Fire and Explosion Risk Assessment (FERA)

Fire and Explosion Risk Assessment (FERA) is a structured and systematic process to identify and assess risks from fire and explosion hazards. The results of this assessment are used to ensure safe facility layouts, specify passive and active fire protection requirements, and to provide input for Escape and Evacuation Risk Assessment (EERA, Emergency Systems Survival Assessment (ESSA), Building Risk Assessment (BRA) and Quantitative Risk Assessment (QRA) studies.

Fire and Explosion Risk Assessment (FERA) comprises quantification of the probability of fire and explosion accidental events, and their consequences. FERA shall quantify risks to the asset associated with events caused by Loss of Containments (LOCs).

Fire and Explosion Risk Assessment (FERA)

Main objectives of FERA

To analyze and quantitatively assess all credible fire and explosion events connected to flammable inventories that can have an impact on the facilities.
To offer input to decisions connected to the design of systems and equipment, the layout of main areas and equipment, and the requirement to barriers.
To offer appropriate recommendations on the design and operation of the facilities that can achieve a reduction in fire risks.

A Fire and Explosion Risk Assessment includes the below steps:

Identifying all potential LOC that could result in potential fire and explosion hazards on the facilities.
Determining the physical properties of flammable inventory, such as volume, mass flow rates, pressure, temperature, etc.
Identifying the potential release types and the following fire/explosion scenarios like pool fire, jet fire, flash fire, explosion, etc.
Developing the fire/explosion characteristics for each of the identified fire/explosion scenarios (e.g. flame sizes, radiation distances, explosion overpressure distances, etc.).
Determining the leak frequencies linked to each fire/explosion scenario.
Deciding the possible escalation scenarios and consequences of each event, with consideration of the control and mitigation measures proposed.
Proposing additional measures for control and mitigation of the fire/explosion hazards for review as part of ALARP demonstration process.

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