NFPA 33-2021 PDF Download

The NFPA 33-2021 standard aims to protect individuals in facilities where flammable or combustible liquids are sprayed. The standard addresses fire, explosion, and electrical hazards in industries that spray flammable and combustible liquids, including waterborne materials with flammable residues.

Notable updates in this edition include expanded requirements for sprinkler systems and spray booths, clarifications on the use of clear, cellulose-based bags to cover sprinklers, and specifications on the recirculation of heated air in curing spray booths. Additionally, the standard clarifies that automatic fire protection is not necessary in small spray booths. The updated version of NFPA 33 provides improved consistency and clarity, making it essential for engineers, designers, contractors, and installers.

The standard covers essential rules for the construction of spray rooms, spray booths, and spray areas, including electrical installations, ventilation, and fire protection systems. It also includes requirements for the safe spray application of coatings, addressing the handling of flammable liquids, operations, and maintenance.