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http://dx.doi.org/10.14346/JKOSOS.2022.37.6.158

Risk Analysis of Jet Flame Occurred at Hydrogen Fuel Cell Vehicle  

Byoungjik, Park (Fire Research Institute, Korea Institute of Civil Engineering and Building Technology)
Yangkyun, Kim (Fire Research Institute, Korea Institute of Civil Engineering and Building Technology)
Ohk Kun, Lim (Department of Police and Fire Administration, Dong-A University)
Publication Information
Journal of the Korean Society of Safety / v.37, no.6, 2022 , pp. 158-165 More about this Journal
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.
Keywords
fuel cell vehicle; hydrogen jet fire; TPRD(Thermally activated Pressure Relief Device); first responder; risk analysis;
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Times Cited By KSCI : 3  (Citation Analysis)
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