Aug 20 2014
Fukushima nuclear workers and their supporters raise their fists in front of TEPCO headquarters during a rally in Tokyo on March 14, 2014. Toru Yamanaka/AFP/Getty Images
Last month, when the Tokyo Electric Power Company (TEPCO) announced it would move forward with its plan to construct an “ice wall” around the Fukushima Daiichi nuclear power plant’s failed reactors, it seemed like a step backwards. In June, the utility company in charge of decommissioning the plant—which was ravaged by a tsunami in March 2011—indicated that its initial attempt at installing a similar structure had flopped. Its pipes were apparently unable to freeze the ground, despite being filled with a -22°F chemical solution.
Similar techniques have been successfully used by engineers to build underwater car tunnels and mine shafts. But Dr. Dale Klein, an engineer and expert on nuclear policy, isn’t so sure it’ll produce the same results on a project of this magnitude. He says that although freezing the ground around reactors one through four might help corral the water that’s being used by TEPCO as a coolant, there’s little technical understanding of how the natural water sources surrounding the plant might respond. “As the water comes down the mountains towards the ocean, it’s not clear to me that [TEPCO] really know how it is going to move around that frozen barrier,” he said in an interview with VICE.
“But it has to go somewhere,” he continued. “It’s such a complicated site and problem, and I don’t know if they fully understand that yet.”
It’s worrying to hear doubt from someone like Klein, whose expertise ranges from politics to pedagogy. He was appointed to chair the US Nuclear Regulatory Commission by President Bush in 2006 and, after stepping down in 2009, he served as the organization’s commissioner in 2010. Now, in addition to being associate director of the Energy Institute at the University of Texas, he’s part of an international TEPCO advisory panel and visits Japan three to four times a year to work with officials as they struggle to helm a largely ad hoc clean-up effort.http://www.vice.com/en_ca/read/no-one-wants-you-to-know-how-bad-fukushima-might-still-be-666
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