TY JOUR TI MATHEMATICAL MODEL OF COMBINED HYDRAULIC PROTECTION SYSTEM OF THE PETROLEUM TANK KW stationary roof reservoir KW fire KW irrigation KW breathing valves KW fire arrester device JO Scientific and analytical journal «Vestnik Saint-Petersburg university of State fire service of EMERCOM of Russia» AU Tarantsev, A.A. AU Maruhin, P.N. AU Petrova, O.V. PY 2017 IS 2017 PB Saint-Petersburg University of State Fire Service of Emercom of Russia