Risk Analysis of Jet Flame Occurred at Hydrogen Fuel Cell Vehicle 


Vol. 37,  No. 6, pp. 158-165, Dec.  2022
10.14346/JKOSOS.2022.37.6158


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  Abstract

Eco-friendly policies proposed by the government of The Republic of Korea have encouraged the use of eco-friendly vehicles. Hydrogen vehicles have exhibited the highest growth rate, although the current number of registered vehicles is low. In hydrogen vehicles, a thermally activated pressure relief device (TPRD) is installed to prevent explosions in the hydrogen gas cylinder. When discharged due to low ignition energy, hydrogen gas readily forms a jet flame. The risks induced by such jet flames were analyzed through a numerical analysis. Jet flames can activate TPRDs installed in nearby hydrogen gas cylinders. As a result, high-voltage cables exposed in the lower area of a vehicle can ignite within seconds. There was a 9.5-kW/m2 area around the vehicle (which can result in casualties) at a distance of ~5 m from the hydrogen gas cylinder, and a 37.5-kW/m2 area (which can cause significant damage) in the form of an inverted triangle toward the lower section of the vehicle. We believe that the risk factors analyzed herein should be considered for addressing accidents in hydrogen vehicles.

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  Cite this article

[IEEE Style]

박병직 and 김. 임옥근, "Risk Analysis of Jet Flame Occurred at Hydrogen Fuel Cell Vehicle," Journal of the Korean Society of Safety, vol. 37, no. 6, pp. 158-165, 2022. DOI: 10.14346/JKOSOS.2022.37.6158.

[ACM Style]

박병직 and 김양균 임옥근. 2022. Risk Analysis of Jet Flame Occurred at Hydrogen Fuel Cell Vehicle. Journal of the Korean Society of Safety, 37, 6, (2022), 158-165. DOI: 10.14346/JKOSOS.2022.37.6158.

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