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NextEra report: Crack in blade caused turbine collapse in June

Jeff Rice is a reporter for the Journal-Advocate|Jeff Rice is a reporter for the Journal-Advocate|August 30, 2022
OklahomaSafetyStructural Failure

A crack in a blade on a Niyol Wind Farm turbine led to the June collapse of the turbine’s tower. Tricia Hale, director of renewable development for NextEra Energy, which owns Niyol, told the Logan County Commissioners Tuesday morning that the crack caused the blade to strike the tower, collapsing the tower and sending the turbine plummeting to the ground.


A crack in a blade on a Niyol Wind Farm turbine led to the June collapse of the turbine’s tower.

Tricia Hale, director of renewable development for NextEra Energy, which owns Niyol, told the Logan County Commissioners Tuesday morning that the crack caused the blade to strike the tower, collapsing the tower and sending the turbine plummeting to the ground.

Hale said nearly all of the tower fell within the base zone, although some small debris was found as much as 500 feet away.

Chris Carmona, NextEra’s regional general manager, said it was the fourth such blade failure in the U.S., all of which are on turbines built by General Electric. Carmona said GE does 24-hour monitoring of all of its turbines and it has isolated certain data patterns from those four turbines in the minutes before the failure. That data has since been fed into GE’s monitoring system, Carmona said, and if that same pattern begins to appear again, NextEra will be immediately notified so it can shut the turbine down.

The blades are manufactured by L M Wind Power, a ... more [truncated due to possible copyright]

     

A crack in a blade on a Niyol Wind Farm turbine led to the June collapse of the turbine’s tower.

Tricia Hale, director of renewable development for NextEra Energy, which owns Niyol, told the Logan County Commissioners Tuesday morning that the crack caused the blade to strike the tower, collapsing the tower and sending the turbine plummeting to the ground.

Hale said nearly all of the tower fell within the base zone, although some small debris was found as much as 500 feet away.

Chris Carmona, NextEra’s regional general manager, said it was the fourth such blade failure in the U.S., all of which are on turbines built by General Electric. Carmona said GE does 24-hour monitoring of all of its turbines and it has isolated certain data patterns from those four turbines in the minutes before the failure. That data has since been fed into GE’s monitoring system, Carmona said, and if that same pattern begins to appear again, NextEra will be immediately notified so it can shut the turbine down.

The blades are manufactured by L M Wind Power, a subsidiary of GE.

Hale said the failed blades are being examined by GE to determine what caused the cracks so the problem can be prevented in future production.

Asked whether the tower is going to be replaced, Hale said that hasn’t been determined yet. If the decision is to not replace the turbine, she said, the top four feet of concrete pedestal will be removed and the land remediated to at least its former condition, if not better.

In other business Tuesday, the commissioners:

  • Approved renewal of a malt beverage license for Lu’s Buffalo Stop, Inc., at Proctor;
  • Approved intergovernmental agreements with Buffalo (Merino) School District, Frenchman Groundwater Management District and the Town of Fleming to include questions from those entities on the Nov. 8 election ballot;
  • Approved continuation of the lease of Logan County Fairgrounds property for use by the Northeastern Junior College equine program.

Content truncated due to possible copyright. Use source link for full article.


Source:https://www.journal-advocate.…

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