|
12 October 2006 -- Swedish nuclear power plant, Forsmark 1, had a partial emergency shutdown yesterday, according to Vattenfall, the owner of the plant. During a planned test that involved turning off the external power supply, a partial emergency shutdown took place as expected. However, it was not possible to restart the reactor in accordance with normal procedures.
During a new attempt to restart the reactor in connection with work to trace the fault, the so-called v-chain, which introduces the control rods to shutdown the reactor, was tripped. An emergency shutdown was then initiated manually in accordance with instructions.
Work to trace the fault is underway. It is estimated that it will not be possible to restart the reactor until later today at the earliest.
In late July, Forsmark 1 was shutdown following an incident in the plant's safety system after a short-circuit caused a blackout. Two of four backup diesel generators failed to start automatically, revealing other faults in the power station's electrical system. The plant was cleared to restart operations on Sept. 28 by the The Swedish Nuclear Power Inspectorate (SKI).
A day after Forsmark 1's news, Vattenfall announced that Forsmark 2 will carry out another test of the welding seam in the reactor containment where three holes were discovered.
At a review of the documentation it was observed that a test protocol was missing for the said welding seam. The company which carried out the testing in the reactor containment guarantees that testing of the welding seam has been carried out, but that the documentation was lacking.
Forsmark 2 has now decided not to restart until after renewed testing of the welding seam has been carried out.
| 
Articles 
| View all PennWell sites | View all PennWell events
Add RSS Feed
