ISO INTERNATIONAL STANDARD 11612 Third edition 2015-07-01 Protective clothing Clothing to protect against heat and flame Minimum performance requirements Vetements de protection - vetements de protection contre la chaleur et les flammes-Exigences de performance minimales Reference number ISO 11612:2015(E) SO International Organization for Standardization @ IS0 2015 andardization 5956617 vided by IHS under itted without license from IHS IS0 11612:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2015, 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 Intenatinair PrganizationforStandardization Not for Resale, 2015/10/22 07:44:00 etworking permitted without license from IHS IS0 11612:2015(E) Contents Page Foreword ..V Introduction. ..vii 1 Scope. 2 Normative references 3 Terms and definitions ..2 4 General and design requirements ..4 4.1 General .4 4.2 Size designation and fit. .5 4.2.1 General. ..5 4.2.2 Protective clothing .5 4.2.3 Additional protective garments .5 4.3 Pockets and closures. .5 4.4 Hardware .5 4.5 Additional design requirements for molten splash protective garments .6 5 Sampling and pre-treatment. .6 5.1 Sampling. .6 5.2 Pre-treatment. .6 5.2.1 Pre-treatment by cleaning .6 5.2.2 Mechanical pre-treatment .7 5.3 Ageing. 5.4 Conditioning 7 6 General performance requirements .7 6.1 General 7 6.2 Heat resistance. ·7 6.2.1 Heat resistance at a temperature of (180 ± 5) °C 6.2.2 Optional requirement Heat resistance at a temperature of (260 ± 5) °C .8 6.3 Limited flame spread .8 6.3.1 General ..8 6.3.2 Testing in accordance with IS0 15025, Procedure A (code letter A1) ..8 6.3.3 Testing in accordance with IS0 15025, Procedure B (code letter A2) .9 6.4 Dimensional change of textile materials .10 6.5 Physical requirements .10 6.5.1 Tensile strength .10 6.5.2 Tear strength .10 6.5.3 Burst strength for knitted materials and seams .10 6.5.4 Seamstrength .10 6.6 Fatcontentofleather ..10 7 Heat transmission performance requirements .11 7.1 General, .11 7.2 Convective heat (code letter B) .11 7.3 Radiant heat (code letter C) .11 7.4 Molten aluminium splash (code letter D) .11 7.5 Molten iron splash (code letter E) .12 7.6 Contact heat (code letter F) .12 8 Summary of flame and heat transmission tests and corresponding letter codes (see Table 8). .13 9 Optional test - Whole garment test against fire exposure on thermal manikin ..13 10 Marking ..13 11 Information supplied by the manufacturer .14 iii thout license from IHS Not for Resale, 2015/10/22 07:44:00