Last Updated Thu, 06/19/2025 - 14:42
FAQ
… Such a compressor should NOT be used for hydrogen. There are many issues with converting a compressor to hydrogen service. First and most important, this must be … by the manufacturer. Examples of concerns for a non-hydrogen compressor used for hydrogen service include (but …
Last Updated Wed, 07/09/2025 - 16:19
FAQ
… common odorants will contaminate fuel cells. Additionally, hydrogen's small molecule and high buoyancy make it … none currently in use. Like liquefied natural gas, liquid hydrogen also can’t be odorized due to its cryogenic temperature. … 1032 … 998 … Can hydrogen be odorized like natural gas? … Odorization of …
Last Updated Thu, 06/19/2025 - 15:38
FAQ
… the end use application. There are a variety of grades of hydrogen that can be purchased. The H2 purity will also vary … production method. CGA G-5.3, Commodity Specification for Hydrogen, lists several typical purities of both liquid and gaseous hydrogen. Standard GH2 available from most suppliers is …
Last Updated Wed, 04/02/2025 - 17:22
Fuel Cell Codes and Standards
… aircraft with compressed natural gas, compressed gaseous hydrogen, biogas and gas blends. Applications with other … the proper requirements and test procedures for gaseous hydrogen fuel dispensers. … OIML R 139 Compressed Gaseous …
Last Updated Tue, 07/15/2025 - 15:10
FAQ
… and standards/guidelines that describe the properties of hydrogen. There are many other organizations and documents that provide similar information. The Center for Hydrogen Safety within AIChE has training material for the properties and safe handling of hydrogen at the following link: Fundamental Hydrogen Safety …
Last Updated Wed, 07/09/2025 - 14:55
FAQ
… Situations where extinguishing a hydrogen leak prior to stopping flow is safer are rare. Hydrogen releases have a high potential for inadvertent … … 2096 … 2097 … Most MSDSs recommend not to extinguish a hydrogen fire, rather to try to disconnect the hydrogen …
Last Updated Wed, 06/18/2025 - 16:46
FAQ
… for most other fuels and need to be certified for use with hydrogen. They are commercially available, and NFPA 69 has a … arresters. Some companies and universities are working on hydrogen diffusion flame burners for turbines. The issue in this case is the stability of the hydrogen diffusion flame on the particular burner …
Last Updated Mon, 06/30/2025 - 15:11
FAQ
… The colors of hydrogen are not different hydrogen molecules. The colors represent the different methods to produce hydrogen. The colors are based on how much carbon is produced …
Last Updated Mon, 07/21/2025 - 14:35
FAQ
… A best practice, even for small hydrogen vents, is to vent to a dedicated vent system outside … their required standards are followed. In the U.S. NFPA 2, Hydrogen Technologies Code, has information in Section 13.3 … is lost. Increasing ventilation to dilute the venting hydrogen can be one method to resolve the situation, but …
Last Updated Thu, 01/23/2025 - 14:59
Fuel Cell Codes and Standards
… and transportation, and safety requirements for pure hydrogen, high pure hydrogen and ultrapure hydrogen. This Part is applicable to hydrogen produced by …
Last Updated Tue, 07/15/2025 - 15:45
FAQ
… Explosion testing with hydrogen should be utilized only where there is not an … by personnel experienced in such testing. Testing with hydrogen is always a challenge and needs to be approached … due to significant differences in properties between hydrogen and propane. Hydrogen can develop significantly …
Last Updated Mon, 07/14/2025 - 16:24
FAQ
… In the U.S., liquid hydrogen fueling stations and dispensing equipment are … Dispensing is covered within Section 11.3. When liquefied hydrogen is used as the supply for high pressure gaseous … a separate standard that governs dispensing of liquid hydrogen at a liquefied hydrogen fueling station? … …
Last Updated Wed, 07/16/2025 - 15:13
FAQ
… Regarding the concept of introducing hydrogen gas into natural gas pipelines, this is indeed a hot … driven by pressure cycling and potentially accelerated by hydrogen. Some analysis has shown that it can be acceptable to operate natural gas pipelines with a hydrogen blend. However, this is highly dependent upon the …
Last Updated Wed, 06/18/2025 - 15:57
FAQ
… The Panel is not aware of any standard for hydrogen detectors for onboard vehicle applications. Some … Report: TIR J3089 Characterization of On-Board Vehicular Hydrogen Sensors, which was published in 2018. … 795 … 873 … 878 … Is there a …
Last Updated Wed, 07/09/2025 - 14:35
FAQ
… While hydrogen gas detectors are less effective outdoors, they can be an important safeguard as part of an overall hydrogen system design. They have been used in many cases to automatically shut down equipment and isolate hydrogen supply. Location and type of detectors depend on the …
Last Updated Wed, 07/16/2025 - 15:20
FAQ
… include the HSP Best Practices online resource and the DOE Hydrogen Safety Training for Researchers, the AIChE Laboratory Safety Course . NFPA 2, Hydrogen Technologies Code, and NFPA 45, Standard on Fire … … 892 … Are there generic best practices for connecting hydrogen cylinders to research equipment? The project in …
Last Updated Tue, 07/01/2025 - 16:31
FAQ
… Hydrogen vent stack fires can create NOx. While not typical, … will require air permits to address the emissions from hydrogen flare systems, and even from intermittent ignition … on the location and interpretation of regulations. A hydrogen flare system is much more likely to require an air …
Last Updated Mon, 06/23/2025 - 16:09
FAQ
… The end use of hydrogen usually drives the cleaning for initial construction. When the hydrogen is used for combustion and many industrial … and leak testing is usually adequate. When the hydrogen needs to be very pure, as is the case for PEM fuel …
Last Updated Wed, 10/23/2024 - 11:35
Fuel Cell Codes and Standards
… information on the physical and chemical properties of hydrogen and proper handling and use. It is intended to … involved in the manufacture, distribution, and use of hydrogen. Additional technical information can be obtained … from hydrogen gas manufacturers. … The 9th edition was published in 2024, and is available at www.cganet.org … …
Last Updated Mon, 07/21/2025 - 14:51
FAQ
… FCEVs usually contain only a minimal amount of hydrogen fuel pressure (several Mpa) to support getting the … and off car carriers. Panel members are not aware of any hydrogen release incidents during vehicle loading and don’t … allowable discharge (non-accident) from the compressed hydrogen storage system for passenger vehicles is A*150 …
