NFPA 33:2021

Chapter 1 Administration 1.1 Scope. 1.2 Purpose. 1.3 Application. 1.4 Retroactivity. 1.5 Equivalency. 1.6 Units and Formulas. 1.7 Enforcement. (Reserved) Chapter 2 Referenced Publications 2.1 General. 2.2 NFPA Publications. 2.3 Other Publications. 2.4 References for Extracts in Mandatory Sections. Chapter 3 Definitions 3.1 General. 3.2 NFPA Official Definitions. 3.3 General Definitions. Chapter 4 General Requirements 4.1 Location of Spray Application Operations. 4.2 Separation. 4.3 Basements. 4.4 Fueled Vehicles. 4.5 Noncombustible Material. 4.6 Limited-Combustible Material. 4.7 Classification Scheme. 4.8 Determination of Flash Point (FP). Chapter 5 Construction and Design of Spray Areas, Spray Rooms, and Spray Booths 5.1 Spray Areas. 5.2 Spray Rooms.5.3 Spray Booths. 5.4 Conveyor Openings. 5.5 Separation from Other Operations. 5.6 Illumination and Observation Panels. 5.7 Ventilation. Chapter 6 Electrical and Other Sources of Ignition 6.1 Scope. 6.2 General. 6.3 Electrical Area Classification. 6.4 Electrical Devices in Spray Areas. 6.5 Electrical Devices in Areas Adjacent to or Connected to Spray Areas. 6.6 Illumination. 6.7 Static Electricity. 6.8 Flexible Power Cords. 6.9 Portable Electric Luminaires. 6.10 Movement of Powered Vehicles. Chapter 7 Ventilation 7.1 General. 7.2 Performance Requirements. 7.3 Make-Up Air. 7.4 Routing of Exhaust Ducts. 7.5 Recirculation of Exhaust. 7.6 Heating of Recirculated Air. 7.7 Manifolding of Exhaust Ducts. 7.8 Materials of Construction. 7.9 Support of Exhaust Ducts. 7.10 Exhaust Duct Access Openings. 7.11 Exhaust Fans and Drives. 7.12 Drying Areas.Chapter 8 Storage, Handling, and Distribution of Flammable and Combustible Liquids 8.1 General. 8.2 Storage in Process Areas. 8.3 Handling and Use. 8.4 Distribution Systems — Piping. 8.5 Distribution Systems — General. Chapter 9 Protection 9.1 General. 9.2 Ventilation Systems. 9.3 Coating Material Delivery Systems. 9.4 Conveyors. 9.5 Protection Systems. 9.6 Specific Process Protection. 9.7 Protection for Electrostatic Precipitator Scrubber. 9.8 Protection for High-Capacity Dry Paint Arrestor. Chapter 10 Operations and Maintenance 10.1 General. 10.2 Inspection, Testing, and Maintenance. 10.3 Combustible Deposits. 10.4 High-Pressure Hose Lines. 10.5 Maintenance Procedures. 10.6 Waste Containers. 10.7 Clothing. 10.8 Cleaning Operations. 10.9 Solvent Distillation Units (Solvent Recyclers). 10.10 Spontaneous Ignition Hazards. 10.11 Chlorinated Solvents. 10.12 Smoking. 10.13 Hot Work.13.1 General. 13.2 Spray Booths and Spray Rooms Used for Ambient Air Drying. 13.3 Spray Booths and Spray Rooms Used for Drying at Elevated Temperatures. 13.4 Liquefied-Petroleum-Gas, Compressed-Natural-Gas, or Hydrogen-Fueled Vehicles. 13.5 Radiant Drying Apparatus. 13.6 Flash-Off Areas. 13.7 Spray Booths or Spray Rooms Adjacent to or Connected to Rooms or Equipment Used for Drying, Curing, or Fusing. 13.8 Ventilation. 13.9 Warning Signs. Chapter 14 Miscellaneous Spray Operations 14.1 Vehicle Undercoating and Body Lining. 14.2 Preparation Workstations. 14.3 Limited Finishing Workstations. Chapter 15 Powder Coating 15.1 Scope. 15.2 General. 15.3 Applicability. 15.4 Location. 15.5 Protection. 15.6 Enclosures. 15.7 Electrical and Other Sources of Ignition. 15.8 Ventilation, Dust Collection, and Explosion Protection. 15.9 Drying, Curing, and Fusing Equipment. 15.10 Operation and Maintenance. 15.11 Automated Electrostatic Powder Spraying Equipment. 15.12 Handheld Electrostatic Powder Spraying Equipment. 15.13 Electrostatic Fluid Beds. 15.14 Hot Flocking. 15.15 Fluid Bed Coating.15.15 Fluid Bed Coating. 15.16 Powder Coating Delivery and Circulation. 15.17 Powder Unloading, Bag Dumping Stations, and Pneumatic Conveying Systems. 15.18 Screening or Sieving Operations. 15.19 Storage and Handling. Chapter 16 Organic Peroxides and Plural Component Coatings 16.1 Scope. 16.2 General. 16.3 Prevention of Contamination. 16.4 Storage of Organic Peroxides. 16.5 Handling of Organic Peroxides. 16.6 Mixing of Organic Peroxides with Promoters. 16.7 Smoking. 16.8 Trained Personnel. 16.9 Material Safety Data Sheets. Chapter 17 Styrene Cross-Linked Composites Manufacturing (Glass Fiber–Reinforced Plastics) 17.1 Scope. 17.2 Resin Application Equipment. 17.3 Fire Protection. 17.4 Resin Storage. 17.5 Electrical and Other Hazards. 17.6 Ventilation. 17.7 Use and Handling. Chapter 18 Spray Application Operations in Membrane Enclosures 18.1 Scope. 18.2 Limitations. 18.3 Membrane Material. 18.4 Protection. 18.5 Personnel Inside the Enclosure.18.6 Electrical and Other Sources of Ignition. 18.7 Ventilation. 18.8 Recordkeeping. 18.9 Storage and Handling of Ignitible (Flammable and Combustible) Liquids. 18.10 Facilities Compliance Permitting. Chapter 19 Training 19.1 General. Annex A Explanatory Material Annex B Determining Lower Flammable Limits Annex C Determining Ventilation Airflow for Powder Application Systems Annex D Fire Record Annex E Informational References

This standard shall apply to the spray application of flammable or combustible materials, as herein deƒned, either continuously or intermittently by any of the following methods: (1) Compressed air atomization (2) Airless or hydraulic atomization (3) Electrostatic application methods (4) Other means of atomized application 1.1.2 This standard shall also apply to the application of flam‐ mable or combustible materials, as herein deƒned, either continuously or intermittently by any of the following methods:(1) Fluidized bed application methods (2) Electrostatic fluidized bed application methods (3) Other means of fluidized application This standard shall also apply to the spray application of water-borne, water-based, and water-reducible materials that installation prior to the effective date of the standard.