ISO INTERNATIONAL STANDARD 21457 First edition 2010-09-01 Petroleum, petrochemical and natural gas industries Materials selection and corrosion control for oil and gas production systems Industries du pétrole, de la pétrochimie et du gaz naturel Choix des materiaux et controle de la corrosion pour les systemes de production de pétrole et de gaz Reference number ISO 21457:2010(E) @ ISO 2010 ISO 21457:2010(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHTPROTECTEDDOCUMENT @ISO2010 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or IsO's memberbody in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland ii @ ISO 2010 -All rights reserved ISO 21457:2010(E) Contents Page Foreword .iv Introduction. 1 Scope 2 Normative references.. 3 Terms, definitions and abbreviated terms. 3.1 Terms and definitions ... 3.2 Abbreviated terms... 4 Design information for materials selection ... 5 Materials selection report. 6 General guidelines for corrosion evaluations and materials selection .. 6.1 6.2 Internal corrosion in oil and gas production and processing .. 6.3 Internal corrosion in injection systems .... 12 6.4 Internal corrosion in utility systems..... 12 6.5 Sand erosion.... 6.6 External corrosion. 13 6.7 Polymeric materials... 15 6.8 Glass-fibre-reinforced plastic .... 6.9 Mechanical properties and material usage limitations.. .15 Materials selection for specific applications and systems.. ..16 7.1 General 16 7.2 Oil and gas production and processing systems .. 7.3 Injection systems 7.4 Utility systems . 20 7.5 Pipelines and flowlines ... .24 8 Corrosion control. 8.1 Chemical treatment ... .25 8.2 Internal corrosion allowance..... 8.3 Selection of internal and external coatings ... 27 8.4 External splash zone protection ... 27 8.5 Cathodic protection... 8.6 Corrosionprotectionofclosedcompartments 28 8.7 Connection of dissimilar materials..... .28 8.8 Sealing materials ... .29 8.9 29 8.10 Weld overlay ..30 8.11 Preferential weld corrosion .. 30 8.12 Corrosion management ...... Annex A (informative) Design basis for hydrocarbon systems ... 31 Annex B (informative) Corrosion monitoring .. 33 34 Bibliography.... 38 @ ISO 2010 - All rights reserved ii