Understanding Major Accident Hazards

Consequence Analysis – How bad will it be ?

Once a scenario has been defined, consequence analysis may be undertaken to understand the impact the hazard has upon the target / receptor. This consists of:

  • Defining ‘inventories’ of hazardous materials. The ‘inventory’ may be a material with a hazardous property such as flammability or toxicity, or it may have stored energy such as a pressurised gas.
  • Defining the release conditions. The release conditions may be normal operating conditions, or abnormal conditions. The release path will depend on the failure mechanism, and may be low velocity, high velocity or explosive.
  • Evaluating the effects to personnel and the environment of all end consequences. These may be immediate, delayed or knock-on from the initial event.

 

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