Wind Technical Standards Committee

Offshore Wind SubcommitteeApril 17, 2020

Walt MusialChair

Offshore Wind SubcommitteeNational Renewable Energy Laboratory

April 17, 2020Virtual Semi-Annual Meeting

Offshore Wind Subcommittee

AWEA WTSC Offshore Wind Subcommittee Virtual Semi-Annual Meeting

Opening Plenary Agenda – April 17, 2020

Friday April 17, 2020 10:00 AM – 11:00 PM Opening Plenary – Briefing to Offshore Wind Standards Subcommittee (OWTAP) and Working Group Members

10:00 AM – 10:20 AM Walt Musial, Chairman of the OWTAP committee, will lead a plenary discussion to introduce the AWEA offshore standards initiative to new members, provide an update on progress, and describe on-going work and next steps for the project.

10:20 AM – 10:40 AM Working Group Convener Presentations - Conveners from the five Working Groups will provide a progress update.

10:40 AM – 10:50 AM Sabrina Morelli, AWEA, will present ongoing work under WEHSSC and WWSC committees

10:50 AM – 11:00 PM Wrap Up and Q&A

Organizers and SponsorsWalt Musial

Sabrina MorelliMichele MihelicTom Vinson

Liz BurdockElizabeth BarminskiEmily Chambers

Mike DerbyGary Norton

Darryl FrancoisDan O'ConnellSid FalkCheri Hunter & John Cushing - BSEE

Initiative on U.S. Offshore Wind Standards

Project Objective

To develop a comprehensive set of consensus-based roadmaps to navigate the existing standards and guidelines to:

• Facilitate safe designs and orderly deployment of U.S. offshore wind energy

• Account for the unique offshore conditions on the U.S. Outer Continental Shelf and state waterways

• Provide DOI with recommended practices that document industry “best practices” with procedural protections provided by ANSI process

Working Groups and Conveners

(WG1) AWEA Offshore Compliance Recommended Practices (OCRP)Maintenance Working Group OCRP1

Rain Byars – Shell New EnergiesGraham Cranston – SGH

(WG2) AWEA U.S. Floating Offshore Wind Systems Working Group OCRP2

Lars Samuelsson – ABSLeif Delp – Equinor

(WG3) AWEA U.S. Offshore WindMetocean Conditions Characterization Working Group OCRP3

Michael Drunsic – WSPLorry Wagner – Holt / Murphy Advisors

(WG4) AWEA U.S. Geotechnical and Geophysical Investigations and Design Working Group OCRP4

Matt Palmer – WSPMathieu Guinard – Atkins

(WG5) AWEA Offshore Wind Submarine Cables Working Group OCRP5

Georg Engelmann – Excipio EnergyBob Hobson – NKT HV Cables AB

U.S. Offshore Wind Standards Initiative Organizational Structure

• April 17, 2020 Virtual Opening Plenary at 10am EST: the common section drafts should be presented to OWTAP and conveners

• April 17 – April 24: Individual Working Group Meetings held at varying times throughout week

• April 24, 2020 Virtual Closing Plenary at 10am EST: some RP Drafts ready for peer review and internal review process established

• May 7, 2020 Offshore Wind Subcommittee Conference Call at 11am EST: follow-up call from April 17 – 24 Virtual Semi-Annual meetings

• August 18, 2020 Offshore Wind Subcommittee Meeting at IPF Together in Providence, Rhode Island

• October 2020 Offshore Wind Subcommittee Meeting at the AWEA Offshore WINDPOWER 2020 Conference, New York, New York (the week of October 12)

Timeline

Virtual Semi-Annual Meeting April 17-24, 2020 Schedule

UPDATE ON OFFSHORE WORKING GROUPSWorking Group Conveners

WG1 OCRP 2nd Edition

Rain ByarsGraham Cranston

April 17, 2020Virtual Semi-Annual Meeting

Offshore Wind Subcommittee

Scope of Working Group 1

Second edition of AWEA OCRP 2012 recommended practice (RP) in compliance with the ANSI/AWEA Standards Development Procedures: • Applies to offshore wind energy systems that extract kinetic energy from wind, and transmits

and/or store that energy offshore or on land. • Applies to systems installed in state and US federal waters with a rotor swept area greater than

200 m2.

• Includes design, manufacturing, installation, commissioning, operation and service, decommissioning, and re-powering.

• Includes rotor-nacelle assemblies, towers, substructures, foundations, electrical service platforms, inter-array and export cables (by reference to WG5), measurement and monitoring equipment, and any other permanently installed auxiliary platforms or equipment.

Scope of Working Group 1

The AWEA OCRP Maintenance Working Group shall include, but is not limited to the following considerations:● Review AWEA OCRP 2012 to identify gaps where the recommended practices do not address industry

needs, and to update all references ● Definition of minimum requirements specific to this scope by reference to existing relevant industry codes,

standards and guidelines● Develop methods to fill gaps specific to this scope● Work with other OWTAP working groups to manage interfaces among RPs to ensure consistency and

compatibility without unnecessary duplication of information, and to explore how synergies can be leveraged to create greater efficiencies throughout a project and the industry

The working group shall not address: ● Service, installation, or survey vessels● Floating wind energy systems

Membership Details• Approximately 120 WG members on the roster, 20 on web

conferences, 30-40 face-to-face

• Bi-weekly WG meetings, plus focused breakouts on chapter topics, electrical, structural, other topics as needed

• Participation from:

• Regulators • Developers• OEMs• CVAs

• Consultants• Contractors• Supply Chain• Academics

Overview of OCRP WG1 Effort

The Working Group• Offshore Wind Standards Subcommittee

formed in Oct 2017 under AWEA Wind Technical Standards Committee, Chaired by Walt Musial

• Working Groups kicked off April 2018• All volunteer, wide industry

representation• Working Group 1 – OCRP second edition

The OCRP• Serves as a Roadmap for application of

international and US requirements to Offshore Wind in U.S. waters

• Addresses gaps, overlaps, and conflicts• Does not intend to create new

requirements• Committee Draft on track for mid-2020• Will be published as an American

National Standard through AWEA/ ANSI

Significant Changes from 2012 Edition

Chapters Added Content Updated Content

Design, Fabrication Interfaces, Control Systems, Lightning Protection, Design for OSH, Fall protection

US Regulations, US Standards, Access, Heli-hoist and Heli-pads, Service Lifts, Cranes and Hoists, Offshore Substation, Marking and Aids to Navigation

Installation HSE, Site-Specific Planning, Manuals, Offshore Substation, HSE, Sea-Fastening, Load-out, Work at Project Port

Environmental Conditions

Operation US Regulations, Condition Monitoring, In-Service Inspections, Post-Event Inspections

Decommissioning Repowering, Life Extension Rename to “Life Cycle”

General Organized by component

Current Status / Look Forward• We have received comments from the Offshore Wind Subcommittee/OWTAP.

• 285 comments total• Next week and ongoing – work through open comments

• Offshore Wind Subcommittee/OWTAP approves document. Submit to WTSC.• Receive comments from WTSC. Review and resolve comments.• Public draft and comment• Balloting• WTSC approves document. Deliver to ANSI for publication.

WG2 Floating

Lars SamuelssonLeif Delp

April 17, 2020Virtual Semi-Annual Meeting

Offshore Wind Subcommittee

• The working group shall write Recommended Practices (RP) for Floating Offshore Wind Turbine (FOWT) systems in U.S. waters in compliance with the ANSI/AWEA Standards Development Procedures.

• The scope of the RP shall address the unique aspects of unmanned floating offshore wind turbine technologies in U.S. state and federal waters throughout the life of the installation including design, fabrication, construction, installation, commissioning, operation, and decommissioning.

• A wind turbine shall be considered as a FOWT if the floating sub-structure is subject to hydrodynamic loading and supported by buoyancy and a stationkeeping system.

• A FOWT encompasses five principal subsystems: the Rotor Nacelle Assembly, (RNA), the tower, the floating sub-structure, the stationkeeping system and the onboard machinery, equipment and systems that are not part of the RNA.

OCRP WG 2 – Floating Standard Scope

OCRP WG 2 – Floating Standard Approach

• We will adopt the IEC TS 61400-3-2, Ed. 1 2019-04, Wind energy generation systems – Part 3-2: Design requirements for floating offshore wind turbines

• We will follow the same approach the AWEA / ANSI initiative for land based turbines that will adopt IEC 61400-1, Wind energy generation systems - Part 1: Design requirements and only address US specific items.

• First draft have been distributed to the 114 members

IEC 61400-3-2 approach

IEC 61400-12005, Third Edition2019, Fourth Edition• Wind turbine

design requirements

• Onshore-only

IEC 61400-3-12009, First Edition2019, First Edition (-3-1)• Added Offshore-

relevant items• Focus on fixed-

bottom

IEC TS 61400-3-22019, First Edition TS• Floating Wind-

specific• Added Floating

Offshore-relevant items

ISO TC 67 19000 Serie of Standards for use in the Oil and Gas Industry

US National Standard (AWEA) Adoption of IEC 61400-1

• Chapter 0 of the AWEA/ANSI document will include comments on;• 7.4 Design situations and load cases• 7.4.7 Parked (standstill or idling) (DLC 6.1 to 6.4)• Note 17 of section 7.6.3.3 • Note 19 of section 8.1 • 10.1 General• 10.5 Disconnection from supply sources• 10.21 High voltage switchgear

• The remaining sections will be a direct adoption of IEC 61400-1

OCRP WG 2 – Floating Standard Schedule

We shall have an 80% ready document with well defined action items for persons and groups at the time of the plenary closing meeting on

April 24, 2020.The open items shall be closed within 2 month by end of June.

The references to the supporting groups 3-5 may take longer times to finalize but we shall identify individuals in charge to fill these gaps and

work closely as liaisons.

WG3 Metocean

Michael DrunsicLorry Wagner

April 17, 2020Virtual Semi-Annual Meeting

Offshore Wind Subcommittee

Scope

• Develop recommended practice for metocean conditions characterization in U.S. waters (both fresh and salt water);

• Includes collecting, analyzing, and interpreting information related to metocean conditions to support planning, design, construction, operations, and decommissioning.

Membership/Roles

• Co-Chairs: Michael Drunsic (WSP) & Lorry Wagner (Holt / Murphy Advisors)

• Secretary: Chris Rein (EDR)• Liaisons: WG1 OCRP – Michael Drunsic; WG2 Floating – Lorry Wagner

(Holt / Murphy Advisors); WG4 Geotech – Rafael Ramos; WG5 Cables – Chris Rein/Daniel Mendelsohn

• Membership includes representatives from developers, consultants, OEMs, government, and academia

Current Status/Schedule

• Nearing completion of key sections; currently working on addressing outstanding gaps, consolidation

• Next step will be internal review within WG of completed draft• Targeting completion of initial draft for review/comments by OWTAP

and other working groups by June 1, 2020• Final Committee Draft complete by end of 2020

WG4 Geotech & Geophysical

Matt PalmerMathieu Guinard

April 17, 2020Virtual Semi-Annual Meeting

Offshore Wind Subcommittee

Scope and Membership

• General Scope• Create a US standard covering geotechnical and geophysical aspects of US

offshore windfarm, including site investigation, geotechnical laboratory testing, ground modelling and geotechnical design

• Membership Details• 55 members from approximately 40 company/institutions covering all aspects

of the industry except manufacturer

Working Group Status

• Document Sections• Design• Ground Modeling• Geohazards, Geology, and Geophysics• Site Investigations

• Progress• Sections drafted and in review within individual subgroup• Others drafting nearly complete, internal review to begin soon• Some sections will be available for review by larger group in April• Balance of sections available for review early summer

WG5 Subsea Cables

Georg EngelmannBob Hobson

April 17, 2020Virtual Semi-Annual Meeting

Offshore Wind Subcommittee

Subsea Cables:

Greater Than the Sum of Its PartsNot Just a Bundle of Conductors… A Submarine System

Sumitomo Electric

www.youris.com

ABB Group

Nexans

AWEA Offshore Wind Subcommittee, Recommended Practice for Design, Deployment, and Operation of Submarine Cables in the United States (OCRP5)

• Current USA experience with offshore wind (OSW) is limited to five (5) 6 MW turbines with the highest cable voltage being 35 kV, similar to onshore wind.

• Europe has over 30 years experience with OSW, and over 100 years with submarine power cables and has an established set of “best practices”.

• As of 2018 Europe has over 18.5 GW and over 4,500 offshore grid connected wind turbines across 11 European countries, with more being planned and installed every day.

• US oil and gas offshore experience only goes up to 35 kV for submarine cables, primarily consisting of umbilicals.

• Currently, BOEM / BSEE are sorting through 475 standards documents that apply to the various parts of a wind farm which can apply to offshore wind farms for evaluation of the wind farm design and approval.

• Only current US recommended practice for Offshore wind is AWEA Offshore Compliance Recommended Practices (2012): OCRP2012

Current Status for US and Europe with Standards for Offshore Wind Farms

Subsea Cables: Trends and Expected Challenges

• From 30 MW to 800 MW in one step and with planning of worlds largest farm at 2640 MW

• Bigger turbines! 12 MW under final testing and bigger on the drawing board

• Taller towers and floaters with dynamic cables and deeper water

• Higher voltage AC array cables (66 kV currently being the norm), and there is talk of maybe DC array cables

• Longer export cables

• HVAC and HVDC offshore transmission grid

Trends

Challenges

Standards that work for the developer and for BOEM (Bureau of Ocean Energy Management) Lots of cables to be installed.

US demand in 2030 predicted to be 691 km / year (430 miles / year) to 1113 km / year (692 miles / year). Europe demand for offshore cables in 2030 estimated at 1800-2000 km / year.

83% of total value of OSW insurance claims concern cable failures. (Source: Lloyd Warwick International Claims Database – 2002-2019)

OCRP 5 - AWEA Recommended Practice for Submarine Cables

• Bob Hobson - NKT Inc.

• Georg Engelmann - Excipio Energy

• Darin Lawton – Burns and McDonnell

• Summary• Cables are a critical part of the offshore wind farm (OWF) and as such require proper attention over the life of the wind farm from

conception to decommissioning. It has been recognized that the working group does not need to “reinvent the wheel” as there areample existing global standards covering the relevant technical requirements

• Short term approach is to stay with a Functional performance based “standard”• IEC based standards are more performance based and test complete systems

• IEC requires prequalification testing of the entire cable system and type testing of the entire cable system both electrical andmechanical.

• Well proven track record of success in Europe for both submarine and offshore wind.

• IEEE and other US standards are more prescriptive, and component based especially for power cables.• US based standards philosophy to allow interchangeability of components and manufacturers in a cable system. • Works for LV and MV very well because of years of development and implementation.

• Land Based US wind had quite a steep and painful learning curve to accommodate the new wind environment.

WG5 Membership DetailsRoster: 109Participants: 93BiWeekly Attendees: ~24RP Authors/Contributors:27

AWEA Offshore Wind Subcommittee, Recommended Practice for Design, Deployment, and Operation of Submarine Cables in the United States (OCRP5)

• Road Map to best practices for export cables & inter-array submarine cables

• OCRP5 has identified over 34 standards organizations and over 127 standards for just power cables • Goal for recommended practice is to develop a road map, or reference, that leads the reader to the appropriate governing standard. For

example, “Cable Ampacity in Duct” designers should go to this standard under this section for details on how to apply.• List of standards with definitive useful information (to be directly referenced in WG5 cable standard)• List of standards that point to other standards that contain definitive useful information • Helpful reading.

• The recommended practice has approximately 100 subject headings related to the “cradle to grave” of an OWF submarine power cablesystem

• OCRP5 working group has over 100 members contributing from a very diverse group of users of which over 20 are on the biweekly calls.• Expect to have draft for AWEA OWTAP internal review this month (April 2020).• Final document from working group will go out for public comment.• Following the ANSI consensus standard development approach.

Trends

Current Status• Writing of RP ongoing ~ 60% Complete• 73% of Sections populated, 55%

Reviewed

Scope of Work of WG 5

• 1.0 General Introduction

• 2.0 Route Planning & Permitting

• 3.0 Cable Route Design

• 4.0 Survey and Data Handling

• 5.0 Cable Design

• 6.0 Cable Procurement & Installation Services

• 7.0 Cable Manufacturing

• 8.0 Cable Installation

• 9.0 Operations, Maintenance and Integrity Management

• 10.0 Decommissioning

• 11.0 Documentation/Data Management Requirements

• Appendix 1 Standards Related to this Recommended Practice

• Appendix 1.1 Standards directly Referenced in this RP

• Appendix 1.2 Additional Standards Related to OSW Cable systems

• Appendix 1.3 Additional Useful related references

Major Steps in Developing the Recommended Practices

Develop Outline for RPWrite First Draft of RPInternal Review of First Draft (90 days)Internal Working group DraftFinal Draft Submitted for OWTAP and Working Groups OWTAP Review Comment Period (30 days)Resolve OWTAP CommentsFinal Committee DraftFinal Draft Submitted for Approval by WTSC30 day ballot periodWorking Group Resolves commentsAWEA Staff Submit BSR-8 to ANSIPublic comment is open for 45 daysReview and Resolve Public Comments(Optional Appeal Process)AWEA Staff Submit BSR-9 to ANSIANSI Approval process and Publication

Internal Working GroupAbout 12 – 24 months

External Working Group –About 12 months

Common Sections• Abbreviations/definitions

• Default to IEC definitions, and add as necessary• Collect definitions already written by Working Groups

• Foreword• Common to all documents • Serves to explain how to use the set of modules/documents

• Acknowledgments• Common to all documents • Additional acknowledgments section within each Module noting contributors•

• Formatting• Following IEC format

Common Sections to be compiled and drafted by Walt Musial and the Network.

AWEA Wind Environmental, Health, and Safety CommitteeOffshore Safety Subcommittee: Provide EHS program development guidance for the offshore wind energy space.- We have a new volunteer to chair this subcommittee, Geoff Neild, Vineyard Wind. Next step is to refine the scope of the standard. Please note the pandemic has stalled the start of the activities.

Safety Training Subcommittee: Align the minimum training and medical requirements for offshore wind energy workers.- There is a draft standard ready. The intent is to ballot the draft next week and will be open for public comment.

Contact staff liaison Michele Mihelic at standards@awea.org with questions or for more information.

Wrap-UpAny Open BusinessSummarize Actions

Adjourn

Questions?Contact standards@awea.org.

American Wind Energy Associationwww.awea.org/resources/standards