NFPA 55: Compressed Gases and Cryogenic Fluids Code

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2016 NFPA 55 Code
Prior Years Prior Editions of NFPA 55

The 2016 edition of NFPA 55 helps users ensure industrial safety around compressed gases and cryogenic fluids.

Compressed gases and cryogenic fluids require special safety measures that offer protection from physiological, over-pressurization, explosive, and flammability hazards. NFPA 55: Compressed Gases and Cryogenic Fluids Code fills the safety gap with the most comprehensive set of industrial gas requirements in the National Fire Codes.

Depend on the 2016 edition of NFPA 55 for the latest fundamental requirements essential for safe installation, storage, use, and handling of gases in portable and stationary containers, cylinders, equipment, and tanks in all occupancy types.

Major changes respond to industry needs and help you work more confidently:

  • Complete reorganization of hydrogen requirements works to clarify requirements by system size.
  • New chapter addresses the safe storage and use of liquid nitrous oxide.
  • Changes to CO2 system requirements expand requirements for beverage systems.

NFPA 55 is essential for installers, contractors, engineers, facility managers, and anyone responsible for safety in settings that use, produce, or distribute compressed gases or cryogenic fluids. It's also a must-have resource for code enforcers, inspectors, and environmental health and safety (EHS) personnel. (Softbound, 143 pp., 2016)

NFPA® 55 Compressed Gases and Cryogenic Fluids Code, 2016 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.
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 Permits.
4.2 Emergency Plan.
4.3 Facility Closure.
4.4 Out-of-Service Stationary Bulk Gas Systems.
4.5 Management Plan and Hazardous Materials Documentation.
4.6 Release of Hazardous Materials.
4.7 Personnel Training.
4.8 Emergency Response Liaison.
4.9 Ignition Source Controls.
4.10 Signs.
4.11 Protection from Vehicular Damage.
4.12 Building Construction Materials.
Chapter 5 Classification of Hazards
5.1 Hazardous Materials Classification.
Chapter 6 Building-Related Controls
6.1 General.
6.2 Control Areas.
6.3 Occupancy Protection Levels.
6.4 Gas Rooms.
6.5 Detached Buildings.
6.6 Weather Protection.
6.7 Electrical Equipment.
6.8 Employee Alarm System.
6.9 Explosion Control.
6.10 Fire Protection Systems.
6.11 Lighting.
6.12 Hazard Identification Signs.
6.13 Spill Control, Drainage, and Secondary Containment.
6.14 Shelving.
6.15 Vent Pipe Termination.
6.16 Ventilation.
6.17 Gas Cabinets.
6.18 Exhausted Enclosures.
6.19 Source Valve.
Chapter 7 Compressed Gases
7.1 General.
7.2 Storage.
7.3 Use and Handling.
7.4 Medical Gas Systems.
7.5 Corrosive Gases.
7.6 Flammable Gases.
7.7 Oxidizing Gases.
7.8 Pyrophoric Gases.
7.9 Toxic and Highly Toxic Gases.
7.10 Unstable Reactive Gases (Nondetonable).
Chapter 8 Cryogenic Fluids
8.1 General.
8.2 Containers - Design, Construction, and Maintenance.
8.3 Pressure Relief Vent Piping.
8.4 Marking.
8.5 Medical Cryogenic Systems.
8.6 Security.
8.7 Separation from Hazardous Conditions.
8.8 Electrical Wiring and Equipment.
8.9 Service and Repair.
8.10 Unauthorized Use.
8.11 Leaks, Damage, and Corrosion.
8.12 Lighting.
8.13 Storage.
8.14 Use and Handling.
Chapter 9 Bulk Oxygen Systems
9.1 General.
9.2 Materials of Construction.
9.3 Location of Bulk Oxygen Systems.
9.4 System Fabrication.
9.5 Inspection.
Chapter 10 Gas Hydrogen Systems
10.1 Applicability.
10.2 General.
10.3 Hydrogen Systems Having Quantities Greater Than the MAQ.
10.4 Bulk Gaseous Hydrogen System.
Chapter 11 Bulk Liquefied Hydrogen Systems
11.1 General.
11.2 Design of Bulk Liquefied Hydrogen Systems.
11.3 Location of Bulk Liquefied Hydrogen Systems.
11.4 Design Considerations at Specific Locations.
11.5 Cargo Transport Unloading.
Chapter 12 Gas Generation Systems
12.1 General.
12.2 Corrosive Gases. (Reserved)
12.3 Flammable Gases - Cryogenic. (Reserved)
12.4 Oxidizing Gases. (Reserved)
12.5 Other Gases. (Reserved)
12.6 Pyrophoric Gases. (Reserved)
12.7 Toxic and Highly Toxic Gases. (Reserved)
12.8 Unstable Reactive Gases. (Reserved)
Chapter 13 Insulated Liquid Carbon Dioxide Systems
13.1 General.
13.2 Uninsulated Carbon Dioxide Compressed Gas Systems.
13.3 Insulated Liquid Carbon Dioxide Systems.
13.4 Materials of Construction.
13.5 Operating Instructions.
13.6 Small Insulated Liquid Carbon Dioxide Indoor Systems.
13.7 Small Insulated Liquid Carbon Dioxide Outdoor Systems.
13.8 Large Indoor Insulated Liquid Carbon Dioxide Systems. (Reserved)
13.9 Large Outdoor Insulated Liquid Carbon Dioxide Systems.
13.10 Carbon Dioxide Beverage Systems.
Chapter 14 Storage, Handling, and Use of Ethylene Oxide for Sterilization and Fumigation
14.1 General.
14.2 Receiving and Unloading Ethylene Oxide Containers.
14.3 Storage of Ethylene Oxide.
14.4 Piping Systems.
14.5 Gas Dispensing Areas.
14.6 Operations.
14.7 Electrical Installation.
14.8 Sterilizer Construction.
14.9 Disposal and Emissions.
14.10 Maintenance.
14.11 Construction.
14.12 Fire Protection.
Chapter 15 Acetylene Cylinder Charging Plants
15.1 General.
15.2 Location.
15.3 Building-Related Controls.
15.4 Design, Installation, and Testing.
15.5 Process Operations.
15.6 Maintenance. (Reserved)
15.7 Special Problems - Raw Materials.
Chapter 16 Liquid Nitrous Oxide Systems
16.1 General.
16.2 Location of Bulk Nitrous Oxide Systems.
16.3 Container Design.
16.4 Container Installation.
16.5 Materials of Construction.
16.6 Vaporizers and Heaters.
16.7 Pumps.
16.8 Strainers and Filters.
16.9 Flow Meters.
16.10 Cleaning.
16.11 Maintenance Procedures.
16.12 Small Insulated Liquid Nitrous Oxide Indoor Systems. (Reserved)
Annex A Explanatory Material
Annex B Attended Operations
Annex C Physical Properties of Hydrogen
Annex D Significant Properties of Ethylene Oxide
Annex E Determination of Separation Distances for Bulk Gaseous Hydrogen Systems
Annex F Sample Ordinance Adopting NFPA 55
Annex G OSHA Requirements for Hydrogen Systems
Annex H Explanation of Methodology Utilized to Develop Separation Distances Table, Table, and Table
Annex I Informational References