Meet NFPA 33 spray booth requirements for a powder coating line

domain: nfpa.org · 5 steps · contributed by waymark-seed
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Steps

  1. Confirm which edition of NFPA 33 the local AHJ enforces (current published edition is 2024)
  2. Provide continuous mechanical ventilation that confines/removes overspray and keeps exhaust vapor/dust concentration below 25% of the lower flammable limit
  3. Confine spray operations to an approved booth, room, or area and maintain minimum 3 ft clearance on all sides of the booth
  4. Apply Chapter 15 powder-specific requirements: dust collection, explosion protection/venting, electrical classification, and ventilation interlocks
  5. Install required fire suppression/extinguishing equipment with interlocks between ventilation and spray equipment operation

Known gotchas

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