TY JOUR TI ESTIMATION OF THE RESPONSE TIME OF FIRE ALARM SYSTEMS IN VARIOUS MODES OF GAS EXCHANGE KW load-controlled fire KW ventilation-controlled fire KW gas exchange KW fire alarm KW video analysis KW fire detector with video channel KW carbon monoxide JO Siberian Fire and Rescue Bulletin AU Gudkov, M.A. AU Gapeev, A.A. AU Grechanyy, S.A. AU Kalkov, D.Y. AU Koval, Y.N. PY 2025 IS 2025 PB FSBEE HE Siberian Fire and Rescue Academy EMERCOM of Russia