Update on #40 Vibratory Mode

62 topics in this forum

1. How can affected sensors be identified?

   By johng, June 11, 2008
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   • johng
   • June 11, 2008

2. How far back does the historical data go and has there ever been a period when no sensor dragging existed?

   By Julia Austin, December 11, 2008
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   • Julia Austin
   • December 11, 2008

3. Confirm that slides 8 and 10 (in the webinar presentation) show one, then both, then no bad sensors from top to bottom.

   By Julia Austin, December 11, 2008
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   • Julia Austin
   • December 11, 2008

4. Even though it may not be of interest to everyone, will the cause and modifications be documented?

   By Julia Austin, December 11, 2008
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   • Julia Austin
   • December 11, 2008

5. Will NRG issue refunds or eventually, replacements?

   By Julia Austin, December 11, 2008
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   • Julia Austin
   • December 11, 2008

6. Until you have new sensors to sell, what will you sell? Will NRG supply a different anemometer with tower orders until the problem is corrected?

   By Julia Austin, December 11, 2008
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   • Julia Austin
   • December 11, 2008

7. Could you discuss the onset of the vibratory mode and time it takes to present itself? Could any sensor be impacted at any time in its life?

   By Julia Austin, December 18, 2008
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   • Julia Austin
   • December 18, 2008

8. What is the root cause of the vibratory mode or mechanism that causes it to occur? Will the fix entail replacement of defective material or change to the manufacturing process?

   By Julia Austin, December 18, 2008
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   • Julia Austin
   • December 18, 2008

9. Is there any relationship between the vibratory mode and wind direction and/or boom orientation?

   By Julia Austin, December 18, 2008
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   • Julia Austin
   • December 18, 2008

10. Is there any relationship between vibratory mode and turbulence intensity?

    By Julia Austin, December 18, 2008
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    • Julia Austin
    • December 18, 2008

11. Can temperature be a factor in drag or vibratory mode?

    By Julia Austin, December 18, 2008
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    • Julia Austin
    • December 18, 2008

12. Could this problem be found in the non-calibrated #40 anemometers?

    By Julia Austin, December 18, 2008
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    • Julia Austin
    • December 18, 2008