2020 NFPA 58 Code - Current Edition
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  • Description

    Keep pace with the rapidly evolving LP-Gas industry with the newly revised edition of NFPA Liquefied Petroleum Gas Code.

    There are inherent dangers in working with equipment and appliances fueled by liquefied petroleum (LP) gas. Enforced in most states and referenced by DOT, NFPA 58, Liquefied Petroleum Gas Code, offers safety requirements for all LP-Gas (propane) installations to help protect homes, businesses, and industrial settings.

    The 2020 edition is modified and expanded to account for the development of state-of-the-art technology and the evolution of safety protocols and industry best practices.

    Important updates help designers, health and safety managers, AHJs, and insurance professionals prepare for the challenges of modern LP-Gas hazards.

    The LP-Gas Code is your source for the latest requirements for LP-gas installations, including container construction, piping design, and separation of containers from homes, stores, schools, and other buildings. The code also provides comprehensive coverage of handling LP-Gas during transfer and storage, including operator qualifications, maximum filling quantity in containers, and pre-transfer inspections to ensure containers are fit for continued service.

    Significant edits, changes, and additions to the 2020 edition of NFPA 58 include:

    • New requirements for fire-resistance rating and noncombustible materials to specify when materials are required to have a particular fire-resistance rating or when they must be noncombustible
    • Introduction of provisions allowing for the use of schedule 10 steel piping in aboveground vapor service only, and the use of austenitic stainless steel in piping material
    • Clarification to remove conflict between industry standards and the code for choosing fire extinguishers
    • Requirements requiring the inspection of the face seal on CGA 791 and CGA 797 connections prior to filling with instructions to follow in case defects are found
    • Modifications to Chapter 15, Operations and Maintenance, to specifically reference operations and maintenance requirements and to remove unrelated installation provisions
    • Adjusted scope of Chapter 15 to exclude systems regulated by more stringent US Department of Transportation requirements for operations and maintenance

    Get the cutting-edge information you need to help safeguard LP-Gas installations.

    Having access to the most current requirements for safer installations and handling of liquefied petroleum gas is vital to better protecting lives and property. Order the new NFPA 58, Liquefied Petroleum Gas Code, 2020 edition today.

  • Table of Contents (2020 Current Edition)

    NFPA® 58 Liquefied Petroleum Gas Code, 2020 Edition

    Chapter 1 Administration
    1.1 Scope.
    1.2 Purpose. (Reserved)
    1.3 Application.
    1.4 Retroactivity.
    1.5 Equivalency.
    1.6 Units and Formulas.
    1.7 Enforcement.
    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 Acceptance of Equipment and Systems.
    4.2 LP-Gas Odorization.
    4.3 Notification of Installations.
    4.4 Qualification of Personnel.
    4.5 Ammonia Contamination.
    4.6 Minimum Requirements.
    4.7 Portable Fire Extinguisher.
    4.8 Fire Resistance Rating.
    4.9 Noncombustible Material.
    Chapter 5 LP-Gas Equipment and Appliances
    5.1 Scope.
    5.2 Containers.
    5.3 Reserved.
    5.4 Reserved.
    5.5 Reserved.
    5.6 Containers with Attached Supports.
    5.7 Reserved.
    5.8 Reserved.
    5.9 Container Appurtenances.
    5.10 Regulators and Regulator Vents.
    5.11 Piping (Including Hose), Fittings, and Valves.
    5.12 Reserved.
    5.13 Internal Valves. (Reserved)
    5.14 Valves Other Than Container Valves.
    5.15 Hydrostatic Relief Valves.
    5.16 Reserved.
    5.17 Reserved.
    5.18 Reserved.
    5.19 Reserved.
    5.20 Equipment.
    5.21 Reserved.
    5.22 Reserved.
    5.23 Appliances.
    5.24 Vaporizers, Tank Heaters, Vaporizing Burners, and Gas-Air Mixers.
    5.25 Reserved.
    5.26 Reserved.
    5.27 Vehicle Fuel Dispensers.
    Chapter 6 Installation of LP-Gas Systems
    6.1 Scope.
    6.2 Location of Containers.
    6.3 Location of Containers Not Connected for Use.
    6.4 Container Separation Distances.
    6.5 Other Container Location Requirements.
    6.6 Installation of Containers with Attached Supports.
    6.7 Location of Transfer Operations.
    6.8 Installation of Containers.
    6.9 Installation of Container Appurtenances.
    6.10 Regulators.
    6.11 Piping Systems.
    6.12 Remote Shutoff Actuation.
    6.13 Internal Valves.
    6.14 Emergency Shutoff Valves.
    6.15 Hydrostatic Relief Valve Installation.
    6.16 Testing New or Modified Piping Systems.
    6.17 Leak Check for Vapor Systems.
    6.18 Installation in Areas of Heavy Snowfall.
    6.19 Corrosion Protection.
    6.20 Equipment Installation.
    6.21 Bulk Plant and Industrial Plant LP-Gas Systems.
    6.22 LP-Gas Systems in Buildings or on Building Roofs or Exterior Balconies.
    6.23 Installation of Appliances.
    6.24 Vaporizer Installation.
    6.25 Ignition Source Control.
    6.26 LP-Gas Systems on Vehicles (Other Than Engine Fuel Systems).
    6.27 Vehicle Fuel Dispenser and Dispensing Systems.
    6.28 Containers for Stationary Engines.
    6.29 Fire Protection.
    6.30 Alternate Provisions for Installation of ASME Containers.
    Chapter 7 LP-Gas Transfer
    7.1 Scope.
    7.2 Operational Safety.
    7.3 Venting LP-Gas to Atmosphere.
    7.4 Quantity of LP-Gas in Containers.
    Chapter 8 Storage of Cylinders Awaiting Use, Resale, or Exchange
    8.1 Scope.
    8.2 General Provisions.
    8.3 Storage Within Buildings.
    8.4 Storage Outside of Buildings.
    8.5 Fire Protection and Electrical Area Classification.
    8.6 Automated Cylinder Exchange Stations.
    Chapter 9 Vehicular Transportation of LP-Gas
    9.1 Scope.
    9.2 Electrical Requirements.
    9.3 Transportation in Portable Containers.
    9.4 Transportation in Cargo Tank Vehicles.
    9.5 Trailers, Semitrailers, and Movable Fuel Storage Tenders, Including Farm Carts.
    9.6 Transportation of Stationary Containers to and from Point of Installation.
    9.7 Parking and Garaging Vehicles Used to Carry LP-Gas Cargo.
    Chapter 10 Buildings or Structures Housing LP-Gas Distribution Facilities
    10.1 Scope.
    10.2 Separate Structures or Buildings.
    10.3 Attached Structures or Rooms Within Structures.
    Chapter 11 Engine Fuel Systems
    11.1 Scope.
    11.2 Training.
    11.3 Containers.
    11.4 Container Appurtenances.
    11.5 Quantity of LP-Gas in Engine Fuel Containers.
    11.6 Carburetion Equipment.
    11.7 Piping, Hose, and Fittings.
    11.8 Installation of Containers and Container Appurtenances.
    11.9 Installation in Interior of Vehicles.
    11.10 Pipe and Hose Installation.
    11.11 Industrial (and Forklift) Trucks Powered by LP-Gas.
    11.12 General Provisions for Vehicles Having Engines Mounted on Them (Including Floor Maintenance Machines).
    11.13 Engine Installation Other Than on Vehicles.
    11.14 Garaging of Vehicles.
    Chapter 12 Motor Vehicles Intended for Over-the-Road Use or Designed to Transport Passengers and Are Fueled by LP-Gas
    12.1 Scope.
    12.2 Installation of Components and Systems.
    12.3 ASME Containers, Materials, and Equipment.
    12.4 LP-Gas Fuel Systems.
    12.5 Electrical Installation.
    12.6 Installation of Pipe, Tubing, and Hose.
    12.7 Protection of Pipe, Tube, and Hose.
    12.8 Testing of Piping, Tubing, Hose, and Fittings.
    12.9 LP-Gas Liquid and Vapor Injectors.
    12.10 Fuel Rails and Distribution Blocks.
    12.11 Vaporizer/Regulator Systems.
    12.12 Fuel Lockoffs.
    12.13 Servicing, Parking, and Display of Vehicles Indoors.
    12.14 Commissioning Vehicles.
    Chapter 13 Refrigerated Containers
    13.1 Construction and Design of Refrigerated Containers.
    13.2 Marking on Refrigerated LP-Gas Containers.
    13.3 Container Installation.
    13.4 Refrigerated LP-Gas Container Instruments and Controls.
    13.5 Refrigerated LP-Gas Container Impoundment.
    13.6 Inspection and Testing of Refrigerated LP-Gas Containers and Systems.
    13.7 Container Siting.
    13.8 Relief Devices.
    Chapter 14 Marine Shipping and Receiving
    14.1 Scope.
    14.2 Piers.
    14.3 Pipelines.
    14.4 Inspections Prior to Transfer.
    Chapter 15 Operations and Maintenance
    15.1 Scope.
    15.2 Operating Requirements.
    15.3 Operating Requirements for Bulk Plants and Industrial Plants.
    15.4 Operations Requirements for Marine Shipping and Receiving.
    15.5 Maintenance Manuals and Procedures.
    15.6 Maintenance Procedures for Bulk Plants and Industrial Plants.
    Chapter 16 Pipe and Tubing Sizing Tables
    16.1 Sizing Pipe and Tubing.
    Annex A Explanatory Material
    Annex B Properties of LP-Gases
    Annex C Design, Construction, and Requalification of DOT (ICC) Cylinders
    Annex D Design of ASME and API-ASME Containers
    Annex E Pressure Relief Devices
    Annex F Liquid Volume Tables, Computations, and Graphs
    Annex G Wall Thickness of Copper Tubing
    Annex H Procedure for Torch Fire and Hose Stream Testing of Thermal Insulating Systems for LP-Gas Containers
    Annex I Container Spacing
    Annex J Sample Ordinance Adopting NFPA 58
    Annex K Burial and Corrosion Protection for Underground and Mounded ASME Containers
    Annex L Suggested Methods of Checking for Leakage
    Annex M A Suggested Container Purging Procedure
    Annex N Informational References
  • Prior Editions

    2017 Edition

    Featuring an expanded scope, all-new chapter, and major changes, the 2017 edition of NFPA 58 reflects the changing face of LP-Gas technology and the latest safety protocols.

    Enforced in most states and referenced by DOT, NFPA 58, Liquefied Petroleum Gas Code provides minimum safety requirements for all liquefied petroleum gas (propane) installations -- from small cylinders installed at residences to large bulk storage facilities that can exceed 100,000 gallons. It includes minimum requirements for safe handling during LP-Gas transfer, including operator qualifications, maximum filling quantity in containers, and pre-transfer inspections to ensure containers are fit for continued service.

    NFPA 58 also covers a number of safety requirements related to container construction; piping design; separation of containers from homes, stores, schools and other important buildings; and safe handling of liquefied petroleum gas during transfer between containers.

    Updates help designers, safety and risk managers, AHJs, and insurance professionals effectively address today's LP-Gas hazards.

    • An all-new chapter (Chapter 12) updates the technology now available for over-the-road vehicles utilizing LP-Gas. New definitions, construction, transportation, and location requirements have been added for skid tanks and porta-pacs.
    • NFPA 58's scope is expanded to include hot air balloons, with requirements referencing the current state of federal law regarding their use and construction. The newest edition also includes new requirements and guidance on how to conduct liquid transfer into these containers that were previously not covered by the Code.
    • Revised snow load requirements for container or piping protection are based on calculations and snowfall maps from ASCE 7. The threshold for protecting containers and appurtenances from snow has been raised to 100 lb/ft2 (488 kgf/m2).
    • Basic fire extinguisher requirements are centralized to Section 4.7, with individual capacity requirements remaining in the specific application section.
    • Appurtenance requirements in Table 5.9.4.1(B) are expanded to cover containers (except DOT Spec. 39, less than 2 lb. propane capacity).
    • Universal tanks are permitted to be filled in the horizontal or vertical orientation, as long as the positioning slot is in the correct orientation.
    • New requirements in Chapter 6 address the placing of ASME tanks that have been disconnected from use.
    • Vehicle barrier protection (VBP) for cylinders protected in a metal cabinet have been removed, along with changing the VBP requirement for 12,000 lb. (53,375 N) protection for vehicle fuel dispensers to 6,000 lb. (26.688 N).

    Order new NFPA 58 today to protect homes, businesses and industrial settings from LP-Gas risks. (Softbound, 163 pp., 2017)

  • How the NFPA Handbooks Differ from Codes and Standards

    THE NFPA HANDBOOKS DIFFER FROM CODES AND STANDARDS

    Ever wonder what the difference is between an NFPA® handbook and a code or standard? We’re glad you asked.

    NFPA codes and standards both provide requirements for achieving outcomes. Handbooks take a deeper dive, providing the full text of a code or standard as well as expert commentary and features such as graphics, decision trees, testing procedures, case studies, sample forms and checklists, and other helpful aids to give a better understanding of the reasoning behind the requirements and how to apply them.

    JUST REMEMBER:

    • A code or standard is a framework—a set of rules to follow with a goal to achieve a certain result
    • A handbook is a connector—linking requirements to application by helping you understand the reasoning behind a code or standard

    The simplest way to think about it is that codes and standards list the technical requirements while handbooks explain those requirements to clarify how to apply them.

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