TY JOUR TI FEATURES OF THE DESIGN AND OPERATION OF PUMPING UNITS OF FIRE TRUCKS IN MODERN CONDITIONS KW fire pump KW pump unit KW fire truck KW technical solution KW analysis KW automation KW composite material JO Problems of risk management in the technosphere AU Presnov, A.I. AU Marchenko, M.A. AU Krutolapov, A.S. PY 2026 IS 2026 PB Saint-Petersburg University of State Fire Service of Emercom of Russia