2017 NFPA 58 Code - Current Edition

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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 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)


Interested in other editions of the NFPA 58? Use the drop down menu above to select the edition year you need.

NFPA® 58 Liquefied Petroleum Gas Code, 2017 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. (Reserved)
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.
Chapter 5 LP-Gas Equipment and Appliances
5.1 Scope.
5.2 Containers.
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.
5.18 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.
6.4 Container Separation Distances.
6.5 Other Container Location Requirements.
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 Liquid 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 Equipment Installation.
11.12 Marking.
11.13 Industrial (and Forklift) Trucks Powered by LP-Gas.
11.14 General Provisions for Vehicles Having Engines Mounted on Them (Including Floor Maintenance Machines).
11.15 Engine Installation Other Than on Vehicles.
11.16 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 Definitions.
12.3 Commissioning Vehicles.
12.4 ASME Containers, Materials, and Equipment.
12.5 LP-Gas Fuel Systems.
12.6 Electrical Installation.
12.7 Installation of Pipe, Tubing, and Hose.
12.8 Protection of Pipe, Tube, and Hose.
12.9 Testing of Piping, Tubing, Hose, and Fittings.
12.10 LP-Gas Liquid and Vapor Injectors.
12.11 Fuel Rails and Distribution Blocks.
12.12 Vaporizer/Regulator Systems.
12.13 Fuel Lockoffs.
12.14 Servicing, Parking, and Display of Vehicles Indoors.
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 Maintenance.
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

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