ISO INTERNATIONAL STANDARD 12992 Second edition 2017-03 Plastics Vertical flame spread determination for film and sheet Plastiques - Détermination de la propagation verticale de la flamme surfilmsetfeuilles Reference number IS0 12992:2017(E) so @IS02017 IS0 12992:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017,Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. IsOcopyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org ii @ IS0 2017 - All rights reserved IS0 12992:2017(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references ..1 3 Terms and definitions 4 Significance of the test ..2 5 Principle. .3 6 Apparatus. .3 6.1 Laboratory fume hood .3 6.2 Conditioning room or chamber .3 6.3 Specimen holder. .3 6.4 Markerrods .7 6.5 Gas burner. 6.6 Fuel gas.. .7 6.7 Manometer and gas flow meter 7 6.8 Timing device. .7 6.9 Measuring scale 7 6.10 Marker (permanent) .8 6.11 Micrometer ..8 7 Test specimens. ..8 7.1 Extended application .8 7.2 Preparation of test specimens 8 Procedure ..9 9 Calculation and expression of results .11 10 Test report. .11 Annex A (informative) Precision data ..12 Bibliography ..13 @ IS0 2017 - All rights reserved iii