Radiation in No. 1 reactor building “far exceeded expected levels” reaching 700 millisieverts per hour — 500 million becquerels released when opening entrance

Monday, May 9, 2011
By Paul Martin

ENENews.com
May 9th, 2011

Japan detects radiation up to 700 milliserverts at Fukushima nuke plant, Xinhua, May 9, 2011:

Tokyo Electric Power Co. (TEPCO) on Monday detected radiation levels in the building housing the faltering No. 1 reactor that far exceeded expected levels reaching as high as 700 millisieverts per hour, the utility firm said. [...]

An area with a double-digit millisievert level, let alone three-digit figures, is quite tough as a working environment. So we have to do the work by using some shielding,” Hidehiko Nishiyama, a spokesman for the Nuclear and Industrial Safety Agency, told a press conference. [...]

TEPCO during the press conference were unable to confirm whether the latest measures would be a success and could not say unequivocally whether Asia’s largest utility’s well-publicized schedule to stabilize the plant’s troubled reactors by October would be met. [...]

But the utility firm opened the main access points to the reactor and in doing do freely released 500 million becquerels of radioactive substances into the atmosphere, where it had gathered in the upper part of the reactor following a massive hydrogen explosion on March 12. [...]

The installation of such cooling equipment is likely to be hampered by high radiation, as the group found several radiation ” hot spots,” especially around pipes suspected to be clogged with highly radioactive material. [...]

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