Library filed under Safety

£75m windfarm shuts down for repair

As the country continues to be battered by tornadoes and gale force winds, one of Norfolk’s biggest wind farms has been taken out of action again after a workman received an electric shock at the site. While 70mph winds swept across the county, the 30-turbine Scroby Sands wind farm, built off Great Yarmouth’s coast, is still paralysed by the power failure. The wind farm’s owners, E.ON UK, said the station was taken off line a few days after the accident to the worker. A spokesman for the company said: “He was working on a part of the cable that was dead and got a flash burn.”
9 Dec 2006

Gusts Topple Over Wind Turbine

AMES, Iowa -- Wind turbines generate power, but one was rendered powerless when it was knocked over by wind Friday. Nearly 800 MidAmerican Energy customers were without power on Friday morning in Wright County and school administrators had to cancel classes. There was a flicker of lights before the 100-foot tower supporting a wind turbine came crashing to the ground.
8 Dec 2006

Powerful Wind Storm Damages Wind Turbine

(Pavilion, NY, December 4, 2006) - - Recent gusts were powerful enough to break off the blades of a wind turbine in Genesee County. News 4's Al Vaughters reports the property owner is still picking up the pieces in Pavilion. Steve Rigoni said, "Well, the blade has got to come from Minnesota, so it'll be four or five days before they get here." This is all that's left of Steve Rigoni's wind turbine: three busted-up fiberglass blades and a 140-foot tower. The turbine has been blowing away Steve's electric bills, but Friday's wind storm was just too much.
4 Dec 2006

Powerful Wind Storm Damages Wind Turbine

Recent gusts were powerful enough to break off the blades of a wind turbine in Genesee County. News 4's Al Vaughters reports the property owner is still picking up the pieces in Pavilion. Steve Rigoni said, "Well, the blade has got to come from Minnesota, so it'll be four or five days before they get here." This is all that's left of Steve Rigoni's wind turbine: three busted-up fiberglass blades and a 140-foot tower.
4 Dec 2006

Wind turbine ‘aircraft threat’

Aircraft could be put in danger by a giant wind turbine set to be built near Sheffield airport, it was claimed today. Worried aviation bosses fear the 270ft high structure, with 90ft blades, could potentially lead to a disaster near Sheffield Parkway. Peel Airports says the turbine, near the approach funnel for the runway, would “constitute a serious obstacle to the safe operation of aircraft”.
27 Nov 2006

Toppled turbine raises concerns

Hikers on Black Mountain reached the fire tower at the summit earlier this month to find a 60-foot wind turbine lying in the snow. Justin Kerner of Clifton Park said it looked like a tree fell on one of the wires that secured the tower and then the turbine fell over. The State Police own the turbine. Spokeswoman Maureen Tuffey said it fell because a guy wire gave way when a bolt sheered off. She said it might be spring before the turbine is fixed. Black Mountain is in Washington County and the view from the top takes in Lake George and mountains in New York and Vermont.
20 Nov 2006

Wind turbine decision delayed further

Innovative proposals to install wind turbines in Cramlington face growing opposition from Newcastle Airport. Blyth Valley Council is considering a second planning application from Aesica Pharmaceuticals to put up the two turbines at its plant in Shotton Lane. Although councillors are keen to bring renewable energy sources into the borough and uphold its recognition as a Centre of Excellence, they are concerned about the airport’s objections that the turbines could jeopardise safety by effecting radar systems.
16 Nov 2006

Wind tower may alter flights

LYNN - Construction of a 397-foot wind turbine tower proposed for the city’s waterfront could necessitate minor changes in flight patterns around Logan International Airport. The tower’s tip would penetrate 83 feet into airspace designated for takeoffs and landings around Logan. Water and Sewer Commission officials have asked federal officials to consider an adjustment in landing guidelines for Logan aimed at steering aircraft around the tower. That request requires a review as detailed as any required for the turbine before its construction is approved. Federal aviation authorities will not be the only contributors to the review.
16 Nov 2006

Wind farm safety plea

Wind farms are on the increase, and this is seen by many as good news for the environment. However, an increasing number of riders are becoming concerned about the effects this could have on their horses. In response, the British Horse Society (BHS) has fired up its wind farm campaign. It’s keen to fly the flag for renewable energy, but wants to make sure horses and riders are not put at risk from the huge turbines.
15 Nov 2006

Windfarm plans thrown out

At a meeting on Tuesday, planning chiefs said the determined campaign by protestors from the Eakring Turbine Action Group and Bilsthorpe Residents Against Turbines played a key part in their decision. But it also emerged that objections from the Ministry of Defence (MOD) about a possible impact on radar services for civilian and military flights had been crucial in the decision to throw out the plans.
8 Nov 2006

College reduces size, changes location of proposed energy turbine

Michael Gross, communications director for Cape Cod Community College, admits he was surprised when the Federal Aviation Administration had concerns about the original campus location of a proposed wind turbine. “I never noticed it until we got the determination,” he said, “ and then I must have seen five airplanes come over the Burger King the next week.” Responding to the FAA, the tower’s sponsor, the Massachusetts Technology Collaborative, and college officials are looking at a new site just past the college’s service entrance on Route 132 in West Barnstable. The change is part of the agenda for a community meeting Thursday at 7 p.m. in Grossman Upper Commons at the college.
7 Nov 2006

Turbines proposals are thrown out

Plans for a wind farm in Nottinghamshire have been rejected. Developers wanted to install seven wind turbines measuring about 110ft (33.5m) high, near Eakring and Bilsthorpe. It was claimed they would provide green energy for hundreds of houses. But people living in the area said they would be a blot on the landscape. On Tuesday Newark and Sherwood Councillors unanimously rejected the scheme at a meeting attended by about 150 protesters.
7 Nov 2006

Airport says turbines could confuse radar

Aircraft safety fears could make a drugs group drop a plan to use wind power to cut energy costs and help protect 165 jobs at its Northumberland factory. Bosses at Aesica Pharmaceuticals want to erect two wind turbines next to their plant in Cramlington in an effort to cut its £407,000-a-year electricity bill by about 40%.
6 Nov 2006

Wind industry confident turbines, radar can coexist

Wind power advocates see a series of recent approvals for major wind farms as proof that the burgeoning industry’s growth will not be stunted by U.S. Department of Defense concerns that turbines can interfere with radar. However, additional scrutiny brought on by a defense department report may prolong the approval process of wind farms, said Laurie Jodziewicz of the American Wind Energy Association, an advocate group for the U.S. wind power industry.
6 Nov 2006

Protecting wind turbines from lightning

Electrical power gained from the wind is becoming a well-established technique of alternative energy generation in many parts of the world. The risk for structures being hit by lightning grows in relation with the height of the structure. MW-wind turbines reach heights of up to 150 m with their blades and are therefore extremely at risk.
1 Nov 2006

Permitting setbacks for wind turbines in California

Permitting_setback_requirements_thumb The California Wind Energy Collaborative was tasked to look at barriers to new wind energy development in the state. Planning commissions in the state have developed setback standards to reduce the risk of damage or injury from fragments resulting from wind turbine rotor failures. These standards are usually based on overall turbine height. With the trend toward larger capacity, taller towers and longer blades, modern wind turbines can be "squeezed out" of parcels thus reducing the economic viability of new wind developments. Current setback standards and their development are reviewed. The rotor failure probability is discussed and public domain statistics are reviewed. The available documentation shows rotor failure probability in the 1-in-1000 per turbine per year range. The analysis of the rotor fragment throw event is discussed in simplified terms. The range of the throw is highly dependent on the release velocity, which is a function of the turbine tip speed. The tip speed of wind turbines does not tend to increase with turbine size, thus offering possible relief to setback standards. Six analyses of rotor fragment risks were reviewed. The analyses do not particularly provide guidance for setbacks. Recommendations are made to use models from previous analyses for developing setbacks with an acceptable hazard probability.
1 Nov 2006
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