Fire protection epoxy coatings for steel structures: influence of different temperature effects

Various systems of flame retardant coatings are used to protect metal structures of platforms and rack structures of oil and gas facilities from low (in case of cryogenic liquids spill) and high temperatures (in case of possible development of hydrocarbon fire regime). The article presents the results of tests of fireproof coatings on epoxy binder after modeling of liquefied hydrocarbons spill and subsequent development of hydrocarbon fire regime. Experimental data for epoxy coatings under a standard fire regime are also presented. By solving the inverse heat conduction problem using finite element modeling it was possible to determine the thermophysical properties of the formed foam coke at the end of fire tests of metal structures with epoxy coatings. The average thickness of the epoxy coating to achieve fire protection efficiency of 120 min and the consumption of the coating for hydrocarbon fire mode compared to the consumption in the standard mode were determined. Nomograms of dependence of the time of reaching the critical temperature on the volume coefficient at standard and hydrocarbon fire modes, at different thickness of the dry layer of epoxy coating are constructed.

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