OK Then! Tepco admits it should have declared meltdowns at Fukushima plant much earlier
http://www.japantimes.co.jp/news/2016/02/24/national/tepco-admits-initial-assessments-fukushima-meltdowns-wrong/
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Nearly five years after the nations worst nuclear accident, Tokyo Electric Power Co. has admitted that its staff failed to follow damage assessment guidelines, according to which they should have reported the meltdowns almost immediately.
A Tepco spokesman on Wednesday said the companys Disaster Management Manual requires a reactor to be declared in meltdown if 5 percent or more of its fuel rods are determined to be damaged.
Tepco knew the extent of the damage early on. As of March 14, 2011, it estimated that 55 percent of the fuel rod assemblies of the reactor No. 1 and 25 percent of those at reactor No. 3 were damaged, based on the levels of radiation detected, Tepco spokesperson Yukako Handa told The Japan Times by phone.
On March 12, one day after the tsunami knocked out power and cooling facilities, Koichiro Nakamura, a senior official at the now-defunct Nuclear and Industry Safety Agency, told a news conference that a meltdown of a reactors core may be taking place at the Fukushima plant, given the radiation levels detected.
Nakamura was promptly removed from a PR position at the agency, sparking speculation of a government cover-up of something critical underway at the site.
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We knew!