DNVGL-RP-D101 Structural analysis of piping systems

1 The electronic pdf version of this document, available free of chargefrom , is the officially binding GL ASRECOMMENDED PRACTICEDNVGL-RP-D101 Edition July 2017 Structural analysis of piping systemsFOREWORDDNV GL recommended practices contain sound engineering practice and guidance. DNV GL AS July 2017 Any comments may be sent by e-mail to service document has been prepared based on available knowledge, technology and/or information at the time of issuance of thisdocument. The use of this document by others than DNV GL is at the user's sole risk. DNV GL does not accept any liability or responsibilityfor loss or damages resulting from any use of this document. Changes - currentRecommended practice DNVGL-RP-D101 . Edition July 2017 Page 3 Structural analysis of piping systemsDNV GL AS Topside processing piping [ ]: The approach for estimating the blast drag pressure has been to DNVGL-OS-A101 Table-1 and DNVGL-OS-A101 Figure-1 have been added.

2 Appendix J Appendix J has been CURRENTG eneralThis document supersedes the October 2008 edition of purpose of the revision of this service document is to comply with the new DNV GL document reference code system and profile requirements following the merger between DNV and GL in 2013. Changes mainly consist of updated company name and references to other documents within the DNV GL references in this service document may refer to documents in the DNV GL portfolio not yet published (planned published within 2017). In such cases please see the relevant legacy DNV or GL document. References to external documents (non-DNV GL) have not been correctionsIn addition to the above stated changes, editorial corrections may have been made. ContentsRecommended practice DNVGL-RP-D101 . Edition July 2017 Page 4 Structural analysis of piping systemsDNV GL ASCONTENTSC hanges 1 Relationship to other Abbreviations and 2 Structural analysis of piping Pipe stress and flexibility analysis piping design 3 Topside process Commonly used design Type of Loads to be considered in piping Wall thickness Flexibility Equipment nozzle load Flange Pressure relief- and discharge force Expansion and slip-joint thrust load Blast load Fatigue Non-standard component Load case description- and Pipe stress priority design of pipe Documentation of stress 4 Subsea 41 ContentsRecommended practice DNVGL-RP-D101 .

3 Edition July 2017 Page 5 Structural analysis of piping systemsDNV GL Commonly used design DNVGL-ST-F101 Submarine pipeline Recommended design Hydrogen induced stress cracking (HISC).. Documentation of pipe stress 44 Section 5 Non standard piping Requirements in piping FEA design and qualification of non-standard 46 Section 6 Self Internal Verification carried out by a 3rd 51 Appendix A Vortex induced Relevance to Important Vortex shedding In-line Cross-flow Reduced velocity, Stability parameter, Effective mass, Added mass, Limitation to added-mass Common error in pipe stress Wind induced vortex Sea current induced vortex Recommended VIV check-out Methods used to reduce Physical properties of air and ContentsRecommended practice DNVGL-RP-D101 . Edition July 2017 Page 6 Structural analysis of piping systemsDNV GL ASAppendix B Analyst check list, global C Third party check list, global D Check list, local E Restraint F Pipe stress G Load case H Subsea load case I Subsea pipe stress practice DNVGL-RP-D101 .

4 Edition July 2017 Page 7 Structural analysis of piping systemsDNV GL ASSECTION 1 IntroductionThis recommended practice is based on, and intends to, show the best from European industrial practicefor Structural analysis of piping systems intended for the offshore sector. Typical applications are oil andgas platforms, FPSOs, drilling units and subsea installations. Subsea installations are installations such astemplates, manifolds, riser-bases and subsea separation-and pump is no piping design code that fully covers these topics, and hence engineering companies havedeveloped a variety of internal design philosophies and procedures in order to meet the requirements tostructural integrity, safety, economical and functional design of piping number of references are given to below listed codes and standards from which equations for a largenumber of pipe- stress relevant calculations can be ObjectiveThe objective of this recommended practice is to describe a best practice for how Structural analysis ofpiping systems can be performed in order to safeguard life, property and the environment.

5 It should beuseful for piping Structural engineers organising and carrying out the piping design , and any 3rd partyinvolved in the design verification, such as classification societies, notified bodies etc. The proposedproject documentation should provide the operator with essential design information and be useful duringcommissioning, maintenance, future modifications, and useful in order to solve operational problems, if andwhen they Relationship to other codesThis recommended practice is strongly related to the use of a large number of international design codes,standards, directives and regulations in order to succeed with a professional ReferencesThe below listed codes, standards, recommended practices, specifications and software are considered to bethe most important ones for analysis of piping systems and piping components to be installed in an ASME codes and standardDocument codeTitleASME Flanges and Flange FittingsASME Made Wrought Steel Butt welding FittingsASME Gaskets for Pipe Flanges-Ring Joint, Spiral Wound.

6 And JacketedASME Flat Gaskets for Pipe FlangesASME Diameter Steel FlangesASME Made Wrought Steel Butt welding Induction Bends for Transportation and DistributionSystemsASME PipingASME PipingRecommended practice DNVGL-RP-D101 . Edition July 2017 Page 8 Structural analysis of piping systemsDNV GL ASDocument codeTitleASME Transportation systems for Liquid Hydrocarbons and Other LiquidsASME Transmission and Distribution piping SystemsASME and Seamless Wrought Steel PipeASME Steel PipeASME BPVC Sect. IIPart D Material PropertiesASME BPVC Sect. IIIR ules for Nuclear Facility Components, Division 1 ASME BPVC Sect. VIIIR ules for Construction of Pressure Vessels, Division 1 & API codes and standardsDocument codeTitleAPI 6 ASpecification for Wellhead and Christmas tree EquipmentAPI 6 AFCapabilities of API Flanges under Combination of LoadAPI RP 2A-WSDR ecommended Practice for Planning, Designing and Constructing Fixed Offshore Platforms -Working stress DesignAPI RP 2 FBRecommended Practice for the design of Offshore Facilities against Fire and Blast LoadingAPI RP 14 ERecommended Practice for design and Installation of Offshore Production Platform PipingSystemsAPI RP 17 ADesign and Operation of Subsea Production systems (API equivalent to ISO 13628)API RP 520 Sizing, Selection and Installation of Pressure-relieving Devices in RefineriesAPI Std.

7 610 Centrifugal Pumps for Petrochemical and Natural Gas IndustriesAPI Std. 611 General-Purpose Steam Turbines for Petroleum, Chemical and Gas Industry ServicesAPI Std. 616 Gas Turbines for Petroleum, Chemical, and Gas Industry ServicesAPI Std. 6171 Axial and Centrifugal Compressors and Expander-compressors for Petroleum, Chemical andGas Industry Other standards and bulletinsDocument codeTitleAISC ASDA merican Institute of Steel Construction, Allowable stress DesignAISC LRFDA merican Institute of Steel Construction, Load and Resistance Factor DesignEJMAThe EJMA Standards for design , installation and use of expansion bellowsNEMA SM23 Steam Turbines for Mechanical Drive ServiceWRC 107 WRC Bulletin No. 107. Local Stresses in Spherical & Cylindrical Shells due to ExternalLoadingsRecommended practice DNVGL-RP-D101 . Edition July 2017 Page 9 Structural analysis of piping systemsDNV GL ASDocument codeTitleWRC 297 WRC Bulletin Local Stresses in Cylindrical Shells Due to External Loadings onNozzles.

8 Supplement to WRC Bulletin No. 107 WRC 449 Guidelines for the design and Installation of Pump piping DNV GL offshore standardsDocument codeTitleDNVGL-ST-F101 Submarine pipeline DNV GL recommended practicesDocument codeTitleDNVGL-RP-C203 Fatigue strength analysis of offshore steel structuresDNVGL-RP-C205 Environmental conditions and environmental loadsDNVGL-RP-F112 design of duplex stainless steel subsea equipment exposed to cathodic European codes and standardsDocument codeTitleBSI BS 7159 Code of Practice for design and Construction of Glass Reinforced Plastics (GRP) pipingsystems for Individual Plants or and their joints. design rules for gasketed circular flange connections. CalculationmethodEN 1993 Euro code 3, design of Steel StructuresEN 13480 Industrial Metallic PipingEN 13445 Unfired Pressure VesselsEN-ISO-13628 design and operation of Subsea Production SystemsEN-ISO 13703 Petroleum and Natural Gas Industries- design and installation of piping systems on Offshoreproduction PlatformsEN-ISO- 14692 Petroleum and Natural Gas Industries-Glass Reinforced Plastic piping (GRP)PD 55001 Specification for Unfired Fusion Welded Pressure VesselsPEDP ressure Equipment Directive (97/23/EC) NORSOK standardsDocument codeTitleNORSOK L-001 piping and ValvesRecommended practice DNVGL-RP-D101 .

9 Edition July 2017 Page 10 Structural analysis of piping systemsDNV GL ASDocument codeTitleNORSOK L-002 piping design , layout and stress AnalysisNORSOK L-005 Compact Flanged ConnectionsNORSOK M-001 Material SelectionNORSOK M-630 Material Data Sheets for PipingNORSOK N-001 Structural DesignNORSOK R-001 Mechanical Other historical important piping KelloggDesign of piping SystemsRoark sFormulas for stress and StrainCASTIP ractical Guide to ASME for the Avoidance of Pipework FatigueCMRE xplosion Pipe stress softwareSoftwareLicenceeAuto PipeBentley systems , Exton, Pennsylvania, USACAE PipeSST systems Inc. San Jose, California, USAC aesar IIIntergraph CADWorx & analysis Solutions, Inc, Houston, Texas, USAROHR2 SIGMA Ingenieurgesellschaft mbH, Unna, GermanyTriflexPiping Solutions Inc. Houston, Texas, Definitions of verbal formsTermDefinitionshallindicated requirements strictly to be followed in order to conform to this RP and from whichno deviation is permittedshouldindicates that among several possibilities, one is recommended as particularly suitable,without mentioning or excluding others, or that a certain course of action is preferred but notnecessarily required.

10 Other possibilities may be applied subject to agreementmayverbal form used to indicate a course of action permissible within the limits of the RPRecommended practice DNVGL-RP-D101 . Edition July 2017 Page 11 Structural analysis of piping systemsDNV GL ASTermDefinitionrecommendindicates the preferred method. Other suitable alternatives may be permitted subject Abbreviations and AbbreviationsAbbreviationDescriptionAISC A merican Institute of Steel ConstructionALSaccidental limit stateASDallowable stress designASMEA merican Society of Mechanical EngineersASTMA merican Society for Testing and MaterialsAPIA merican Petroleum InstituteBPVC boiler and pressure vessel code (ASME code)CPcathodic protectionCTOD crack tip opening displacementDAFdynamic amplification factor (in the context of this RP the same as DLF)DFFdesign factor fatigueDLFdynamic load factorDFOdocumentation for operationsDNdiametre nominale (nominal outer diameter of a pipe [mm])