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(回答先: なぜか日本のマスコミが報じないスウェーデンの原発事故 投稿者 霧島夏樹 日時 2006 年 8 月 05 日 16:04:35)
スウェーデン原発，メルトダウン寸前の重大事故
バックアップ電源システムに欠陥 ２０分間起動せず
これ以上動かなければメルトダウンだった
”メルトダウンにならなかったのは単なる幸運”
欠陥発見後、さらに全１０原発中４つを緊急停止
他国の原発も同様の欠陥か ドイツはすでに調査開始
Sweden closes nuclear plants over safety fears
http://www.greenpeace.org/international/news/sweden-nuclear-closure-040806
04 August 2006Print Email this to a friend The Forsmark nuclear power plant. The plant suffered a serious safety incident and has been shut down for investigation.
Enlarge ImageSweden — Sweden has shut down four of its 10 nuclear plants after faults were discovered. A major fault was discovered after a serious incident at the Forsmark nuclear power station, a former director of the plant later said: "it was pure luck there wasn't a meltdown."
The closure of the Swedish plants has removed at a stroke roughly 20 percent of Sweden's electricity supply. Emergency power systems to the Forsmark plant failed for 20 minutes during a power cut. If power was not restored there could have been a major incident within hours.
A former director of the Forsmark plant said, "It was pure luck that there was not a meltdown. Since the electricity supply from the network didn't work as it should have, it could have been a catastrophe."
It appears that the fault in the backup power systems originates from new equipment installed in 1993. Not exactly reassuring that faulty equipment, vital for preventing a meltdown, went undetected for 13 years. The same equipment now uncovered to be faulty is also installed on other nuclear power plants in other countries. Germany is already investigating if the same fault affects its nuclear plants.
Power cuts
Nuclear industry propaganda has been saying that we need nuclear power to prevent future power cuts. But actually current nuclear plants are vulnerable to power cuts. All nuclear plants need power to control them. If mains power is lost, back up power is required to control the reactor. This power is supplied by back up generators but there have been many instances where these generators have been found to be faulty or susceptible to storms or floods. This has caused the temporary closures of nuclear plants in the US and elsewhere.
Cut the power to a single wind or solar farm and while they will stop generating electricity for the grid at least it won't threaten to melt down. Nuclear power relies on old, inefficient centralised power grids that are vulnerable to power cuts. Clean renewable energy sources help create more efficient decentralised power where it is generated much closer to where it is used.
When the going gets hot, nuclear plants stop running
The problems with Swedish nuclear plants come hot on the heels of problems with nuclear power plants in Europe due to the hot dry summer. Two nuclear plants in Germany recently had to reduce output due to the lack of sufficient water for cooling in rivers. If the drought continues many nuclear plants that rely on rivers for cooling water will have to reduce output or shut down.
Luckily Sweden plans to phase out its nuclear power plants in the coming years. Unfortunately a small minority of other European countries like France, Finland and the UK seem determined to rely on dangerous, dirty and expensive nuclear power that can fail dangerously during a power cut and be shut down by droughts.
Recent events expose industry lies about nuclear being a reliable energy source.
A combination of safe, renewable energy and energy efficiency measures are the only sane solution for power generation.
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