FIELD: environmental control, particularly, devices guarding water area section and preventing the spreading of oil and oil products over water surface. SUBSTANCE: device includes guard in the form of flexible inflated shell, pipeline connected compressed gas source installed on water reservoir bank and connected to flexible shell. Flexible shell is multisectional. Each section of shell has inlet valve from one end. Sections are located so that inlet valves face of the guard nearest end. Pipeline is located successively along all sections and is connected with each section through respective inlet valve. Working pressure of inlet valves are the same for all sections and equal to or less than pressure in pipeline. EFFECT: higher efficiency in installation and convenience in operation. 6 dwg
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