TY JOUR TI ESTIMATION OF TECHNICAL EFFICIENCY MODULES POWDER EXTINGUISHING RELATION TO OIL AND GAS FACILITIES KW module powder extinguishing KW evaluation of technical efficiency KW dimensional analysis KW dimensionless complex KW impulse JO NATURAL AND MAN-MADE RISKS (PHYSICO-MATHEMATICAL AND APPLIED ASPECTS) AU Markova, N.B. AU Sytdykov, M.R. AU Polyakov, A.S. PY 2015 IS 2015 PB Saint-Petersburg University of State Fire Service of Emercom of Russia