Group,
Here is the Canadian guideline that was requested during this morning’s call.
Regards
Dan
Canadian 61400 wind turbine design requirements.pdf (2.89 MB)
All,
It has been some time since our first meeting on that cold October day in Boulder and I have been remise at keeping everyone in the group up to date and the activity, albeit sparse, that has taken place this past winter. Recall that the main groups included, Offshore (Walt Musial), Electrical (Timothy Zgonena) and Structural (Rolando Vega) and that the Offshore group was further allocated into subgroups for: 1) Structural Reliability (which is the subject of this e-mail), 2) Manufacturing, Qualification Testing, Installation & Construction and 3) Safety of Equipment, Operation / Inspection, and Decommissioning.
We have developed the first draft of an outline for the structural design guideline which you will see attached here as an Excel spreadsheet. There has been similar content developed by the other groups and sub-groups and some discussion over the past several weeks on the consistency in approach amongst the various groups. There will be more discussion on the basic goals and architecture of the documents that are being developed by the groups, however, rather than wait for full resolution of these questions, I thought it best to begin at least some initial review of our outline. Please note the following when you review the spreadsheet;
• The main purpose of the document is to provide the MMS and state agencies with a regulatory basis for their licensing of offshore wind farms and would be adopted by the Code of Federal Regulations just as API RP2A is currently used for oil and gas.
• The secondary purpose of the document is to provide designers and engineers with guidance for designing OWTG support structures.
• The approach that I used was to identify the complete range of issues that a designer would need to address, regardless of whether or not these issues would be addressed directly within the document or through reference. Towards this end, the spreadsheet includes a column that identifies whether or not a section is new, taken from IEC, taken from API, etc.
• The means by which we use or refer to other codes and standards will require further discussion. However, it is clear that part of the function of this document will be to resolve inconsistencies and fill gaps that exist between any of the references (e.g., IEC and API) that we use. This in itself is a significant task.
• I have included some specific comments in the spreadsheet that provides more detail. You can add comments directly to the document this way or provide more general feedback in an e-mail.
Given that we are still discussing the overall approach, there may be some fundamental restructuring of this document. Therefore, please don’t spend a lot of time providing detailed comments and editorial suggestions. At this stage it would be most helpful to hear comments on the following basic topics:
• Given the secondary purpose of the document (above), do you see any specific technical areas that are missing or superfluous? What should be added or removed?
• What are your thoughts regarding the means by which we refer to or include other standards? Do we need to have a “complete” document that provides specific pointers to other guidelines or can we get by with a general guideline that makes a general reference to IEC and API, for example, and then let the designer work out the details?
• How would you prioritize these sections?
It would be very helpful to know if you have a specific interest in contributing to any of these sections. Again, we would hope that much of this material would be included through reference to other codes and standards, so there may be little to write for some sections, but we will still need member of the team to work out the references. It would be great if we could have your comments back by Monday the 22th.
Lastly, I would like to propose (it was actually Lars who suggested it) a monthly call to discuss the issues presented in this e-mail and the attached document and our progress toward the end goal. Would everyone support this? I would suggest that we hold a call during the middle of either the first or second week of each month, but perhaps we should hold our first call sooner. Please let me know your suggestions.
Group 1 – Structural Reliability
**Dan Dolan
Mort Andersen
John Cushing
Sid Falk
Jason Jonkman
Lance Manuel
Walt Musial
Marty Pollack
Frank Puskar
Lars Samuelsson
Arvind Shah
Ron Young
Regards
Dan Dolan, Principal
Also, please respond to the email invite (Accept, Decline) to know what kind of attendance we will have in the Structures Project Team.
Kind regards and thank you.
Rolando
Rolando E. Vega, Ph.D., P.E.
Technical Manager
Global Renewable Energy Division
ABS Consulting
16855 Northchase Drive
Houston, TX 77060
Tel.: 1-210- 495-5195 Mobile: 1-210-632-0014
RoVega@absconsulting.com
…Managing Risk, Improving Safety and Optimizing Integrity.
absconsulting.com
eagle.org
Meet ABS Consulting at
AWEA 2010 North American Offshore Wind Conference & Exhibition 5th – 7th October 2010 in Atlantic City, Booth 413
Oct.5th - AWEA-ASCE (Structures Meeting AGENDA).docx (13.4 KB)
Reconfirmation: Large Turbine Compliance Subcommittee to meet in Atlantic City, next Tuesday, October 5
Members of the AWEA Large Turbine Compliance Subcommittee, Project Teams and Working Groups (via bcc):
Please be assured that the meeting of the Subcommittee and all the subdivisions will occur on Tuesday, October 5, in Atlantic City. I understand that some of you may not have received that confirmation earlier, and I apologize. The “good” news is that we are very close to making significant improvements in the communication system we use at AWEA for our standards program, which will significantly improve communication capabilities.
The meeting be at the Atlantic City Convention Center (accenter.com/), room 404, and will last all day on Tuesday the 5th, 9 a.m. – 5 p.m. A copy of the meeting agenda is attached. Lunch will be on your own at nearby restaurants.
The meeting is being held the day before the AWEA Off Shore Conference and Exposition. You are welcome to attend the conference and use the designated lodging for conference attendees, but it is not necessary to register for the conference in order to attend the meeting. Conference and lodging information is available at offshorewindexpo.org/. Group rate rooms are still available (as of last night) at Caesar’s (the “overflow” facility) AND the word today is that the Sheraton has had a few cancellations, so you may be able to secure the conference group rate there as well.
Please drop me a quick line if you plan to be at the meeting or to request any further information.
John
PS: Please excuse the multiple messages.
Large Turbine Subcommittee Meeting 2010 October 05 agenda.docx (15.1 KB)
With this email I am trying to make sure (by bcc) that the AWEA/ASCE Structures Project Team receives email below from John Dunlop regarding our meeting next week in Atlantic City. More detailed agenda is attached (use this one for our meeting). Thank you if you have responded regarding attendance. Your confirmation was sent to our Secretary Leonardo Dueñas. If you have not responded please reply to this email before the meeting.
In an effort to give you an update:
1. Foundation Subgroup has submitted their complete draft of the section.
2. Tower Subgroup will send a revised version of the section this weekend.
3. External conditions and loads section will be added this weekend.
4. Latest draft of the document will be re-compiled this weekend.
5. Draft will be printed out and distributed to the Group the day of the meeting for review/comments.
Kind regards and Thank you.
Rolando
Rolando E. Vega, Ph.D., P.E.
Large Turbine Subcommittee Meeting 2010 October 05 agenda.docx (15.1 KB)
All, new procedure guidelines from AWEA. It would be good to read this before Tuesday’s meeting.
Regards
Dan
Dan/Brian/Robert
Here is the AWEA standards review process, which after the meeting today, will likely be adopted for these guidelines. Please send this out to your groups and expect that it will be discussed in the plenary in Atlantic City. I think the agenda will come to you from John Dunlop.
Walt Musial
National Renewable Energy Laboratory
AWEA Standards Development Procedures Final 2007 July.doc (116 KB)
Dear Structures Project Team,
This is an update about our meeting in Atlantic City. The meeting went very well with a total attendance of 14 members (several flying just for this meeting). Thank you all who participated and those who excused and now are looking how to contribute/catch-up.
This is the plan. I will soon receive meeting minutes from our Secretary - Leonardo Dueñas, and will forward to you all as soon as possible. Active participants may want to get in touch with your Subgroup leader. Leaders will very soon communicate with each of you in the different areas to tell you what the next steps are and how your support is needed.
One of the biggest conclusions from our meeting is that each respective Project Team thought it would be better to change the name from a Guideline - to - Recommended Practices. Pending final authorization by the AWEA Standards Development Board (SDB) this will be the name of our document. Also, the 3 Project Teams (Offshore, Land-based, Electrical) thought it would be better not to combine the 3 documents into a single volume, but to publish as separate documents.
Together with the Structures Project Team leaders and attending members in Atlantic City we have refined our review process for the Recommended Practices, and there are a number of new initiatives that will enhance the quality of our document and assure representation from a balanced committee. In the coming weeks will continue to unfold these initiatives, which include a new AWEA Connect web portal for internal and external communications, review process (including technical panel) and IEC document formatting.
In the mean time, please consider below our short- and mid-term goals to produce a final document.
Kind regards and Thank you.
Rolando
Roadmap.docx (63.1 KB)
lplkp