July 2006 Incident
On 25 July 2006, one reactor was shut down after an electrical fault. According to the Swedish Nuclear Power Inspection authority SKI, the incident was rated 2 on the International Nuclear Event Scale. Initially it was rated 1 since two generators remained online. But once it was discovered that all four generators could have failed due to the same fault, the event was upgraded to 2.
At the request of the Swedish Government, IAEA launched an OSART mission to Forsmark.
Lars-Olov Höglund, a former construction chief at Vattenfall, claimed it was the most serious nuclear incident in the world since the Chernobyl disaster and it was pure luck that prevented a meltdown. Both the SKI and the safety chief of Forsmark power plant disagree with that opinion and state that the incident was serious but the description provided by Höglund was incorrect and there was no real risk of a meltdown. Höglund has personally been involved in a legal dispute with Forsmark Nuclear powerplant for several years in connection with his private business.
However, Kjell Olsson, a researcher at SKI, later stated in an informal discussion with school children that a meltdown technically could have developed from the incident. The agency later stated that the failing safety system proved to be linked together in a delicate, extremely serious way.
On March 14, 2011, Höglund commented that the Fukushima-disaster parallels the Forsmark incident, i.e. failing UPS system backup, and repeated his statement from 2007 that "only luck" prevented a meltdown at the Swedish plant.
Read more about this topic: Forsmark Nuclear Power Plant
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