Unfortunately, this can be time consuming and expensive, and is only as good as the model definition. Moreover, the requirement to tie the fire modelling results into the safety justification for the reactor plant may be overshadowed
by the effort associated with CFD.
The starting point for assessment is a physical or tabletop walkdown of compartments by suitably qualified and
experienced operators, designers and fire experts. The initial purpose of this walkdown is:
• The creation of an equipment inventory
• The demarcation of each room or compartment into smaller zones (where necessary) to facilitate analysis of fire growth.