ISO 13571:2007 火灾威胁生命的要素 用火灾数据对可利用来逃生的时间的评估指南

标准编号：ISO 13571:2007

中文名称：火灾威胁生命的要素 用火灾数据对可利用来逃生的时间的评估指南

英文名称：Life-threatening components of fire — Guidelines for the estimation of time available for escape using fire data

发布日期：2007-06

标准范围

This International Standard is only one of many tools available for use in fire safety engineering. It is intendedto be used in conjunction with models for analysis of the initiation and development of fire, fire spread, smokeformation and movement, chemical species generation, transport and decay and people movement, as well asfire detection and suppression. This International Standard is to be used only within this context.This International Standard is intended to address the consequences of human exposure to the life threatcomponents of fire as occupants move through an enclosed structure. The time-dependent concentrations offire effluents and the thermal environment of a fire are determined by the rate of fire growth, the yields of thevarious fire gases produced from the involved fuels, the decay characteristics of those fire gases and theventilation pattern within the structure (see Clause A.1). Once these are determined, the methodologypresented in this International Standard can be used for the estimation of the available escape time.This International Standard provides guidance on establishing the procedures to evaluate the life threatcomponents of fire hazard analysis in terms of the status of exposed human subjects at discrete time intervals.It makes possible the determination of a tenability endpoint, at which time it is estimated that occupants are nolonger able to take effective action to accomplish their own escape (see Clause A.2). The life threatcomponents addressed include fire-effluent toxicity, heat and visual obscuration due to smoke. Two methodsare presented for assessment of fire-effluent toxicity: the toxic-gas model and the mass-loss model.Aspects such as the initial impact of visual obscuration due to smoke on factors affecting the time required foroccupants to escape, the toxic effects of aerosols and particulates and any interactions with gaseous fireeffluentcomponents and adverse health effects following exposure to fire atmospheres are not considered inthis International Standard (see the Introduction).

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