Hazard analysis - Identification & Assessment of potential hazards causing External problems

Discussion

• Nirja Shah   -Posted on 23 Oct 15
  - A hazard analysis is used as the first step in a process used to assess risk.
  
  - The identification of different type of hazards is the result of hazard analysis.
  
  - A potential condition and exists or not (probability is 1 or 0) is a hazard.
  
  - It may in single existence or in combination with other hazards (sometimes called events) and conditions become an actual Functional Failure or Accident (Mishap).
  
  - Scenario is the way which exactly happens in one particular sequence.
  
  - The scenario has a probability (between 1 and 0) of occurrence. A system has many potential failure scenarios.
  
  - A classification is assigned based on the worst case severity of the end condition.
  
  - Combination of probability and severity is risk. Preliminary risk levels can be provided in the hazard analysis.
  
  - The validation, more precise prediction (verification) and acceptance of risk is determined in the Risk assessment (analysis).
  
  - The main goal of both is to provide the best selection of means of controlling or eliminating the risk.
  
  - This term is used in several engineering specialities, including avionics, chemical process safety, safety engineering, reliability engineering and food safety.

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