2024 NFPA 33 Standard Spray Application Using Flammable or Combustible Materials

NFPA 33, Standard for Spray Application Using Flammable or Combustible Materials 2024 edition establishes the mandatory requirements for fire and electrical safety in facilities where flammable or combustible materials are applied by spraying. This reference covers the spray application of coatings, handling of flammable liquids, and the construction and operation of spray rooms, spray booths, and spray areas, including requirements for ventilation, electrical installations, and fire protection systems.

Who Uses NFPA 33

The 2024 edition is the standard of reference for fire protection engineers, mechanical engineers, electrical engineers, facility safety managers, contractors, and authority having jurisdiction (AHJ) officials responsible for the design, installation, and inspection of spray finishing operations in manufacturing, industrial, and commercial facilities.

What's New in the 2024 Edition

The 2024 edition introduces terminology updates and targeted technical revisions, including:

• Updated terminology throughout to better align with NFPA 30, Flammable and Combustible Liquids Code.
• New definitions for maximum allowable quantity and inflatable finishing workstations.
• New requirements addressing spray finishing operations.
• Revisions to Chapters 4 and 5 to align with International Fire Code requirements.
• New test requirements for materials used in wall and ceiling assemblies within spray areas.
• Simplified requirements and new limits for total quantities of liquids permitted in mixing rooms.
• Revised Chapter 9 differentiating liquid spray operations from powder spray operations, with hybrid systems using water and inert gas added to the list of available fire protection system options.

Stay compliant with the spray application safety standard relied on by engineers, contractors, and safety professionals working with flammable and combustible materials.

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