Electrolyzers/Fuel Cells

This publication provides information on the physical and chemical properties of hydrogen and proper handling and use. It is intended to provide background information for personnel involved in the manufacture, distribution, and use of hydrogen. Additional technical information can be obtained from hydrogen gas manufacturers.

This publication presents design guidelines for hydrogen vent systems used in gaseous and liquid hydrogen systems at user sites and provides recommendations for safe operation of these vents. It begins at the discharge port of safety devices and other components that control the release of hydrogen and ends at the point where hydrogen concentration in the atmosphere is below the lower flammable limits.

This standard describes the specifications and general principles recommended for piping systems for gaseous (Type I) or liquid (Type II) hydrogen. The standard addresses both low and high pressure hydrogen piping systems onsite from the point where hydrogen enters the distribution piping (the battery limits of the hydrogen storage system) to the point of use. For the purposes of this standard, high pressure is defined as gaseous hydrogen at service pressures equal to or greater than 3000 psig (20 680 kPa).

The standard provides fire prevention and protection requirements for safeguarding life and physical property for buildings or facilities that employ stationary fuel cell systems of all sizes. Criteria cover design, construction and installation requirements, including general equipment configuration, siting and interconnections, fuel supplies and storage arrangements, ventilation, exhaust and fire protection. Specific provisions for fuel cell power systems 50 kW or less are also included.

A resource for facts on safe response to electric and hybrid vehicle incidents involving damaged high voltage batteries, battery fires, extrication challenges, submersion, and charging stations. This document covers the vital aspects of EV/hybrid hazard awareness and procedures, including information from related NFPA codes and new consistent Moditech Rescue Solutions® vehicle diagrams.

This code provides fundamental safeguards for the generation, installation, storage, piping, use, and handling of hydrogen in compressed gas (GH2) form or cryogenic liquid (LH2) form. Provisions apply to the production, storage, transfer, and use of hydrogen in all occupancies and on all premises.

Help improve industrial safety around compressed gases and cryogenic fluids with the latest edition of NFPA 55, Compressed Gases and Cryogenic Fluids Code.

Working with and around industrial gas calls for a specialized skill set and understanding of general operating and safety requirements. The 2023 edition of NFPA 55, Compressed Gases and Cryogenic Fluids Code, demonstrates how to mitigate physiological, over-pressurization, explosion, and flammability hazards relating to these highly combustible materials in all types of occupancies.

This NFPA® publication is essential for everyone from installers, contractors, and engineers to code enforcers, inspectors, and environmental health and safety personnel. NFPA 55 provides comprehensive coverage of the fundamentals for safer and more effective installation, storage, use, and handling of gases in portable and stationary containers, cylinders, equipment, and tanks.

Code content covers:

• General requirements for emergency readiness and response
• Classification of hazardous materials
• Building control areas and fire and hazard protection systems
• Storage, use, and handling of compressed gases and cryogenic fluids
• Bulk oxygen, gas hydrogen, bulk liquefied hydrogen, gas generation, and carbon dioxide systems
• Storage, handling, and use of ethylene oxide for sterilization and fumigation
• General requirements and special considerations for acetylene cylinder charging plants
• Provisions and maintenance procedures for liquid nitrous oxide systems
• Cryogenic fluid central supply systems in health care facilities 

This document describes the techniques to be applied for the detection of a leak, using a tracer gas and a tracer gas specific leak detector.