TY JOUR TI FEATURES OF THE ASSESSMENT OF RISKS AT DEPRESSURIZATION OF RAILWAY TANKS WITH THE EMERGENCY CHEMICALLY DANGEROUS SUBSTANCES DURING TRANSPORTING KW chemically dangerous object KW emergency chemically hazardous substances KW risk JO Problems of risk management in the technosphere AU Savchuk, O.N. AU Ivanov, A.Y. PY 2014 IS 2014 PB Saint-Petersburg University of State Fire Service of Emercom of Russia