Library filed under Structural Failure
A blade on one of the Fenner (NY) wind turbines bent in November '07. News report shows the turbine is still out of commission as of December 7, 2007. Duration: 53 seconds
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.
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.
If Eco2’s application is approved at a planning meeting on Tuesday, four 410ft turbines – amongst the tallest in Britain – will be built on farmland overlooking the village GAG spokesman Bob Slater claims the incident in Scotland last month raises serious safety issues. A 200ft high turbine bent in half in 50mph winds, leaving its blades on the ground. Mr Slater also cites an example in Germany when a 10-metre fragment of rotor blade was sent spinning 200 metres through the air.
A blade on one of the turbines at the Waymart wind farm in Wayne County, PA shredded in high wind conditions. The 43 wind turbines along the Moosic Mountain Ridge went online in 2003. Duration: 16 seconds
...a Vestas V47 turbine, commissioned in November 2001, turned over at Scottish Power's Beinn an Tuirc ...the investigation process is ongoing and until the root cause of the incident is firmly established, the HSE has suggested that some precautionary measures are implemented on Vestas' V47 and V52 turbines, e.g. turbine max. speed pause to be adjusted from 25 m/s to 15 m/s and auto reset parameters reduced from max ten to max five.
A lightning strike on the Lowestoft wind turbine has resulted in it being out of action for the past four weeks, it emerged yesterday. Although it suffered damage in a storm during the summer it has now been discovered that it has suffered minor damage to one of the tips and has been shut down for safety reasons. The giant 120-metre landmark, known as Gulliver, was hit during the thunderstorm on June 8.
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.
A 63-metre tall wind turbine bent in two at Beinn an Tuirc Windfarm last Thursday. In what has been described as ‘a catastrophic failure’ of the turbine, the tower section has folded in the middle smashing the blades and nacelle into the hillside. It is thought by those in the industry that this is the first time a turbine tower has ever collapsed in the UK and Vestas Celtic, which manufactures towers at its nearby Kintyre factory and Scottish Power owners of the farm have launched an inquiry to find out what went wrong with the Vestas V47 turbine.
Photo of turbine failure at Fenner wind farm
One of the turbines at the Fenner Wind Farm hasn't been spinning since Wednesday night, because one of its blades has apparently been badly bent. ...A person who lives near the site says it sounded like a car crashing when the blade broke. There no word yet on when it'll be fixed.
This short GE Energy document explains the risk in the event of extreme wind conditions including hurricane or tornado and any mitigation. Note, the document acknowledges the risk of blade throws and tower collapse.
Engineers were working over the weekend to investigate the collapse of a wind turbine which led to three Scottish wind farms being shut. The 200ft turbine at the Beinn an Tuirc wind farm in Argyll and Bute "bent in half" during heavy winds last week. ScottishPower, which owns the 26-turbine facility, has closed it while representatives of the company that manufacture Vestas V47 machines investigate the fault. Dunlaw wind farm, a 26-turbine base near Lauder in the Borders, and the 20-turbine Hare Hill facility, close to New Cumnock, Ayrshire, were also shut down as a precautionary measure.
A SHETLAND wind farm will carry on operating despite the collapse of a turbine identical to the ones they are using. A 200 foot high Vestas V47 turbine was bent in half during storms at Scottish Power's 26 megawatt wind farm, at Beinn an Tuirc, in Argyll and Bute, last week. This site and two others owned by Scottish Power, in the Borders and Ayrshire, had their turbines shut down as a precaution until the cause of the problem is investigated fully by engineers. ..."The safest thing we can do unless otherwise advised by Vestas is to let these things work the way they are supposed to work. "Until we know what caused that turbine to fall over it would be almost dangerous to speculate."
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.
The wind energy industry has been growing at nearly 30 percent per year for the last decade. The heavy push for more green energy has created a gold rush of sorts...which means buyer beware ...
After the industry's recent boom years, wind power providers and experts are now concerned. The facilities may not be as reliable and durable as producers claim. Indeed, with thousands of mishaps, breakdowns and accidents having been reported in recent years, the difficulties seem to be mounting. Gearboxes hiding inside the casings perched on top of the towering masts have short shelf lives, often crapping out before even five years is up. In some cases, fractures form along the rotors, or even in the foundation, after only limited operation. Short circuits or overheated propellers have been known to cause fires. All this despite manufacturers' promises that the turbines would last at least 20 years.
Power-generating wind turbines will soon have to comply with tough new technical standards to ensure they can withstand typhoons, lightning strikes and other extreme weather conditions. Wind-power generation is a major pillar in the government's push to use alternative energy sources to fight global warming. In recent years, however, storms have caused extensive damage to many wind turbines. International standards drawn up in Europe are not sufficient to protect wind turbines from Japan's weather patterns, according to officials of the Nuclear and Industrial Safety Agency, an arm of the Ministry of Economy, Trade and Industry.
Rahall's spokeswoman, Allyson Groff, said last week that committee staff already were working on the points of greatest contention - especially the wind provisions. The bill as introduced "was a proposal," she said. "Nothing was set in stone. He wanted to be able to work with the Republicans on this."