日本東京電力公司表示,福島第一核電站 3號反應堆的燃料棒溶解程度,較過往評估的更嚴重,所有或接近所有的燃料棒已經溶解,並掉落到安全殼的地面,將令廢棄反應堆的工作更見困難。
根據東電 2011年11月最初的評估,溶解的燃料棒為
63%,但如今的新評估卻顯示,反應堆冷凍系統的停運時間,較之前估算早了超過
5小時,因此更多的核燃料掉落到安全殼。即使要清理,也得安排更安全。
但東電也稱,仍然希望可找到未溶解的燃料棒。
資料來源:
Meltdown
at Fukushima
reactor 3 worse than thought
Nuclear & Energy
Aug. 6, 2014
The operator of the crippled Fukushima
Daiichi nuclear plant says the damage to nuclear fuel in one of its reactors
may be worse than previously thought.
...
It says most of the fuel melted through the
reactor core and had dropped into the containment vessel by the following morning.
Aug 6, 2014
Tokyo
Electric Power Co. said Wednesday that its new estimate shows that all the fuel
rods in reactor 3 at the Fukushima
No. 1 nuclear power plant apparently melted down and fell onto the bottom of
the containment vessel.
In November 2011, the company had said it
believed only about 63 % of reactor 3's fuel core had melted.
...
August 07, 2014
The meltdown at the Fukushima Daiichi
nuclear power plant’s third reactor building was even worse than initially
believed, Tokyo Electric Power Co. (TEPCO) has announced.
In fact, the power company’s new appraisal of the Fukushima No. 3 reactor building shows that
all – or nearly all – of the fuel rods contained inside were melted, dropping
onto the floor of the containment vessel. If true, the news means the power
plant could be even tougher to decommission.
According to the Japan Times, TEPCO first
estimated back in November of 2011 that roughly 63 percent of the reactor’s
fuel rods had melted.
...
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
事隔數年才向外公佈,是專家不夠專業?過於自信?有意隱瞞?
但起碼今日的報導讓人日明白,為何不斷有放射物洩漏至海水。
其他參考:
8. 專家﹕福島魚獲四成不宜食