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http://atominfo.ru/news5/e0979.htm

[anarxi]

Tepco hid record-level radiation data last July

JIJI

Tokyo Electric Power Co. did not tell the public until recently that massively high levels of radiation were found in groundwater collected last July at the Fukushima No. 1 nuclear plant, even though the utility was aware of the data that month, according to sources.

Tepco released the data on Feb. 6 showing that the groundwater contained a record 5 million becquerels per liter of radioactive strontium-90.

When Tepco reported the data to the Nuclear Regulation Authority last week, it initially claimed that it had only recently compiled the data, NRA sources said.

However, the embattled utility later corrected the timing, apparently showing that it had withheld the record readings, the sources said.

The withholding of the radiation data looks to be the latest in a long line of missteps for the utility, experts said.

Regulators are expected to demand a detailed explanation from Tepco, the sources said.

According to the NRA and other sources, Tepco first said it had detected 900,000 becquerels of beta ray-emitting radioactive materials, including strontium-90, from the groundwater last July.

When the firm later measured levels of strontium-90 alone, it found that the groundwater contained 5 million becquerels.....