ISO/TS 23657:2022
(Main)Reaction to fire test for sandwich panel building systems — Intermediate-scale box test
Reaction to fire test for sandwich panel building systems — Intermediate-scale box test
This document specifies a method of testing the reaction-to-fire properties of an intermediate-scale, box-shaped structure made up of sandwich panels. This test method is a screening method intended for use by producers to reduce the burden of testing in ISO 13784-1, especially with respect to the occurrence of flashover. This test method is not applicable to determining self-standing capability during fire, which is instead examined using ISO 13784-1 or ISO 13784-2. This method is not intended to evaluate the reaction-to-fire performance of facades, or the fire resistance of a product, which can be tested by other means.
Titre manque
General Information
Standards Content (Sample)
TECHNICAL ISO/TS
SPECIFICATION 23657
First edition
2022-12
Reaction to fire test for sandwich
panel building systems —
Intermediate-scale box test
Reference number
ISO/TS 23657:2022(E)
© ISO 2022
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ISO/TS 23657:2022(E)
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ISO/TS 23657:2022(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Types of systems. 2
5.1 General . 2
5.2 Type A: frame-supported structures . 2
5.3 Type B: free-standing structures . 2
6 Test specimen . 2
7 Test method . 2
7.1 Constructing the test specimen (box-shaped) . 2
7.2 Constructing the enclosure around the test specimen . 5
7.2.1 General . 5
7.2.2 The walls and ceiling of the enclosure . 5
7.2.3 The floor of the enclosure . 5
8 Ignition source .7
8.1 Structure . 7
8.2 Position . 7
8.3 Burner power output . 7
9 Instrumentation . 7
9.1 Thermocouples . 7
9.2 Additional equipment . 9
9.2.1 Data recorder. 9
9.2.2 Timing device . 9
9.2.3 Heat and smoke release measurement . 9
10 Test procedure .9
10.1 Initial conditions . 9
10.2 Test . 9
11 Precision .10
12 Test report .10
Annex A (informative) Examples of specimen drawings .12
Bibliography .14
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ISO/TS 23657:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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ISO collaborates closely 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 documents 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).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
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www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 92, Fire safety, Subcommittee SC 1, Fire
initiation and growth.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
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ISO/TS 23657:2022(E)
Introduction
This document is intended to provide a test method for describing the fire behaviour of a sandwich
panel product under fire conditions by simulating such fire conditions in a box made of sandwich panels
under controlled laboratory conditions.
This test method may be used for comparing the reaction-to-fire properties of sandwich panel products.
ISO 13784-1 and ISO 13784-2 are used to give a more realistic end-use assessment of the performance
of sandwich panels, including self-standing capability during fire.
Examples of specimen drawings are provided in Annex A.
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TECHNICAL SPECIFICATION ISO/TS 23657:2022(E)
Reaction to fire test for sandwich panel building systems —
Intermediate-scale box test
1 Scope
This document specifies a method of testing the reaction-to-fire properties of an intermediate-scale,
box-shaped structure made up of sandwich panels. This test method is a screening method intended
for use by producers to reduce the burden of testing in ISO 13784-1, especially with respect to the
occurrence of flashover.
This test method is not applicable to determining self-standing capability during fire, which is instead
examined using ISO 13784-1 or ISO 13784-2.
This method is not intended to evaluate the reaction-to-fire performance of facades, or the fire
resistance of a product, which can be tested by other means.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 13943, Fire safety — Vocabulary
ISO 13784-1, Reaction to fire test for sandwich panel building systems — Part 1: Small room test
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 13943 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Principle
The reaction to fire performance of a sandwich panel assembly is assessed when exposed to flames
impinging directly on the internal corner of a small box-shaped sandwich panel assembly. The different
kinds of flame spread, for example within the internal core, on the surface or through joints, and through
ignited combustible gases and falling debris or melting droplets of the sandwich panel assembly, are
assessed to allow the following possible fire hazards to be determined:
a) the contribution of the system to fire development before and a
...
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