Risk assessment fire consequence evaluation

Figure 5-1 shows how the FHA is integrated into an overall risk assessment. A process hazard analysis is required to identify likely fire scenarios that are carried forward to the FHA. An FHA provides the tools to characterize the hazards and evaluate consequences. The results are incorporated into an overall risk assessment. See Chapter 6 for more information on fire risk assessment. 

Formal Safety Assessments (FSAs) are built aroimd the concept of acceptable risk. For example, the decision as to whether a firewall should be installed between two sections of the platform will depend on the associated risk, that is, the nature of the hazard (spreading fire, consequence of the fire, and likelihood of its occurrence). The risk evaluation will then be repeated assuming the presence of a safeguard (in this case the firewall). 

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