Library filed under Structural Failure from USA
An investigation is under way following a crane collapse at NextEra Energy Resources LLC’s 200 MW Osborn Wind Energy Center, currently being built in Missouri. ...a three-blade rotor on one of the turbines fell down and sustained damage.
The company says that on Sunday, Oct. 2., the nacelle, hub and blades on a Siemens 3.0 MW direct-drive wind turbine inexplicably separated from the tower and fell to the ground.
The blades, hub and nacelle of one of eight Auwahi Wind turbines in the Kanaio area separated from the tower and fell to the ground Sunday, an official with the wind-power generation company said Monday.
MINCO, Okla. — A wind turbine near Minco was damaged in overnight storms. Part of one of the blades was broken off and was left dangling in the breeze Friday morning. Some debris landed on part of land owned by Fox 25 Storm Tracker Bobby Hines, Hines said. The Oklahoma Mesonet site in Minco saw a gust of nearly 60 miles an hour during those thunderstorms. Other damage was reported around Oklahoma in the form of downed tree limbs.
This year’s bill, The Military Operations Protection Act, was pitched by the senator as a way to make sure projects aren’t built that are incompatible with military flight paths. But critics have called it an attack on wind energy since it eliminates much of the state, including major portions of Eastern North Carolina, as potential sites for wind energy projects.
Because the turbines go so high into the air, they are prone to lightning strikes, but the structures are built with a special grounding system, so that if they are struck by lightning, the lightning goes into the ground without harm to the unit. But it doesn't always work, as seen by the damage to the turbine in Fairfield.
Kern County firefighters worked to keep a wind turbine fire from spreading to the dry grass below. The project was located in the Oak Creek area off Tehachapi-Willow Springs Road. Oak Creek resident Diana Palmer shared these photos of the effort.
The Oak Creek area east of Tehachapi saw a quick response from KCFD on June 25 after a wind turbine started a grass fire.
“We lease the land to them and have a power purchase agreement,” Bott said. “They’re paying us lease payments, and we're getting some tax on the personal property.” The town’s agreement doesn’t make allowances for shutdowns, however, so KWI is on the hook for paying Kingston regardless of whether the blades are spinning, he added.
Independence Wind Operations Manager, Benjamin Cleaves, has informed Kingston town officials that the Kingston Wind Independence (KWI) turbine has been shut down indefinitely due to a possible defect in the equipment.
Another of the GE 1.6 megawatt wind turbines at the Wildcat Wind facility in Tipton and Madison Counties, Indiana, experienced a catastrophic failure. Residents in the area have lost county the number of times this has happened at the site. Special thanks to the folks in Tipton County for sharing this photograph taken at the site.
The blades had to be removed as a result of a gear box failure. ...A fire wasn’t involved with the failure and that the black marks seen in the photos are actually grease.
The fire was on "the motor of a high windmill," and burning debris was falling to the ground, according to CalFire. As of 7:20 p.m., the windmill was almost completely burned on top.
Firefighters on scene said there wasn’t much they could do except let it burn out.
Another turbine was consumed by fire. This time at the Prairie Dog Wind Project in Shallowater, Texas. Firefighters were rightfully concerned that burning pieces from the turbine would cause a brush fire.
The latest problem? A fire at one of the plant’s three towers on Thursday, which left metal pipes scorched and melted. ...“Ivanpah has been such a mess,” says Adam Schultz, program manager at the UC Davis Energy Institute and former analyst for the CPUC.
Misaligned mirrors instead focused sunbeams on a different level of Unit 3, causing electrical cables to catch fire, San Bernardino County, California fire Capt. Mike McClintock said. David Knox, spokesman for plant operator NRG Energy, said it was too early to comment on the cause, which was under investigation.
The turbine exceeded designed rotation speeds — 14.4 rpm (revolutions per minute) -- and at that speed, blade tips are moving at about 200 mph, according to Exelon. It created an imbalance as blades picked up speed. At the time of collapse, rotation speeds reached 18 rpm, officials said. “At that high of an rpm, the thing just basically shook itself apart.”
After a hydraulic pump was shut off automatically due to high winds during a winter storm that day, an 'over speed event' occurred as the revolutions per minute of the blades far exceeded what the structure could handle.
On Wednesday, Exelon Wind Generation plans to explain what caused a wind turbine to fall in February ...Exelon officials are scheduled to present a “root cause analysis” Wednesday.