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- Process safety of a chemical plant encompasses several layers of protection. Control measures, shut-down systems, release absorption, accumulation of releases by dikes and protection by barriers. These layers of protection are intended to prevent an event from propagating into severe consequences because of deviations from normal operation conditions. Emergency response is the last layer of protection that is intended to control an event if possible or to reduce consequences in cases of loss of control. However, a reliable response to an emergency event requires planning.
- The three components of emergency planning are : preparedness, response and recovery. Also, there are two main types of emergencies with which the chemical industry is concerned. These are the works emergency and the transport emergency. They are some what different and require separate treatment. Whatever the type of emergency plan, the overall message is that it should be kept simple and flexible, but capable of being scaled up or down as circumstances demand.
- Reference: Occupational Safety and Health Standard. Process Safety Management of Highly Hazardous Chemicals. Alaska Department of Labor and Workforce Development
- A response plan which allows for all predicted ‘out of control’ events to be described and response laid down to eliminate or mitigate the consequences. Its attributes should allow local and external responders to act effectively if such events occur.