Last Updated Fri, 12/06/2024 - 14:12
Fuel Cell Codes and Standards
… permanently mounted pressure vessel containing compressed hydrogen gas for designs that are fueled without the pressure … with maximum pressures of 25 MPa or 35MPa. … The standard was published in May 2006 as an ANSI standard, and is available through UL. The document was recently revised to address those areas of UL 2267 …
Last Updated Wed, 07/09/2025 - 15:31
FAQ
… as pressure, temperature, and flow. The sub-cooled liquid hydrogen (sLH2) approach for fueling is comparable to other … pressure, under 20 bar (290 psi), than “cryo-compressed” hydrogen (CCH) systems which commonly operate at 350 bar(5100 psi). sLH2 systems operate more like a liquid hydrogen (LH2) system that operates at a slightly higher …
Last Updated Mon, 07/14/2025 - 16:02
FAQ
… By definition, liquid hydrogen can BLEVE, but this is highly unlikely. Liquid hydrogen is stored in a double wall tank with vacuum … … 921 … 772 … 2115 … Can an external fire on a liquid hydrogen storage tank result in a BLEVE (Boiling Liquid …
Last Updated Tue, 06/24/2025 - 21:23
FAQ
… While this shock wave may be sufficient to ignite the hydrogen, mesh on the outlet will not create the conditions … the risk of DDT (Deflagration to Detonation Transition) if hydrogen ignites? … DDT and Mesh for Hydrogen Vent Outlet …
Last Updated Wed, 06/18/2025 - 17:07
FAQ
… There is no generalized exception for hydrogen fueling stations. However, PSM is intended for … to all systems and it’s a best practice to apply to all hydrogen systems regardless of quantity or exemption status. … vehicles develops. … 819 … 1247 … Does PSM apply to hydrogen fueling or refueling stations with more than 10,000 …
Last Updated Fri, 04/18/2025 - 19:40
HIAD Event
… hydrogenation unit of a pharamceutical company. 145 kg of hydrogen were released the atmosphere at the gas circulation … element). The safety flare of the affected plant was triggered, the plant operations management and plant fire … the hydrogen supply to the neighboring hydrogenation unit was stopped and the system was switched to circular …
Last Updated Wed, 06/18/2025 - 16:05
FAQ
… on how frequently to change a rupture disk of a hydrogen tube trailer? Existing guidance points to changing it every 1 to 10 years. … Hydrogen Rupture Discs …
Last Updated Sat, 06/01/2024 - 07:34
Basic page
… This is a list of acronyms and terms used in the Hydrogen Analysis Resource Center. A full glossary of hydrogen terms is also available on the EERE Fuel Cell … by a four-digit code. Established in the 1930s, it was supplanted by the six-digit North American Industry …
Last Updated Mon, 07/14/2025 - 16:30
FAQ
… Estimated lifetimes are below in years: • Liquid Hydrogen Tanks: 15-20 years between refurbishment but … 882 … How can I estimate the life expectancy of liquefied hydrogen products (valve, instrument, tank, tank trainer, pump, piping, etc.)? … Liquified hydrogen components life expectancy …
Last Updated Thu, 10/17/2024 - 18:41
Fuel Cell Codes and Standards
… transmission and distribution systems carrying pure hydrogen and hydrogen mixtures. It is limited to gaseous products with a … MPa, and defined concentration criteria. … The 1st edition was published in 2005, and re-affirmed in 2013. It is …
Last Updated Wed, 07/09/2025 - 14:44
FAQ
… … 832 … 2090 … 2091 … 2092 … In a vessel, how much hydrogen leakage or loss is usually expected? … Hydrogen leakage from vessels …
Last Updated Wed, 04/23/2025 - 18:40
Document Library
… The HSP has reviewed many safety plans for gaseous hydrogen. An emerging trend is the use of liquid (cryogenic) hydrogen in the commercial market, potentially near residential areas, for fueling hydrogen fuel cell vehicles. Finding a “qualified” person to …
Last Updated Wed, 07/16/2025 - 15:08
FAQ
… Hydrogen cylinders contain pure hydrogen unless they are specifically manufactured for and … When emptied, the residual is still the same purity of hydrogen, just at lower pressure. If emptied to atmospheric …
Last Updated Tue, 07/15/2025 - 15:51
FAQ
… applications. … 808 … 848 … 816 … 843 … 859 … Has the Hydrogen Safety Panel had inquiries about metal mesh or … foam being used in composite or metal containers for hydrogen use as an explosion prevention system in accordance with NFPA 69? … Hydrogen Vessel Explosion Prevention …
Last Updated Mon, 06/30/2025 - 15:32
FAQ
… When it is necessary or desirable to work on a part of a hydrogen system while another part of the system remains in … (vent) valve is open. This arrangement assures that any hydrogen leaking through the valve on the pressurized side … double block and bleed (DBB) valve arrangements be used in hydrogen systems? … Hydrogen Double Block and Bleed Valve …
Last Updated Thu, 05/02/2024 - 20:19
Video
… Hydrogen verses propane flame comparison, and differences in … that should be taken in each case, of a propane verses a hydrogen flame environment. … Hydrogen Propane Flame Comparison …
Last Updated Tue, 08/12/2025 - 22:51
HyARC Data Page
… spreadsheet provides characteristics of active and planned hydrogen stations outside of the United States. Fueling stations used to refuel over-the-road hydrogen vehicles are the intended scope; stations built for the sole purpose of supplying hydrogen to other vehicles (e.g., forklifts, boats, or …
Last Updated Wed, 07/09/2025 - 15:09
FAQ
… Hydrogen has been transported safely through pipelines for … need to be considered for the use of natural gas – hydrogen blends? … Natural gas-hydrogen blends pipe considerations …
Last Updated Tue, 07/15/2025 - 14:56
FAQ
… of pressure and temperature on the flammability limits of hydrogen/oxygen mixtures? … Hydrogen Flammability Limits - Mixtures …
Last Updated Wed, 04/23/2025 - 18:45
Document Library
… in the production, storage, distribution, and use of hydrogen are essential for the widespread acceptance of hydrogen and fuel cell technologies. A catastrophic failure in any hydrogen project could damage public perception of hydrogen …
