Siemens shuts down wind turbines worldwide after blade throw


Chris Clarke, ReWire
A few hours after one of its wind turbines threw a blade in the Imperial County desert town of Ocotillo, builder Siemens Energy announced it is shutting down all its turbines worldwide that use the same blade until their safety can be assessed.

The faulty wind turbine at Pattern Energy’s Ocotillo Express Wind facility threw a ten-ton blade late Wednesday night or early Thursday. No one was injured, despite the blade’s coming to rest atop a Jeep trail on public lands approximately 150 yards from the turbine.

In a statement provided to ReWire, Siemens Energy said it would be “curtailing” — slowing or shutting down — all its turbines that use the blade in question:

A B53 rotor blade of a SWT-2.3-108 wind turbine broke off near the blade root and fell to the ground at the Ocotillo Wind project in California. No one was injured.
Siemens Energy has immediately convened a team of experts at the site who will examine all facets of this incident, including the production, installation, commissioning and service of the blade, which is under warranty by Siemens Energy.
Siemens does not yet know the root cause of this incident and is working to determine if and how this is related to a recent similar incident in Iowa.
Today, Siemens is taking the step of curtailing all turbines with the B53 blade type globally. These turbines will remain curtailed until it can be determined they are not at risk of a similar malfunction.

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7 thoughts on “Siemens shuts down wind turbines worldwide after blade throw

  1. Look at the fray!
    Blade stress. It pulled and twisted apart. The question though, how far did it fly before landing? That I assume most land owners might want to know because who would want a 200 foot turbine blade flying 200 meters spearing your home? Wind Turbine Companies don’t want these stories released. Bad Press ruins sales.

  2. So much for no DIRECT health risks. I would definitely think a chunk of one of these huge blades flying through the air, is definitely a threat to human health.

  3. HMMMM! Nice to have the intel! Now we see what these blades are made of….seems to me they can be chain sawed off before they leave the truck they came in on!

  4. The real questions that should be asked is. Are these the same blades used on wolfe island iwt installation (they are siemens 2.3s)?And the second should be, did they follow their protocol over there?
    I can’t seem to find old generation charts on the ieso sight anymore?:(

  5. There are lots of Siemens 2.3 MW turbines in Chatham-Kent. The Kruger Port Alma phase 1 and 2 and also the Enbridge Talbot Wind project. None of them have been shut down.

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