ISO INTERNATIONAL STANDARD 9239-2 First edition 2002-12-15 Reaction to fire tests for floorings - Part 2: Determination of flame spread at a heat flux level of 25 kW/m2 Essais de réaction au feu des revetements de sol- Partie 2: Détermination de la propagation de flamme a un niveau de flux énergétique de 25 kW/m2 Reference number ISO 9239-2:2002(E) ISO @ISO2002 y IHS under lic ted without license from IHS Not for Resale ISO 9239-2:2002(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below @ISO2002 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, IsO's member body in the country of the requester. ISO copyright office Case postale 56 . CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISo 2002 - All rights reserved py IHS unde ermittedwithoutlicense from IHS Not for Resale ISO 9239-2:2002(E) Contents Page Foreword Introduction 1 Scope 2 Normative references 3 Terms and definitions 4 Apparatus.. 5 Test specimen 4 6 Conditioning .. 7 Calibration procedure 14 8 Standard test procedure 9 Expression of results. 10 Precision. 11 Test report.. AnnexA(informative)Gasandairsupplies. Annex B (informative) Precision of the test method... 19 Bibliography .... Copyrght International Organizaion for Standardization rights reserved ili nse from IHS Not for Resale ISO 9239-2:2002(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 through ISO technical committees. Each member body interested in a subject for which a technical committee has been non-governmental, in liaison with isO, also take part in the work. so collaborates closely with the InternationalElectrotechnicalCommission(iEC)onallmattersofelectrotechnicalstandardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 9239-2 was prepared by Technical Committee ISO/TC 92, Fire safety, Subcommittee SC 1, Fire initiation andgrowth. Iso 9239 consists of the following parts, under the general title Reaction to fire tests for floorings: Part 1: Determination of the burning behaviour using a radiant heat source — Part 2: Determination of flame spread at a heat flux level of 25 kW/m2 @ISO2002—Allrightsreserved onal Organization for Standardizatior ISO 9239-2:2002(E) Introduction ISO/TR 5658-1 describes the development of standard tests for flame spread and explains the theory of flame spread, including horizontal flame spread over floorings. Floorings are not readily involved in fires but if fire develops due to other contents of a building burning, then floorings may ignite and it is necessary to be able to determine whether