Articles filed under Structural Failure from Michigan
Another blade break in Michigan.
Adam Greene, site supervisor for Deerfield, suggested that the Tribune reach out to Vestas. "I have no idea what's going on at this time," he said. ...Two blades in separate turbines similarly broke last October.
A 160-foot (50-meter) wind turbine blade broke in rural mid-Michigan, leaving it dangling above a field. The turbine is one of 75 GE 1.6-megawatt turbines located in Tuscola, Bay and Saginaw counties, Michigan. The project began commercial operation in 2012
Gauger said it’s been determined that the “old style” keyway pitch motor is “defective” and not able to handle the load that is being placed on them by longer blades. He said the motor is essentially trying to adjust itself so that there is less drag. “What happens is on the upswing or the downswing, it’s actually got some slack in there and that’s that clunking noise that people are hearing,” Gauger said.
“Unfortunately with the hazards because of the heavy machinery that's up there, there's not much that we could do until it falls down or wait until the point that it's safe and we can send somebody up there to make an inspection,” says Jay Deboer, the Deputy Chief for McBain Fire Department.
According to Minden City Fire Chief Zach Kramer, a blade snapped on the turbine sometime overnight Wednesday and it's hanging on, blowing debris across the area. The turbine is located right next to Sanilac County's snowmobile Trail No. 20, which is the main trail between Minden City and Deckerville.
A broken wind turbine off of Minden and Ridley roads has officials asking snowmobilers in the area to steer clear of a popular trail near the damaged turbine.
Fifty blades in the Deerfield Wind Energy Project were discovered to have the same issue as the two that broke and dangled from their towers near the intersection of Redman and Iseler roads ...Lack of adhesive was discovered to be the problem, and the defective blades are being repaired, said Jason Sterling, site construction manager of Vestas.
A single blade on two different wind turbines at wind farms bounded by Verona, Redman, Huron City and Kinde Roads were hanging by a literal thread this morning after having apparently snapped in half.
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 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.
Exelon Wind Generation says it has sent materials to an independent lab for analysis from the site where a 400-foot wind turbine fell.
The blade bent and wrapped around the nacelle of the turbine, flinging a 12-foot piece of blade about 120 yards from the base. DTE Energy regional manager Ron Chriss said GE, the manufacturer of the turbine, will be on site this coming week to make repairs and investigate the cause.
As crews continue to probe why a 400-foot wind turbine fell on a farm field, county planners talked publicly for the first time Wednesday about the incident and aftermath. County Building and Zoning Director Jeff Smith said he was out of town when the turbine fell, on Feb. 25, but went out to the site in Oliver Township on Feb. 29 with township officials.
“It gouged out a nice, big hole, about eight feet wide and three or four feet across." ...“A decision hasn’t been made yet on if the turbine will be replaced.” The company expects a “fact-finding” portion of the investigation to be completed in about a week, she said.
The strong winter storm that hit Michigan this week may be the cause of a wind turbine collapse on the east side of the state.
DTE Energy regional manager Ron Chriss said a blade on the wind turbine bent and wrapped around the head, or nacelle, of the turbine. “DTE Energy found one piece of blade approximately 12 feet long on the ground about 120 yards away from the base,” Chriss said.
A nearly 400-foot, 485,000-pound wind turbine has fallen down on a farm field at the site of the state’s first utility-scale wind project. Oliver Township Supervisor Larry Krohn said it came down at about 5:20 a.m. in the middle of the field. ...The fall marks the second incident in less than a week in which a wind turbine has failed.