Cable Heat Release, Ignition, and Spread in Tray Installations During Fire (CHRISTIFIRE). Phase 1: Horizontal Trays.

摘要

This report documents the first phase of a multi-year NRC research initiative entitled CHRISTIFIRE (Cable Heat Release, Ignition, and Spread in Tray Installations during FIRE). The overall goal of the program is to better understand and quantify the burning characteristics of grouped electrical cables commonly found in nuclear power plants. The first phase of the program focuses on horizontal tray configurations. The experiments conducted range from micro-scale, in which very small (5 mg) samples of cable materials were burned in a calorimeter to determine their heat of combustion and other properties; to full-scale, in which horizontal arrays of ladder-back trays loaded with varying amounts of cable were burned under a large oxygen-depletion calorimeter. Additional experiments include cone calorimetry, smoke and effluent characterization in a small test furnace, and intermediate-scale calorimetry involving a single tray of heated cables exposed to a bank of radiant panels. The results of the small-scale experiments will serve as input data for fire models; while the results of the full-scale experiments will serve as validation data for the models.