Guidelines for Use of Hydrogen Fuel in Commercial Vehicles: Greencell Technologies Part 2
GreenCell Technologies, Canada Part 2: In some ways, a gaseous hydrogen fuel leak is less dangerous than a leak of diesel fuel or gasoline. Leaking diesel fuel and gasoline can puddle and spread over a large area, and the puddles will persist because they evaporate slowly. Gaseous hydrogen leaks tend to be vertical, with only a relatively narrow area/volume in which a flammable mixture exists—the hydrogen quickly rises and dissipates in open air to nonhazardous levels.
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