TY JOUR TI FEATURES OF ENSURING FIRE SAFETY OF A HYDROGEN FILLING STATION DURING THEIR OPERATION KW hydrogen KW hydrocarbon gas KW filling station KW design features KW fire safety KW economic effect JO Problems of risk management in the technosphere AU Egorov, A.A. PY 2024 IS 2024 PB Saint-Petersburg University of State Fire Service of Emercom of Russia