廃炉のための技術は未だ「ない」

Masuda: It’s a very big challenge. Honestly speaking, I cannot say it’s possible.

廃炉のための技術は未だ「ない」

2015年4月8日 水曜日

NHK WORLD より Decommissioning Chief Speaks Out(http://www3.nhk.or.jp/nhkworld/english/news/features/201503312108.html)というビデオが公開されているのを昨夜見つけたので紹介したい。語っているのは増田尚宏さん。福島第一原発の廃炉・汚染水対策最高責任者である。

増田尚宏(ますだ なおひろ、1958年 – )さんは、2011年3月11日の東日本大震災では、福島第二原子力発電所所長として、現場指揮にあたった方。2014年4月1日より、東京電力常務執行役・福島第一廃炉推進カンパニープレジデント兼廃炉・汚染水対策最高責任者。(http://ja.wikipedia.org/wiki/増田尚宏より。)

増田さんはインタビューに答えて日本語で語っているが、NHK WORLD は英語になっていて、日本語を全部は聞き取れない。私の検索技術では NHK ‘Nuclear Watch’ transcript に対応する日本語の記事を見つけることができなかったので、以下に、エネルギーニュースが掲載している英語記事から引用させていただく。イギリスの新聞 Times からの引用のようである。(Published: April 1st, 2015 at 11:48 pm ET By ENENews http://enenews.com/times-worst-possible-result-revealed-fukushima-plant-chief-centuries-pass-before-humans-invent-deal-molten-fuel-videos)

Times: “The worst possible result” revealed at Fukushima — Plant Chief: Centuries may pass before humans find a way to deal with molten cores — Top Official: “We have no idea” what to do, “the technology simply doesn’t exist… I can’t say it’s possible” (VIDEOS)

NHK ‘Nuclear Watch’ transcript, Mar 31, 2015 (emphasis added):

NHK: The people trying to decommission the Fukushima Daiichi nuclear plant have been hit by setback after setback… and faced accusations of misconduct. It’s lost them a lot of public trust… [Naohiro Masuda, president of Tepco’s decommissioning company] revealed he’s not sure if he can comply with the government set plan [for] removing the fuel…

Naohiro Masuda, president of Tepco’s Fukushima Daiichi Decommissioning Company: We have no idea about the debris. We don’t know its shape or strength. We have to remove it remotely from 30 meters above, but we don’t have that kind of technology, it simply doesn’t exist… We still don’t know whether it’s possible to fill the reactor containers with water. We’ve found some cracks and holes in the three damaged container vessels, but we don’t know if we found them all. If it turns out there are other holes, we might have to look for some other way to remove the debris.

NHK: Asked [about the gov’t target to begin by 2020], his answer was surprisingly candid.

Masuda: It’s a very big challenge. Honestly speaking, I cannot say it’s possible.

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Related Posts(http://enenews.com/times-200-year-wait-problems-insurmountable)エネルギーニュース http://enenews.com/ ウェブサイトの関連記事リスト (March 29th, 2015付けCategory: Fukushima Daiichi)は以下の通り:

1.NHK: Officials admit it may be impossible to stop leaking at Fukushima reactors — Will be investigating ‘bottom of containment vessels’ for holes — Gov’t asking engineers from outside Japan for help with melted fuel (VIDEOS) April 30, 2014

2.Nuclear Expert: Water may NOT have stopped melted fuel from going down into concrete at Fukushima — I raised this issue years ago, but it’s too difficult for regulators to deal with (VIDEO) November 6, 2013

3.New images show all melted fuel is “gone” from Fukushima reactor — Experts: Molten core may have reached outer environment, can’t tell if fuel is still contained — Official: “We presume fuel still in containment vessel… but we need to check one day” (PHOTOS & VIDEO) March 20, 2015

4.Japanese Nuclear Expert: Melted reactor cores not in one piece at Fukushima, as gov’t claims — I think nuclear fuel scattered everywhere, stuck to walls — Chernobyl-like sarcophagus may be needed — Nothing has been done, by time they deal with this I’ll be long dead June 12, 2014

5.ABC Tours Fukushima Plant: This could go on for centuries, and some say problems can never be fixed; “Tepco admits it doesn’t know extent of meltdowns” — Official: We don’t know ‘real situation’ of the molten fuel, “nobody has seen it”; We need help from the world (VIDEO) February 19, 2015

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参考: 2014年7月にもNHK WORLD で同様の報道がなされている。以下は対応するユーチューブの資料より引用:

福島 メルトダウン燃料解決技術この世の何処にも無い  Fukushima:NoTechlogy Exist toSolveProblem! https://www.youtube.com/watch?v=JnD0SqkHdDE NHKが国際放送向けに放送。2014/07/02 に公開。 NHK Nuclear Watch: US View on Fukushima Daiichi, July 2, 2014 (at 2:00 in):

福島原発を訪問した米NRC高官「日本訪問中に、人々から何度も何度も、米国には解決­技術はないか?と聞かれた。現実は、[メルトダウンした核燃料]問題を、解決できる技­術が世界の何処にも存在しないのだ!」「新技術を開発し、リサーチしなければならない­。これには時間がかかるのだ。」 *Top U.S. Official: “The reality is, no technology exists anywhere to solve problem” of Fukushima’s melted fuel.

NHK: Experts say that one of the most difficult challenges of decommissioning the plant is removing fuel debris… And Magwood says that there is no magic wand to wipeout this problem. (HH注:wand は魔法の杖)

William Magwood, US Nuclear Regulatory Commission: I think people have to be realistic how difficult this is, how long it’s going to take. During my visit to Japan this week, people have asked me from time to time, “Are there technologies in the US that can help solve this problem?” The reality is there is no technology that exists anywhere to solve this problem.

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脚注 語義メモ:
decommission【他動詞】
1〈船・飛行機を〉退役させる. 2〈原子力発電所などを〉閉じる.
「decommission」を含む例文(Webloio辞書の例文より引用) :
It takes a very long time to decommission a nuclear power plant. 原子力発電所を閉じるには非常に長い年月がかかる。 Even if the nuclear reactor were shut down now, it would take a long time to decommission it safely. 今原発を停止させたとしても、安全に廃炉するには長い時間がかかる。<以上、引用終わり>

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