BS 7346-5-2005 烟和热控制系统部件.利用时间相关设计点火法的排烟和排热通风系统的功能推荐方法和计算方法.实施规程

标准号：BS 7346-5-2005
中文标准名称：烟和热控制系统部件.利用时间相关设计点火法的排烟和排热通风系统的功能推荐方法和计算方法.实施规程
英文标准名称：Components for smoke and heat control systems - Functional recommendations and calculation methods for smoke and heat exhaust ventilation systems, employing time-dependent design fires - Code of practice
标准类型：J72
发布日期：2005/3/31 12:00:00
实施日期：2005/3/31 12:00:00
中国标准分类号：J72
国际标准分类号：13.220.01;91.140.30
适用范围：This British Standard gives functional recommendations and guidance on the calculation method for smoke and heat exhaust ventilation systems (SHEVS) for time-dependent design fires. A variety of building types is addressed. For a pre-determined critical time, this British Standard can be used to determine required performance of a SHEVS needed to avoid the onset of a significant danger. Or, for a pre-determined SHEVS, this British Standard can be used to determine the time available between ignition and onset of significant danger. This British Standard uses accepted and authoritative methods to define some design parameters, e.g. the time needed for safe evacuation or attendance time of the fire-fighting services. This information can be sought from other sources when generating the overall fire-safety concept for a specific building project. Many of the detailed calculation procedures, and most of the danger criteria defining the boundary between success and failure, are the same for time-dependent design fires as for steady-state design fires, and it is essential that this British Standard be used in conjunction with BS 7346-4.