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Content Description
Fully revised, the 2009 NFPA 54: National Fuel Gas Code facilitates safer installations and better protection against fire and explosion hazards.
Up-to-date with current techniques, products, materials, and construction practices, the 2009 National Fuel Gas Code provides a more effective means of ensuring fuel gas safety on consumers' premises. Based on scores of proposals from Code users like you, it presents designers, installers, AHJs, maintainers, and inspectors of fuel gas systems in buildings with state-of-the-art criteria for the installation and operation of gas piping systems, appliances, equipment, and related accessories.
Changes in the 2009 edition that improve fuel gas safety include:
- New bonding requirement for corrugated stainless steel tubing (CSST) gas piping installed inside buildings protects against threats likely to energize gas piping.
- Addition of a new system of connecting copper tubing using a crimping tool for press-connect fittings
- New rule for a dedicated master shutoff valve for laboratories
- Revised requirements for connectors to radiant tube heaters prevent cracks, leaks, or fractures.
- Additional requirements for commercial cooking appliance connectors will reduce the risk of fugitive gas, potential fires, and subsequent losses.
- Revised requirements for sidewall vent termination ensure reliability and prevent nuisance shutoffs.
- New requirements that all heating boilers have a low water cutoff switch to prevent boiler failure.
Annexes provide valuable advice on sizing and capacities of gas piping, and sizing of venting systems serving appliances...checking for leakage…and emergency procedures for gas leaks. More than 100 graphics visually clarify concepts so you can correctly apply Code requirements. A new Annex provides a detailed list of all changes from the 2006 edition, with the reason for the changes. Take fuel gas hazards seriously and mitigate risks. Stay up-to-code with the 2009
NFPA 54!
Table of Contents
Chapter 1: Administration
Section 1.1: Scope.
Section 1.2: Purpose.
Section 1.3: Retroactivity.
Section 1.4: Equivalency.
Section 1.5: Enforcement.
Chapter 2: Referenced Publications
Section 2.1: General.
Section 2.2: NFPA Publications.
Section 2.3: Other Publications.
Section 2.4: References for Extracts in Mandatory Sections.
Chapter 3: Definitions
Chapter 4: General
Section 4.1: Qualified Agency.
Section 4.2: Interruption of Service.
Section 4.3: Prevention of Accidental Ignition.
Chapter 5: Gas Piping System Design, Materials, and Components
Section 5.1: Piping Plan.
Section 5.2: Provision for Location of Point of Delivery.
Section 5.3: Interconnections Between Gas Piping Systems.
Section 5.4: Sizing of Gas Piping Systems.
Section 5.5: Piping System Operating Pressure Limitations.
Section 5.6*: Acceptable Piping Materials and Joining Methods.
Section 5.7*: Gas Meters.
Section 5.8*: Gas Pressure Regulators.
Section 5.9: Overpressure Protection Devices.
Section 5.10: Back Pressure Protection.
Section 5.11: Low-Pressure Protection.
Section 5.12: Shutoff Valves.
Section 5.13: Excess Flow Valve(s).
Section 5.14: Expansion and Flexibility.
Chapter 6: Pipe Sizing
Section 6.1: Pipe Sizing Methods.
Section 6.2: Tables for Sizing Gas Piping Systems Using Natural Gas.
Section 6.3: Tables for Sizing Gas Piping Systems Using Propane.
Section 6.4: Sizing Equations.
Chapter 7: Gas Piping Installation
Section 7.1: Piping Underground.
Section 7.2: Installation of Piping.
Section 7.3: Concealed Piping in Buildings.
Section 7.4: Piping in Vertical Chases.
Section 7.5: Gas Pipe Turns.
Section 7.6: Drips and Sediment Traps.
Section 7.7: Outlets.
Section 7.8: Branch Pipe Connection.
Section 7.9: Manual Gas Shutoff Valves.
Section 7.10: Prohibited Devices.
Section 7.11: Systems Containing Gas–Air Mixtures Outside the Flammable Range.
Section 7.12: Systems Containing Flammable Gas–Air Mixtures.
Section 7.13: Electrical Bonding and Grounding.
Section 7.14: Electrical Circuits.
Section 7.15: Electrical Connections.
Chapter 8: Inspection, Testing, and Purging
Chapter 9: Appliance, Equipment, and Accessory Installation
Section 9.1: General.
Section 9.2: Accessibility and Clearance.
Section 9.3*: Air for Combustion and Ventilation.
Section 9.4: Appliances on Roofs.
Section 9.5: Appliances in Attics.
Section 9.6: Appliance and Equipment Connections to Building Piping.
Section 9.7: Electrical.
Section 9.8: Room Temperature Thermostats.
Chapter 10: Installation of Specific Appliances
Section 10.1: General.
Section 10.2: Air-Conditioning Appliances (Gas-Fired Air Conditioners and Heat Pumps).
Section 10.3: Central Heating Boilers and Furnaces.
Section 10.4: Clothes Dryers.
Section 10.5: Conversion Burners.
Section 10.6: Decorative Appliances for Installation in Vented Fireplaces.
Section 10.7: Gas Fireplaces, Vented.
Section 10.8: Non-Recirculating Direct Gas-Fired Industrial Air Heaters.
Section 10.9: Recirculating Direct Gas-Fired Industrial Air Heaters.
Section 10.10: Duct Furnaces.
Section 10.11: Floor Furnaces.
Section 10.12: Food Service Appliance, Floor-Mounted.
Section 10.13: Food Service Appliances, Counter Appliances.
Section 10.14: Hot Plates and Laundry Stoves.
Section 10.15: Household Cooking Appliances.
Section 10.16: Illuminating Appliances.
Section 10.17: Incinerators, Commercial-Industrial.
Section 10.18: Infrared Heaters.
Section 10.19: Open-Top Broiler Units.
Section 10.20: Outdoor Cooking Appliances.
Section 10.21: Pool Heaters.
Section 10.22: Refrigerators.
Section 10.23: Room Heaters.
Section 10.24: Stationary Gas Engines.
Section 10.25: Gas-Fired Toilets.
Section 10.26: Unit Heaters.
Section 10.27: Wall Furnaces.
Section 10.28: Water Heaters.
Section 10.29: Compressed Natural Gas (CNG) Vehicular Fuel Systems.
Section 10.30: Appliances for Installation in Manufactured Housing.
Section 10.31: Fuel Cell Power Plants.
Section 10.32: Outdoor Open Flame Decorative Appliances.
Chapter 11: Procedures to Be Followed to Place Appliance in Operation
Section 11.1: Adjusting the Burner Input.
Section 11.2*: Primary Air Adjustment.
Section 11.3: Safety Shutoff Devices.
Section 11.4: Automatic Ignition.
Section 11.5: Protective Devices.
Section 11.6*: Checking the Draft.
Section 11.7: Operating Instructions.
Chapter 12: Venting of Appliances
Section 12.1: Minimum Safe Performance.
Section 12.2: General.
Section 12.3: Specification for Venting.
Section 12.4: Design and Construction.
Section 12.5: Type of Venting System to Be Used.
Section 12.6: Masonry, Metal, and Factory-Built Chimneys.
Section 12.7: Gas Vents.
Section 12.8: Single-Wall Metal Pipe.
Section 12.9*: Through-the-Wall Vent Termination.
Section 12.10: Condensation Drain.
Section 12.11: Vent Connectors for Category I Appliances.
Section 12.12: Vent Connectors for Category II, Category III, and Category IV Appliances.
Section 12.13: Draft Hoods and Draft Controls.
Section 12.14: Manually Operated Dampers.
Section 12.15: Automatically Operated Vent Dampers.
Section 12.16: Obstructions.
Chapter 13: Sizing of Category I Venting Systems
Annex A: Explanatory Material
Annex B: Coordination of Appliance and Equipment Design, Construction, and Maintenance
Section B.1: Coordination.
Section B.2: Appliance and Equipment Design and Construction Checklist.
Section B.3: Maintenance of Appliances and Equipment.
Annex C: Sizing and Capacities of Gas Piping
Section C.1: Sizing Factors.
Section C.2: General Pipe Sizing Considerations.
Section C.3: Description of Tables.
Section C.4: Use of Capacity Tables.
Section C.5: Use of Sizing Equations.
Section C.6: Pipe and Tube Diameters.
Section C.7: Use of Sizing Charts.
Section C.8: Examples of Piping System Design and Sizing.
Annex D: Suggested Method of Checking for Leakage
Section D.1: Use of Lights.
Section D.2: Leak Check Using the Gas Meter.
Section D.3: Leak Check Not Using a Meter.
Section D.4: When Leakage Is Indicated.
Annex E: Suggested Emergency Procedure for Gas Leaks
Annex F: Flow of Gas Through Fixed Orifices
Annex G: Sizing of Venting Systems Serving Appliances Equipped with Draft Hoods, Category I Appliances, and Appliances Listed for Use with Type B Vents
Annex H: Recommended Procedure for Safety Inspection of an Existing Appliance Installation
Annex I: Indoor Combustion Air Calculation Examples
Section I.1: New Installation.
Section I.2: New Installation, Known Air Infiltration Rate Method.
Section I.3: New Installation, Known Air Infiltration Rate Method.
Annex J: Example of Combination of Indoor and Outdoor Combustion and Ventilation Opening Design
Annex K: Other Useful Definitions
Annex L: Enforcement
Annex M: Informational References
Section M.1: Referenced Publications.
Section M.2: Informational References.
Section M.3: References for Extracts in Informational Sections. (Reserved)
