Construction And Operations Plan - Boem.gov

Construction andOperations PlanAppendix D - PreliminaryHierarchy of StandardsJuly 26, 2021Submitted byKitty Hawk Wind, LLC1125 NW Couch Street, Suite 600Portland, Oregon 97209Submitted toBureau of Ocean Energy Management45600 Woodland RoadSterling, Virginia 20166Prepared byTetra Tech, Inc.10 Post Office Square, 11th FloorBoston, Massachusetts 02109

Kitty Hawk Offshore Wind ProjectKTH-GEN-CON-PLN-AGR-000067 011 Rev 01Appendix D Preliminary Hierarchy of StandardsAppendix D Preliminary Hierarchy of StandardsDocument Reference: KTH-GEN-CON-PLN-AGR-000067 011 Rev 01Prepared by:Checked by:Approved by:Jennifer EastaughMichael FrancisChristopher MorrisRevision SummaryRevDatePrepared byChecked byApproved by0111 Dec 2020Michael FrancisJennifer EastaughChristopher MorrisDescription of d to BOEMPage 1 of 10

Kitty Hawk Offshore Wind ProjectKTH-GEN-CON-PLN-AGR-000067 011 Rev 01Appendix D Preliminary Hierarchy of StandardsTable of ContentsTable of Contents2Table of FiguresD.1IntroductionD.2General Hierarchy of StandardsD.2.1Overall Regulations and Governing rsD.3Wind Turbine Generators (WTGs) and FoundationsD.3.1Structural and Mechanical DesignD.3.2Electrical DesignD.3.3Structural and Mechanical FabricationD.3.4Quality ManagementD.4Electrical Service Platform (ESP)D.4.1Structural and Mechanical DesignD.4.2Electrical DesignD.4.3Structural and Mechanical FabricationD.4.4Quality ManagementD.5Power Cables (PC)D.5.1Array CablesD.5.2Export Cable23334455566666789999Table of FiguresFigure D-1Hierarchy of Standards3Page 2 of 10

Kitty Hawk Offshore Wind ProjectKTH-GEN-CON-PLN-AGR-000067 011 Rev 01Appendix D Preliminary Hierarchy of StandardsIntroductionKitty Hawk Wind, LLC (the Company) is designing, fabricating and installing offshore facilities as part of thef or the Kitty Hawk Offshore Wind Project (Project). This document presents the design-basis approach toapplying codes and standards to the design of the facilities.The f ollowing sections describe the standards that will be applied f or the entire Project and f or specificf acilities within the Project. The organization of offshore wind f arm f acilities and applicable standards isshown in Figure D-1.Project-WideStandardsWTG and WTGFoundationsFigure D-1Electrical ServicePlatformArray CablesExport CablesHierarchy of StandardsThis document describes high-level design standards f or the offshore f acilities and will be submitted forapproval by the Certified Verification Agent (CVA) f or the Project, and subsequently to the Bureau of OceanEnergy Management (BOEM) f or approval prior to commencement of the design. Accordingly, high levelstandards are presented herein. As design of the offshore facilities progresses, a more detailed list of thelatest version of the applicable standards will be developed and presented in the design basis f or each ofthe Project areas/facilities described above.General Hierarchy of StandardsD.2.1 Overall Regulations and Governing DocumentsBOEM has been granted jurisdiction over renewable energy activities on the Outer Continental Shelf (OCS)through the Section 388 of the Energy Policy Act of 2005. Regulations were promulgated by BOEM at 30Code of Federal Regulations (CFR) § 585.The U.S. Coast Guard (USCG) is a cooperating agency with BOEM, and there is a Memorandum ofAgreement (MOA) in place between the Bureau of Ocean Energy Management, Regulation andEnf orcement (predecessor agency to BOEM) and USCG. 1 Under the MOA, USCG will regulate vesselswhere USCG has an applicable regulation. The Bureau of Safety and Environmental Enforcement (BSEE)1https://www.boem.gov/MOA-USCG-BOEMRE/Page 3 of 10

Kitty Hawk Offshore Wind ProjectKTH-GEN-CON-PLN-AGR-000067 011 Rev 01Appendix D Preliminary Hierarchy of Standardsis a sister agency to BOEM and there is a Memorandum of Understanding (MOU) between the agenciesregarding authorities on the OCS.2The Company will follow the hierarchy below to determine the applicable standards for design of its facilitiesas described in the Project Construction and Operations Plan (COP):1.U.S. laws, regulations, and applicable requirements:a. 30 CFR § 585b. Lease OCS-A 0508c. Permits issued to the Project2.Guidance documents issued by agency having jurisdiction:a. BOEM COP Guidelines33.National Organization Standards:a. American Wind Energy Association (AWEA) Of f shore Compliance RecommendedPractices 2012b. American Petroleum Institute (API)4.International Organization Standards:a. International Electrotechnical Commission (IEC), including IEC Renewable Energy(IECRE)b. American National Standard Institute (ANSI)c. International Organization for Standardization (ISO)5.Classif ication Society Standards:a. DNV GLb. American Bureau of Shipping (ABS)6.Foreign Organization Standards:a. European Standard (EN)Where specific editions of standards are not provided, the edition is assumed to be the most current inef f ect upon approval of this Hierarchy of Standards.D.2.2 CertificationCertif ication of the Project will be carried out by a CVA in accordance with 30 CFR § 585.705 et seq., anapproved Verification Plan, IECRE OD-502, 2018 Edition.D.2.3 SafetyBOEM pre-empts the authority of the Occupational Safety and Health Administration (OSHA) for renewableenergy on the OCS.4 However, to comply with 30 CFR § 585 Subpart H, Kitty Hawk Wind, LLC will adoptOSHA requirements at 29 CFR § 1910 f or design of Project-specific components, specifically includingtransition pieces and Electrical Service Platforms (ESPs). If referenced safety standards conflict, the morestringent shall delines/4https://www.boem.gov/TAP-686/Page 4 of 10

Kitty Hawk Offshore Wind ProjectKTH-GEN-CON-PLN-AGR-000067 011 Rev 01Appendix D Preliminary Hierarchy of StandardsD.2.4 SuppliersCertif ication under ISO 9001 Quality Management 2015 is pref erred. If the preferred certification is notavailable, the contractors and suppliers shall provide evidence to the Project (including the CVA) of aconsistent quality management system including documentation processes, covering all aspects of theirscope of supply.Wind Turbine Generators (WTGs) andFoundationsD.3.1 Structural and Mechanical DesignD.3.1.1 Primary StandardsThe primary standards for the design of the wind turbine generators (WTGs) and foundations will be: IEC 61400-1 – Wind Turbines Part 1: Design Requirements, 2019 EditionIEC 61400-3-1 – Wind Turbines Part 3-1: Design requirements f or f ixed offshore wind turbines,2019 Edition.WTG components that have a Component Certificate issued pursuant to IECRE OD-501 f or U.S. conditions(i.e., 60 Hertz) will f ollow the design standards prescribed in the Component Certificate. The standards forthe tower will be specified in the design basis and will f ollow standard industry practice. The f ollowingguidelines will apply to components designed specifically for the Project.D.3.1.2 Supplementary Standards and GuidelinesD.3.1.2.1 General DNVGL-ST-0126 - Support structures for wind turbines.DNVGL-ST-0437 - Loads and site conditions for wind turbines.D.3.1.2.2 Tropical Cyclones AWEA Offshore Compliance Recommended Practices (2012), Section 5.9D.3.1.2.3 Robustness Check API – Recommended Practice for Planning, Designing and Constructing Fixed Offshore Platforms– Working Stress Design (API-RP2A-WSD, version 22).D.3.1.2.4 Other Supplementary Standards API RP 2GEO – as applicable33 CFR Navigation Aids as applicableAPI RP 2A WSD 22nd Edition – boat landings, hoistsFederal Aviation Administration (FAA) lighting requirements as specified in a Determination of NoHazardDNV GL recommended practices for designEurocode 3 seriesPage 5 of 10

Kitty Hawk Offshore Wind ProjectKTH-GEN-CON-PLN-AGR-000067 011 Rev 01Appendix D Preliminary Hierarchy of StandardsD.3.2 Electrical DesignAs previously noted, WTG components that have a Type Certificate issued pursuant to IECRE OD-501 willf ollow the design standards prescribed in the Type Certif icate. The f ollowing guidelines will apply tocomponents designed specifically for the Project.D.3.2.1 Primary Standard IEC 61400-1 – Wind Turbines Part 1: Design Requirements, 2019 EditionD.3.2.2 Supplementary Standards and Guidelines National Electrical Manufacturers Association (NEMA)National Fire Protection Association (NFPA) 70, 70E, IEEE 1584 –National Electric Code (NEC)National Electric Safety CodeIEC 61400-24 - Wind turbines - Part 24: Lightning protectionIEC 60364-1 - Low-voltage electrical installations - Part 1: Fundamental principles, assessment ofgeneral characteristics, definitionsIEC 60204-1 - Saf ety of Machinery - Electrical Equipment of Machines - Part 1: GeneralRequirementsIEC 60204-11 - Saf ety of Machinery - Electrical Equipment of Machines - Part 11: Requirementsf or HV Equipment for Voltages Above 1,000 V AC or 1,500 V DC and Not Exceeding 36 kVIEEE applicable Std for Equipment, Battery System, Equipment connections and groundingD.3.3 Structural and Mechanical FabricationD.3.3.1 Primary StandardThe applied fabrication standards shall follow the design standards. Primary fabrication standards shall be: DNVGL-OS-C401 – Fabrication and Testing of Offshore StructuresEN 1090 Execution of steel structures.D.3.4 Quality Management ISO 3834-2 Quality requirements for fusion welding of metallic materials -- Part 2:Comprehensive quality requirements.Electrical Service Platform (ESP)D.4.1 Structural and Mechanical DesignThe structural and mechanical design of the ESP may be carried out under U.S. standards or Europeanstandards, as defined below. An ESP designed to U.S. standards must be manufactured to U.S. standards,and an ESP designed to European standards must be manufactured to European standards, as defined inSection 4.3.D.4.1.1 Safety ClassFor either U.S. or European design and manufacturing standards, a safety class of L-1 will be applied.Page 6 of 10

Kitty Hawk Offshore Wind ProjectKTH-GEN-CON-PLN-AGR-000067 011 Rev 01Appendix D Preliminary Hierarchy of StandardsD.4.1.2 U.S. DesignD.4.1.2.1 Primary Standard API RP 2A WSD – 22nd editionD.4.1.2.2 Supplementary StandardsFor designs carried out under API, the following supplementary standards will be applied as appropriate: API 2MET – Derivation of Metocean Design and Operation ConditionsAPI RP 2EQ – Seismic Design Procedures and Criteria for Offshore StructuresAPI RP 2GEO – Geotechnical and Foundation Design ConsiderationsAPI RP 2SIM – Structural Integrity Management of Fixed Offshore StructuresAPI RP 2L – Recommended Practice for Planning, Designing and Constructing Heliports for FixedOf f shore PlatformsAPI 2C – Specification for Offshore Pedestal-mounted CranesAPI Bulletin 2U - Stability Design of Cylindrical ShellsNACE SP0176-2007 – Corrosion Control of Submerged Areas of Permanently Installed SteelOf f shore Structures Associated with Petroleum ProductionD.4.1.3 European DesignD.4.1.3.1 Primary Standard DNVGL-ST-0145 – Of fshore Substations, April 2016 EditionD.4.1.3.2 Supplementary Standards DNVGL-OS-C101 - Design of offshore steel structures, general - LRFD methodDNVGL-OS-C401 - Fabrication and testing of offshore structuresDNVGL-ST-0126 - Design of support structures for wind turbinesDNV GL recommended practices for designEurocode 3 seriesD.4.1.3.3 Additional Robustness CheckFor designs carried out under DNV GL, an additional robustness check of the DNV GL design will beperf ormed for the extreme storm condition under API RP 2A WSD – 22nd edition.D.4.2 Electrical DesignThe electrical design will follow the standards listed in this Section 4.2 regardless of the path chosen underSection 4.1.D.4.2.1 Primary StandardsThe primary electrical design standards will be Institute of Electrical and Electronics Engineers (IEEE) andIEC applicable standards.National Electric Safety Code (NESC) and NFPA 70 National Electric Code.Page 7 of 10