UDK 67.637.4:699.81
Guzii S., Kurska T., Panashchuk Ya., Lyubashenko A.
Guzii S., PhD, Senior Researcher, Department of Nuclear Physics Technologies, State Institution ‘Institute of Environmental Geochemistry’ of the National Academy of Sciences of Ukraine, ORCID: 0009-0009-4635-2806, sguziy2@gmail.com
Kurska T., PhD, Associate Professor, Department of Civil Safety and Occupational Health, Odessa Polytechnic National University, Ukraine, ORCID: 0000-0003-2569-6406, tkurskaya67@gmail.com
Panashchuk Y., Senior Engineer, Department of Nuclear and Physical Technologies, State Institution ‘Institute of Environmental Geochemistry’ of the National Academy of Sciences of Ukraine, yaro58sp@gmail.com
Lyubashenko A., Engineer I, Department of Nuclear Physics Technologies, State Institution ‘Institute of Environmental Geochemistry’ of the National Academy of Sciences of Ukraine, ORCID: 0009-0000-8816-455X, lubashenko.a@gmail.com
DOI: 10.15407/conference.geointegration.144
Pages: 144-148
REACTIVE COMPOUNDS FOR FIRE PROTECTION OF ELECTRICAL CABLES AND CABLE PASSAGES AT NUCLEAR POWER PLANTS
Abstract. The paper presents data on fire tests of a reactive coating designed for fire protection of electrical cables and cable trays at nuclear power plants. The effectiveness of fire protection by the developed coating composition, which is characterized by a linear expansion coefficient (Kl=13), mass loss (6.55%) and time (60 min) to reach the maximum temperature (500°C), has been demonstrated and ensures the fire resistance of such a structure to class R60. The fire-retardant properties of the reactive compound we ensured by the formation of a thermally stable layer of foam coke reinforced with magnesium and calcium oxides together with anhydrous and temperature-resistant calcium-magnesium phosphates. When exposed to a gas lamp flame for 60 minutes, partial damage to the polymer insulation they observed, which did not lead to failure of the cable itself or a short circuit between the conductive cores. To eliminate this drawback, it they recommended to increase the protective coating layer to 5 mm in the future.
Keywords: reactive compound, foam coke, electrical cable, fire test, linear expansion coefficient, fire resistance
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