A Risk Based Approach to Calculating Fire Water Demand

It is mandatory to have fire water in an operational refinery or plant according to NFPA regulatory codes. Any plant emergency may not be adequately reacted to and overcome if there is no fire protection and fire water system. Facilities can prepare the appropriate amount of fire water by deciding on the worst-case scenario in case of a plant emergency. This presentation shows how to calculate in Process Safety Office® SuperChems™ what the maximum required fire water demand rate is for a liquefied petroleum gas (LPG) storage facility using a risk-based approach. The intent is on reducing the risk level, i.e. measures intended to prevent and/or mitigate the identified hazardous scenarios, of a facility. Using this method, the optimal amount of fire water can be obtained, and a more focused emergency response plan can be developed. Technical references from NFPA and API and the Quantitative Risk Assessment (QRA) methods are included.

 

Required-SuperChems™-inputs-for-the-source-term-stream

 

Required SuperChems™ inputs for the source term stream.


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