TY JOUR TI RATING OF EXPLOSION HAZARD OF FLAMMABLE LIQUIDS KW index KW flammable liquid KW explosion safety KW calculation JO Scientific and analytical journal «Vestnik Saint-Petersburg university of State fire service of EMERCOM of Russia» AU Alexeev, S.G. AU Pishchalnikov, A.V. AU Kalach, A.V. PY 2014 IS 2014 PB Saint-Petersburg University of State Fire Service of Emercom of Russia