Last Updated Mon, 07/14/2025 - 15:11
FAQ
… to clear personnel from the immediate area, isolate the hydrogen, shut down the equipment, contact local responders, … … 1013 … What are the emergency response procedures for a hydrogen-related incident? … Hydrogen emergency response procedures …
Last Updated Mon, 07/14/2025 - 15:47
FAQ
… from corrosion. Both types of installation must have hydrogen vents routed to a safe location above grade. … 891 … 883 … 895 … What are the concerns about underground hydrogen storage? … Concerns with underground hydrogen storage …
Last Updated Tue, 07/15/2025 - 14:42
FAQ
… Liquid hydrogen is much less likely to pool than liquified natural … under tanks, as well as diversion systems to allow liquid hydrogen to spill and boil off in a safe area. Care needs to … … 893 … Are remote impoundment basins required for liquid hydrogen facilities like those used for LNG facilities? … …
Last Updated Thu, 07/03/2025 - 14:59
FAQ
… ventilation intakes, and protected from vehicle impact. Hydrogen storage separation distance requirements are typically based on the quantity and pressure of the hydrogen or the piping diameter, depending on the type of … containers to prevent interaction during an unintended hydrogen release. More detailed guidance can be found in the …
Last Updated Mon, 07/07/2025 - 16:24
FAQ
… radiation analysis should be conducted to ensure that the hydrogen cloud will not interfere with the flight path of … … 920 … 1020 … 2080 … What are some considerations of hydrogen vent stacks at an airfield with regard to planes overhead? … Hydrogen vent stacks at airfields …
Last Updated Mon, 06/23/2025 - 16:06
FAQ
… Because hydrogen is labeled as a hazardous substance, sometimes … about the environmental impact of releasing liquid hydrogen. There are currently no regulations that require reporting of hydrogen releases for environmental reasons. However, there …
Last Updated Mon, 07/21/2025 - 16:53
FAQ
… involving a mixture of flammable gases, including hydrogen. … 808 … 859 … 816 … 843 … Are you aware of any company using foam and mesh technology to help prevent hydrogen explosions? … Hydrogen Testing – Explosion Prevention …
Last Updated Thu, 07/03/2025 - 15:18
FAQ
… , for a description of different purging approaches for hydrogen systems. … 947 … 927 … 882 … What reference is … available to help me understand purging requirements for hydrogen gas systems? … Hydrogen System Purging Requirements …
Last Updated Wed, 06/18/2025 - 15:36
FAQ
… and the failure modes. There are concerns about allowing hydrogen concentrations as large as 3.5% for the high level alarm. Since VOCs are mixed with the hydrogen, the mixture lower flammability limit is probably … 4%. A typical practice would use 25% of the LFL, or 1% hydrogen), for alarm, not 1.5% to 3.5%. The vacuum may be an …
Last Updated Mon, 07/21/2025 - 14:48
FAQ
… Fire Code and NFPA 2 apply to non-transportation use of hydrogen. These are maturing quickly, with NFPA 2 currently … tanks, fueling connections, and filling protocols. Liquid hydrogen transfer is well proven and established for … … Who can provide an understanding of the progress of U.S. hydrogen standards for H2 in transport? Is anyone working on …
Last Updated Thu, 06/19/2025 - 16:07
FAQ
… be evaluated, but if a constant flow of either nitrogen or hydrogen is provided, then the configuration should be … back in service. If purging becomes required for a liquid hydrogen vent system, the only acceptable gas per CGA G-5.5 … as this is the only gas that does not solidify at liquid hydrogen temperatures. … 947 … 894 … 882 … 958 … 924 … On …
Last Updated Tue, 07/01/2025 - 15:50
FAQ
… Nearly all hydrogen storage tanks and hydrogen storage systems will need some type of pressure … there are pressure relief devices, some means to vent the hydrogen to a safe location will be needed. An exception to …
Last Updated Mon, 07/07/2025 - 16:44
FAQ
… and valve materials with gas contents, ASME B31.12, Hydrogen Pipe and Pipelines, and NFPA 2, Hydrogen Technologies Code. The Sandia Technical Reference … site (https://h2tools.org/technical-reference-for-hydrogen-compatibility-ofmaterials) also provides information …
Last Updated Mon, 07/07/2025 - 16:50
FAQ
… Releases from high pressure hydrogen systems often make a sound. In those cases, sound … an area. … 813 … 2085 … 832 … 2086 … If the flame from hydrogen is not visible in daylight, would it still produce a sound that is detectable? … Sound detectability of hydrogen leaks …
Last Updated Thu, 11/14/2024 - 14:20
Fuel Cell Codes and Standards
… information that designers, builders, and users of hydrogen systems can use to avoid or resolve hydrogen hazards. Guidelines are presented for system design, … … AIAA G-095 Guide to Safety of Hydrogen and Hydrogen Systems …
Last Updated Mon, 06/23/2025 - 16:03
FAQ
… it is always best to ensure that locations where leaking hydrogen can accumulate are minimized/avoided, and that hydrogen sensors are placed in strategic locations where hydrogen can potentially collect. Potential ignition sources …
Last Updated Mon, 07/07/2025 - 15:13
FAQ
… safe location, if it safe to do so, isolate the source of hydrogen feeding the fire. Burns and explosions are hazards when exposed to a hydrogen fire. For more best laboratory preventative safety practices as well as first responder response to a hydrogen incident See both CHS training resources: …
Last Updated Mon, 07/14/2025 - 17:11
FAQ
… There are advantages to reducing the amount and rate of hydrogen released. Relief devices should not be oversized … of flow will lower reaction forces and the mass of hydrogen in the released cloud during an event. A method to reduce the amount of hydrogen released is to use relief devices that reclose …
Last Updated Wed, 07/09/2025 - 14:52
FAQ
… for selecting a detector. A common setpoint for gaseous hydrogen detection is 25% of LFL, or 1% concentration in air. … trips. … 2089 … 1027 … What attributes are important for a hydrogen leak detector? What concentration of hydrogen is the normal set point? … Key attributes for …
Last Updated Mon, 07/07/2025 - 15:27
FAQ
… is a frequent source of ignition attributed to various hydrogen releases. Low levels of static electricity are sufficient to ignite hydrogen – air mixtures. Static charges can be created by the … … 879 … 915 … 823 … Can static discharges really ignite hydrogen releases? … Hydrogen ignition from static electricity …
