Risk Assessment for a Gas and Liquid Hydrogen Fueling Station

摘要

Hydrogen fueling stations are critical infrastructure for facilitating the commercialization of fuel cell vehicles (FCVs). In Japan, few hydrogen fueling stations have been built but several are under design or construction stages. It will be difficult to construct stand-alone hydrogen fueling stations in many locations in Japan because of the narrow spaces in urban cities. Therefore, hybrid stations with gasoline and hydrogen supply systems will be constructed to effectively use small spaces. Safety measures must be incorporated into the stations. Although stand-alone hydrogen fueling stations using compressed and liquid hydrogen have been investigated with risk assessment, the hybrid gasoline-hydrogen fueling stations have not been analyzed yet. This paper presents risk assessment from a Hazard Identification Study (HAZID) for identification of inherent accident scenarios and risks relating to gasoline and hydrogen supply systems. The study shows that HAZID was an effective assessment tool because it indicated similar accident scenarios analyzed by HAZOP and FMEA. Furthermore, HAZID revealed inherent scenarios and risks.