BS ISO 29903-1:2020 - Comparison of toxic gas data from different tests. Guidance and requirements

BS ISO 29903-1:2020

Comparison of toxic gas data from different tests. Guidance and requirements

Status : Current   Published : February 2020



This document provides principles for characterizing the measured production of toxic gases from a laboratory fire test and provides bases for comparing the results between different types and scales of such tests. It also includes consideration of the uncertainties in the gas determinations. The combined uncertainty 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 the precision 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 different fire tests. With such a definition it is possible to provide generic guidance on how such data can be compared between different sizes and types of fire tests.

The combustion conditions represented by the fire test, other specific characteristics of the test and the test specimen, the sampling strategy of the fire effluents, and the analysis technique for the toxic gas species 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

  1. definition of the relevance and significance of toxic gas data from fire tests,

  2. comparison of toxic gas data from fire tests of different scales and characteristics, and

  3. prediction 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 fire models of different scales, but is principally developed for the gases listed in ISO 13571, i.e. carbon dioxide (CO2), carbon monoxide (CO), hydrogen halides (HCl, HBr, HF), sulfur dioxide (SO2), hydrogen cyanide (HCN), nitrogen oxides (NO, NO2), formaldehyde (CH2O) and acrolein (C3H4O).

This document is not applicable to characterization and comparisons of the toxicity of the effluents from fire tests.

Standard NumberBS ISO 29903-1:2020
TitleComparison of toxic gas data from different tests. Guidance and requirements
Publication Date14 February 2020
Normative References(Required to achieve compliance to this standard)ISO 13344, ISO 19703, ISO 13943, ISO 16730-1, ISO 13571, ISO 16312-1, ISO 5725-1, ISO 19706
Informative References(Provided for Information)ISO/TS 19700:2016, IEC 60695-7-50, ISO/IEC Guide 98-3:2008, EN 13823:2010+A1:2014, ISO 24473, ISO/TR 9705-2:2001, EN 17084:2019, NF X 70-100-2, ISO/TS 17431:2006, DIN 53436-1:2015, ISO/TR 16312-2:2007, ISO 19701:2013, ISO 12136:2011, ISO 13784-1:2014, ISO 21367:2007, ISO 5659-2:2017, ISO 5660-1:2015, ISO 19702:2015, ISO 9705-1:2016, ISO 12828-1:2011
International RelationshipsISO 29903-1:2020
Draft Superseded By19/30382856 DC
DescriptorsGas mixtures, Toxic gases, Toxic materials, Gases, Gas technology
Title in FrenchRecommandations pour la comparaison de données de gaz toxiques provenant de différents essais Lignes directrices et exigences
ISBN978 0 539 02259 9
File Size1.634 MB

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