TY JOUR TI CALCULATION OF AIR EXCHANGE PARAMETERS AT CLOSED FIRES ON OIL AND GAS COMPLEX OBJECTS KW oil and gas complex KW closed fire KW fire load KW critical fire load KW fire KW regulated by the load KW fire KW regulated by air exchange KW neutral zone height KW air consumption KW combustion products consumption KW average combustion products volume JO Problems of risk management in the technosphere AU Kuzmina, T.A. AU Kuzmin, A.A. AU Permyakov, A.A. PY 2018 IS 2018 PB Saint-Petersburg University of State Fire Service of Emercom of Russia