ISO INTERNATIONAL STANDARD 17420-5 First edition 2021-06 Respiratory protective devices Performance requirements - Part 5: Special application fire and rescue services - Supplied breathable gas RPD and filtering RPD Appareils de protection respiratoire - Exigences de performances Partie 5: Applications particulieres pour lutte contre les feux et operations de sauvetage - APR alimentés en gaz respirable et APR filtrants Reference number ISO 17420-5:2021(E) ISO @ ISO 2021 IS0 17420-5:2021(E) COPYRIGHTPROTECTED DOCUMENT IS02021 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 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2021 - All rights reserved