核电厂电缆隧道灭火系统的选型分析

Type Selection and Analysis of Fire Extinguishing System for Cable Tunnel in Nuclear Power Plant

介绍了国内核电厂消防设计相关标准对电缆隧道内灭火系统选型要求存在的异同,以及水喷雾与自动喷水灭火系统两者之间基本设计参数的差别。从分析中外电缆隧道灭火规范的发展历程及主要差异入手,提出采用快速响应洒水喷头,并结合当前市场上阻燃材料在电缆绝缘和外护套的普遍应用,给出综合性优劣的排序,供设计和建设方选择采用。

The paper introduces the differences in the requirements of relevant design codes for both domestic and foreign NPPs on the type selection of cable tunnel fire extinguishing systems,and the differences in designs parameters between water spray and automatic water sprinkler systems.It also analyzes the development history of domestic and foreign cable tunnel firefighting codes and main differences between them,proposes the use of fast-response water sprinkler,and based on the widespread applications of fire retardant materials in cable insulation and outer sheaths in current market,presents a comprehensive ranking order of advantages and disadvantages,providing reference for design and construction organizations in selection decision making.