Library filed under Structural Failure from Europe
According to the wind turbine manufacturer, a lightning strike could have been the reason why the rotor blade broke loose.
Several roads were closed Monday morning after a wind turbine in the Hahnweiler / VG Baumholder wind farm experienced a blade failure.
In the district of Uelzen, the blade of a wind turbine broke off during a storm and fell to the ground. An investgation is called for to determine the cause of the incident.
LAHR Germany - Early Friday morning at 2.30 am police reported a turbine fire on the Langenhard near Lahr. At the same time, the Integrated Control Center Ortenau received the message that a wind turbine was burning on the Langenhard. The fire had already been seen on the way to the equipment house of the Seelbach Fire Department, said Operations Manager Bernd Wagner. This was his second wind turbine fire. The first was in 2013 - also on the Langenhard. Efforts to extinguish the fire remain highly dangerous because of the height of the turbine and the falling debris. Therefore, the fire department has cordoned off a radius of 500 meters, according to Wagner. A police helicopter was also requested to take survey photos and look for possible forest fires. The fire is over but the work is still ongoing. The fire department is preparing for a long operation.
The wind turbine at Espinhaço de Cão, in the Aljezur area, is said to be well past its useful life and local fire chiefs have complained of the security of these machines and the threat they cause to the surrounding countryside.
"The windmill stands so it is above the two-sided farm building that housed the bull calves. The blades fell into the building, and fire spread in the stable and the hamlet in there, which we tried to control," said Lars Stensbjerg, who is the leader of fire and rescue MidtVest.
The situation developed dramatically as one of the wind turbine blades which was in flames, fell into a nearby farm building that housed between 30 and 40 bull calves in the stable buildings.
The analysis of almost 3,000 onshore wind turbines — the biggest study of its kind —warns that they will continue to generate electricity effectively for just 12 to 15 years. The wind energy industry and the Government base all their calculations on turbines enjoying a lifespan of 20 to 25 years.
A spectacular accident on Monday morning: In a field between Gau-Bickelheim and Wallertheim near the A61 motorway, the almost 55-meter-long and ten-ton blade of a wind turbine was broken off shortly before 8 o'clock and crashed onto an adjacent field. Persons were not injured in the incident, fire department and police secured the accident site.
A Kenersys K110 2.4 megawatt wind erected in 2012-2013 experienced a catastrophic blade failure. The blade was nearly 55-meters long. The turbine has a hub height of 145 meters and rotor diameter 109 meters.
Every time a drop of rain hits a wind turbine blade it contributes to a process that ends in small cracks being formed in the leading edge of the blade that eventually ruin the coating on the blade. The bigger the drop, the worse the damage, reports DR Nyheder.
Janet Nicholls said bits of fibreglass and a huge blade from the machine came crashing down into the field where five of her and her husband David's nine horses were grazing. The collapse was part of mass devastation across Cornwall. ..."Part of the machine still looks like it's going to fall off. It's been there four or five years.
A police spokesman reported that the fire initially broke out in the nacelle at around 3 o'clock on Friday morning and spread to the entire turbine. One blade of the wind turbine fell off after a short time while large parts of a second blade followed. Although the third blade did not burn, it threatened to fall after the nacelle was largely destroyed.
Baur calculates: Since 2016, there have been 16 fires, 15 blade and nacelle accidents and 4 tower damages involving wind turbines in Germany. With tons of equipment and high rotor speeds, there is a "high risk potential for people and buildings in the area".
One of the thirteen Gamesa 2.0 megawatt turbines at the Lynemouth wind farm near Ashington caught fire.
"We do not believe this fire was accidental. There are traces of break-ins at the access doors to the towers," according to what the public prosecutor in Valencia, Alex Perrin, was told.
The incident involved one of 5 turbines at the Ransonmoor wind farm located in the Fens of Cambridgeshire. The project consists of 2 Senvion MM82 and 3 Gamesa G80 wind turbines for a total nameplate capacity is 10.1 MW. The Gamesa turbines were placed in sevrice in 2007; the Senvion turbines followed a year later in 2008. The damaged turbine was built by Gamesa.
A wind turbine is being allowed to burn itself out after being struck by lightning. Fire crews are at the scene of the blaze at Ransonmoor wind farm, near Doddington, following the lightning strike in the early hours of the morning.
Footage shot by firefighters at the site shows the nacelle of the turbine burned out, one blade still burning, smoke damage at the base of the tower, and smoke billowing out into the Fenland countryside.
Many wind turbines are now 20 or even 25 years old. This increases the risk of serious accidents, of which some failures have already been reported. TÜV therefore demands the introduction of a mandatory inspection program in Germany.