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「OPPD announces official closing date for Fort Calhoun nuclear plant: Oct. 24」
(Omaha World-Herald 2016/8/31)
http://www.omaha.com/money/oppd-announces-official-closing-date-for-fort-calhoun-nuclear-plant/article_b8cf2e6f-ce65-56fb-9a0b-cb7ad80f8ce4.html
The Omaha Public Power District will permanently shut down its nuclear plant at Fort Calhoun on Oct. 24, according to a recent letter from the utility’s top executive to the U.S. Nuclear Regulatory Commission.
Correspondence obtained by The World-Herald and dated Aug. 25 was sent to officials at the NRC and the State of Nebraska.
“OPPD has completed analysis of the factors influencing the date for shutdown of (Fort Calhoun),” OPPD President and Chief Executive Tim Burke said in the letter.
The OPPD board unanimously approved a recommended shutdown at Fort Calhoun in June, but officials until now have been able to provide only a rough estimate of when the plant would cease operations.
A previous letter from Burke to the NRC dated June 24 indicated that the utility planned to shut down the plant “no later than December 31, 2016.”
With the shutdown date set, the plant’s decommissioning will kick into gear. That process includes the removal and transfer of nuclear fuel from the reactor into the spent fuel pool. That’s where the fuel rods will be placed for about 18 months while they burn off energy and cool to a level that permits transfer into a more permanent storage facility.
In all, the decommissioning process could take up to 60 years and will cost OPPD as much as $1.5 billion.
The plant employs about 700 people, many of whom will remain at the site while OPPD works through the decommissioning, which also includes the eventual cleanup of radioactive contaminants. The utility is putting together more than 50 separate plans related to decommissioning and is preparing for final shutdown of the Fort Calhoun reactor, plant spokesman Cris Averett said Tuesday.
Once all the nuclear fuel is removed from the reactor, the utility must then certify in writing that it has permanently ceased operations at the plant and that it is surrendering authority to operate the reactor there, NRC spokesman Victor Dricks said.
The 43-year-old, 478-megawatt-capacity nuclear plant at Fort Calhoun is the smallest such plant in the country, which explains in part why it has become financially untenable to continue operating. Far larger nuclear plants with the same or similar staffing levels as Fort Calhoun can better spread out costs. That’s especially true for those with two or three power-generating units. Fort Calhoun has just one.
OPPD’s lone nuclear facility also weathered troubled times in recent years.
The NRC came down hard on OPPD after it discovered hundreds of deficiencies in the wake of historic Missouri River flooding in 2011 that was accompanied by a costly electrical fire at the plant. The Fort Calhoun plant was forced to remain in a temporary shutdown mode for almost three years while OPPD sorted out the problems.
When the plant was cleared to reopen, day-to-day operations were handed over to Chicago-based Exelon Corp., with which OPPD signed a 20-year, $400 million contract.
Records obtained by The World-Herald show that OPPD has paid Exelon more than $93 million, or about $2 million a month, to run Fort Calhoun since September 2012.
Rebounding from that episode cost OPPD hundreds of millions of dollars. Meanwhile, natural gas prices have cratered, sending wholesale electricity prices down with them.
Today, power providers like OPPD can buy a megawatt-hour of energy for as little as $20. A World-Herald analysis of generation costs and output at Fort Calhoun indicate that it cost OPPD about $71 to create an equivalent amount of nuclear energy in 2015.
Contact the writer: 402-444-1534, cole.epley@owh.com
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* オマハ電力公社がフォート・カルフーン原発を10月24日に公式に閉鎖すると発表
* 原発解体作業が始まる。使用済み燃料は、移送が可能になるまで18ヶ月、使用済み燃料プールで保管。
* 解体の全工程には60年、費用は15億ドル(約1500億円)かかる。
* 従業員700名のうち多くは解体作業のために残る。
* 479メガワットの発電量で43歳のこの原発は州内で最も小さく、採算が合わないことが閉鎖の理由。
* 2011年のミズーリ川の大洪水で火災が発生、何百もの問題点が見つかり、事故以降一時的に閉鎖されていた。
* オマハ電力公社は、2012年以降、エクセロンに9300万ドルないし毎月約200万ドルを支払った。
* 一方では天然ガスの価格が下落し、電気料金も低下した。
* 今日では1メガワット時の電力を20ドルで買える。カルフーン原発で同電力量を発電するには、
2015年の試算で71ドルかかる。
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米国は今、まさに原発の廃炉ラッシュです。
フォート・カルフーン原発は、2011年のミズーリ川の氾濫で水没し、あわやメルトダウンかと騒がれた
あの原発です。
表向きの理由は発電コストで全く太刀打ちできないということですが、またミズーリ川が氾濫する可能性もあり、
安全性を全く保証できないのが本当の理由でしょう。
福島の惨状にショックを受け、大事故が起きないうちにと、どんどん原発が閉鎖されているのです。
この流れはもう誰にも止められないでしょう。
(関連情報)
「フォートカルフーン原子力発電所」 (ウィキペディア)
https://ja.wikipedia.org/wiki/%E3%83%95%E3%82%A9%E3%83%BC%E3%83%88%E3%82%AB%E3%83%AB%E3%83%95%E3%83%BC%E3%83%B3%E5%8E%9F%E5%AD%90%E5%8A%9B%E7%99%BA%E9%9B%BB%E6%89%80
「アメリカでメルトダウン、住民一万人避難」 (阿修羅・てんさい 2011/6/20)
http://www.asyura2.com/11/genpatu13/msg/167.html
「米電力大手エクセロン、採算悪化で原発2カ所閉鎖 (日経)」 (拙稿 2016/6/4)
http://www.asyura2.com/16/genpatu45/msg/774.html
「さらに5つの米原子炉が閉鎖、次はディアブロ・キャニオン原発か? (EcoWatch)」
(拙稿 2016/6/20)
http://www.asyura2.com/16/genpatu45/msg/877.html
「米加州最後の原発閉鎖へ 再生エネに転換 (東京新聞)」 (拙稿 2016/6/22)
http://www.asyura2.com/16/genpatu45/msg/888.html
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