Tokyo Electric, the operator of the crippled Fukushima Daiichi nuclear power plant, has released a document during a lawsuit brought by over 40 shareholders which reveals the utilities acknowledgment that tsunami defenses at the plant were not adequate.
The internal document from 2008 noted that TEPCO executives had agreed that it would be “indispensable” to further build up coastal defenses for the plant in order to protect against a tsunami larger than had previously been recorded.
The utility has asserted that it could not have foreseen a tsunami of the size or magnitude that hit the plant in March 2011, that it had done everything it could to protect the nuclear power plant, took every available precaution against a tsunami, and has used that defense to protect itself from litigation.
This positioning by TEPCO has allowed the utility to argue that it is not responsible for the triple meltdown, but the internal document casts a definitive shadow over that claim.
Insiders from the nuclear industry in Japan have come forward since 2011 and claimed that TEPCO and the federal regulators ignored warnings of larger-than-expected tsunami in northern Japan for years. By ignoring these warnings, TEPCO delayed implementing countermeasures, including but not limited to increasing the height of protective wave barriers or removing the critical emergency backup diesel generators from the basements of the reactor buildings to higher ground.
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