Guide for Building and Classing Subsea Pipeline Systems
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Guide for Building and Classing Subsea Pipeline Systems GUIDE FOR BUILDING AND CLASSING SUBSEA PIPELINE SYSTEMS MAY 2006 (Updated March 2018 – see next page) American Bureau of Shipping Incorporated by Act of Legislature of the State of New York 1862 2006 American Bureau of Shipping. All rights reserved. ABS Plaza 16855 Northchase Drive Houston, TX 77060 USA Updates March 2018 consolidation includes: February 2014 version plus Corrigenda/Editorials February 2014 consolidation includes: March 2008 version plus Corrigenda/Editorials March 2008 consolidation includes: November 2007 version plus Notice No. 2, Corrigenda/Editorials November 2007 consolidation includes: May 2007 version plus Notice No. 1 Foreword Foreword Foreword This Guide applies to classification of design, construction and installation of offshore pipelines made of metallic materials, as well as the periodic surveys required for maintenance of classification. Serviceability of pipelines is also addressed, but only to the extent that proper functioning of the pipe and its components affects safety. This Guide may also be used for certification or verification of design, construction and installation of pipelines. ABS will certify or verify design, construction and installation of offshore pipelines when requested by the Owner or mandated by government regulations to verify compliance with this Guide, a set of specific requirements, national standards or other applicable industry standards. If ABS certification or verification is in accordance with this Guide and covers design, construction and installation, then the pipeline is also eligible for ABS classification. This Guide has been written for worldwide application, and as such, the satisfaction of individual requirements may require comprehensive data, analyses and plans to demonstrate adequacy. This especially applies for pipelines located in frontier areas, such as those characterized by relatively great water depth or areas with little or no previous operating experience. Conversely, many provisions of this Guide often can be satisfied merely on a comparative basis of local conditions or past successful practices. ABS acknowledges that a wide latitude exists as to the extent and type of documentation which is required for submission to satisfy this Guide. It is not the intention of this Guide to impose requirements or practices in addition to those that have previously proven satisfactory in similar situations. Where available, design requirements in this Guide have been posed in terms of existing methodologies and their attendant safety factors, load factors or permissible stresses that are deemed to provide an adequate level of safety. Primarily, ABS’s use of such methods and limits in this Guide reflects what is considered to be the current state of practice in offshore pipeline design. At the same time, it is acknowledged that methods of design, construction and installation are constantly evolving. In recognition of these facts, the Guide specifically allows for such innovations and the Appendices are intended to reflect this. The application of this Guide by ABS will not seek to inhibit the use of any technological approach that can be shown to produce an acceptable level of safety. This ABS Guide is effective 1 May 2006 and supersedes the edition published in May 2005. Changes to Conditions of Classification (1 January 2008) For the 2008 edition, Chapter 1, “Scope and Conditions of Classification” was consolidated into a generic booklet, entitled Rules for Conditions of Classification – Offshore Units and Structures (Part 1) for all units, installations, vessels or systems in offshore service. The purpose of this consolidation was to emphasize the common applicability of the classification requirements in “Chapter 1” to ABS-classed offshore units, pipelines, risers, and other offshore structures, and thereby make “Conditions of Classification” more readily a common Rule of the various ABS Rules and Guides, as appropriate. Thus, Chapter 1 of this Guide specifies only the unique requirements applicable to subsea pipeline systems. These supplemental requirements are always to be used with the aforementioned Rules for Conditions of Classification – Offshore Units and Structures (Part 1). ABS GUIDE FOR BUILDING AND CLASSING SUBSEA PIPELINE SYSTEMS . 2006 iii Table of Contents GUIDE FOR BUILDING AND CLASSING SUBSEA PIPELINE SYSTEMS CONTENTS CHAPTER 1 Scope and Conditions of Classification (Supplement to the ABS Rules for Conditions of Classification – Offshore Units and Structures) .............................................................................................. 1 Section 1 Applicability ............................................................................ 3 Section 2 Classification Symbols and Notations .................................... 4 Section 3 Rules for Classification .......................................................... 5 Section 4 Documents to be Submitted .................................................. 6 Section 5 Survey, Inspection and Testing ........................................... 11 Section 6 Definitions ............................................................................ 17 [See also separately published booklet ABS Rules for Conditions of Classification – Offshore Units and Structures (Part 1)] CHAPTER 2 Materials and Welding .......................................................................... 19 Section 1 Metallic Pipe ......................................................................... 21 Section 2 Piping Components and Pipe Coating ................................. 24 Section 3 Welding of Pipes Piping Components ................................. 28 Section 4 Corrosion Control ................................................................. 29 CHAPTER 3 Design ................................................................................................... 31 Section 1 Design Requirements and Loads ........................................ 35 Section 2 Geotechnical Conditions ...................................................... 44 Section 3 Environmental Effects .......................................................... 45 Section 4 Flow Assurance Analysis ..................................................... 51 Section 5 Strength and Stability Criteria .............................................. 53 Section 6 Pipeline Rectification and Intervention Design .................... 59 Section 7 Routing, Installation and Construction ................................. 65 Section 8 Special Considerations for Pipe-in-Pipe Design .................. 71 Section 9 Special Considerations for Pipeline Bundle Design ............ 72 CHAPTER 4 Testing, Inspection and Maintenance ................................................. 75 Section 1 Testing, Drying and Commissioning .................................... 77 Section 2 Inspection, Maintenance and Repair ................................... 83 Section 3 Extension of Use .................................................................. 86 iv ABS GUIDE FOR BUILDING AND CLASSING SUBSEA PIPELINE SYSTEMS . 2006 APPENDIX 1 Limit State Design Criteria .................................................................. 88 Section 1 Limit State Design Principles ............................................... 90 Section 2 Classes for Containment, Location, Material Quality and Safety ................................................................................... 91 Section 3 Limit State for Bursting......................................................... 94 Section 4 Limit State for Local Buckling .............................................. 95 Section 5 Limit State for Fracture of Girth Weld Crack-like Defects ................................................................................. 98 Section 6 Limit State for Fatigue ........................................................ 100 Section 7 Limit State for Ratcheting/Out-of-roundness ..................... 102 Section 8 Finite Element Analysis of Local Strength ......................... 103 APPENDIX 2 Assessment of Corrosion, Dent and Crack-like Defects ................ 105 Section 1 Corrosion Defect Assessment ........................................... 106 Section 2 Maximum Allowable Operating Pressure for Dented Pipes .................................................................................. 112 APPENDIX 3 Design Recommendations for Subsea LNG Pipelines .................... 115 APPENDIX 4 References by Organization .............................................................. 119 ABS GUIDE FOR BUILDING AND CLASSING SUBSEA PIPELINE SYSTEMS . 2006 v This Page Intentionally Left Blank Chapter 1: Scope and Conditions of Classification (Supplement to the ABS Rules for Conditions of Classification – Offshore Units and Structures) CHAPTER 1 Scope and Conditions of Classification (Supplement to the ABS Rules for Conditions of Classification – Offshore Units and Structures) CONTENTS SECTION 1 Applicability ............................................................................................ 3 1 Classification ....................................................................................... 3 SECTION 2 Classification Symbols and Notations ................................................. 4 1 Pipelines Built under Survey ............................................................... 4 3 Pipelines not Built under Survey ......................................................... 4 5 Classification Data .............................................................................