The HSP is not aware of any specific standards for this application, but LNG standards could serve as a useful starting point given the extensive maritime trade of LNG and its use in ship propulsion. Meeting LNG requirements could provide a minimum baseline, with additional considerations needed to account for the colder temperatures of liquid hydrogen (e.g., purging, air liquefaction,…
This is a complex and sometimes contentious topic. The International Code Council (ICC) addresses hydrogen piping in the …
Neither section is a perfect fit for marine hydrogen fueling, but that is often the case with applying Codes. The most prudent approach is to…
The HSP is not aware of any immediate provisions in the IFC or CFC specific to maritime hydrogen fueling, but it would make sense for it to be addressed in either IFC Section 2309, Section 2310, or referenced in both. In NFPA 2, the HSP has not seen any proposals to date; however, anyone who…
I am communicating with a company that is exploring this technology for an application involving a mixture of flammable gases, including hydrogen.
In the case of fuel-rich mixtures like those in the question, the heat of combustion for the mixture should be calculated on the basis of the oxygen content of the mixture. The heat of combustion per mole oxygen is twice the heat of combustion per mole hydrogen, i.e., it is 286*2 kJ per mole O2. You should be able to do the calculations based on this reply.
The HSP is not familiar with this particular fitting or its potential application in H2 service but can offer engineering judgment. Many similar compression-type swaged fittings are used in H2 service. These fittings must be used within the manufacturer recommendations for pressure, temperature, and fluid service. Deformation is also introduced into stainless steel tubing in other ways, such…
The Panel considers two approaches to be acceptable.
It’s not clear if “mobile” in the question refers to vehicle fuel tanks, or vessels used for transportation of hazardous materials.
FCEVs usually contain only a minimal amount of hydrogen fuel pressure (several Mpa) to support getting the car on and off car carriers. Panel members are not aware of any hydrogen release incidents during vehicle loading and don’t know what the probability of such a leak is considering the loading operations. A risk assessment accounting for the probability of collisions as well as leaks from…
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