ISO/TS 23782:2024

Requirements for large-scale test methods to represent fire threats to people in different fire scenarios

This document specifies requirements for the determination of methods and fire scenarios for fire threat assessment as a basis for designing and constructing large-scale fire tests. It covers different generic design requirements for large-scale fire test rigs to simulate the real fire scenarios of interest. This document addresses fire threats to people under acute exposure to fire effluents according to the evaluation of tenability conditions. It does not address any chronic effects of that exposure on susceptible populations and firefighters.

Exigences relatives aux méthodes d’essai à grande échelle pour représenter les dangers pour les personnes dus au feu dans différents scénarios d’incendie

General Information

• Status: Published
• Publication Date: 16-Jul-2024
• ICS: 13.220.01 - Protection against fire in general
• Technical Committee: ISO/TC 92/SC 3 - Fire threat to people and environment
• Drafting Committee: ISO/TC 92/SC 3/WG 1 - Fire model
• Current Stage: 6060 - International Standard published
• Start Date: 17-Jul-2024
• Due Date: 08-Mar-2024
• Completion Date: 17-Jul-2024

Standards Content (Sample)

Technical
Specification
ISO/TS 23782
First edition
Requirements for large-scale test
2024-07
methods to represent fire threats to
people in different fire scenarios
Exigences relatives aux méthodes d'essai à grande échelle pour
représenter les dangers dus au feu pour les personnes dans
différents scénarios d'incendie
Reference number
© ISO 2024
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ii
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General principles . 2
4.1 Compromised tenability .2
4.2 Fire profile .2
5 Significance and use . 3
5.1 Application of large-scale test.3
5.2 Fire test scenario .3
5.3 Suitable test rig .4
6 Suitable test rig design . 4
6.1 General .4
6.2 Non-flaming fires in a small room .5
6.3 Small smouldering or flaming fire in a small room .5
6.3.1 General .5
6.3.2 Suitable test rig .5
6.4 Small fire in a room with the door opened .5
6.4.1 General .5
6.4.2 Suitable test rig .5
6.5 Small smouldering or flaming fire in a small room with window partially opened .6
6.5.1 General .6
6.5.2 Suitable test rig .6
6.6 Small smouldering or flaming fire in a small room with large exterior vents opened .6
6.6.1 General .6
6.6.2 Suitable test rig .7
6.7 Flaming fire in a large space with a large floor and high ceiling .7
6.7.1 General (Scenario 1) .7
6.7.2 Suitable test rig — Scenario 1 .7
6.7.3 Scenario 2 .7
6.7.4 Suitable test rig — Scenario 2 .7
7 Preparation of test . 7
7.1 Occupants of interest .7
7.2 Test rig .8
7.3 Ignition source .8
7.4 Fuel .9
7.5 Instrumentation .9
7.5.1 General .9
7.5.2 Sampling and analysis of toxic fire effluents .9
8 Measurements .10
8.1 Heat .10
8.1.1 General .10
8.1.2 Convective effect .11
8.1.3 Radiant effect .11
8.2 Smoke obscuration .11
8.3 Toxic gas .11
8.4 Equivalence ratio .11
8.5 Mass loss .11
8.6 Miscellaneous .11
9 Data analysis and interpretation .12

iii
9.1 General . 12
9.2 Repeatability of test . 12
9.3 Reproducibility of test . 12
10 Reporting requirements .13
Annex A (informative) Fire classification and typical characteristics . 14
Annex B (informative) Suitable test rig with instrumentation: example designs and
configurations . 17
Bibliography . 19

iv
Foreword
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with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to imp
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