TY JOUR TI MODELLING OF EMERGENCY SITUATION OCCURRENCE AND DYNAMICS IN CASE OF EMERGENCY SPILL OF LIQUEFIED NATURAL GAS KW liquefied natural gas KW emergency situation development KW emergency situation KW numerical modelling KW event tree KW scenario approach JO Problems of risk management in the technosphere AU Evloev, Z.B. PY 2025 IS 2025 PB Saint-Petersburg University of State Fire Service of Emercom of Russia