ISO INTERNATIONAL STANDARD 21524 First edition 2021-07 Fire resistance tests Elements of building construction - Requirements for active fire curtains Referencenumber IS0 21524:2021(E) ISO ISO2021 IS0 21524:2021(E) COPYRIGHT PROTECTED DOCUMENT @ iS0 2021 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 0111 Email: [email protected] Website: www.iso.org Published in Switzerland i @ IS0 2021 - All rights reserved IS0 21524:2021(E) Contents Page Foreword .V Introduction. ..vi 1 Scope. ..1 2 Normative references. ..1 3 Terms and definitions .2 4 Symbols .4 5 Requirements .5 5.1 General. .5 5.2 Side retention. .6 5.3 Additional requirements for multiple active fire curtains .7 5.3.1 Multiple active fire curtains 7 5.3.2 Required overlap . 9 5.3.3 Larger than tested. 9 5.4 Horizontal or angled. 9 5.5 Pass door(s) .11 5.6 Vision panels .12 6 Sampling. ..13 6.1 Test samples, testing and conformance criteria. .13 7 Test methods. ..14 7.1 General. .14 7.2 Durability and force gauge. .15 7.3 Reliability and durability 15 7.4 Deployment. 15 7.4.1 Response time and velocity. 15 7.4.2 Delayed and/or multi-positional deployment 16 7.4.3 Emergency egress control 7.4.4 Emergency access control. 16 7.5 Smoke leakage. 16 7.5.1 General. 16 7.5.2 Total smoke leakage of active fire curtains with smoke-resistance. .16 7.6 Fire resistance 16 7.6.1 General. 16 7.6.2 Integrity. 17 7.6.3 Insulation 17 7.6.4 Radiation (heat flux) 17 7.6.5 Deflection zone. 18 7.6.6 Initial deployment 18 7.6.7 Operation following initial deployment - emergency egress 18 7.6.8 Operation following initial deployment emergency access. 18 7.6.9 Delayed and/or multi-positional deployment 18 7.7 Reaction to fire .18 7.8 Ancillary devices. 19 7.8.1 General. 19 7.8.2 Ancillary devices activation.. 19 7.8.3 Hold-open devices 19 7.8.4 Fire detection and alarm systems. 19 7.8.5 Sensory equipment for obstruction warning 19 7.8.6 Pressure-sensitive protective equipment (PsPE) 19 7.8.7 Self-test facility for dwellings 19 8 Marking, labelling and packaging .20 Annex A (normative) General requirements for testing .21 @ IS0 2021 - All rights reserved ii IS0 21524:2021(E) Annex B (normative) Order of testing. .24 Annex C (normative) Fire-resistance test method ..26 Annex D (normative) Overlapping multiple active fire curtains .41 Annex E (normative) Test method for active fire curtains reliability and response time and the durability of materials. .43 Annex F (normative) Test method for reliability of motor operation at elevated temperatures....46 Annex G (normative) Calculation of ambient temperature smoke leakage ..52 Annex H (normative) Test method for the durability and reliability of alternative or additional motors. .55 Annex I (normative) Test method for ancillary and optional equipment .58 Annex J (normative) Test method for durability and force gauge ..62 Annex K (informative) Typical product performance summary ..65 Annex L (normative) System design ..67 Annex M (informative) Installation ..79 Annex N (informative) Commissioning ..83 Annex O (informative) Inspection, testing and maintenance ..86 Annex P (informative) Typical approving authority pre-installation checklist. ..88 Annex Q (informative) An engineered approach to using radiative heat flux for tenable conditions for single-level horizontal routes ..89 Annex R (informative) Yarns and fabric materials ..99 Annex S (informative) Typical installation checklist. .100 Annex T (informative) Model installation certificate .103 Annex U (informative)