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The control rod issue mentioned should not be blamed on Vattenfall, but on the manufacturer, Westinghouse. They have delivered faulty control rods to other Swedish nuclear power stations.

Peak oil is not an energy crisis. It is a liquid fuel crisis.
by Starvid (arvid.hallen at gmail.com) on Fri Jul 10th, 2009 at 06:25:56 PM EST
May well be the case that the original fault is born by Westinghouse, but the responsibility for managing that over the decades lies with Vattenfall.  Particularly known faults.

replacement parts are part of the normal operating budget, unless you're bound by, say, maximizing profit.  in this instance failure endangers the entire society.  we see the same story with older plants over and over, and there's always a management failure attached.

"Life shrinks or expands in proportion to one's courage." - Anaïs Nin

by Crazy Horse on Sat Jul 11th, 2009 at 10:45:15 AM EST
[ Parent ]
Control rods do not last for decades but for 5 years IIRC. These showed cracks after a much shorter time, and hence they were replaced. I don't see any shadow fall on Vattenfall.

Peak oil is not an energy crisis. It is a liquid fuel crisis.
by Starvid (arvid.hallen at gmail.com) on Sat Jul 11th, 2009 at 11:47:27 AM EST
[ Parent ]
SHould the operator not check what it installs?

*Lunatic*, n.
One whose delusions are out of fashion.
by DoDo on Sat Jul 11th, 2009 at 11:51:36 AM EST
[ Parent ]
That's what it did! Control rods are regularly checked. Mostly they work just as they're supposed to. But it seems Westinghouse made a faulty batch some years ago and hence these stories have been popping up during the last year.

Peak oil is not an energy crisis. It is a liquid fuel crisis.
by Starvid (arvid.hallen at gmail.com) on Sat Jul 11th, 2009 at 11:53:57 AM EST
[ Parent ]
I did some searching. It seems DW messed up the dates of the two incidents, the automatic shutdown system failure was this year. Even so, I couldn't track down any details on the control rod issue. I only found that there was a check on the control rods in three nuclear plants, including Ringhals, from October 2008, when the first one with cracks was discovered in Oskarshamn. But articles I found mentioned further faulty rod findings only in the other two, Forsmark and Oskarshamn.

So, if the admonishing of Ringhals has something to do with this, they must have been worse in something compared to the other two plants.

*Lunatic*, n.
One whose delusions are out of fashion.

by DoDo on Sat Jul 11th, 2009 at 02:45:22 PM EST
[ Parent ]

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