Abstract
In this paper, heat effect of fire and ignition conditions of electrical cables were shown to evaluate the fire-safety of electrical cables in nuclear fuel processing plant. First, heat effect on cable tray by the combustion by 10L of Ethanol was evaluated numerically by Fire Dynamics Simulator (FDS). As a result, the radiant heat to cable tray at the height of 3.6m was approximately as about 2kW/m^2 by FDS. Moreover, the cone calorimeter test for eco-material (EM) cables which may be used in nuclear fuel processing plant were conducted to evaluate the ignition conditions of electrical cables. As a result, ignition of EM cables was not observed when radiant heat was lower than 15kW/m^2. From the results, the effect of the radiant heat which the combustion by 10L of ethanol gave to cable tray was lower than the radiant heat that ignite EM.
