Articles filed under Structural Failure from USA

Oil spill cleanup complete (Searsburg turbine)

When one of the 11 wind turbines at the Searsburg wind facility collapsed last month during wind gusts left over from Hurricane Ike, it spilled about 40 gallons of hydraulic oil and crankcase oil. The spill has since been cleaned up, the Agency of Natural Resources said. ...Tedesco said the turbines - blades, nacelle and tower - were designed to withstand winds of 100 miles an hour, and that the blade came off during a gust of wind measuring around 66 miles an hour on Sept. 15, tail winds from Hurricane Ike. He said the winds hadn't even been high enough to trigger one of the turbine's built-in safety features.
17 Oct 2008

Strong wind destroys Searsburg wind turbine

A blade on one of the Searsburg wind power turbines flew off during a recent windstorm, hitting the tower the turbine sits on and destroying it. It is unclear when, or even if, the nonfunctioning turbine will be back to full capacity. It was one of 11 that make up the Searsburg project owned by Green Mountain Power. "We had some really strong winds coming through," said GMP spokeswoman Dorothy Schnure. "A blade failed and struck the tower."
15 Oct 2008

Blade failure and load monitoring

Series blade failures have once again hit the wind power industry in America, with specialist service firms now working flat out to remedy defects keeping brand new wind farms offline. Defective manufacturing, however, is only one part of the blade story. Industry understanding of more fundamental issues, such as how best to measure loads and their impact, is far from complete, as the second part of this article reveals
1 Sep 2008

60% of turbines may be behind in critical maintenance

Frontier Pro Services of Banning, California conducted an informal survey of approximately 75 wind farm operators in the United States. Designed to assess the specific operation and maintenance service needs of wind energy operators, the survey reveals potentially serious threats to wind farms owing largely to the industry-wide shortage of qualified turbine technicians.
4 Aug 2008

Repair is in the air at Bluegrass Ridge; Wind turbine maker finds flaws in blades, calls for refurbishing

The Gentry County wind farm's turbines are undergoing refurbishment in a national retrofitting program initiated after manufacturer Suzlon Energy Limited found cracks in the blades of its S-88 wind turbines. ...The national retrofit program calls for the strengthening of 1,251 wind turbine blades, 930 of which had been installed by March, according to a press release. During repairs, Suzlon will employ temporary replacement blades to minimize the time wind turbines stand inoperable.
12 Jul 2008

Suzlon to replace defective equipment worth $25 million

In what implies a Rs.1 billion ($25 million) hit on its balance sheet for the current quarter, leading wind power equipment-maker Suzlon Energy will refit wind turbine blades for a project in the US, the company said Monday. “The company will do a retrofit programme to resolve blade-cracking issues discovered during the operations of some of its S88 turbines in the US,” the company informed the Bombay Stock Exchange Monday.
3 Mar 2008

Gear problems shut down windmills in Lackawanna

The windmills — officially called “Liberty 2.5 Megawatt wind turbines” — are the first of their kind to be used commercially. They brought national attention to Lackawanna for its creative reuse of an abandoned industrial site. The state-of-the-art turbines are so new that ClipperWind had anticipated a need for some tweaking here and there. But resolving the problem has been more difficult than expected. “This one’s a pain because you need a big crane,” acknowledged Bob Gates, ClipperWind senior vice president. The work is expected to take several months, Gates said. ...While the gear boxes are being replaced, Gates said a reinforcing bond will be applied to the fiberglass blades to prevent any major damage from tiny cracks that have developed on some.
13 Dec 2007

In hurricane, windmill blades could be danger for nuclear plant

The discussion on the proposed windmills on our coast seems to have ignored the serious potential of devastating damage that these structures could cause. Although they "would be designed to withstand hurricane-force winds" it is doubtful that they could be engineered to be completely secure in a Category 3-4 or 5 hurricane or a tornado. The blades of these turbines are designed to produce optimum benefits from the wind, which means to me that if they were detached in a hurricane or tornado, they would become lethal missiles that could slice through not only nearby homes, but would pose a grave danger to the nuclear power plant facilities as well.
11 Dec 2007

Wind Turbine Blade Update

It's one of the most visible sights in Madison County; one of the blades on the Fenner Wind Turbines broke in mid-November, and is still not fixed. ...They still don't know, what caused the blade to break; they say that this has happened at Fenner before, and hope to find out why once they're able to remove the blade.
7 Dec 2007

Wind Turbine Break ‘Isolated Occurence'

No word yet on what caused a blade to break apart on a wind turbine at the Waymart Wind Farm, Monday afternoon. Two blades on the three-bladed rotor remained intact, but one delaminated, meaning its fiberglass layers came apart. "This is on private property. No one was injured," says Steve Stengel, a spokesperson for FPL Energy which owns the wind farm. ...A total of 43 wind turbines line the Moosic Mountain Ridge. The 1.5 megawatt Waymart Wind Farm was completed in 2003.
6 Dec 2007

Worker's wind tower death detailed

Locked turbine blades and an unplugged circuit board may have been behind the sequence of events that buckled a wind turbine tower and sent a technician plunging to his death. Chadd Mitchell, 35, a technician for turbine manufacturer Siemens Power Generation, died Aug. 25 when a tower at the Klondike III wind farm in Sherman County collapsed. Mitchell was in the generator box, or nacelle, 231 feet from the ground when the incident occurred. ...About 2 p.m. the blades were set flat to the wind "in the full-power position," Winneguth said, which ran counter to safety procedures and proved fatal.
17 Nov 2007

Worker at Oregon wind farm killed

A wind turbine tower crashed to the ground at a wind farm east of The Dalles, killing one worker and injuring another, Sherman County authorities said. Sheriff's Deputy Geremy Shull said the collapse occurred Saturday afternoon. He declined to release the names of the workers, but said the man who died was from Goldendale, Wash. The injured worker was in serious condition at a hospital in The Dalles, Shull said.
26 Aug 2007

Time short for town’s turbines

SPRINGVIEW, Neb. - In this ranching village near the South Dakota border, there's a Turbine Avenue and a Turbine Mart convenience store and the annual Wind Turbine Days festival. But soon the two wind turbines that inspired those names - the first in Nebraska when they were erected in 1998 - may be coming down. Frequent breakdowns and increasingly expensive repairs are dooming the graceful structures.
23 May 2007

Bad gluing blamed for mishaps at wind farm

It all came down to glue. And how it was misapplied by workers. Spanish wind-energy company Gamesa said "insufficient and irregular distribution of glue" caused large pieces to break off seven turbine blades at the Allegheny Ridge Wind Farm near Lilly, Cambria County. No one was injured during the mishap in mid-March, but pieces of the blades flew more than 500 feet, according to residents.
7 May 2007

https://www.windaction.org/posts?location=USA&p=24&topic=Structural+Failure&type=Article
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