Library filed under Structural Failure

Three wind farms shut after 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.
12 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

The Dangers of Wind Power

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.
24 Aug 2007

Wind turbines to be made of tougher stuff

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.
2 Jul 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

Wind farm at a standstill

Whatever is causing turbine blades made at Gamesa Energy USA near Ebensburg to splinter should be known within weeks, a company representative said Wednesday. Meanwhile, the startup of the Allegheny Ridge Wind Farm - which will become Pennsylvania's largest wind farm - will be on hold until the blade investigation is completed, Ellen Lutz, director of development for Gamesa's Atlantic Region, said Wednesday.
25 Apr 2007

Dartmouth windmill toppled by storm

DARTMOUTH - One of the many casualties of this weekend's storm was a windmill installed by former state Rep. Mark A. Howland. Arthur Larrivee paid Mr. Howland $16,000 for a windmill and solar panel system for his home at 620 Tucker Road and received everything he asked for: two windmills atop 35-foot-high poles, four solar panels and electrical equipment to convert the power generated into electricity. But on Monday morning, he woke to find that the steel poles of one windmill had snapped clean off about 4 feet above the ground, leaving the windmill lying on the ground. "I honestly couldn't believe it," said Mr. Larrivee, a real estate broker and Republican activist. "It had to be a flaw in the piping."
19 Apr 2007

Problems at wind farm could derail acquisition

An Australian company that wants to buy a Cambria County wind farm might walk away if it's not determined what caused seven turbine blades to crack and large pieces of two blades to fly off. The problems at the Allegheny Ridge wind farm are a serious concern, said Neal Emmerton, regional asset manager for Sydney-based Babcock & Brown. Gamesa, the Spanish firm that developed the facility, has been paid, but the deal won't be final until the blade issues are resolved, he said.
5 Apr 2007

Trade association: ‘blade problems are rare’

Wind-energy experts say incidents such as the splintering of two blades and cracks in five others produced at Gamesa's Cambria Township factory are rare. The American Wind Energy Association views the problem as a fluke, an anomaly that turned up in a time-proven industry involving a highly respected company. "We haven't heard of anything like this before. There have been thousands of blades installed, and this is a first," said Christine Real-de-Azua, spokeswoman for the wind energy national trade association, based in Washington, D.C. "Offhand, this doesn't seem like a big issue. We haven't heard of any other problems."
24 Mar 2007

Turbine blades broken: Manufacturer Gamesa Corp. says wind farm plans on hold until solution is determined

The Allegheny Ridge Wind Farm's phase one startup has been put on hold because some of Gamesa's locally made blades are chipping apart. Gamesa officials, who met with Portage and Washington township officials Wednesday for the go-ahead on a second phase, said they found issues with seven blades after realizing two of them splintered on the towers. They had hoped to have the first phase online by the end of the month. "The structure of the blade was intact in most places ... it somehow split open and fell," said Alberto Gros Isla, the plant's manager. It wasn't the blades that fell; rather, it was a "thin fiberglass skin" that coated them, he said. One piece stretched the length of the 147-foot-blade, and another was at least 20 feet long, Gros Isla said.
22 Mar 2007

Gearbox fault halts wind turbines

Repair work is due to begin this week on a wind farm off the coast of Kent which has seen a third of its turbines grind to a halt since early December. Of the 36 turbines erected off Herne Bay - on the Kentish Flats - 12 have experienced gearbox problems. Four have been repaired but the others have been running at reduced efficiency pending a break in the weather. The Danish firm Vestas, which owns and maintains them, said the high failure rate was unusual.
29 Jan 2007

Wind turbine topples over: Question is why?

HIGASHIDORI, Aomori Prefecture–The industry ministry Wednesday said it is trying to determine what caused a 68-meter-high wind turbine to collapse earlier this week since strong winds apparently were not blowing at the time. The incident at the Iwaya Wind Farm in the Iwaya district of Higashidori in this northern prefecture is thought to have occurred late Monday, according to officials of Eurus Energy Holdings Corp., which manages the wind farm. While no one was injured, the incident resulted in temporary power outages to homes in the area because power lines were severed.
11 Jan 2007

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