TY JOUR TI ASSESSMENT OF THE PROBABILITY OF FIRE ESCALATION AT RAILWAY INFRASTRUCTURE FACILITIES KW railway transport KW transportation of dangerous goods KW transshipment tracks KW heat flow KW explosive zones KW fireball JO Problems of risk management in the technosphere AU Samigullin, G.K. AU Tregub, N.A. AU Ivakhnyuk, G.K. PY 2025 IS 2025 PB Saint-Petersburg University of State Fire Service of Emercom of Russia