Answer: A hazardous area is defined as an area in which there is or may develop an explosive atmosphere at concentrations requiring special precautions during the construction, installation and use of a compressed hydrogen filling station. To hazardous areas can refer an area, classified as Zone 0, in which an explosive gas atmosphere exists continuously, for a long period of … Continue reading Question 9: „Hazardous areas“ are designated for hydrogen filling stations. What does this mean for operators and customers of the gas station?