1、Verification and Validation of Subsea ConnectorsAPI TECHNICAL REPORT 17TR7FIRST EDITION, APRIL 2017Special NotesAPI publications necessarily address problems of a general nature. With respect to particular circumstances, local, state, and federal laws and regulations should be reviewed.Neither API n
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15、partment, telephone (202) 682-8000. A catalog of API publications and materials is published annually by API, 1220 L Street, NW, Washington, DC 20005.Suggested revisions are invited and should be submitted to the Standards Department, API, 1220 L Street, NW, Washington, DC 20005, standardsapi.org.ii
16、iContentsPage1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Normative References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17、 . . . . . . . . . . . . . . . . . . . . . . 13 Terms, Definitions, Abbreviated Terms, and Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.1 Terms and Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18、 . . . . . . . . . . . . . . . . . . . . . . . 23.2 Abbreviated Terms and Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64.1 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64.2 Connector Descriptions . . . . . . . . . . . . .
20、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74.3 Performance Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Verification Analysis Requireme
21、nts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85.1 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85.2 Stru
22、ctural Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85.3 Fatigue Assessment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23、. . . . . . . . . . 115.4 Fatigue Load Design Format and Fatigue Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166 Validation Testing Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
24、. . . . . . . 166.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166.2 Setup and Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
25、 . . . . . . . . . . . . . . . . . . . . . . . . . 176.3 Test Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176.4 Hold Periods. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186.5 Acceptance Criteria. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186.6 Post-test Examination. . . . . . . .
27、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196.7 Pressure Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196.8 External Load
28、Test Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197 Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29、 20Annex A (informative) Material Properties for Fatigue Assessment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Annex B (informative) Nondestructive Examination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Bibliography . .
30、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Figures1 Normal, Extreme, and Survival Structural Capacity Illustration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
31、 Connector Capacity Chart Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 Example Stress Transfer Function (STF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Table
32、s1 Criteria for Elastic Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 Proposed LRFD Load Factors for Elastic-Plastic Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 P
33、roposed Design Fatigue Factor, Df. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16vIntroductionThis technical report has been prepared to provide a validation test protocol for subsea connectors for validating the verification analysis.
34、The verification analysis methodology provides guidance to generate connector performance capacity charts. The intention is to facilitate and complement the connector selection process by ensuring that capacities are determined using common industry design criteria, and to demonstrate leak tightness
35、 and structural capacities through testing. This report is not intended to replace sound engineering judgement, nor should it limit additional scope validation tests. vi1Verification and Validation of Subsea Connectors1 ScopeThis Technical Report provides requirements and recommendations for the ver
36、ification and validation of subsea connectors. It is intended to serve as a common reference for designers, manufacturers, and users to improve the performance assessment of subsea connectors and to improve the reliability and integrity of subsea systems.This technical report is applicable to subsea
37、 connectors along the vertical centerline of subsea hardware (i.e. tree, tubing head, tree cap, tree running tool, well control package connectors, and EDP connectors), the subsea wellhead, and the completion/workover riser. The methodology provided herein may also be used in other connector designs
38、. Connectors outboard of the vertical centerline are addressed in API 17R.The scope of this Technical Report includes connectors subjected to structural and pressure loads for wellhead, tree, tubing head, tree cap, tree running tool, and EDP connectors, and is intended to define general performance
39、capacities for API 17D, API 17G, and other applications.In the development of this Technical Report, verification and validation of casing and tubing connectors and welded connectors are recognized as ongoing work. At this time, casing and tubing connectors and welded connectors are not within the s
40、cope of this document and are deferred to their applicable specifications.Differential external pressure effects are not within the scope of this documentrefer to API 17TR12.Fatigue verification through analysis is included. Fatigue testing of subsea connectors is not a mandatory requirement.2 Norma
41、tive ReferencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. API Specification 6A, Specificatio
42、n for Wellhead and Christmas Tree EquipmentAPI Specification 17D, Design and Operation of Subsea Production SystemsSubsea Wellhead and Tree EquipmentAPI Recommended Practice 17G, Recommended Practice for Completion/Workover RisersAPI Technical Report 17TR8, High-pressure High-temperature Design Guid
43、elinesASME BPVC Section VIII, Rules for Construction of Pressure Vessels Division 2Alternative RulesASME BPVC Section VIII, Rules for Construction of Pressure Vessels Division 3Alternative Rules for Construction of High Pressure VesselsBS 7608: Guide to fatigue design and assessment of steel product
44、sDNVGL-RP-C203: Fatigue design of offshore steel structures2 API TECHNICAL REPORT 17TR73 Terms, Definitions, Abbreviated Terms, and Symbols3.1 Terms and DefinitionsFor the purposes of this document, the following definitions apply.3.1.1 acceptance criteriaSpecified limits of acceptability applied to
45、 process or product characteristics.3.1.2 connectorMechanical device used to connect adjacent components to create a pressure-containing structural joint resisting applied loads and preventing leakage.3.1.3 cyclic loadsAny alternating mechanical loads (internal or external), pressures or temperature
46、s that induce cyclic stresses on the entire connector assembly or components within.3.1.4 design factor Factor used in working stress design and fatigue evaluation.3.1.5 design life Period for which subsea equipment can be used for its intended purpose with anticipated maintenance, but without subst
47、antial repair or replacement being necessary, including storage and working periods.NOTE The design life includes the entire period from start of manufacture to termination of the subsea equipment. 3.1.6 design validation (validation testing or qualification)Process of proving a design by testing to
48、 demonstrate conformity of the product to design requirements.NOTE Design validation can include one or more of the following (this is not an all-inclusive list): a) prototype tests,b) functional and/or operational tests of production products,c) tests specified by industry standards and/or regulato
49、ry requirements,d) field performance tests and reviews.3.1.7 design verification (verification analysis)Process of examining the result of design and development output (both during and after the design and development phase) to determine conformity with specified requirements.NOTE Design verification activities can include one or more of the following (this is not an all-inclusive list): a) confirming the accuracy of design results through the performance of alternative calculations,VERIFICATION AND VALIDATION OF SUBSEA CONNECTORS 3b) review of design output documents independent
