1、 Guide for Building and Classing Subsea riser Systems GUIDE FOR BUILDING AND CLASSING SUBSEA RISER SYSTEMS JANUARY 2017 American Bureau of Shipping Incorporated by Act of Legislature of the State of New York 1862 2016 American Bureau of Shipping. All rights reserved. ABS Plaza 16855 Northchase Drive
2、 Houston, TX 77060 USA Foreword This Guide applies to classification of design, construction and installation of subsea production, injection and/or export risers for offshore applications, as well as the periodic surveys required for maintenance of classification. Serviceability of risers is also a
3、ddressed, 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 or installation of subsea production, injection and/or export risers. ABS will certify or verify design, const
4、ruction and installation of subsea production, injection and/or export risers when requested by the Operator/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 certificati
5、on or verification is in accordance with this Guide and covers design, construction and installation, then the riser 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
6、, analyses and plans to demonstrate adequacy. This especially applies for risers 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
7、 a comparative basis of local conditions or past successful practices. ABS acknowledges the wide latitude that 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 additi
8、on 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 s
9、afety. Primarily, ABSs use of such methods and limits in this Guide reflects what is considered to be the current state of practice in subsea riser design. At the same time, it is acknowledged that new materials and methods of design, construction and installation are constantly evolving. The applic
10、ation of this Guide by ABS in no way not seeks to inhibit the use of any technological approach that can be shown to produce an acceptable level of safety. This Guide becomes effective on the first day of the month of publication. This Guide is a complete re-write of the previous Guide published in
11、May 2006. Users are advised to check periodically on the ABS website www.eagle.org to verify that this version of this Guide is the most current. We welcome your feedback. Comments or suggestions can be sent electronically by email to rsdeagle.org. Cross Referencing Convention In this document, cros
12、s references are given in the following format: Example: 1-3/5.6.1ii) signifying Chapter 1-Section 3/Subsection 5.Paragraph 6.Subparagraph 1 (item ii) ii ABSGUIDE FOR BUILDING AND CLASSING SUBSEA RISER SYSTEMS .2017 Table of Contents GUIDE FOR BUILDING AND CLASSING SUBSEA RISER SYSTEMS CONTENTS CHAP
13、TER 1 Scope and Conditiions of Classification 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 and Abbreviations 16 CHAPTER 2 Com
14、mon Criteria 19 Section 1 Design Requirements and Loads 23 Section 2 Environmental Effects 32 Section 3 Strength and Stability Acceptance Criteria 38 Section 4 Installation, Construction and Testing 43 Section 5 Global Response Analysis and Riser Components Design 47 Section 6 Materials and Welding
15、. 49 Section 7 Materials for Riser Components and Pipe Coating . 53 Section 8 Flow Assurance . 56 Section 9 Corrosion Control . 59 Section 10 Inspection, Maintenance and Repair . 61 Section 11 Extension of Use 65 CHAPTER 3 Special Riser Types . 68 Section 1 Steel Catenary Risers 70 Section 2 Top Ten
16、sioned Risers 76 Section 3 Flexible Risers . 78 Section 4 Hybrid Riser Systems 86 APPENDIX 1 Composite Risers . 96 Section 1 General 98 Section 2 Design 101 Section 3 Qualification Testing 106 Section 4 Manufacturing, Installation, and Testing 111 ABSGUIDE FOR BUILDING AND CLASSING SUBSEA RISER SYST
17、EMS .2017 iii APPENDIX 2 Global Analysis Guidance . 115 Section 1 Global Response Analysis . 116 APPENDIX 3 References by Organization 121 iv ABSGUIDE FOR BUILDING AND CLASSING SUBSEA RISER SYSTEMS .2017 Chapter 1: Scope and Conditions of Classification CHAPTER 1 Scope and Conditions of Classificati
18、on CONTENTS SECTION 1 Applicability 3 1 General . 3 3 Scope 3 5 Classification . 3 7 Minimum Design Service Life . 3 SECTION 2 Classification Symbols and Notations . 4 1 Risers Built Under Survey . 4 3 Risers Not Built Under Survey 4 5 Classification Data 4 SECTION 3 Rules for Classification . 5 1 A
19、pplication 5 SECTION 4 Documents to be Submitted 6 1 General . 6 3 Plans and Specifications . 6 5 Site-specific Conditions . 6 7 Material Specifications 7 9 Design Data and Calculations 7 9.1 Flow Assurance Analysis Report . 7 9.3 Installation Analysis Report . 8 9.5 In-place Static and Dynamic Stre
20、ngth Analysis Report . 8 9.7 Fatigue Analysis Report 8 9.9 Riser Interference Analysis Report 8 9.11 Safety Devices 8 11 Installation Manual 9 13 Pressure Test Report 9 15 Operations Manual 9 17 Maintenance Manual . 10 19 Inspection Records . 10 ABSGUIDE FOR BUILDING AND CLASSING SUBSEA RISER SYSTEM
21、S .2017 1 SECTION 5 Survey, Inspection and Testing 11 1 General . 11 1.1 Scope 11 1.3 Quality Control and Assurance Program . 11 1.5 Access and Notification . 12 1.7 Identification of Materials . 12 3 Inspection and Testing in Fabrication Phase 12 3.1 Material Quality 12 3.3 Manufacturing Procedure
22、Specification and Qualification 12 3.5 Welder Qualification and Records . 12 3.7 Pre-Welding Inspection 12 3.9 Welding Procedure Specifications and Qualifications 12 3.11 Weld Inspection . 13 3.13 Tolerances and Alignments . 13 3.15 Corrosion Control Systems 13 3.17 Nondestructive Testing 13 3.19 Fa
23、brication Records . 14 5 Inspection and Testing during Installation 14 5.1 Specifications and Drawings for Installation 14 5.3 Installation Manual . 14 5.5 Inspection and Survey During Installation 14 5.7 Final Inspection and Pressure Testing . 15 5.9 Inspection for Special Cases . 15 5.11 Notificat
24、ion . 15 7 In-service Inspection and Survey 15 9 Inspection for Extension of Use 15 SECTION 6 Definitions and Abbreviations . 16 1 Definitions . 16 1.1 Classification . 16 1.3 Contractor 16 1.5 Extension of Use 16 1.7 Maximum Allowable Operating Pressure . 16 1.9 Offshore . 16 1.11 Operator 16 1.13
25、Owner 16 1.15 Recurrence Period or Return Period 16 1.17 Riser 16 3 Abbreviations 17 2 ABSGUIDE FOR BUILDING AND CLASSING SUBSEA RISER SYSTEMS .2017 Section 1: Applicability CHAPTER 1 Scope and Conditions of Classification SECTION 1 Applicability 1 General This Guide provides criteria for the classi
26、fication of subsea risers for Floating Production Installations (FPIs). The criteria address the design, fabrication, installation and maintenance of offshore production, injection and/or export risers that are constructed primarily of metallic materials. There is also a section in Chapter 3 address
27、ing flexible risers and an appendix addressing composite risers. The continuance of classification during the service life of a riser is dependent on meeting the criteria contained herein for periodic surveys. Classification of subsea risers is optional. Upon the request of the Operator/Owner, and w
28、here permitted by the cognizant Authority, this Guide can also be used by ABS to provide certification and verification of the riser to satisfy applicable governmental requirements. 3 Scope The scope of the riser to be classed is to be clearly established in consultation with ABS. The starting and e
29、nding points or cross sections of the riser are to be logically selected and referenced to readily identified components; such as valves demarcating the risers pipes from a seafloor structure and the Floating Installation. Ancillary equipment attached to the riser that is needed to provide the inten
30、ded functioning of the riser; such as a tensioner, buoyancy tank or jumper hoses are to be included in the scope of the riser. Connections of ancillary equipment to the structure of a Floating Installation or to a seafloor structure are also to be included in the scope. However the structure of the
31、Floating Installation or seafloor structure, supporting these connections may be outside the scope of the risers classification. Drilling risers are not included in this Guide. Classification of drilling risers is to follow ABS Guide for the Classification of Drilling Systems. 5 Classification The r
32、equirements for conditions of classification are contained in the separate, generic ABS Rules for Conditions of Classification Offshore Units and Structures (Part 1). Additional requirements specific to subsea riser systems are contained in the following Sections. 7 Minimum Design Service Life The s
33、ervice life considered in the design of the riser is to be agreed by the designer/manufacturer, owner/operator and ABS. If not specified, the minimum design service life of the riser is considered as 20 years. ABSGUIDE FOR BUILDING AND CLASSING SUBSEA RISER SYSTEMS .2017 3 Section 2: Classification
34、Symbols and Notations CHAPTER 1 Scope and Conditions of Classification SECTION 2 Classification Symbols and Notations A listing of Classification Symbols and Notations available to the Operators/Owners of vessels, offshore drilling and production units and other marine structures and systems, “List
35、of ABS Notations and Symbols” is available from the ABS website “http:/www.eagle.org”. Application of this Guide is optional. However, compliance with the requirements of this Guide is compulsory when seeking the optional notations offered by this Guide. The following notations are specific to subse
36、a riser systems. 1 Risers Built Under Survey Risers which have been built, installed, tested and commissioned to the satisfaction of the ABS Surveyors to the full requirements of this Guide or to its equivalent, where approved by the Committee, will be classed and distinguished in the Record by: nul
37、l A1 Offshore Installation Offshore Risers 3 Risers Not Built Under Survey Risers which have not been built, installed, tested and commissioned under ABS survey, but which are submitted for classification, will be subjected to a special classification survey. Where found satisfactory, and thereafter
38、 approved by the Committee, they will be classed and distinguished in the Record in the manner as described in 1-2/1, but the mark null signifying survey during construction will be omitted. 5 Classification Data Data about the riser will be published in the Record (i.e., location, type, dimensions
39、and depth of water at the installation site). 4 ABSGUIDE FOR BUILDING AND CLASSING SUBSEA RISER SYSTEMS .2017 Section 3: Rules for Classification CHAPTER 1 Scope and Conditions of Classification SECTION 3 Rules for Classification 1 Application These requirements are applicable to those features that
40、 are permanent in nature and that can be verified by plan review, calculation, physical survey or other appropriate means. Any statement in this Guide regarding other features is to be considered as guidance to the designer, builder, Operator/Owner, et al. ABSGUIDE FOR BUILDING AND CLASSING SUBSEA R
41、ISER SYSTEMS .2017 5 Section 4: Documents to be Submitted CHAPTER 1 Scope and Conditions of Classification SECTION 4 Documents to be Submitted 1 General Documentation to be submitted to ABS is to include reports, calculations, drawings and other documentation necessary to demonstrate the adequacy of
42、 the design of the risers. Specifically, required documentation is to include the items listed in this Section. 3 Plans and Specifications Plans and specifications depicting or describing the arrangements and details of the major items of the riser are to be submitted for review or approval in a tim
43、ely manner. These include: Site plan indicating bathymetric features at the proposed site, the location of obstructions to be removed, the location of permanent man-made structures and other important features related to the characteristics of the sea floor Structural plans and specifications for ri
44、sers, their supports and coating Schedules of nondestructive testing and quality control procedures Flow diagram indicating temperature and pressure profiles Specifications and plans for instrumentation and control systems and safety devices When requested by the Operator/Owner, the Operator/Owner a
45、nd ABS may jointly establish a schedule for information submittal and plan approval. This schedule, to which ABS will adhere as far as reasonably possible, is to reflect the fabrication and construction schedule and the complexity of the riser systems as they affect the time required for review of t
46、he submitted data. 5 Site-specific Conditions Documents for site-specific conditions are to include environmental condition report and site investigation report. In the environmental condition report, met-ocean data for normal operating, design (extreme), and survival conditions in terms of wind, wa
47、ves, current with profile, direction, and associated return of periods are to be included. Other items such as temperature, tide, marine growth, ice conditions, earthquakes and other pertinent phenomena are also be included if applicable. In the site investigation report, geotechnical data acquisiti
48、on and integrated geoscience studies should be included to determine soil properties, soil conditions, and geotechnical hazards and constraints across the site as specified in APR RP 2GEO, if applicable. Geotechnical data acquisition is to include, logging, sampling, in situ testing, field and onsho
49、re laboratory testing, evaluation of geotechnical data, and reporting. The area for soil sampling is to be based on riser type, consideration of the expected variation between final and planned riser position as well as installation tolerance. The soil properties testing should include a suitable combination of in-situ and laboratory testing, seismic, and boring methods. The geotechnical data is to be integrated with geoscience studies (geophysics and geology). The geophysical survey is to identify seabed slopes, gullies, ledges, and the presence of any rocks or obstructio
