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NFPA 34, Standard for Dipping, Coating, and Printing Processes Using Flammable or Combustible Liquids

2021 NFPA 34 Standard - Current Edition
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  • Description

    Help ensure improved fire safety and compliance with the 2021 edition of NFPA 34, Standard for Dipping, Coating, and Printing Processes Using Flammable or Combustible Liquids.

    Essential for fire safety in industrial buildings, NFPA 34 addresses dipping, roll coating, flow coating, printing, and similar procedures using flammable or combustible liquids.

    NFPA 34 provides requirements for the following:

    • Proper location, design, and construction of dipping and coating equipment
    • Installation of electrical equipment and control of ignition sources
    • Handling of flammable liquids
    • Operations and maintenance
    • Ventilation

    The latest updates for the 2021 edition NFPA 34 include the following:

    • "Class I" was removed from references to "Class I, Zone 0," "Class I, Zone 1," and "Class I, Zone 2" to match the latest requirements in NFPA 70®, National Electrical Code®.
    • The term ignitible was added to references of "flammable or combustible liquids" to align with the most current changes to NFPA 30, Flammable and Combustible Liquids Code.
    • Revisions to Chapter 8, Storage, Handling, and Distribution of Flammable and Combustible Liquids, were expanded to include flash point and ignitible liquid requirements from NFPA 30. These new terms were also added to the list of defined terms in Chapter 3 to provide clarity for the user.
    • The general requirements in Chapter 4 were expanded to allow the user additional options in meeting the requirements for limited-combustible materials.

    Help to prevent fire and explosion hazards in industrial facilities with the 2021 edition of NFPA 34, Standard for Dipping, Coating, and Printing Processes Using Flammable or Combustible Liquids. (Print, 38 pp., 2021)

  • Table of Contents (2021 Current Edition)

    NFPA® 34 Standard for Dipping, Coating, and Printing Processes Using Flammable or Combustible Liquids, 2021 Edition

    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 Dipping, Coating, and Printing Processes.
    4.2 Separation.
    4.3 Basements.
    4.4 Access to Means of Egress.
    4.5 Noncombustible Material.
    4.6 Limited-Combustible Material.
    4.7 Classification Scheme.
    4.8 Determination of Flash Point (FP).
    Chapter 5 Design and Construction of Dipping, Coating, and Printing Equipment and Systems
    5.1 Scope.
    5.2 General Requirements.
    5.3 Height Above Floor.
    5.4 Overflow Prevention.
    5.5 Liquid Level.
    5.6 Overflow Pipes.
    5.7 Bottom Drains.
    5.8 Salvage Tanks.
    5.9 Conveyor Systems.
    5.10 Control of Liquid Temperature.
    Chapter 6 Electrical and Other Sources of Ignition
    6.1 Scope.
    6.2 General.
    6.3 Electrical Area Classification — Class I Locations.
    6.4 Areas Adjacent to Open Processes.
    6.5 Areas Adjacent to Enclosed Dipping and Coating Processes.
    6.6 Equipment and Containers in Ventilated Areas.
    6.7 Luminaires.
    6.8 Static Electric Discharges.
    Chapter 7 Ventilation
    7.1 Scope.
    7.2 General.
    7.3 Performance Requirements.
    7.4 Make-Up Air.
    7.5 Routing of Exhaust Ducts.
    7.6 Recirculation of Exhaust.
    7.7 Materials of Construction.
    7.8 Support of Exhaust Ducts.
    7.9 Exhaust Duct Cross-Section.
    7.10 Exhaust Duct Access.
    7.11 Exhaust Fans and Drives.
    7.12 Drying Areas.
    Chapter 8 Storage, Handling, and Distribution of Ignitible (Flammable and Combustible) Liquids
    8.1 Scope.
    8.2 General.
    8.3 Storage in Process Areas.
    8.4 Transporting Liquids.
    8.5 Handling Liquids at Point of Final Use.
    8.6 Liquid Piping Systems.
    Chapter 9 Protection
    9.1 Scope.
    9.2 Automatic Fire Protection Systems.
    9.3 Ventilation Systems.
    9.4 Notification and Interlocks.
    9.5 Automatic Fire Protection for Small Dipping Processes.
    9.6 Automatic Fire Protection for Enclosed Processes and Large Processes.
    9.7 Requirements for All Fire Protection Systems.
    9.8 Specific Requirements for Automatic Carbon Dioxide, Dry Chemical, Clean Agent, and Water Mist Systems.
    9.9 Specific Requirements for Water-Based Fire Protection Systems.
    9.10 Automatic Fire Protection for Printing Processes.
    9.11 Portable Fire Extinguishers.
    Chapter 10 Operations and Maintenance
    10.1 Scope.
    10.2 General.
    10.3 Waste Containers.
    10.4 Inspection and Testing.
    10.5 Cleaning Operations.
    10.6 Combustible Dusts and Residues.
    10.7 Smoking.
    10.8 Hot Work.
    10.9 Solvent Distillation Units (Solvent Recyclers).
    10.10 Solvent Recovery Systems.
    Chapter 11 Electrostatic Detearing Apparatus
    11.1 Scope.
    11.2 General.
    11.3 Requirements for Electrical System and Components.
    11.4 Support of Workpieces.
    11.5 Manual Operations.
    11.6 Electrical Safety Requirements.
    11.7 Personnel Safety.
    11.8 Grounding Requirements.
    11.9 Signs.
    11.10 Drip Plates and Screens.
    Chapter 12 Training
    12.1 General.
    Annex A Explanatory Material
    Annex B Fire Record
    Annex C Illustrations of Suggested Methods of Protection
    Annex D Informational References
  • Prior Editions

    2018 Edition

    Safeguard workers and property from fire and explosion hazards with the 2018 edition NFPA 34. Up-to-date rules address dipping coating and printing operations.

    Vital to fire safety in many industrial facilities, NFPA 34, Standard for Dipping, Coating, and Printing Processes Using Flammable or Combustible Liquids addresses dipping, roll coating, flow coating, printing, and similar processes using flammable or combustible liquids.

    Parallel to the requirements in NFPA 33 for spray application, NFPA 34 provides requirements for:

    • Proper location, design, and construction of dipping and coating equipment
    • Installation of electrical equipment and control of ignition sources
    • Ventilation
    • Handling of flammable liquids
    • Fire protection
    • Operations and maintenance

    Here's how major changes in the 2018 edition help you achieve better fire safety and compliance:

    • Clarifications in Chapter 1, Administration support proper application. For example, this edition specifies that Chapter 14 shall apply only to miscellaneous spray operations, and Chapter 18 shall apply only to spray application processes or operations that are conducted in temporary membrane enclosures both inside and outside buildings and structures.
    • Modified Chapter 3, Definitions includes changes made to the definitions for liquids and materials that are consistent with other NFPA® codes -- placing noncombustible material, limited combustible material, and classification of liquids and determination of flash points in a General Requirements section. Changes to definitions are consistent with NFPA 1, Fire Code, NFPA 30, Flammable and Combustible Liquids Code, and NFPA 5000®, Building Construction and Safety Code®.
    • Revisions in Chapter 4, General Requirements clarify definitions and location of dipping, coating, and printing processes. Additional supporting material in Annex A is also provided.
    • Revisions in Chapter 5, Design and Construction of Dipping, Coating, and Printing Equipment and Systems remove the exception and clarify construction for secondary enclosures.
    • Revised Chapter 6, Electrical and Other Sources of Ignition include updated figures in Chapter 6 and Annex A that improve consistency and to clarify electrical classification requirements.

    Prevent fire and explosion hazards in industrial facilities with the 2018 edition of NFPA 34. (Print, 44 pp., 2018)

    2015 Edition

    Reduce fire and explosion hazards during dipping coating and printing operations to safeguard workers and property with the 2015 NFPA 34.

    Vital to fire safety in many industrial facilities, NFPA 34, Standard for Dipping, Coating, and Printing Processes Using Flammable or Combustible Liquids addresses dipping, roll coating, flow coating, printing, and similar processes using flammable or combustible liquids.

    Parallel to the requirements in NFPA 33 for spray application, this document provides requirements for:

    • Proper location, design, and construction of dipping and coating equipment
    • Installation of electrical equipment and control of ignition sources
    • Ventilation
    • Handling of flammable liquids
    • Fire protection
    • Operations and maintenance

    Major changes in the 2015 edition help you achieve better fire safety and compliance:

    • Water mist fire protection systems are now an approved method of fire protection, adding greater flexibility for designers and engineers.
    • Modified terminology correlates with NFPA 70®, National Electrical Code® (NEC®), and revised graphics help you understand electrical classification requirements.
    • Clarified exhaust discharge requirements are consistent with NFPA 33, Standard for Spray Application Using Flammable or Combustible Materials.
    • Clarified requirements concerning recirculation and added a new definition of recirculation filter.
    • Modified flammable storage requirements to be consistent with the 2015 NFPA 30, Flammable and Combustible Liquids Code and NFPA 33.

    Prevent fire and explosion hazards in industrial facilities with the 2015 NFPA 34. (Softbound, 31 pp., 2015)

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