ISO INTERNATIONAL STANDARD 15500-2 Third edition 2016-05-01 Road vehicles Compressed natural gas (CNG) fuel system components - Part 2: Performance and general test methods Vehicules routiers Composants des systemes de combustible gaz naturel comprimé (GNC) Partie 2: Performances et méthodes d'essai générales Reference number IS0 15500-2:2016(E) ISO International Organization for Standardization @ IS0 2016 HEJIANG INST OF STANDARDIZATION C1 5956617 IS0 15500-2:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2016, Published in Switzerland All rights reserved. Unless otherwise specified, 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 copyrightoffice 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 Internatinair PrganizationforStandardization nsee-ZHEJIANG INSTOF STANDARDIZAoSQ6- All rights reserved etworking permitted without license from IHS IS0 15500-2:2016(E) Contents Page Foreword ..iv Introduction. ...vi 1 Scope. 2 Normative references ..1. 3 Terms and definitions 4 General. ..1 5 Hydrostatic strength .2 6 Leakage. .2 6.1 General .2 6.2 External leakage. .2 6.3 Internal leakage .3 6.4 Test conditions .3 7 Excess torque resistance .3 8 Bending moment. ..4 9 Continued operation .5 9.1 General .5 9.2 Test methods. .5 9.2.1 Test procedure .5 9.2.2 Room temperature cycling .6 9.2.3 High-temperature cycling .6 9.2.4 Low-temperature cycling 10 Corrosion resistance. ..6 11 Oxygen ageing. 12 Electrical over-voltages .7 13 Non-metallic material immersion 1 14 Vibration resistance. ..8 15 Brass material compatibility ..8 16 Ozone ageing for vulcanized or thermoplastic rubbers ..8 17 Resistance to dry heat for vulcanized or thermoplastic rubbers ..9 18 Automotive fluid exposure .9 18.1 .9 General 18.2 Test Method .9 18.3 Fluids. 18.4 Pass criteria .9 Bibliography .10 iii See=ZHEJIANG INSTOFSTANDARDIZATION C15956617 ed without license from IHS