TY JOUR TI PROBLEMS OF ENSURING PUBLIC SAFETY DURING STORAGE AND TRANSPORTATION OF LIQUEFIED HYDROCARBON GASES IN THE PERMAFROST REGIONS OF THE ARCTIC KW liquefied hydrocarbon gases KW liquefied natural gas KW gas filling station KW permafrost KW methane-propane JO Problems of risk management in the technosphere AU Savchuk, O.N. PY 2026 IS 2025 PB Saint-Petersburg University of State Fire Service of Emercom of Russia