NHK...

Tokyo Electric Power Company says it has detected radioactive materials 10-million-times normal levels in water at the No.2 reactor complex of the Fukushima Daiichi nuclear plant.

The plant operator, known as TEPCO, says it measured 2.9-billion becquerels of radiation per one cubic centimeter of water from the basement of the turbine building attached to the Number 2 reactor.

The level of contamination is about 1,000 times that of the leaked water already found in the basements of the Number 1 and 3 reactor turbine buildings.

The company says the latest reading is 10-million times the usual radioactivity of water circulating within a normally operating reactor.
TEPCO says the radioactive materials include 2.9-billion becquerels of iodine-134, 13-million becquerels of iodine-131, and 2.3-million becquerels each for cesium 134 and 137.

These substances are emitted during nuclear fission inside a reactor core.

The company says the extremely contaminated water may stem from damaged fuel in the reactor, and are trying to determine how the leakage occurred.

University of Tokyo graduate school professor Naoto Sekimura says the leak may come from the suppression chamber of the Number 2 reactor, which is known to be damaged. The chamber is designed to contain overflows of radioactive substances from the reactor.

Sunday, March 27, 2011 13:44 +0900 (JST)



Radiation levels 40 percent higher than the yearly limit for the general public has been detected just over 30 kilometers from the Fukushima Daiichi power plant.

The Science Ministry says a reading of 1.4 millisieverts was taken on Wednesday morning in Namie Town northwest of the plant.

The government has not told residents outside the 30-kilometer radius of the plant to evacuate, or even to stay indoors.

Someone staying outdoors for 24-hours at that location would exceed the annual limit of one millisievert. The limit is based on a recommendation by the International Commission on Radiological Protection.

The science ministry obtained the reading after monitoring 10 locations outside the 30-kilometer zone, following reports that relatively high levels of radiation were found outside that area.

Radiation exerts now say the amount of radiation detected does not pose a health risk. But they advise residents in the area to stay alert for any possible rise in radiation levels, because the power plant is not likely to stop releasing radiation any time soon.

Sunday, March 27, 2011 08:53 +0900 (JST)