ISO INTERNATIONAL STANDARD 19881 First edition 2018-10 Gaseous hydrogen Land vehicle fuel containers Hydrogene gazeux - Réservoirs de carburant pour vehicules terrestres Reference number ISO 19881:2018(E) Tso @IS02018 IS0 19881:2018(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2018 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 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2018 - All rights reserved IS0 19881:2018(E) Contents Page Foreword ..vi Introduction. ..vii 1 Scope. 2 Normative references 3 Terms and definitions 4 Service conditions ..5 4.1 General .5 .5 4.1.1 Standard service conditions. 4.1.2 Category .6 4.1.3 Servicelife 4.1.4 Periodic in-service inspections .6 4.2 Pressures. 4.2.1 Nominal working pressures. .6 4.2.2 Maximum pressures.. ..6 4.3 Maximum number of filling cycles .6 4.4 Temperature range.. .7 4.4.1 Settled gas temperatures .7 4.4.2 Container temperatures. .7 4.4.3 Transient gas temperatures 1 4.4.4 Test temperatures .7 4.5 Gas composition 4.6 External surfaces. 7 4.7 Installation requirements. .7 5 Compliance .8 6 Material qualification tests and requirements 6.1 General ..8 6.2 Material requirements ..8 6.3 Metal containers and metal liners .9 6.3.1 Material properties. .9 6.3.2 Impact test for steel. .9 6.3.3 Tensile tests for metals 9 6.3.4 Sustained load cracking (SLC) test for aluminum alloys .9 6.3.5 Corrosion tests for aluminum alloys. .10 6.4 Ultraviolet resistance of external coatings ..10 6.5 Fibers. .10 6.6 Resins 10 6.7 Nonmetallic liners (Type 4). .10 6.8 Bosses for Type 4 containers. .10 7 Wall thickness .11 7.1 Type 1 containers. ..11 7.2 Liners for Type 2, Type 3, and Type 4 containers ..11 7.3 Composite reinforcement for Type 2, Type 3, and Type 4 containers. ..11 7.3.1 Stress analysis. .11 7.3.2 Stress ratios ..12 7.3.3 Modified stress ratio test .12 7.3.4 Hybrid designs. ..12 7.4 External loads on containers ..12 8 Threaded openings ..12 9 Manufacture ..13 9.1 General. ..13 9.2 Metal containers and metal liners ..13 @ IS0 2018 - All rights reserved ii