BS ISO 29903-1:2020 pdf free.Comparison of toxic gas data from different tests.
This document provides principles for characterizing the measured production of toxic gases from alaboratory fire test and provides bases for comparing the results between different types and scales ofsuch tests. It also includes consideration of the uncertainties in the gas determinations. The combineduncertainty is a key factor in the ability to establish similarity or difference of test results.
The sufficiency of the agreement between a bench-scale test and a real-scale test depends on theprecision needed in the fire hazard or risk assessment, which is not covered by this document.
This document defines the relevance and significance of toxic gas data from measurements in differentfire tests. With such a definition it is possible to provide generic guidance on how such data can becompared between different sizes and types of fire tests.
The combustion conditions represented by the fire test, other specific characteristics of the test and thetest specimen, the sampling strategy of the fire effluents, and the analysis technique for the toxic gasspecies are the most important factors when defining the significance of the toxic gas data.
This document is intended to serve as a tool for the
a) definition of the relevance and significance of toxic gas data from fire tests,
b)comparison of toxic gas data from fire tests of different scales and characteristics, andprediction of toxic gas data from a large-scale test based on small-scale data or vice versa.
This document gives general guidance regarding comparison of toxic gas data between physical firemodels of different scales, but is principally developed for the gases listed in ISo 1357i,i.e. carbondioxide (CO2), carbon monoxide (Co), hydrogen halides (HCI, HBr, HF), sulfur dioxide(So2), hydrogencyanide (HCN), nitrogen oxides (NO,NO2), formaldehyde (CH20) and acrolein(C3H40).
This document is not applicable to characterization and comparisons of the toxicity of the effluentsfrom fire tests.
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references, only the edition cited applies. Forundated references, the latest edition of the referenced document (including any amendments) applies.BS ISO 29903 pdf download.