Methodology for assessing the risk from cable fires

Abstract

A methodology for quantifying the frequency of core melt and containment failure due to fires is developed. Critical areas are identified using as criteria the failures of control and power cables, which may lead to loss-of-coolant accidents and transients and the concurrent loss of redundant engineered safety functions. A detailed analysis of fires in a cable-spreading room, which includes models for growth and suppression, is also presented.