Japan to issue gravest Fukushima nuclear warning in two years: agency
http://www.reuters.com/article/2013/08/21/us-japan-fukushima-severity-idUSBRE97K02B20130821

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    Related Video
 [image: 
Video]<http://www.reuters.com/article/video/idUSBRE97K02B20130821?videoId=253695543>
Contamination fears over Japan nuclear plant
leak<http://www.reuters.com/article/video/idUSBRE97K02B20130821?videoId=253695543>
Mon, Aug 19 2013

By Kentaro Hamada and James Topham

TOKYO | Tue Aug 20, 2013 11:29pm EDT

(Reuters) - Japan <http://www.reuters.com/places/japan> will dramatically
raise its warning about the severity of a toxic water leak at the Fukushima
nuclear plant, its nuclear watchdog said on Wednesday, its most serious
action since the plant was destroyed by an earthquake and tsunami in 2011.

The deepening crisis at the Fukushima plant will be upgraded from a level 1
"anomaly" to a level three "serious incident" on an international scale for
radiological releases, a spokesman for Japan's Nuclear Regulation Authority
(NRA) said.

That will mark the first time Japan has issued a warning on the
International Nuclear Event Scale (INES) since three reactor meltdowns
after the massive quake in March 2011.

Water still leaking from the plant is so contaminated that a person
standing close to it for an hour would receive five times the annual
recommended limit for nuclear workers in a year.

A maximum level 7 was declared at the battered plant after explosions led
to a loss of power and cooling two years ago, confirming Fukushima as the
worst nuclear accident since Chernobyl a quarter of a century earlier.

Contaminated water with dangerously high levels of radiation is leaking
from a storage tank at Fukushima, the plant's operator, Tokyo Electric
Power Co said on Tuesday. The leak was classified as an "anomaly" earlier
this week.

The NRA's impending assessment upgrade came in a document posted on the
agency's website on Wednesday, with formal adoption to follow a meeting
that is being held by the authority's commissioners, the NRA spokesman said
by telephone.

"Judging from the amount and the density of the radiation in the
contaminated water that leaked ... a level 3 assessment is appropriate,"
the document said.

The leak, which has not been plugged, is so contaminated that a person
standing 50 cm (1.6 feet) away would, within an hour, receive a radiation
dose five times the average annual global limit for nuclear workers.

After 10 hours, a worker in that proximity to the leak would develop
radiation sickness with symptoms including nausea and a drop in white blood
cells.

Each one-step INES increase represents a tenfold increase in severity,
according to a factsheet on the website of the International Atomic Energy
Agency. (www.iaea.org/)

(Reporting by Kentaro Hamada and James Topham; Writing by Aaron Sheldrick;
Editing by Edmund Klamann and Paul Tait)
 WORLD <http://www.reuters.com/news/world>
HEALTH <http://www.reuters.com/news/health>
ENVIRONMENT <http://www.reuters.com/subjects/environment>
JAPAN <http://www.reuters.com/places/japan>
NUCLEAR POWER <http://www.reuters.com/subjects/nuclear-power>



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