nuclear-news

Highest radiation reading possible now stops workers entering Fukushima nuclear reactor 1

The latest reading was taken on the second floor of the No. 1 reactor building and will stop workers entering the area… the highest the Geiger counters used were capable of reading, indicating the level could have been higher,

…….Radioactive soil in pockets of areas outside the exclusion zone around the plant have reached the same level as in Chernobyl following a reactor explosion in the former Soviet Union, the report said….

Tepco Reports Second Deadly Radiation Reading at Fukushima Nuclear Plant, Bloomberg By Tsuyoshi Inajima and Kari Lundgren – Aug 2, 2011  Tokyo Electric Power Co. reported its second deadly radiation reading in as many days at its wrecked Fukushima nuclear plant north of Tokyo.

The utility known as Tepco said yesterday it detected 5 sieverts of radiation per hour in the No. 1 reactor building. On Aug. 1 in another area it recorded radiation of 10 sieverts per hour, enough to kill a person “within a few weeks” after a single exposure, according to theWorld Nuclear Association.

Radiation has impeded attempts to replace cooling systems to bring three melted reactors and four damaged spent fuel ponds under control after a tsunami on March 11 crippled the plant. The latest reading was taken on the second floor of the No. 1 reactor building and will stop workers entering the area.

“It’s probably the first of many more to come,” said Michael Friedlander, who spent 13 years operating nuclear power plants in the U.S., including the Crystal River Station in Florida. “Although I am not surprised, it concerns me greatly; the issue is the worker safety.”

The 10 sieverts of radiation detected on Aug. 1 outside reactor buildings was the highest the Geiger counters used were capable of reading, indicating the level could have been higher, Junichi Matsumoto, a general manager at the utility, said at a press conference.

Upper Limit

“Ten sieverts is the upper limit for many dosimeters and almost equal to the amount that killed workers at the JCO nuclear accident in 1999,” said Tomoko Murakami, a nuclear researcher at the Institute of Energy Economics, Japan.

Radiation Leaks

Tepco has been criticized by the government for withholding radiation data and other missteps that have worsened the crisis. About 160,000 people have been evacuated from areas stretching 20 kilometers and more from the plant.

On May 27, Chief Cabinet Secretary Yukio Edano said Tepco’s withholding radiation data was contributing to “public distrust.” The utility responded by saying it will publish in August the combined figures of radiation released into the atmosphere and in contaminated water. It hasn’t given a date for release of that information.

Radiation leaks from the Fukushima reactors have spread over 600 square kilometers, Tomio Kawata, a fellow at the Nuclear Waste Management Organization of Japan, said in a research report published on May 24 and given to the government.

Radioactive soil in pockets of areas outside the exclusion zone around the plant have reached the same level as in Chernobyl following a reactor explosion in the former Soviet Union, the report said….

http://www.bloomberg.com/news/2011-08-02/tepco-reports-second-deadly-radiation-reading-at-fukushima-plant.html

August 4, 2011 - Posted by Christina Macpherson | - Fukushima 2011