Flame proof area

How we can identify the flame proof area in osd facility I.e granulation coating

areas where organic solvents are used should be flame proof.
Organic solvents are used in granulation areas and in coating areas.

For flame proofing Modification in HVAC are required.
Fire dampers are passive fire protection products used in heating, ventilation, and air conditioning (HVAC) ducts to prevent the spread of fire inside the ductwork through fire-resistance rated walls and floors.

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