54 National Fuel
Gas Code -
NFPA 54, National
Fuel Gas Code provides industry-accepted guidance for the safe
installation and operation of fuel gas piping systems, appliances,
equipment, and accessories.
Ensure a safe fuel gas installation using the
2018 edition of NFPA 54/ANSI Z223.1, National Fuel Gas Code.
The 2018 edition includes updates based on
recognized risks, recent research, and the techniques, materials,
developments, and construction practices in use today. From design
to installation, maintenance, and inspection -- no matter what
aspect of fuel gas safety your job involves, the latest edition of
the National Fuel Gas Code is essential.
Update to the 2018 edition of the NFPA 54 for
greater confidence in CSST bonding.
Be sure you're working with the most
up-to-date information on the National Fuel Gas Code's bonding
requirement for corrugated stainless steel tubing (CSST). All CSST
used for fuel gas piping must be bonded to the building grounding
system to prevent damage to the system due to nearby lightning
In the 2018 edition, revisions to piping
requirements include allowing listed arc-resistant jacket or coated
CSST to use the appliance's electrical grounding connector as the
bonding means and recognizing stainless steel smooth wall pipe and
tubing products as acceptable piping materials.
Other changes impact
contractors, installers, and code officials:
- The minimum allowed wall thickness of
carbon and stainless steel pipe is revised to Schedule 10,
however joints on Schedule 10 pipe cannot be made with screwed
- Press-connect fittings are now an
acceptable joining method for pipe.
- Revisions to the venting requirements
include requiring listing to the appropriate UL standards for
plastic venting materials, factory-built chimneys, Type B and BW
vents, chimney lining systems, and special gas vents.
- Direct vent clearances to building
openings for appliances with an input above 150,000 Btu (44 kW)
are to be in accordance with the appliance manufacturer's
- An existing gas appliance installation is
required to be inspected for combustion air and venting code
compliance when the building structure that it is installed in
is modified with specific air infiltration-reducing changes.
Annexes provide a wealth of
additional information such as:
- Details on coordinating appliance and
equipment design, construction, and maintenance -- including a
design and construction checklist
- Steps on checking for leakage and
suggested emergency procedures for gas leaks
Never underestimate fuel gas dangers!
The NFPA 54/ANSI Z223.1, National Fuel Gas
Code provides the most effective means of ensuring fuel gas safety
on consumers' premises.
Update now for the latest pipe sizing tables;
design requirements; installation provisions; inspection, testing,
and purging requirements; and venting system rules that address fuel
Softbound, 168 pp., 2018
NFPA® 54–2012 ANSI Z223.1–2018 National Fuel Gas Code
Chapter 1 Administration
Chapter 2 Referenced Publications
2.2 NFPA Publications
2.3 Other Publications
2.4 References for Extracts in Mandatory Sections
Chapter 3 Definitions
3.2 NFPA Official Definitions
3.3 General Definitions
Chapter 4 General
4.1 Qualified Agency
4.2 Interruption of Service
4.3 Prevention of Accidental Ignition
4.4 Noncombustible Material.
Chapter 5 Gas Piping System Design, Materials, and Components
5.1 Piping Plan
5.2 Provision for Location of Point of Delivery
5.3 Interconnections Between Gas Piping Systems
5.4 Sizing of Gas Piping Systems
5.5 Piping System Operating Pressure Limitations
5.6 Acceptable Piping Materials and Joining Methods
5.7 Gas Meters
5.8 Gas Pressure Regulators
5.9 Overpressure Protection Devices
5.10 Back Pressure Protection
5.11 Low-Pressure Protection
5.12 Shutoff Valves
5.13 Excess Flow Valve(s)
5.14 Expansion and Flexibility
Chapter 6 Pipe Sizing
6.1 Pipe Sizing Methods.
6.2 Tables for Sizing Gas Piping Systems Using Natural Gas
6.3 Tables for Sizing Gas Piping Systems Using Propane
6.4 Sizing Equations
Chapter 7 Gas Piping Installation
7.1 Piping Underground
7.2 Installation of Piping
7.3 Concealed Piping in Buildings
7.4 Piping in Vertical Chases
7.5 Gas Pipe Turns
7.6 Drips and Sediment Traps
7.8 Manual Gas Shutoff Valves
7.9 Prohibited Devices
7.10 Systems Containing Gas–Air Mixtures Outside the
7.11 Systems Containing Flammable Gas–Air Mixtures
7.12 Electrical Bonding and Grounding
7.13 Electrical Circuits
7.14 Electrical Connections
Chapter 8 Inspection, Testing, and Purging
8.1 Pressure Testing and Inspection
8.2 Piping System Leak Check
8.3 Purging Requirements
Chapter 9 Appliance, Equipment, and Accessory Installation
9.2 Accessibility and Clearance
9.3 Air for Combustion and Ventilation
9.4 Appliances on Roofs
9.5 Appliances in Attics
9.6 Appliance and Equipment Connections to Building Piping
9.8 Room Temperature Thermostats
Chapter 10 Installation of Specific Appliances
10.2 Air-Conditioning Appliances (Gas-Fired Air Conditioners
and Heat Pumps)
10.3 Central Heating Boilers and Furnaces
10.4 Clothes Dryers
10.5 Conversion Burners
10.6 Decorative Appliances for Installation in Vented
10.7 Gas Fireplaces, Vented
10.8 Non-Recirculating Direct Gas-Fired Industrial Air
10.9 Recirculating Direct Gas-Fired Industrial Air Heaters
10.10 Duct Furnaces
10.11 Floor Furnaces
10.12 Food Service Appliance, Floor-Mounted
10.13 Food Service Appliances, Counter Appliances
10.14 Household Cooking Appliances
10.15 Illuminating Appliances
10.16 Incinerators, Commercial-Industrial
10.17 Infrared Heaters.
10.18 Open-Top Broiler Units.
10.19 Outdoor Cooking Appliances.
10.20 Pool Heaters.
10.22 Room Heaters.
10.23 Stationary Gas Engines.
10.24 Gas-Fired Toilets.
10.25 Unit Heaters.
10.26 Wall Furnaces.
10.27 Water Heaters.
10.28 Compressed Natural Gas (CNG) Vehicular Fuel Systems.
10.29 Appliances for Installation in Manufactured Housing.
10.30 Fuel Cell Power Plants.
10.31 Outdoor Open Flame Decorative Appliances.
Chapter 11 Procedures to Be Followed to Place Appliance in
11.1 Adjusting the Burner Input
11.2 Primary Air Adjustment
11.3 Safety Shutoff Devices
11.4 Automatic Ignition
11.5 Protective Devices
11.6 Checking the Draft
11.7 Operating Instructions
Chapter 12 Venting of Appliances
12.1 Minimum Safe Performance
12.3 Specification for Venting
12.4 Design and Construction
12.5 Type of Venting System to Be Used
12.6 Masonry, Metal, and Factory-Built Chimneys
12.7 Gas Vents
12.8 Single-Wall Metal Pipe
12.9 Through-the-Wall Vent Termination
12.10 Condensation Drain
12.11 Vent Connectors for Category I Appliances
12.12 Vent Connectors for Category II, Category III, and
Category IV Appliances
12.13 Draft Hoods and Draft Controls
12.14 Manually Operated Dampers
12.15 Automatically Operated Vent Dampers
Chapter 13 Sizing of Category I Venting Systems
13.1 Additional Requirements to Single Appliance Vent
13.2 Additional Requirements to Multiple-Appliance Vent
Annex A Explanatory Material
Annex B Sizing and Capacities of Gas Piping
Annex C Suggested Method of Checking for Leakage
Annex D Suggested Emergency Procedure for Gas Leaks
Annex E Flow of Gas Through Fixed Orifices
Annex F Sizing of Venting Systems Serving Appliances Equipped
with Draft Hoods, Category I Appliances, and Appliances Listed
for Use with Type B Vents
Annex G Recommended Procedure for Safety Inspection of an
Existing Appliance Installation
Annex H Indoor Combustion Air Calculation Examples
Annex I Example of Combination of Indoor and Outdoor Combustion
and Ventilation Opening Design
Annex J Enforcement
Annex K Informational References
Building Codes and Related
Low Voltage / Fire Alarm Related
Electrical Exam Prep
2014 NEC and Related