%0 Journal Article %T IMPROVING THE EFFICIENCY OF CENTRIFUGAL FIRE PUMPS BY SELECTING THE PREFERRED TYPE OF VACUUM SYSTEM USING HIERARCHY ANALYSIS %A Sytdykov, M.R. %A Ivakhnyuk, G.K. %A Motorygin, Y.D. %K expert evaluation, centrifugal fire pumps, vacuum systems, vacuum pumps, hierarchy analysis method, water intake %J Problems of risk management in the technosphere %D 2026 %N 2026 %P 8 %I Saint-Petersburg University of State Fire Service of Emercom of Russia