ISO INTERNATIONAL STANDARD 13623 Third edition 2017-09 Petroleum and natural gas industries Pipeline transportation systems Industries du peétrole et du gaz naturel - Systemes de transport par conduites Reference number ISO 13623:2017(E) ISO @ IS0 2017 IS0 13623:2017(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2017, 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 the requester. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax+41227490947 [email protected] www.iso.org ii @ IS0 2017 - All rights reserved IS0 13623:2017(E) Contents Page Foreword .viii Introduction .ix 1 Scope. ..1 2 Normative references ..3 3 Terms, definitions and symbols 3.1 Terms and definitions.. 3.2 Symbols. 6 4 General. 1 4.1 Health, safety and the environment. 4.2 Competence assurance 7 4.3 Compliance 7 4.4 Records 5 Pipeline system design 1 5.1 System definition 7 5.2 Categorization of fluids .8 5.3 Hydraulic analysis 5.4 8 Pressure control and overpressure protection 8 5.5 Requirements for operation and maintenance 9 5.6 Public safety and protection of the environment. 9 6 Design of pipeline and primary piping .9 6.1 Design principles. .9 6.2 Route selection. .10 6.2.1 Considerations. 10 6.2.2 Surveys - On-land pipelines .11 6.2.3 Surveys Offshore pipelines 11 6.3 Loads. 12 6.3.1 General .12 6.3.2 Functional loads .12 6.3.3 Environmental loads 13 6.3.4 Construction loads 14 6.3.5 Accidental loads 14 6.3.6 Combination of loads 14 6.4 Strength requirements .15 6.4.1 Calculation of stresses. .15 6.4.2 Strength criteria .16 6.5 Stability 19 6.6 Pipeline spanning 20 6.7 Pressure test requirements 20 6.7.1 General 20 6.7.2 Test medium 20 6.7.3 Pressure ieveis and test durations 21 6.7.4 Acceptance criteria 21 6.8 Other activities. 21 6.8.1 Activities by others .21 6.8.2 Pipeline cover 22 6.9 Crossings and encroachments. 23 6.9.1 Consultationswithauthorities 23 6.9.2 Roads. 23 6.9.3 Railways 23 6.9.4 Waterways and landfalls 23 6.9.5 Pipeline/cable crossings .23 6.9.6 Pipeline bridge crossings 24 @ IS0 2017 - All rights reserved iii IS0 13623:2017(E) 6.9.7 Sleeved or cased crossings. 24 6.10 Adverse ground and seabed conditions 24 6.11 Section isolation valves. 24 6.12 Integrity monitoring. 24 6.13 Design for pigging. 24 6.14 Fabricated components 25 6.14.1 Welded branch connections 25 6.14.2 Special components fabricated by welding 25 6.14.3 Extruded outlets. 25 6.14.4 Pig traps. .26 6.14.5 Slug catchers 26 6.14.6 Fabricatedassemblies 26 6.15 Attachment of supports or anchors 26 6.16 Offshore risers.. 27 Design of stations and terminals 28 7.1 Selection of location 28 7.2 Layout. 28 7.3 Security. 28 7.4 Safety 29 7.5 Environment. 29 7.6 Buildings. 29 7.7 Equipment. .29 7.8 Piping 29 7.8.1 Primary piping 29 7.8.2 Secondary piping .30 7.9 Emergency shutdown system .30 7.10 Electrical .30 7.11 Storage and working tankage .31 7.12 Heating and cooling stations .31 7.13 Metering and pressure control stations. .31 7.14 Monitoring and communication systems. .31 7.15 Compressor stations for on-land gas supply systems. .31 8 Materials and coatings 32 8.1 General material requirements for pipelines and primary piping .32 8.1.1 Selection. .32 8.1.2 Materials for sour service .32 8.1.3 Consistency of requirements. .32 8.1.4 Chemical composition. .32 8.1.5 Brittle fracture toughness .33 8.1.6 Shear-fracture toughness .33 8.1.7 Higher-temperature service. .33 8.1.8 Properties after forming and heat treatment .33 8.1.9 Production qualification programmes. .34 8.1.10 Marking. .34 8.1.11 Inspection documents. 34 8.1.12 Specifications... .34 8.1.13 Reuse of components. 34 8.1.14 Records. .34 8.2 Line pipe 35 8.2.1 Carbon steel pipe .35 8.2.2 Stainless steel and non-ferrous metallic pipe .35 8.2.