment</li></li></ul><li>Environmental Risk Assessment<br />Risk<br />Source<br />Exposure Process<br />Consequ--ence process<br /><ul><li>Release Assessment (Hazard Identification)
  8. 8. Exposure Assessment
  9. 9. Consequence Assessment (Toxicity Assessment)
  10. 10. Risk Estimation (Risk Characterization)</li></li></ul><li>Environmental Risk Assessment<br />Hazard identification<br /><ul><li>Identification of all possible sources of hazards such chemicals, events, etc.
  11. 11. Estimate their strength at various mediums
  12. 12. Rank them according to their severity
  13. 13. Set up priority for the most vulnerable ones</li></ul>Parameters used for screening and ranking<br /><ul><li>Concentration
  14. 14. Frequency of detection
  15. 15. Mobility
  16. 16. Persistence in the environment
  17. 17. Treat ability </li></li></ul><li>Environmental Risk Assessment<br /><ul><li> Exposure Assessment
  18. 18. Activities involve in exposure assessment (Benzene)</li></ul>Release mechanism (volatilization)<br />Transport mechanism (air convection)<br />Transfer mechanism (volatilization)<br />Transformation mechanism (chemical reaction)<br />Exposure point (air)<br />Receptors (population)<br />Exposure Rout (inhalation)<br />
  19. 19. Environmental Risk Assessment<br />Response<br />Dose<br /><ul><li>Consequence assessment/Toxicity assessment
  20. 20. Adverse effect on environment, human or other living system</li></li></ul><li>Industrial Risk Assessment<br />Steps involve:<br /><ul><li>Hazard Identification
  21. 21. Hazard Assessment
  22. 22. Consequence Analysis
  23. 23. Risk Characterization</li></li></ul><li>Industrial Risk Assessment<br /> Hazard Identification<br /><ul><li>DOW Indiex
  24. 24. Mond Index
  25. 25. SWeHI index
  26. 26. AHI index</li></ul> Hazard Assessment<br />Qualitative hazard assessment<br /><ul><li> HAZOP technique
  27. 27. OptHAZOP technique</li></ul>Probabilistic hazard assessment<br /><ul><li> Fault tree analysis</li></li></ul><li>Industrial Risk Assessment<br /><ul><li> HAZOP</li></ul>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 <br />
  28. 28. Industrial Risk Assessment<br /><ul><li>Consequence analysis
  29. 29. Fire modeling
  30. 30. Explosion modeling
  31. 31. Impact modeling
  32. 32. Toxic release and dispersion modeling</li></li></ul><li>Reliability Risk Assessment<br />Risk Based Maintenance Planning<br /> Risk estimation<br /><ul><li>Hazard identification
  33. 33. Quantitative Hazard Assessment
  34. 34. Probabilistic Hazard Assessment
  35. 35. Risk Quantification</li></ul> Risk evaluation<br /><ul><li>Setting up risk acceptance criteria
  36. 36. Risk comparison</li></ul> Maintenance planning<br />