Library filed under Safety

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

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

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

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

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

Report details wind turbines’ risk

Clusters of high-standing wind turbines similar to one proposed off the South Shore could pose security risks by compromising radar systems for missile-defense and air-traffic control systems, a recent U.S. Department of Defense report concluded. The study, prepared at Congress’ request, draws on previous reviews of the effects of wind farms by the British Ministry of Defense, which found the turbines can have “a significant impact on the operational capabilities of military air defense radar systems,” as well as a U.S. Defense Department review at a turbine field in upstate Fenner, N.Y., in April and May.
31 Oct 2006

Risky Renewable Business

Five years ago, when developers applied for a federal permit to build the world’s largest offshore wind-energy project off the Cape Cod coast, a widely held presumption was that the project ought to go forward because wind power is inherently good and that Nantucket Sound was as good a place as any to begin the off-shore renewable energy movement. But the Cape Wind project hasn’t moved forward and remains mired in controversy as evidence piles up that its developers chose perhaps the worst location. So, instead of leading the renewable energy movement into the future, Cape Wind may be imperiling that very movement by ignoring legitimate and serious flaws in its project.
24 Oct 2006

Winds howling, but Thumb windmills still can’t catch a breeze

DTE Energy unveiled two ‘’solutions'’ Friday for turning windmills back on at Laker Elementary School, but neither option will work, school officials say. Laker leaders say DTE officials don’t seem to understand how windmills work and the coal-burning utility continues to drag its feet on the project. A DTE engineer is supposed to be back at the school on Monday to study the turbines.
14 Oct 2006
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