Please use this topic thread to post comments and information that is applicable to the Structural sub-committee of the U.S. Wind Energy Standards Group. Please see the first post in the “General Thread” for the contact list. Please contact the sub-committee lead, Rolando Vega, brian.kramak@intertek.com, if you have any questions or comments that you prefer not to post below.
Structures Group:
The content of our meeting today January 14 @ 3:30-5:00pm (Eastern) is all attached to this email.
The agenda for today’s meeting was:
-
Review of comments against minutes from 11/12 meeting. ~ 4 min total -
Review recruitment activities – who asked others to join working group ~ 5 min total
a. welcome Allan Henderson, Shelton Stringer and Nestor Agbayani (by Case van Dam)
b. welcome John Ericksen, Brian Reese, and Dave Brinker from the TIA (by Chris Martin)
c. welcome Joel Bahma (by Craig Moller)
d. welcome Leighton Cochran and Jomaa Ben-Hassine from the ASCE (by Rolando Vega)
e. welcome to ASCE Wind Energy Structures Group members (by Jomaa Ben)
3. Review meeting with TIA TR14 committee (by Rolando Vega & Brian Reese) ~ 4 min total
4. Review meeting with ASCE (by Rolando Vega and Jomaa Ben-Hassine) ~ 4 min total
5. Review and discuss flowchart for design and permitting process (all) ~ 30 min total
6. Review national survey to guide Guide & Standard needs (by Kevin Smith and Steve Owens) ~15 min total
7. Definition of Sub-groups ~15 minutes
a. Survey development and outreach – 5 volunteers ???
(Leader: Kevin Smith-DNV)???
b. Partial Safety Factors Section – 5 volunteers ???
(Leader: Dr. Delong Zuo-TTU)???
c. WT Tower Design Section – 4 volunteers???
(Leader: Nestor Agbayani-MSKA Structural)???
d. WT Foundation Design Section – 4 volunteers???
(Leader: Jomaa Ben-Hassine)???
e. Design and permitting process (all)
(Leader: Dr. Rolando Vega - ABS)
f. Overall consistency (all)
(Leader: Chris Martin – Marcel)???
8. Other new issues ~10 min total
9. Set date and agenda for next meeting ~2 minutes
Attachments:
Meeting Minutes from last meeting on 2009-11-12
Survey document
US Wind Energy Structures Guide
US Wind Energy Structures Guideline.doc (247 KB)
Draft Large Turbine Structural Approval Survey_Rev 2_01142010.doc (45 KB)
20091112 Notes of Structural team meeting.doc (125 KB)
All,
Files sent out for review as part of 10/27 & 28 meeting minutes
Still looking for comment and feedback on notes.
Please read the email from Rolando Vega from last week so you can be prepared for meeting - see below.
Agenda for 12 Nov meeting (from 10/27&28 meeting minutes):
- review of comments against these minutes from 27 & 28 Oct. ~ 5 min
- review recruitment activities – who asked others to join working group ~ 5 min
- review survey prepared by Steve Owens and team ~20 minutes
- review Rolando’s discussion with ASCE 7 committee ~ 5 min
- review Chris’s discussion with TIA 222 committee ~ 5 min
- review Rolando’s flowchart of design process ~ 10 min
- set date and agenda for next meeting ~ 10 min
If time allows – discuss logistics – adequacy of 12 Nov livemeeting tool set up by secretary, possible use of SharePoint offered by Chris Martin for document control
Text from Rolando’s Email:
Many thanks, Brian, for your good job taking notes and getting back to the AWEA-NREL Structures Committee promptly!
I would also like to thank everyone for allowing me to lead the Group. I will do my best. It is my hope to appreciate your comments and feedback, and listen to your contribution by harmonizing everyone’s input into a single voice.
Given that we will eventually enter into some very interesting discussions, I would like to point out what I value and would like to see in practice in our team:
1. Respect
2. Integrity
3. Excellence
The following tasks need your ACTION. Priority should be given to the first item.
1. Review the SCOPE-AWEA Structures Guide document (using Track Changes Tool) and send to me ASAP (early next week if possible). If you make no suggestions I will formulate the best statement from everybody’s feedback and send the revised Scope to Sandy and Corrie on Thursday, November 4 for their use communicating what the Structures Group is about to do.
2. Mark your calendars for our first Net-Meeting on November 12, 2009 @ 4:30 PM EST. Brian will send invitation with instructions later.
3. Please provide Brian with your feedback on the Meeting Minutes by next Friday 11/6. He will incorporate into a revised Minute and we will discuss/approve in the next meeting.
SCOPE-AWEA Structures Guide.doc (24.5 KB)
NREL_AWEA Permitting Guideline Work Matrix.xls (36.5 KB)
20091027 and 28 Notes of Structural team meeting.doc (219 KB)
Meeting Minutes
US Wind Energy Structures Committee
Purpose: Development of Design & Permitting Guidelines
Date: 05/13/2010
Attendance
14 people in attendance.
attendance 13 May FirstName LastName Sub-group
? Albert Fisas Camañes Tower Design
? Allan Henderson ?
X Allan Jeary inspect structural health monitoring
? Andrew Golder ?
? Beverly Cisneros IT Support
X Bill Holley - Safety Factors
- Tower design
? Brad Clark ?
X Brian Kramak Secretary
X Brian Reese WT Tower Design
excused Case van Dam Survey & Outreach Subgroup
excused Chris Martin Standardization Consistency
? Colwyn Sayers WT Foundation Subgroup
? Corrie Christol IT Support
X Craig Moller WT Foundation Subgroup
X David Brinker WT Tower Design
? Delong Zuo Safety Factors Subgroup
? DV Griffiths Safety Factors Subgroup
? Eckart Bodenbach ?
excused Emil Moroz ?
? Jerry Crescenti ?
excused Jim Rossberg Standardization Consistency
X Jim Lockwood Structural Health Monitoring
? Joe Burns WT Tower Design
? Joel Bahma WT Foundation Subgroup
? John Segna Standardization Consistency
X John Dunlop Survey & Outreach Subgroup
? John Ericksen WT Tower Design
? Jomaa Ben-Hassine WT Foundation Subgroup
? Jon Galsworthy ?
excused Kevin Smith Survey & Outreach Subgroup
X Lance Manuel Safety Factors Subgroup
X Larry Cercone Structural Health Monitoring
excused Lisa Brasche - Survey & Outreach Subgroup - Structural Health Monitoring
X Mark Molouf WT Tower Design
? Matthew Chase ?
? Mike Cronin ?
? Mike Robison Standardization Consistency
X Nestor Agbayani WT Tower Design
excused Paul Veers - Safety Factors Subgroup - Structural Health Monitoring
? Richard Flay ?
X Rolando Vega ALL
? Sandy Butterfield Standardization Consistency
excused Shelton Stringer WT Foundation Subgroup
X Shu-Jin Fang ?
excused Steve Owens Survey & Outreach Subgroup
excused Ted Stathopoulos Safety Factors Subgroup
? Thomas Korzeniewski Safety Factors Subgroup
excused Tom Warchol Structural Health Monitoring
X Tomas Vasquez -WT Foundation Subgroup - WT Tower Subgroup
Agenda
- Welcome & Attendance (by Rolando Vega & Brian Kramak) ~ 5 min total
** Rule: To speak, always say your name first
-
Review of comments against minutes from 03/08 meeting (by Brian Kramak) ~ 4 min total
-
Review of Draft Guide Structure, flow and gaps ~ 20 minutes
-
Subgroup leaders - PLAN and Words of Advise from our leaders ~ 4 min each
a. Jomaa Ben-Hassine - WT Foundation Subgroup (need to leave early)
b. Nestor Agbayani - WT Tower Subgroup
c. Jim Lockwood - WT Inspection and Structural Health Monitoring
d. Kevin Smith - Survey and outreach -
Other new issues ~10 min total
-
Next meeting @ WIND POWER EXPO in Dallas May 27 @8:00am-3:00pm Room 161
Discussions
Meeting commenced via teleconference at 3:30pm EST.
Roll call taken by Brian Kramak. x people in attendance. See list above.
Brian – requested comments to March meeting minutes. There were none, March meeting minutes are now official. April meeting minutes distributed earlier this week and will be posted to SharePoint. As previously discussed, the comment period for April minutes will be held open for one additional week to give members time to review these minutes.
Rolando gave update on review of draft – currently 30-40%. We will be 80% or so by time of meeting on 27th.
Rolando reminded about meeting 27th along with date and time. Next meeting @ WIND POWER EXPO in Dallas May 27 @8:00am-3:00pm Room 161
Rolando Discussed Tower subgroup leading the submittals, setting the tone and format for entire document. The main structure for guide is established – about 40 pages, without foundation section. The guide outline is slightly changed – we have a new section for terms and definitions. Towers is now in clause 7 and foundations are in clause 8. Rolando is working on sections 4 & 5, most is by reference to IEC 61400-1. ASCE 7 interpretation is being worked in now. Materials characteristics will be addressed in each applicable section – towers and foundations. Rolando did get drafts from tower and structural health groups. Document will be handed off to Chris Martin to do final cleanup. Jeff Menter will pass word to Chris, and Rolando will see him at structural congress as well. We will also ask Chris to develop a checklist based on the document structure for the AHJ’s.
Rolando will send draft guide before the show. He will bring hardcopy printouts as well.
Group reports –
Tomas V for foundations – biweekly conf calls. Last week had mtg and circulated a document for review and comment and sent back to Jomaa. Rolando should have same. Shelton had lead on deep pile foundations, but we have not heard from him. This section is missing. They took tower groups outline and followed same concepts, broken into two main areas – deep pile and shallow foundations. They go into fatigue requirements, strength, serviceability, etc.
Nestor for towers – nothing changed from near 100% draft from a couple weeks ago. Waiting for comments/feedback before making any changes. Dave Brinker (TIA 222 group) brought up issue – who is the audience? It impacts the level of depth of the document. If for people reviewing, then not so deep. If for designers to use as a design basis, then we really need to have significant detail in our document.
Rolando said the guideline is to establish the design basis for the designers. It should be strong enough to do this, but should also work for AHJ’s to review the design. It should discuss parameters to be taken into consideration in the design, but it does not cover 100% all requirements. It should refer to documents that have the detail equations.
Nestor – asked Dave B if this addresses issue they discussed off line. ANS – Yes – they will take this offline and determine impact on their document. Reviewed AISC vs eurocode fatigue requirements for tube towers. It appears that eurocodes are more conservative. Nestor asked presenter at structural congress uses same reference for basis, but doesn’t know why their numbers are so much more conservative.
Nestor – wants to clarify position – wind towers need to comply with code. If you think guideline has something new – please understand that these are the minimum requirements for the code, not new. He asked for more comments – real detailed review. Please make the time to read what we have put together.
Rolando – you are doing great – most people waiting for assembled document before commenting. Then we can expect feedback in all areas. Also – Nestor - be aware that the tower section you sent in will be formatted a little differently than what you sent in as we try to blend it in with other documents.
Jim Lockwood – inspection and health monitoring - bolting guidelines and foundations need some more time invested, and make sure there are no overlaps with the other sections. We’re looking at 3 pages for this section now – not what we’d considered, but we’ve been able to keep condensed. Allan Jeary provided good feedback last week. He’s looking for input from other members of subgroup, especially for reference to other documents – standards and guidelines – that are already written for this section of the document.
Rolando – questions how necessary the section is on concrete for towers – maybe we can leave it out for now so you can expand other areas, going beyond the 10 pages total. I would also encourage inspection and health monitoring group to include aspects of commissioning, and O&M that are included in the IEC 61400 documents. We want to make sure we have good coverage and that we do not conflict with IEC standards.
Jim L – will implement these changes.
Survey and Outreach – key members of this group are out. Rolando provided update.
Rolando – survey is finalized and sent to AWEA for distribution systematically to key contacts. John Dunlop involved in final review. John has tasked AWEA team to build online survey – it can be answered in about 3 minutes. AWEA staff is working on web page design. Once this is done, it will be sent out as email with a link to the online survey. Target is to have 100-200 stakeholders surveyed. The information on the survey will include the scope of the guideline.
No additional questions for subgroups.
Rolando – any new business or issues?
Rolando – need volunteer for guideline section on fabrication and installation. We need a couple paragraphs – about 5 hours work. Nestor can write about the steel tower part.
Craig Moeller – are you looking for references for reinforcement? Rolando concurred, and also noted that it includes quality assurance issues during construction/installation.
Craig Moeller can take this. Jim Lockwood volunteered to review as his work picks up right at the completion of construction/installation.
Foundation team – please get back with Jomaa and make sure foundation group is moving forward.
Tomas – has also tried a couple times and group has sent everything to Jomaa. He will try.
Rolando - discount for AWEA show based on our work? No – as our meeting is after the meeting.
Chris Martin will cover secretary duties for next meeting.
Brian – set date for next meeting – @ WIND POWER EXPO in Dallas May 27 @8:00am-3:00pm Room 161
Bill Holley motioned to close
Shu-Jin Fang seconded.
Meeting closed.
Submitted:
DRAFT
Brian Kramak
Secretary
US Wind Energy Structures Group
201005 13 Notes of Structural team meeting.doc (82 KB)
AWEA Offshore Wind Working Group
Call Notes
Wednesday, May 5, 2010
3:00 pm – 4:00 pm EST
Call in Number: 1-800-326-0013 code 3832536
Reminder of AWEA Antitrust Policy
• AWEA’s Antitrust Guidelines can be found on the website at awea.org/AWEA_Antitrust_Guidelines.pdf
New members
o Larry Shirley, NC Department of Commerce
o Roark Lanning, RES Americas
o Tim Ryan, Apex Wind
o Bruce Hamilton, Navigant Consultant
Gulf Oil Spill
o South Carolina was supportive of drilling, but questioning it now
o New Jersey and Delaware supportive of offshore wind over O&G
o News articles and wildlife studies can be found on the OWWG wiki
Minerals Management Service (MMS)
o Cape Wind approval by Salazar
o Cape Wind still reviewing conditions for approval
o Delaware RFI released in April
o The next meeting of the Governor’s Coalition is May 14th
Legislative Update
o Bingaman’s energy bill
o Some members say they will never support if there is O&G and others say they will only support if it does have O&G
o Energy tax piece was going to be added to the comprehensive bill
o Open question if they will try to move anything on energy tax as a stand-alone bill
o Kerry-Lieberman sent climate cap and trade bill to EPA to do analysis
o Earliest anything would move on this is June
WINDPOWER 2010
o WINDPOWER will be May 23-26th in Dallas, Texas
o Offshore Wind Working Group meeting will be Tuesday May 25th at 3:30-5:30pm in rooms 170 & 172. Please note that there will be no call-in option for this meeting.
o Offshore sessions at WINDPOWER on Wednesday May 26th
o 10:30 AM - 12:00 PM: Deepwater Offshore Wind Technologies, Room 9F
o 1:30 PM - 3:00 PM: Developing the Offshore Wind Industry in the United States, Room 10C
o 3:30 PM – 5:00 PM: Regional Challenges for Development of Offshore Wind Projects, Room 11C
North American Offshore Wind Conference and Exhibit
o The North American Offshore Wind Conference and Exhibit will be October 5-7, 2010, in Atlantic City, NJ.
o Abstract process is now open until May 17th
o Seeking abstracts on a broad range of topics, including
Project planning
Permitting
Financing
Environmental monitoring
Research and development
Construction and operations
Risk management
Marine transportation
Turbine design
Component manufacturing
Vessel design
Health and safety
Stakeholder Involvement
Market Development
Supply Chain
Data Collection
o Exhibit and sponsorship opportunities still available
US Offshore Wind Energy Guideline Working Group
o Making progress on the road-mapping and looking for volunteers from developers, manufacturers, and EPC contractors to participate in the subgroups. There will be a meeting on May 27th in Dallas. If you are interested in participating, please contact Walt Musial at walt_musial@nrel.gov.
Project Updates
o North Carolina
o NC breakfast on May 25th at the Sheraton Hotel in Dallas (invite attached)
o South Carolina
o Santee Cooper moving forward with their platform – hope to have it out this fall
Buoys still out collecting data
o SODAR from Clemson going onto Coast Guard platform this summer
o Virginia
o 2nd MMS task force meeting
DOD presented their approved group of lease blocks off coast
• Includes 36 blocks, but they are awaiting final approval before it becomes public
• All DOD groups came together to consider training, operations, etc. Radar is included, but not sure about FAA’s input.
Attendees
o Don Evans, Outer Banks Ocean Energy
o Mary Hallisey Hunt, Georgia Tech
o Pat Fleischauer, TRC
o Juan Moya, Gamesa
o Aileen Kenney, Deepwater Wind
o Jim Kupferer, Fluor
o John Bane, Outer Banks Ocean Energy
o Rob Propes, AWS Truepower
o Amardeep Dhanju, University of Delaware
o Mary Ann Christopher, Foley & Lardner, LLP
o Jeff Hammond, Ecology & Environment
o Skip Brennan, Iberdrola
o Paul Zarnowiecki, Orrick, Herrington and Sutcliffe
o Erik Miller, Invenergy
o Laurie Jodziewicz, NRG Bluewater
o Hank Giffin, SAIC
o Steve Pelletier, Stantec
o Nick Rigas, Clemson University Restoration Institute
o Caleb Gordon, Pandion
o Tom Vinson, AWEA
o Peter Mandelstam, NRG Bluewater
o Jack Godshall, Invenergy
o Michal Hahn, DOE
o Morten Andersen, DNV
o Jennifer Ghiloni, TetraTech
o Tim Oakes, Kleinschmidt
o Paul Bernhardt, Hatch Energy
o Chris Elkinton, GL Garrad Hassan
o Rob Gibbs, PSEG
o Rachel Pachter, Cape Wind
o Matt Thibodeau, Sargent & Lundy
o Marcia Bowen, Normandeau
o Lynn Gresock, Arcadis
o Chris Clark, Geo-Marine
OWWG Call Notes 5-5-10.doc (79 KB)
20100429 Press Notice for Fishermen’s Energy Buoy Launch 2.pdf|attachment (11.9 KB)
Meeting Minutes
US Wind Energy Structures Committee
Purpose: Development of Design & Permitting Guidelines
Date: 04/08/2010
Attendance
22 people in attendance.
Attendance April 8 First Name Last Name Sub-group
X Lisa Brasche - Survey & Outreach Subgroup
- Structural Health Monitoring
? Brad Clark ?
X Delong Zuo Safety Factors Subgroup
? Richard Flay ?
X Case van Dam Survey & Outreach Subgroup
? Ted Stathopoulos Safety Factors Subgroup
? DV Griffiths Safety Factors Subgroup
X Lance Manuel Safety Factors Subgroup
X Brian Kramak Secretary
X Kevin Smith Survey & Outreach Subgroup
tentative Rolando Vega ALL
? Mike Cronin ?
X Craig Moller WT Foundation Subgroup
X Shelton Stringer WT Foundation Subgroup
excused David Brinker WT Tower Design
X Mark Molouf WT Tower Design
? Matthew Chase ?
X Jim Lockwood Structural Health Monitoring
? Jon Galsworthy ?
X Chris Martin Standardization Consistency
? Allan Henderson ?
X Nestor Agbayani WT Tower Design
X Joel Bahma WT Foundation Subgroup
X Shu-Jin Fang ?
X Tomas Vasquez -WT Foundation Subgroup - WT Tower Subgroup
? Joe Burns WT Tower Design
excused Tom Warchol Structural Health Monitoring
X Brian Reese WT Tower Design
excused John Ericksen WT Tower Design
X Jomaa Ben-Hassine WT Foundation Subgroup
? Jerry Crescenti ?
excused Albert Fisas Camañes Tower Design
? Andrew Golder ?
X Bill Holley - Safety Factors - Tower design
X Thomas Korzeniewski Safety Factors Subgroup
X Steve Owens Survey & Outreach Subgroup
? Colwyn Sayers WT Foundation Subgroup
excused Emil Moroz ?
? Larry Cercone Structural Health Monitoring
excused Eckart Bodenbach ?
excused Sandy Butterfield Standardization Consistency
excused Jim Rossberg Standardization Consistency
? John Segna Standardization Consistency
X John Dunlop Survey & Outreach Subgroup
? Mike Robison Standardization Consistency
? Corrie Christol IT Support
? Beverly Cisneros IT Support
? Paul Veers - Safety Factors Subgroup - Structural Health Monitoring
? Allan Jeary inspect structural health monitoring
Agenda
-
Welcome & Attendance (by Brian Kramak) ~ 5 min total ** Rule: To speak always say your name first -
Review/approval of comments against minutes from 03/11 meeting
(by Brian Kramak) ~ 4 min total
3. Subgroup leaders - Update on SubGroup activities and strategy ~ 10 min each
a. Jomaa Ben-Hassine - WT Foundation Subgroup (need to leave early)
b. Nestor Agbayani - WT Tower Subgroup
c. Jim Lockwood - Inspection and Structural Health Monitoring
d. Kevin Smith - Survey and outreach
-
New items
Discussions
Meeting commenced via teleconference at 3:30pm EST. Brian Kramak opened meeting. Brian explained Rolando’s absence, and that he will join if schedule allows.
Roll call taken by Brian Kramak. 22 people in attendance. See list above.
Brian – requested comments to February meeting minutes. There were none, February meeting minutes are now official. March meeting minutes posted to SharePoint. As previously discussed, comment period for March minutes will be held open for one additional week to give members time to review these minutes.
Started with tower subgroup
Nestor – updated main group on tower subgroups progress. Met yesterday (4/7) and has statement of content. They are just starting writing foundation part of document.
Nestor – asked for clarification on format of citations – to follow format used for ASCE papers?
Jomaa – recommended listing references/citations at the end of the document. Then Jomaa also commented on writing style, asked if Nestor could share his document with other groups so they could follow similar format to make combining documents at the end into a single guideline easier. General comments were made by other group leaders that they would follow Nestor’s basic format when writing their sections.
Nestor – estimated that tower subgroup is 80% complete and will send their draft to other groups.
Brian – reminded everyone that there is another group focused on streamlining and editing document once all subgroups finished at the end, and that any inconsistencie would be addressed in this last editing effort.
Nestor – no further updates on tower group work.
Foundation subgroup
Jomaa – report on progress of foundation subgroup and that they were meeting weekly, and that they expected to have their draft ready on May 6th. Jomaa left for other mtg.
Nestor – asked for guidance on how deep to go in document – IE how to treat complex issues. Are complex issues treated as commentary with special formatting in the guide? Will only the concise requirement go in the guide?
Brian – asked Shelton, in foundation group, how they were treating this issue. Shelton said they were not that far along yet.
Nestor then also asked about reference material that may not be in English or not easily available.
Bill Holley – recommended not making any references in the guideline to documents in languages other than English.
Nestor brought up Eurocodes and Bill agreed that they should be referenced if appropriate. They are available in English.
Nestor then asked about how to phrase requirements – should vs shall – since this is only a guideline.
Bill H. suggested that this also be an area of review when drafting the assembled guideline, IE how hard or soft we make the requirements.
Nestor – pointed out that GL ‘Guidelines’ for fatigue life are more stringent than other requirements. Nestor believes that the guideline should be the most conservative approach.
Bill H – pointed out that these requirements are all commercially set anyway. He did not believe that the most conservative approach would be the best approach in this case.
Bill H and Nestor had a detailed discussion that ended in a question of ethics when the highest standard was not required. At this point Steve Owens voiced his opinion that certification is contractual commercial issue between the turbine supplier and the customer.
Nestor – summarized his point of view, that US designers may use this guideline to originate a design that may not meet certification agency requirements and that there will be towers with differing levels of safety margin and thus safety. He finished with a question – so inconsistency is OK?
Bill H – yes, as long as ‘minimum’ requirements are clear, and that they are clearly described as ONLY the minimum requirements.
Craig Moeller – pointed out that towers are normally by the turbine mfr, most owners looking for compliance with eurocodes but local authorities looking for compliance with US codes.
Nestor – pointed out that the smaller (<1mw) size WT manufacturers may not have this info.
Bill H – we need to address issues of ‘holes’ in current US standards.
Nestor pointed out that he has a section in his document that ‘coordinates’ the European and US requirements.
Steve Owen dropped off a little early for another commitment.
Brian pointed out that we were running long discussing this part of agenda and that we needed to move on.
Nestor concluded discussion that they would reference eurocodes and other EU standards as long as they were in English.
Inspection and Structural Health Monitoring subgroup
Jim Lockwood reported that they had 6 members – 3 of which significantly engaged in the groups efforts. Jim estimated that they were about 30% complete. They expect to have first draft to group by 23rd of April.
Jim pointed out that it was hard to stay within the prescribed length prescriptions that had been set.
Brian mentioned that when there is significant requirements in another document, that you can simply refer to the appropriate sections of that document instead of transcribing the entire requirement into our guideline. He gave an example of the AWEA small wind turbine standard which is only a few pages long, referencing the IEC standards for all applicable test methods.
Bill H thought this was a good idea, but that it may be challenging to implement for Nestor’s section on towers.
Shu Jin Fang asked a question of Jim Lockwood – are you covering entire tower/foundation/bolts/welding/etc in your portion of the document?
Jim said that they were, but that they were doing it by referring to many external standards, not any single standard.
Shu-Jin asked for a summary of the focus of this group. Jim replied that it was for monitoring recommendations or accepted practices once the tower is installed.
Nestor asked if they would reference local codes from the IBC. Jim asked for guidance. Nestor said he would have a better understanding of what was being discussed once he read the tower subgroups document. Jim looks forward to that input.
Nestor wanted to be clear that we need to make sure not to undermine local code requirements in those instances where local jurisdictions have already decided on what they want wind turbines to comply with.
As time was running short, Brian reminded everyone that we’re at the end of the race – everyone needs to focus on getting drafts of their sections to Rolando ASAP.
Brian – set date for next meeting – Thurs 13 May, 330pm EST.
Bill Holley motioned to close
Chris Martin seconded.
Meeting closed.
Submitted:
DRAFT
Brian Kramak
Secretary
US Wind Energy Structures Group
2010 04 08 Notes of Structural team meeting.doc (83 KB)
Meeting Minutes April 27th Phone Conference
Roll Call:
• The following attended:
o Dan Dolan MMI Engineering
o Morten Sogaard Andersen DNV
o John Cushing mms
o Jason Jonkman nrel
o Lance Manuel University of Texas
o Walter Musial Nrel
o Martin Pollack Applied Physical Sciences Corp
o Lars Samuelsson ABS
o Ron Young Stress Engineering Services, Inc.
o Lori D’angelo MMS
o Matt Palmer Cape Wind
o Alok Jha MMI Engineering
o Qing Yu ABS
o Shashikant Sarada DNV
o Brian Naughton DOE
Offshore Group Status
• The outcome from the coordination meetings with the structural group for land based turbines is that we are on the same page but the Offshore Groups document will be somewhat different in regard to content and layout. It was agreed that both groups much proceed with their current outlines and assess areas of potential overlap and conflict going forward.
Overall Approach to the Document
• The proposed approach, basing the outline using a combination of applicable IEC and API documents was generally accepted.
• For the end result to be useful to MMS, the guidelines should be prescriptive, not performance based.
Comments to the Outline
• Dan has received very little response to the proposed outline distributed to the members March 12th and requested the group members to review and comment. The comments should also include a prioritization among the topics.
• Lori suggested that the group review the Canadian standards as a template.
Contributions to the Draft
The topic was left for future meetings due to time constraints
Membership Recruiting
• The group is to assemble a list of possible candidates to invite. It is important that the people invited has the missing expertise and not invited because of representation.
• The following additional persons and competences were discussed:
o Someone that was involved in developing the Canadian C61400-1:08
o Moya from Gamesa
o Jim Lanard from Deepwater
o EPC Contractor
o Someone with experience in hurricane type winds
Plans for Meetings on May 27th
• Dan Dolan will put together a strawman agenda prior to the meeting and circulate for comments.
Schedule for Regular Calls
• The group will start to have monthly meetings every second Tuesday at 8 AM PST. Meeting duration should not be longer than 1.5 hours. Next meeting is scheduled for 18 May 2010.
Minutes 042610.docx (20 KB)
Structural Reliability Group - Call Agenda
attached is that slide which Tom McNeilan of Fugro sent to John Cushing which he replied, does a good job capturing the general concept we have for developing offshore wind turbine standards in the U.S.
General Concept - U.S. Offshore Wind Turbine Stds.ppt (211 KB)
AWEA Roadmapping - Offshore Group Leaders Meeting
Meeting Minutes
April 22, 2010
Conference Call meeting: 10:00M -11:00AM MT
Attendees: Gary Norton (DOE/Sentech), Robert Sheppard (Energo), Dan Dolan( MMI Engineering), Brian Naughton (DOE/ New West), Quing Yu (ABS), Walt Musial (NREL), Beverly Cisneros (NREL)
Quing Yu in for Lars. Lars was not present but was going to try and call in.
• Walt gave a summary of larger group status and said the path was clear to start writing the individual group standards without conflicts with the larger group.
• Each of the 3 groups gave summaries.
o Group 1- Structural – Dan Dolan gave a briefing and set up a group 1 meeting conference call next Tuesday at 12PM MT (11am PT).
o Group 3- Robert Sheppard – Robert has submitted and outline and is ready make writing assignments.
o Group 2- Gary has enlisted Brian Naughton to help keep up with the work load. They suggested a draft outline will be ready for Group 2 in two weeks and will be circulated to all groups for comment prior to May 27. Gary Norton is working with Laurie Medley & John Cushing at MMS.
• For the May 27th meeting we need to have and outline and bullet points ready
o Walt will prepare a presentation for plenary session. He will ask group leaders for input prior to the meeting.
o There will be three breakouts for offshore
o Walt will coordinate with Sandy and John Dunlop for three breakout rooms for the offshore group.
o Offshore will meet first as a whole group in one of the breakout rooms and then break into three separate working groups.
• Recruitments: All groups should assess their membership and make sure they have a diverse mix of participants.
o Walt will assist group leaders with recruitments of people from the wind industry, as needed.
o Group leaders are free to make their own recruitments to balance their teams.
o Specifically, we need developers, EPC contractors, and OEM turbine manufacturers (e.g. GE, Vestas, Siemens)
o Beverly and Walt should be kept informed about all roster updates.
• Roles and responsibilities document was circulated by Walt and was generally approved.
o Recruitment was added to the role of group leader
o The group agreed that Lars could not be expected to be secretary for all three groups.
o Each Group leader will appoint a secretary to manage documents and editorial changes.
• Get communication going within the Sub-Groups
• We need to develop a process for receiving, archiving, and reviewing documents prior to meetings.
o Walt will research ANSI requirements as they pertain to AWEA guidelines
o The group will seek to adopt a reasonable method used by an existing organization to guide the review process and document control system.
o We will appoint a liaison to make sure that offshore documents are aligned with the other documents being produced.
• Gary pointed out that we need a commonality of Terms/ Definitions
o Possibly use IEC definitions?
o APC & IEC – Terminology conflicts
o Sub-groups to collect terms and definitions for comparison and review.
• Set-up monthly meeting of all the sub-group leaders to touch base on what is being done.
• Set up monthly calls for 1st Thursday of each month to start at 9:00AM MT.
DRAFT-roles and responsibilites v2.doc (30 KB)
Minutes April 22 2010.docx (22.2 KB)
Meeting Minutes
US Wind Energy Structures Committee
Purpose: Development of Design & Permitting Guidelines
Date: 3/11/2009
Attendance
20 people in attendance.
Attendance (Mar 11) FirstName LastName Stakeholder represented
X Lisa Brasche Academia
? Brad Clark Academia
? Delong Zuo Academia
? Richard Flay Academia
? Case van Dam Academia
excused Ted Stathopoulos Academia
excused DV Griffiths Academia
excused Lance Manuel Academia
X Brian Kramak Certification Body
X Kevin Smith Certification Body
X Rolando Vega Certification Body
X Mike Cronin Certification Body
X Craig Moller Consultant
X Shelton Stringer Consultant
X David Brinker Consultant
X Mark Molouf Consultant
? Matthew Chase Consultant
X Jim Lockwood Consultant
? Jon Galsworthy Consultant
? Chris Martin Consultant/Designer
? Allan Henderson Consultant/Designer
X Nestor Agbayani Consultant/Designer
excused Joel Bahma Consultant/Designer
? Shu-Jin Fang Consultant/Designer
X Tomas Vasquez Consultant/Designer
excused Joe Burns Consultant/Designer
X Tom Warchol Consultant/Designer
X Brian Reese Consultant/Professional Society
excused John Ericksen Consultant/Professional Society
X Jomaa Ben-Hassine Consultant/Professional Society
? Jerry Crescenti Developer
excused Albert Fisas Camañes Manufacturer
excused Andrew Golder Manufacturer
excused Bill Holley Manufacturer
X Thomas Korzeniewski Manufacturer
X Steve Owens Manufacturer
? Colwyn Sayers Manufacturer
X Emil Moroz Manufacturer
X Larry Cercone Manufacturer (CC)
excused Eckart Bodenbach Manufacturer(CC)
? Sandy Butterfield Manufacturer
excused Jim Rossberg Professional Society
? John Segna Professional Society
? John Dunlop Professional Society
? Mike Robison Research Laboratory
? Corrie Christol Research Laboratory
? Beverly Cisneros Research Laboratory
excused Paul Veers Research Laboratory
X Allan Jeary
Agenda
-
Welcome & Attendance (by Rolando Vega) ~ 5 min total ** Rule: To speak always say your name first -
Review/approval of comments against minutes from 02/11 meeting
(by Brian Kramak) ~ 4 min total
3. Guide outline introduction and opening for Subgroup’s feedback ~10 min total
**** Original Suggested Outline to Leaders:
1 Introduction 2
2 Permitting and Design Process 2
3 Environmental Loads and Considerations 4
4 Design Criteria (Joint between Tower & Foundation) 4
5 Materials (Joint between Tower & Foundation) 2
6 Steel Design 8
6.1 Tower Design
6.2 Foundation Design
7 Concrete Design 6
7.1 Tower Design
7.2 Foundation Design
8 Anchorage and bolts 3
9 Fabrication and Installation 1
10 Inspection and Structural Health Monitoring 2
11 References 2
36 page Guideline
alternative outline on next page
**** Received Feedback for Suggested Outline:
1 Introduction 2
2 Principal Elements of Permitting, Design and Quality Assurance 2
3 External Conditions and Loads 4
4 Materials 2
5 Superstructures 10
6 Foundations 13
7 Fabrication and Installation 1
8 Inspection and Structural Health Monitoring 2
9 References 2
38 page Guideline
-
Subgroup leaders - Update on SubGroup activities and strategy ~ 4 min each a. Jomaa Ben-Hassine - WT Foundation Subgroup (need to leave early) b. Nestor Agbayani - WT Tower Subgroup c. Jim Lockwood - Inspection and Structural Health Monitoring d. Kevin Smith - Survey and outreach d. TBD - WT Safety Factors -
Introduction and discuss plan to use Sharepoint (by Brian Kramak) -
New items
Discussions
Meeting commenced via teleconference at 3:30pm EST. Rolando Vega opened meeting.
Roll call taken by Brian Kramak. 20 people in attendance. See list above.
Brian – requested comments to January meeting minutes. There were none, January meeting minutes are now official. February meeting minutes posted to sharepoint. As previously discussed, comment period for February minutes will be held open for one additional week to give members time to review these minutes.
Rolando – We have reviewed the structure of the offshore proposed guideline and its 11 sections. (see first outline in agenda above). We are considering this structure so our document follows the same basic structure as the offshore guideline.
Rolando – The two guidelines – on shore and off shore – can be simiarl, but we will modify as needed. Our target is about 40-60 pages for off shore and slightly smaller for us, about 36 pages. We are not looking to create a 20 page or 100+ page document. Please keep this in mind as the sub committees work on their individual sections.
Rolando – reviewed foundation groups document. See attached. Alternative structure is also listed above, to compare to off shore groups structure. .
Rolando – asked for updates from subgroups.
Jomaa – Foundation subgroup has had first call 3/10, using email mostly for other communications. Meeting weekly on Wednesdays.
Nestor – committee circulated an outline the previous Monday, not much feedback yet. Focus will be on fabricated steel tube towers for this version of guideline, including legacy lattice towers. Smaller scale not included. Concrete towers not included.
Brian – there are not many lattice towers in use for large wind turbines (>~60KW), are there?
Nestor – group decided lattice towers were important.
Jim Lockwood – mentioned that concrete towers are being used as pedestal for first section in steel tower design in some instances.
Nestor – OK with dropping lattice towers – up to group.
Rolando – asked for clarification, what is effort to add lattice towers? For now, focus on steel tube towers and add lattice if time allows at end. It may be required for ‘community wind’ (under about 250kw).
Jomaa – agreed focus should be on steel tubular towers for now, and to put in a place holder for lattice towers, to be added at a future date.
Nestor – agreed with approach. Back to outlines for overall document structure – the second version looks easier to use.
Rolando – reminded new members of the purpose and functions of our group, that we’re writing a guideline and what the purpose of the guideline is.
Jim Lockwood – discussed work of structural condition assessment subgroup, including structure of their section of guideline. They added 2 people to their subgroup and are meeting weekly.
Rolando – reminded this subcommittee to try to keep their recommendations to about 5 pages in length, in keeping with our target overall document size. If the document looked like it would grow beyond this, they would need to set some priorities and focus on just those items.
Steve Owens – it is important to keep guideline focused. Needs to be useful to approvers of projects, but should not cause additional concerns by adding scope.
Rolando – agreed. Summarized that team Jim Lockwood’s team should focus on current common requirements in already in this industry, not create new requirements.
Kevin Smith – gave update on survey group. No meeting yet. Recapped purpose for new people. Survey to be used to identify prospective users of guideline. Need to develop contact list, it is not yet finalized. John Dunlop agreed AWEA would support by distributing survey and collecting responses.
Rolando – recommended leveraging AWEA John Dunlop’s list of industry contacts to get the list together quicker. The team needs to set a number of people to get the survey to, and a date and get the survey out.
Brian – introduced sharepoint site. Need time next meeting to do live meeting, if we’re going to use it.
Nestor – believes emails work fine for distributing info and communicating.
Kevin Smith – their group is familiar with sharepoint and find it useful.
Jim Lockwood – OK with sharepoint as long as it is a segregated site. Brian confirmed that it was a dedicated/segregated site.
Rolando – proposed subfolders for each group, and that schedule will be in sharepoint and most up to date there.
Rolando – WT safety factors – several people have been asked to lead, but no volunteers. Need to set guideline for comparing eurocodes to US safety factors (ACSE 7). Tower and foundation groups will use IEC partial load safety factors. – IEC OK?
Steve Owens asked Nestor if this made sense, or if safety factors should be separate, not included in towers and foundations each.
Nestor – need to look into this.
Steve – many factors are component specific
Rolando – agreed that it made more sense to have a separate safety factors group, but no one has volunteered to lead it. For now, tower and foundations will address separately until we have better solution.
Rolando – asked if there were new items. There were none.
Conversation went back to the two main outlines.
Nestor – suggested that new, shorter (second one above) outline would be better.
Dave Brinker also thought the alternative (second) outline was better.
Jim Lockwood – agreed.
Rolando – asked for clarification for Nestor’s section – was ‘superstructure’ ok?
Dave Brinker – said this was important as wind industry definition of tower – usually meaning tubular steel – can be confused with communications industry definition where tower usually means lattice.
Rolando – asked group – is proposed alternative outline acceptable? There was no opposition.
For meeting in Dallas – many are not AWEA members, do we pay non-member rates/fees?
Rolando confirmed that there are many non AWEA members that would like to attend and that he would look into it.
Nestor pointed out that there are different levels or degrees of membership.
Rolando reminded everyone that there will be meeting May 27th, after the Dallas AWEA convention. (bk note – I will not be able to attend – previous commitment, out of country).
Rolando – set date for next meeting – Thurs 8 April, 330pm EST.
Move to close meeting – Steve Owens
Second – Jim Lockwood.
Meeting closed.
Submitted:
DRAFT
Brian Kramak
Secretary
US Wind Energy Structures Group
2010 03 11 Notes of Structural team meeting.doc (206 KB)
Dear AWEA/ASCE Structures Group and Survey and Outreach committee:
Please forward below message from AWEA to those people in your contacts list that can provide a reliable view of the industry’s need for our Guideline development. The message was sent to the following companies (if you have contacts in these companies, either abstain from sending them the invitation or give the contact information to John Dunlop for his review and further contact/recommendation, as necessary).
As I indicated in our last telecon, the Survey results will be used in the formulation of the Guide Introduction section, and to provide further direction to our Guide refinement.
See you all at the Wind Power Expo next week - May 27 @ 8am-3pm Room 161.
Best regards,
Rolando Vega
Wind Energy Structures
AWEA Large Wind Turbine Permiting Guidelines
ABS Consulting
List of Companies resquested to respond the survey:
AAER Inc.
Acciona Wind Energy USA, LLC
AES Wind Generation
Alliant Energy
BP Wind Energy
Cannon Power Corporation
Clipper Windpower, Inc.
DeWind, Co.
Duke Energy
E.ON Climate & Renewables North America
Edison Mission Energy - EME
EnXco
Eurus Energy America Corporation
Everpower Wind Holdings, Inc.
First Wind
Fuhrlaender NA
Gamesa Technology Corporation
GE Energy
Goldwind Science & Technology Co., Ltd.
Horizon Wind Energy
Iberdrola Renewables
Infigen Energy
Invenergy LLC
Iowa Lakes Electric Cooperative
John Deere Renewables, LLC
Midamerican Energy
Nature Energies, Inc.
NextEra Energy Resources
Noble Environmental Power, LLC
Northern Power Systems
PacifiCorp
Portland General Electric Company
Princeton Energy Resources International, LLC
Puget Sound Energy
REpower USA Corp
Shell WindEnergy Inc.
Siemens Wind Power A/S
Vestas Americas
Westar
MidAmerican Energy
Alliant
Willmar Municipal Utilities
PacificCorp
From: John Dunlop
Sent: Sunday, May 16, 2010 22:31
To: John Dunlop
Subject: AWEA Primary Contact or other AWEA Contact: Please Forward to Your Siting/Permitting Manager or Regulator
Siting or Permitting Manager (or other persons having responsibility),
We realize many of you are probably scrambling to get ready to come to WINDPOWER 2010 in Dallas, but we have a quick request. We estimate that your commitment to respond to this request will require less than 5 minutes.
One of the member services AWEA provides is to manage the development of AWEA, National and International wind energy conversion systems voluntary consensus standards. One of the AWEA current voluntary standards programs is to develop a Guideline (not a standard) to large wind turbine and wind farm permitting in the U.S. The Guideline will serve as a roadmap to guide firms in their efforts to meet the quality assurance requirements imposed by siting authorities, financial institutions and insurance companies.
The Project Team working on the guideline for permitting the structure of a wind turbine would like your assistance in assessing the requirements and impediments to permitting the structural design of wind turbine towers and foundations. Please take a few minutes to go to the survey listed below to provide a high-level view of your experience in dealing with permitting agencies. The information received in this survey is intended to help guide development of a Large Wind Turbine Structural Approval Guideline for all parties involved in design, review, and approval of the wind turbine, tower, and foundation elements.
This survey is open to local building inspectors, zoning boards, any other ‘authority having jurisdiction’ (AHJ), structural design engineers, project developers, project owners, equipment/tower manufacturers, and financier/investors who have experience in the local project construction approval process for large-scale wind turbines.
YOUR RESPONSE TO THE SURVEY IS 100% CONFIDENTIAL. In fact, though AWEA will compile the responses (and that information is only available in aggregate), we will have NO idea who responded to the survey. Responding to the survey is by invitation only – which means YOU. After you respond – and none of your identifying information is associated with your response – the only restriction is that you will not be allowed to respond a second time (as though you have any desire to skew the results!). Of course, we likewise assume you would not forward the survey to your friends and family with recommended responses. So, your response will be candid, private and VALUABLE.
Complete the survey at: surveymonkey.com/s/TQNX8MX
Thank you SO much for providing this useful information. While the survey will be open for a couple of weeks, your PROMPT response will provide useful input to the Structures Project Team for their deliberations in their meeting immediately following WINDPOWER in Dallas. In fact, that reminds me, you are welcome to sit in on the full Large Wind Turbine Permitting Guidelines Subcommittee meeting on Thursday (all day, May 27, right after WINDPOWER), as well as the Structures Project Team that will be meeting in conjunction with that meeting. AWEA standards meetings are open to all affected parties, so neither being an AWEA member nor attending WINDPOWER are required to participate in this meeting. Please let me know if you (or a colleague) would like to attend the meeting to ensure the facility can accommodate all affected parties.
We hope to see you at WINDPOWER and/or the Large Wind Turbine Permitting Guidelines Subcommittee meeting on Thursday.
John
Attached ppt slide General Concept U.S. Offshore Wind Turbine Stds.
General Concept - U.S. Offshore Wind Turbine Stds.ppt (211 KB)
Attached are the minutes of the meeting.
Minutes 051810 draft.doc (43.5 KB)
Attached agenda for the Roadmapping meeting 5-27-2010
AWEA Roadmapping Agenda meeting 100527.docx (13.4 KB)
Process
I summarized the process that is being pursued
• Subcommittee authorized by SCC to develop a guideline
• Subcommittee recommendations for guideline to be submitted to SCC for review
• Based on SCC approval, draft guidelines to be sent to “affected parties” for review and comment
• SCC reviews and addresses comments; they may send comments back to Subcommittee for review and recommendations
• Once comments are satisfactorily addressed, SCC may adopt guidelines
If individuals (not as members of the Subcommittee) recommend that AWEA engage in additional activities to develop a standard (alone or in partnership with other organizations, like ASCE and TIA), they need to submit recommendations to the AWEA SCC for consideration of the new work item. The SCC will be able to respond to the recommendations at the time the recommendations are made.
Communication Protocol
I consider the current process for communication to and among the groups to be awkward at the very best. AWEA’s planned improvement to AWEA’s group management processes will not be immediately useful to standards groups as, at first at least, the service will be available only to AWEA members. Therefore I conferred with the leaders of the project teams then recommended to the subcommittee that we (the standards program) establish our own independent communication system through electronic discussion groups. The recommendation was accepted. Based on the approval of the group (again, subject to ratification by you), I have set up four Yahoo Groups:
• Large Turbine Guidelines
• Large Turbine Structures
• Large Turbine Electrical
• Large Turbine Off Shore
I’ll be finalizing the groups and running them by you and project team leaders before populating them with project team members. The members WILL need to respond to the invitation from Yahoo in order to participate in the groups. We can do targeted follow up in some members neglect to respond.
I also recommend establishing a separate information dissemination group – not a Yahoo Group – that would provide information to persons interested generically in standards development (I’m suggesting it would be broader than just folks interested in the large turbine guidelines). Persons participating in the Yahoo Groups (which would allow members to join only with your approval and concurrence of the project team leaders) would actively engage in developing the guidelines; the dissemination group would just receive information (one way) from the AWEA standards program.
Next Meeting
Based on the progress made at the meeting and the schedule for completing project team draft documents, the group agreed to meet in conjunction with the Off Shore Workshop that will be held in October in Atlantic City, NJ. The group preferred meeting on Monday, October 4, prior to the Tuesday – Thursday workshop, rather than on Friday. I will check on the proposed timing of the Workshop – it may not begin until Tuesday afternoon – and we can develop a meeting schedule accordingly.
Adjournment
We adjourned at 3:30 p.m.
John Dunlop
Senior Project Engineer
American Wind Energy Association
JDunlop@AWEA.org email
612-377-3270 direct
612-590-5538 cell
www.awea.org
Goal => 90% Draft Guide by July 30th
Please let me know if there are any missing items in the agenda.
Telephone: 1-877-366-0711
Passcode: 22597183#
AGENDA for June 10, 2010:
1. Welcome & Attendance (by Rolando Vega & Brian
Kramak) ~ 5 min total
** Rule: Say your name before you speak
2. Update about AWEA WIND POWER Expo meeting in
Dallas May 27 (Rolando & Leonardo) ~ 10 min total
3. Review of comments against minutes from 05/13 &
05/27 meeting (by Brian Kramak) ~ 4 min total
4. Review of Draft Guide Structure, ~ 5 minutes
5. Subgroup leaders - Draft Finalization Update ~ 5
min each
a. Jomaa Ben-Hassine - WT Foundation Subgroup
b. Nestor Agbayani - WT Tower Subgroup
c. Jim Lockwood - WT Inspection and Structural
Health Monitoring
d. Kevin Smith - Survey and outreach
e. Chris Martin - Consistency and Compliance
Checklist
6. Other new issues ~10 min total
7. Next meeting @ AWEA NorthAmerican Offshore Wind
Conference in Atlantic City, NJ- October 4th @8:00am-4:00pm
From: Rolando Vega
Dear Wind Energy Industry Participant;
The American Wind Energy Association (AWEA) Standards Program (an Accredited Standards Developer under the American National Standards Institute) is developing a Large Turbine Permitting Guideline (Guideline) to help navigate the process for permitting large wind turbines in the U.S. The Structures Project Team of the Guideline Subcommittee requests your assistance by responding to a brief survey located here:
surveymonkey.com/s/TQNX8MX
This survey is expressly oriented toward local building inspectors, zoning boards, any other ‘authority having jurisdiction’ (AHJ), structural design engineers, project developers, project owners, equipment/tower manufacturers, and financier/investors who have a vested interest in the local project construction approval process for large-scale wind turbines.
The information received in this survey will help develop permitting guidelines for all parties involved in design, review, and approval of the wind turbine, tower, and foundation elements.
Note: This survey and related guideline will NOT result in new standards for the structural integrity of large turbines, but instead they will help develop a “roadmap” to large turbine construction permits. Further, the guideline will not address environmentally related permits.
You can access the survey via the web link provided. The survey inquires about your role in the industry to help offer perspectives for your responses, but YOUR RESPONSES WILL REMAIN ANONYMOUS. To minimize biasing the results, please do not forward the survey to other groups. Please contact me if you would like to recommend additional respondents. You will be allowed to complete the survey only once.
Thank you for your assistance.
On behalf of the Survey and Outreach Subgroup
AWEA Large Wind Turbine Permitting Guideline Subcommittee
John Dunlop, P.E.
Standards Program Manager
American Wind Energy Association
Minneapolis office
JDunlop@AWEA.org email
612-377-3270 direct
202-383-2500 main
612-590-5538 cell
1501 M St. NW, Suite 1000
Washington , DC 20005
www.awea.org
The meeting started with some open discussions and then presentations by each of the Subcommittee Lead.
Brief Status on Electrical by Tim Zgonena (UL)
o STP – Standards Technical Panel
o CSDS – Collaborative Standards Development System
o Fill the gap between standard national electrical code and local code
o Special STP task groups: Critical components, Enclosure ratings, Grounding, Fire suppression
o Ultimate Goals is to involve all the stakeholders such as AHJ’s, NFPA, NREL
o The focus is first Onshore and then offshore
o Electrical subcommittee Tom Buchal (Intertek)
Brief Status on Structures by Rolando Vega (ABS Consulting)
• Breakout in subcommittees
• Survey & outreach ( Kevin Smith, DNV)
1 Tower (Nestor Agboyami – MSK)
2 Foundations (Jomma Ben-Hasine – RES Americas)
3 Inspections and Structural HM ( Jim Lockwood – Aerosol)
4 Overall consistency and compliance checklist ( Chris Martin – Glenn Martin)
• Merger of AWEA and ASCE Wind Energy
1 Deadline for Guideline document - end of 2010
Brief Status on Offshore by Walter Musial (NREL)
• International Standard – National Standard – CS Rules
1 Three sub-groups A) Structural, B) Construction, C) Maintenance and Decommissioning
2 Website of NREL for archive and information sharing
3 Key Issues:
• Prescriptive vs performance based reliability
1 Inconsistency among international Vs API standards e.g. 50yr vs 100yr, hurricanes etc;
General discussion
o MOU between AWEA and ASEE
o Beverly w/NREL
o Offshore breakout floating systems
o Maine – may be the first one to go forward with floating structure
o Tom – Will there be reference to IEC standards?
o Electrical group to find linkage with European standard. Tom – Truly harmonization with European standard for wind turbine is going to be difficult
o 70% of UL’s 700 standards are ANSI standards
o Alternative to UL writing electrical standard is IEEE.
Overview meeting at 2:30
Update by Tim Zgonena on Electrical Subcommittee – 8 People attended
o Component, Enclosures
o No direct equivalency
o Worker working during installation of rotating machinery i.e. when turbine energized
o Seeking participation from large and small turbine manufactures
Update by Ronald Vega on Structural Subcommittee
o Debate on title document
o Deadline end of July – near 100% guide
o Agreement on 2 out 3 heated discussions
o Foundation draft by June 30th
o Tower – Appendix in guideline for documentations from manufacture
o Communication with AISC; discussions at University level
o Survey and outreach – response to surveys; keep track of requests sent out; compilation of comments into a public document
o Establish panel of experts – 10 experts still to be identified
Update by Walter Musial on Offshore Subcommittee – 18 people attended
• Metric system (VS Customary units)
1 Lacking memberships in subgroups (manufacturing, fabrication, installation)
2 Need for electrical engineer with offshore background
3 Structural Reliability – Dan Dolan (MMI)
• Struggling with strategic decisions
1 Leverage IEC and RP-2A
2 Specific assignments
3 Tangible progress in next 2 months
4 Gap for offshore electrical aspects
• Safety, Operation, Decommissioning – Robert Shepherd (Energo)
• Outline – Draft document by September
1 More participation from industry
• Manufacture, Fabrication, Installation – Chris
• Focus on recruiting, offshore large cable, cabling of substation
1 Currently no electrical expertise
2 No Class Society representation
3 Representation from offshore turbine manufacturer
John Dunlop’s ending comments
o AWEA will invite comments from public - Standards committee will resolve comments from public
o Respond to yahoo group invitation to become member of the group
o Document storage system – depository at NREL site
o Next meeting – during Offshore Wind Conference on October 5th-7th in Atlantic City. Full committee meeting on Monday, October 4th.
Kind Regards,
for DET NORSKE VERITAS (U.S.A.), INC.
Shashikant Sarada M.S., PMP
Structures Project Team Member:
THANK YOU for your commitment to help develop guidelines to permitting the structure of large wind turbines in the U.S. The structural guidelines will be combined with those from the Electrical Subsystem Project Team and the Off Shore Installations Project Team to form the guidelines that were requested of you by the AWEA Standards Coordinating Committee in 2009 May when they established the Large [Wind] Turbine Permitting Guidelines Subcommittee, headed by Sandy Butterfield. Sandy appointed Project Team Leaders to help develop the separate groups of guidelines: Rolando Vega, Structures; Tim Zgonena, Electrical; Walt Musial, Off Shore.
Each of the Project Teams has made significant progress in the past year. Sandy and the Project Team leaders intend to complete the first draft of the guidelines to submit to the Standards Coordinating Committee by the end of 2010.
To facilitate communication among members of the separate Project Teams, the leadership has decided to establish individual electronic groups for the three teams. All continuing discussions about the guidelines will take place within the electronic group. To participate in those discussions, you will need to join the e-group.
You will receive an invitation shortly to join the LgTurbineStructures electronic group from Yahoo Groups. Please accept the invitation to join the group. You will receive an automatic response that your membership in the electronic group was successful. After joining the group, you will only need to send e-mail notes to a single address, LgTurbineStructures@yahoogroups.com, to send messages to all other members of the group.
Again, thank you for helping to improve the process of permitting large wind turbines in America, ensuring high quality installations with lower permitting costs.
John
John Dunlop, P.E.
Senior Project Engineer
American Wind Energy Association
Minneapolis office
JDunlop@AWEA.org email
612-377-3270 direct
202-383-2500 main
612-590-5538 cell
1501 M St. NW, Suite 1000
Washington , DC 20005
www.awea.org
Wind: Powering a Cleaner, Stronger America
Dear Project Team for the Wind Turbine Structures Guide,
It was a pleasure to see you all last week at the WindPower Expo 2010. For those of you engaged in Subgroups activities, you have or will receive from your leader a copy of the Guide Draft that we discussed last week. This document is confidential to the Structures Group and the organization that you represent. Please do not distribute this document outside as it is a very quickly evolving document and people outside from our team discussions may jump to unnecessary conclusions too quickly. I have asked the leaders to provide you with specific guide/instructions as for the next steps to complete the near 100% Guide by July 30th. As for feedback specific to the Section/Chapter that your Subgroup is working please channel your feedback through your section leader who will provide me with a team consensus Section to input in the Master file that I maintain. As for feedback in any other section (other that your Subgroup), please feel free to send me your comments/feedback/recommendations as I am synthesizing this in the Master file.
If you are not actively participating in any Subgroup and would like to contribute from now on, please contact directly one of our leaders to get a copy of the draft. They will make this available to you and suggest ways for you to help.
• Tower Structures - Leader: Nestor Agbayani (nagbayani@sbcglobal.net)
• Foundation Structures - Leader: Jomaa Ben-Hasssine (jomaabenhassine@gmail.com)
• Inspection and Structural Health Monitoring - Leader: Jim Lockwood (jlockwood@aerosolutionsllc.com)
• Survey and Outreach - Leader: Kevin Smith (Kevin.J.Smith@dnv.com)
• Consistency and Compliance Checklist - Leader: Chris Martin (cmartin@marcelservices.com)
Some Subgroups may need/want to augment their team. If you have a qualified individual from other organization than your own, please ask them to send me their CV/resume. Qualified technical/experienced new members are welcome to join us if their role is under-represented in the Subgroup.
Kind regards,
Rolando
Rolando E. Vega, Ph.D., P.E.
Lead Engineer
Risk, Safety and Integrity Management
Global Renewable Energy Division
ABS Consulting
16855 Northchase Drive
Houston, TX 77060
W: 1-210- 495-5195 ext. 128
F: 1-210-495-5134
M: 1-210-632-0014
RoVega@absconsulting.com