Identify the separate exposure paths

Consider the direction and duration of the event, intervening shielding and which equipment faced the fire. Smoke deposition and heat can have different spatial patterns. NEMA describes evaluation of equipment exposed through proximity to a fire and fire residue. That scope supports a qualified assessment; it does not provide a universal distance or temperature criterion for the turbine, seals, coatings or ground electrical equipment.

Look for material-specific questions

Distorted covers, changed finishes and altered elastomers can justify further examination, but their absence does not reconstruct a safe thermal history. A measured cool surface after the fire is only a current condition. Composite, metal and electrical assemblies need their own relevant evidence. Do not infer that one undamaged-looking metal part proves the condition of adjacent polymers, lubricant or hidden electrical insulation.

Equipment shielded from flame may still have received different radiant exposure from the side facing the fire. Compare orientation and shielding for each component instead of using one site-wide distance as a substitute for the actual thermal and residue assessment boundary.

Define recovery before cleaning or operation

Ask which affected items need physical inspection, manufacturer review or replacement assessment and whether residue evidence must be preserved first. Cleaning may improve visibility but cannot undo a thermal excursion. Do not energize equipment as a damage test or apply an improvised coating over changed surfaces. No MARSTON fire resistance, exposure distance or post-fire restart limit is established here; the actual construction and assessment requirements must govern.