FPSO防火等级H120和A60表示什么意思
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Ask：FPSO防火等级H120和A60表示什么意思
A和H有什么区别？
A: Standard Fire Test; to be capable of preventing the passage of smoke and flame to the end of the one-hour standard fire test;
A-60: The average temperature of the unexposed side will not rise more than 140o C above the original temperature, nor will the temperature at any one point, including any joint, rise more than 180oC above the original temperature, within 60 ninutes.
H: Hydrocarbon Fire Test; to be capable of preventing the passage of smoke and flame after 120 minutes exposure to a hydrocarbon fire test;
H120: the average temperature on the unexposed face will not increase at any time during the test by more that 140oC above the initial temperature nor shall the temperature at any point of the face, including any joint, rise more than 180oC above the initial temperature within two hours;。