Last Updated Fri, 10/25/2024 - 19:42
Fuel Cell Codes and Standards
… This publication applies to HYCO plants that produce hydrogen, carbon monoxide, or mixtures thereof, with a nominal production capacity greater than 9 MMSCFD hydrogen or carbon monoxide/syngas (approximately 10 000 …
Last Updated Wed, 07/09/2025 - 15:39
FAQ
… The suspected cause was a mixture of oxygen and hydrogen that passed downstream from the electrolysis unit into several storage vessels. Hydrogen-oxygen mixtures are very hazardous. Subsequent … and preventing the accumulation of oxygen within the hydrogen system is important for safe operation. … 806 … 2106 …
Last Updated Thu, 12/05/2024 - 18:04
Fuel Cell Codes and Standards
… performances for electric energy storage systems using hydrogen. This is applicable to the systems which use …
Last Updated Fri, 07/18/2025 - 21:01
AWST Protocol
… of the electrochemical reaction, low gas permeation of hydrogen and oxygen through the membrane is crucial to run …
Last Updated Thu, 07/03/2025 - 14:36
FAQ
… Hydrogen flames can be nearly invisible in daylight, … especially at low flowrates. The concentration of hydrogen does not have much effect on the color of the flame. Many hydrogen incidents or fires will have a bright orange hue, or …
Last Updated Mon, 06/30/2025 - 16:01
FAQ
… Understand any reactions the hydrogen can add to what is being vented. For instance, O2/H2 … parameters of the streams to ensure no back flow into the hydrogen system or vice versa. Ensure the venting/flaring system can handle the hydrogen flow parameters. … 894 … 914 … In a plant where …
Last Updated Mon, 06/30/2025 - 16:13
FAQ
… Low-pressure vents at mostly low hydrogen purity are not as large safety risk as high-pressure pure hydrogen vents. These vents should still go to a vent stack, … the reaction forces of the flow exiting and the hydrogen cloud should be modeled based on NFPA 2 to ensure …
Last Updated Thu, 07/03/2025 - 14:44
FAQ
… frozen air (which contains oxygen) has built up within a hydrogen process or vent system. These incidents with vent … cold and allows air into the system in contact with a cold hydrogen stream. Vent systems are at risk since they are … might result in the aspiration of air into a cold hydrogen flow which then leads to the freezing of the air. A …
Last Updated Mon, 06/30/2025 - 16:16
FAQ
… A release is defined by the amount of hydrogen, the rate of hydrogen flow, vent location (indoors or outdoors), geometry … could be defined as a release that keeps the flammable hydrogen cloud from damaging its surroundings. … 867 … 894 … …
Last Updated Thu, 06/19/2025 - 15:49
FAQ
… condition for vent stacks is to always assume that the hydrogen will ignite. The stack musts be designed such that … radiation to surrounding personnel and exposures. Although hydrogen fires have comparatively low radiation compared to … Also, the temperature of the flame is very high, so if the hydrogen flame contacts materials around the vent stack, they …
Last Updated Thu, 06/19/2025 - 16:02
FAQ
… Catalytic recombiners are effective at preventing flammable hydrogen mixtures and also sometimes useful to monitor hydrogen concentrations through heat evolution when an … can be catalytically converted, above which combustible hydrogen mixtures are still possible. In a fully enclosed …
Last Updated Mon, 06/30/2025 - 16:09
FAQ
… Delayed ignition is a significant hazard for hydrogen releases, either intended or unintended. The primary … vapor cloud which could contain a significant quantity of hydrogen. The H2Tools Incidents database contains a number of …
Last Updated Thu, 06/06/2024 - 23:54
HyARC Data Page
Last Updated Fri, 05/31/2024 - 05:14
Calculator Tools
… [UK] barrel [US, dry] barrel [US, federal] barrel [US, liquid] barrel [US, petroleum] board foot bucket [UK] bucket … petroleum] fifth gallon [UK] gallon [US, dry] gallon [US, liquid] gill [UK] gill [US] hectare meter hectoliter hogshead … microliter milliliter minim [UK] minim [US] ounce [UK, liquid] ounce [US, liquid] peck [UK] peck [US] pint [UK] pint …
Last Updated Fri, 10/18/2024 - 20:32
Fuel Cell Codes and Standards
… streams. It specifically applies to large volume hydrogen production plants, defined for this publication as a …
Last Updated Wed, 04/23/2025 - 18:36
Document Library
… of candidate metal hydrides being considered for hydrogen storage applications. A three-task research program …
Last Updated Wed, 10/16/2024 - 18:43
Fuel Cell Codes and Standards
… and maintenance of site-built and modular gaseous hydrogen fueling stations (HFS) for light duty vehicles, …
Last Updated Thu, 06/26/2025 - 16:33
FAQ
… is not required. The rupture disc is not supposed to vent hydrogen unless the cylinder is engulfed in a fire both … required to maintain cylinder integrity. Although adding hydrogen to a fire is not a perfect solution, it is better than a cylinder explosion and then still adding hydrogen to the fire. An interstage regulator relief device …
Last Updated Mon, 08/05/2024 - 23:47
Team
… has conducted in-depth research on topics related to hydrogen safety, including deflagration venting, vapor cloud …
Last Updated Mon, 08/05/2024 - 23:43
Team
… own consulting firm to advance the safe implementation of hydrogen fuel cell and supply chain technologies. … Rick …
