Electrical cables are one of the main fire hazards in nuclear power plants (NPPs) and in many other industrial sectors. To assess the potential damages of the cable fires, models are required to forecast the fire spread over multiple cable trays and the resulting heat release rate. A new test device, called CISCCO, was developed to conduct flame spread experiments on a preheated horizontal cable layer to support the development and validation of the models. The characteristics of the CISCCO device are first presented before the description of four series of experiments that first investigated the temperature dependence of the flame spread velocity. The series involved a cable layer composed of either a polyvinyl chloride (PVC)-based cable, named PVC cable or a halogen free flame retardant (HFFR) poly(ethylene–vinyl acetate)/polyethylene-based cable, labelled HFFR cable. Temperature measurements performed in the solid phase (cable outer sheath) and in the gas phase (above the cable layer) allowed to assess the preheated cable layer temperature and the flame spread velocity. A first attempt of flame heat flux measurements was also conducted in this work. All series highlighted a temperature dependence of the flame spread velocity according to experimental power laws. The flame spread velocities were measured higher for the PVC cable (0 to 5.5 mm/s) than for the HFFR cable (0 to 1.5 mm/s) while the related preheated cable temperatures suitable for spreading were measured lower for the former (170 to 250°C) than for the latter (280 to 370°C). Finally, one of the four test series that used the PVC cable and implemented heat release rate measurements, revealed that the cable fire growth rate is also temperature dependent according to a power law and is linearly correlated to the flame spread velocity.

电缆是核电站 (NPP) 和许多其他工业部门的主要火灾隐患之一。为了评估电缆火灾的潜在损害，需要模型来预测火灾在多个电缆桥架上的蔓延以及由此产生的热释放率。开发了一种名为 CISCCO 的新测试设备，用于在预热的水平电缆层上进行火焰蔓延实验，以支持模型的开发和验证。首先介绍了 CISCCO 装置的特性，然后描述了四个系列的实验，这些实验首先研究了火焰传播速度的温度依赖性。该系列涉及的电缆层由聚氯乙烯 (PVC) 基电缆（称为 PVC 电缆）或无卤阻燃 (HFFR) 聚（乙烯-醋酸乙烯酯）/聚乙烯基电缆（称为 HFFR 电缆）组成。在固相（电缆外护套）和气相（电缆层上方）中进行的温度测量可以评估预热的电缆层温度和火焰传播速度。这项工作还首次尝试了火焰热通量测量。根据实验幂律，所有系列都强调了火焰传播速度的温度依赖性。PVC 电缆的火焰蔓延速度（0 至 5.5 毫米/秒）高于 HFFR 电缆（0 至 1.5 毫米/秒），而前者适合蔓延的相关预热电缆温度则较低（170 至 1.5 毫米/秒）。 250°C）高于后者（280 至 370°C）。最后，使用 PVC 电缆并进行热释放速率测量的四个测试系列之一表明，根据幂律，电缆火势增长速率也与温度相关，并且与火焰蔓延速度线性相关。