ISO INTERNATIONAL STANDARD 20074 First edition 2019-07 Petroleum and natural gas industry - Pipeline transportation systems - Geological hazard risk management for onshore pipeline Industrie du petrole et du gaz naturel - Systemes de transport par conduites - Gestion des risques geologiques pour les conduites terrestres Reference number IS0 20074:2019(E) @ IS0 2019 IS0 20074:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2019 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: +4122 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland i @ IS0 2019 - All rights reserved IS0 20074:2019(E) Contents Page Foreword V Introduction .vi 1 Scope. 1 2 Normative references .2 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions. 2 3.2 Abbreviated terms. 5 4 Pipeline geohazard risk management program .5 4.1 Key principles 5 4.2 Requirements for a PGMP 5 4.3 Elements of a PGMP 6 4.3.1 General .6 4.3.2 Preliminary engineering and route selection phase 7 4.3.3 Detailed design phase. 9 4.3.4 Construction phase.. .10 4.3.5 Operation and maintenance phase 12 5 Risk identification. 13 5.1 General 13 5.2 Geohazard inventory. 17 5.3 Desktop data analysis. 17 5.4 LiDAR and remote sensing imagery analysis 18 5.5 Field investigation 18 5.5.1 Field investigation techniques 18 5.5.2 Field investigation scope 18 5.5.3 Field investigation recommendations 18 5.6 Geotechnical investigation. 19 6 Risk assessment .19 6.1 General. 19 6.2 Assessment systems and methods. 19 6.2.1 Assessment systems 19 6.2.2 Assessment methods .20 6.3 Assessment for regional pipeline geohazard susceptibility 22 6.4 Assessment for individual pipeline geohazard 22 7 Risk mitigation .23 7.1 General 23 7.2 Mitigations .23 7.2.1 Physical and procedural mitigations 23 7.2.2 Short-term and long-term mitigation measures 24 8 Techniques and methods for geohazard risk management .25 9 Data management .28 Annex A (informative) Guidelines for pipeline route selection 29 Annex B (informative) Field investigation recommendations. .31 Annex C (informative) Example of classification of geological environmental conditions by complexity level 33 Annex D (informative) Example qualitative assessment method .35 Annex E (informative) Example semi-quantitative assessment method .45 Annex F (informative) Potential methods to mitigate risk .54 @ IS0 2019 - All rights reserved iii IS0 20074:2019(E) Annex G (informative) Some key influencing factors of selected geohazards .61 Bibliography 66 iv @ IS0 2019 - All rights reserved IS0 20074:2019(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO member bodies). The work of preparing International Standards is normally carried out throughIsotechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnica committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with Iso, also take part in the work ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IE Directives, Part 1. In particular, the different approval criteria needed for the different types of IsO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC D