ISO INTERNATIONAL STANDARD 17420-6 First edition 2021-02 Respiratory protective devices Performance requirements - Part 6: Special application escape - Filtering RPD and supplied breathable gas RPD Appareilsdeprotection respiratoire-Exigencesdeperformances- Partie 6: Application particuliere d'évacuation-APR alimentés en gaz respirableetAPRfiltrants Reference number ISO 17420-6:2021(E) ISO @ IS0 2021 Copyright International Organization for Standardization IS017420-6:2021(E) COPYRIGHTPROTECTEDDOCUMENT 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 0111 Email: [email protected] Website:www.iso.org Published in Switzerland Copyright hmalbganderdzan @ IS0 2021 - All rights reserved IS017420-6:2021(E) Contents Page Foreword iv Introduction. 1 Scope. .1 2 Normative references .1 3 Terms, definitions and abbreviations 2 3.1 Terms and definitions 2 3.2 Abbreviated terms .3 4 Classification overview. 4.1 3 General 4.2 Supplied breathable gas RPD for escape 3 4.3 Filtering RPD for escape 4 5 General requirements for RPD Basic requirements for supplied breathable gas RPD and filtering RPD 6 7 Special application for supplied breathable gas escape RPD and filtering escape RPD 4 7.1 Special application escape RPD- Requirement matrices. 7.1.1 General 4 7.1.2 Suppliedbreathablegas RPD-Escape 4 7.1.3 Filtering escape RPD. 6 7.2 Requirements for special application escape RPD 8 7.2.1 Exposure to dust. 8 7.2.2 Contactwithhotor cold surfacesgeneratedbytheRPD 7.2.3 Avoidance of frictional sparks - Filtering escape RPD and supplied breathable gas escape RPD 9 7.2.4 Resistancetoflame .9 7.2.5 Mechanical Requirement 10 7.2.6 Requirements for escape RPD used in explosive atmospheres and electromagneticcompatibility. .10 7.2.7 Antistatic properties -Filtering escape RPD and supplied breathable gas escapeRPD .11 7.2.8 Eyeirritation (external)-FilteringescapeRPDand suppliedbreathable gasescapeRPD 11 7.2.9 Determination of duration. 12 7.2.10 ValidationofescapeRPDperformancerequirements 14 7.3 Pre-conditioning... 28 7.3.1 Exposuretoimpactfromdrop-FilteringescapeRPDandsupplied breathable gas escape RPD. 28 7.3.2 Resistancetochanges inatmosphericpressure 28 7.3.3 Intermittent exposureto salt spray.. 28 7.3.4 Exposure to vibration and shock for supplied breathable gas escape RPD 29 7.3.5 Exposuretovibrationand shock-marine 29 Exposure to vibration and shock - mining 30 7.3.6 7.3.7 Filtering escape RPD. 31 8 Inspection .31 .31 8.1 General. 8.2 Inspection 31 8.3 Testing of leak tightness using positive pressure .32 9 Marking .32 10 Information supplied bytheRPDmanufacturer 32 ii