Last Updated Fri, 10/18/2024 - 20:30
Fuel Cell Codes and Standards
… streams. It specifically applies to large volume hydrogen production plants, defined for this publication as a …
Last Updated Fri, 10/25/2024 - 19:53
Fuel Cell Codes and Standards
… operating of bulk storage systems (argon, carbon dioxide, hydrogen, nitrogen, nitrous oxide, and oxygen) in courts or …
Last Updated Fri, 10/04/2024 - 18:41
Fuel Cell Codes and Standards
… use. The document applies only to compressed gaseous hydrogen-fuelled fuel cell power systems. The document does …
Last Updated Tue, 07/01/2025 - 16:45
FAQ
… There are many potential sources of delayed ignition. Hydrogen is easily ignited, and the larger the cloud, the … mix in the air creating a static charge which ignites the hydrogen. Similarly, the force of the release can cause …
Last Updated Mon, 06/30/2025 - 16:38
FAQ
… it’s also possible that the cold temperatures from the hydrogen itself can freeze them and progressively block the … very largest systems and vent piping. Typically, liquid hydrogen is also stored and saturated at an elevated pressure, so a significant portion of the liquid hydrogen will immediately flash into a vapor when released to …
Last Updated Tue, 07/01/2025 - 16:38
FAQ
… vent system as NG is less dense than air. For nearly pure hydrogen the recommendations of this presentation are in …
Last Updated Mon, 07/07/2025 - 15:15
FAQ
… tubing materials and tube wall thicknesses suitable for hydrogen and pressures you are using. Make sure all tubing …
Last Updated Mon, 06/30/2025 - 14:53
FAQ
… charge) and the low ignition energy, it is assumed that hydrogen in the air will ignite (between 4 -74%), as it does … no ignition. Other Information: The ignition energy of hydrogen is .02 millijoules. By definition, a joule is equal … at 1m/s against a metal surface, and the ignition of hydrogen over many concentrations was observed. … 815 … 939 … …
Last Updated Mon, 08/05/2024 - 23:46
Team
… of Science and Technology. Don is a past-chair of the Hydrogen Safety Panel. … Donald Frikken …
Last Updated Thu, 11/14/2024 - 18:54
Fuel Cell Codes and Standards
… and the environment inside and outside the vehicle against hydrogen related hazards – the marking and labelling …
Last Updated Wed, 07/16/2025 - 14:53
FAQ
… … 882 … 895 … 804 … How much ventilation would a hydrogen compressor enclosure need in California, assuming …
Last Updated Tue, 06/24/2025 - 19:45
FAQ
… substances prior to performing maintenance. For gaseous hydrogen systems, methods such as a blind flange, a double … quickly. A disadvantage of the double valve is that hydrogen may leak through the first valve and allow pressure … failure mode of the double block valve arrangement. For hydrogen systems, the outlet of the bleed valve should be …
Last Updated Tue, 07/01/2025 - 16:17
FAQ
… 2) or NFPA 497 to evaluate larger vent releases where the hydrogen cloud will extend beyond the prescriptive distances. …
Last Updated Thu, 11/14/2024 - 16:29
Fuel Cell Codes and Standards
… technical requirements for the safe integration of gaseous hydrogen fueled Proton Exchange Membrane (PEM) Fuel Cell …
Last Updated Tue, 07/01/2025 - 16:01
FAQ
… but then larger banks that contain larger quantity of hydrogen that will be released in a single event. The main … must be closed during transport), a smaller release of hydrogen would occur. … 945 … 892 … 2061 … There is an …
Last Updated Thu, 06/26/2025 - 16:14
FAQ
… For lightening refer to NFPA 780 and for grounding of the Hydrogen equipment, refer to NFPA 70 (Article 250 and Article …
Last Updated Thu, 04/10/2025 - 16:07
Fuel Cell Codes and Standards
… (natural gas, liquefied petroleum gas, propane, butane, hydrogen etc.) or liquid fuel (kerosene, methanol etc.); …
Last Updated Mon, 06/23/2025 - 16:42
FAQ
… will likely point to compliance with NFPA 2/55 for the hydrogen and other gas supply systems, ASME Boiler and …
Last Updated Thu, 06/26/2025 - 16:56
FAQ
… There is no specific requirement not to vent liquid hydrogen from a vent system. Best practice would be to only …
Last Updated Thu, 07/11/2024 - 17:30
Calculator Tools
… to obtain the heating value of a given mass or volume of hydrogen or other fuels, or to calculate the mass or volume … Desired Output: Heating Values Fuel Amount Fuel: Hydrogen Natural Gas Still Gas (in refineries) Crude Oil … Ester (biodiesel, BD) Fischer-Tropsch Diesel (FTD) Liquid Hydrogen Methyl Tertiary Butyl Ether (MTBE) Ethyl Tertiary …
