ISO/TR TECHNICAL REPORT 17252 Second edition 2019-05 Fire tests Applicability of reaction to fire tests to fire modelling and fire safety engineering Essais au feu - Applicabilité des résultats de I'essai de réaction au feu aux techniques de modelisation et de sécurité contre I'incendie Reference number ISO/TR 17252:2019(E) osi @ IS0 2019 IS0/TR 17252:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2019 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either IsO at the address below or Iso's member body in the country of the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2019 - All rights reserved IS0/TR 17252:2019(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions 4 Symbols and abbreviated terms. ..1 5 Fire initiation and growth .2 5.1 Specification of fires and fire scenarios. .2 5.1.1 Background. 2 5.1.2 Design fire types. 3 5.2 Sensitivity analysis in the design process .5 5.3 Limits of applicability .6 6 Sources and type of data for input into design .6 6.1 Type of data for input into design . 6.2 Complexity of the modelling approach with regard to input data 6 6.3 Using ISo/TC 92/SC 1 derived reaction-to-fire tests parameters in models for FSE .9 > Application of test results and limits of applicability. .11 7.1 Limiting factors affecting experimental quantification of fire growth 11 7.2 Repeatability and reproducibility. 11 7.3 Heat flux measurements. .11 7.4 Ignition. .12 7.5 Flame spread .12 7.6 Heat release rate 12 7.7 Smoke production rate .12 7.8 Differences between testing conditions and real fire scenarios .13 7.9 Limitations of generalizing product behaviour. ..14 Annex A (informative) Review of fire test standards. ..15 Bibliography .31 IS0 2019 - All rights reserved ii