Abstract: There is a big dispute on whether flame arrester should be installed on the hydrogen vent pipeline of the hydrogen fueling station within the industry. This paper discusses the necessity of installing flame arresters on the hydrogen vent pipeline of the hydrogen fueling station, foreign and domestic hydrogen-related standards and the practical experience of hydrogenation fueling stations. The results show that flame arresters should not be installed on the hydrogen vent pipeline in order to ensure the safe relief of the hydrogen storage vessel and hydrogen refueling system.

Key words: hydrogen fueling station, hydrogen vent pipeline, flame arrester