Fresh nuclear leak detected at Fukushima plant, Japan

Nuclear Alert

Sensors at the Fukushima nuclear plant have detected a fresh leak of highly radioactive water to the sea, the plant’s operator announced today, highlighting difficulties in decommissioning the crippled plant.
 
Tokyo Electric Power Co (TEPCO) said the sensors, which were rigged to a gutter that pours rain and ground water at the Fukushima Daiichi plant to a nearby bay, detected contamination levels up to 70 times greater than the already-high radioactive status seen at the plant campus.
 
TEPCO said its emergency inspections of tanks storing nuclear waste water did not find any additional abnormalities, but the firm said it shut the gutter to prevent radioactive water from going into the Pacific Ocean.
 
The higher-than-normal levels of contamination were detected at around 10 am (local time), with sensors showing radiation levels 50 to 70 times greater than usual, TEPCO said.
 
Though contamination levels have steadily fallen throughout the day, the same sensors were still showing contamination levels about 10 to 20 times more than usual, a company spokesman said.
 
It was not immediately clear what caused the original spike of the contamination and its gradual fall, he added.
 
The latest incident, one of several that have plagued the plant in recent months, reflects the difficulty in controlling and decommissioning the plant, which went through meltdowns and explosions after being battered by a giant tsunami in March 2011, sparking the world’s worst nuclear disaster in a generation.
 
TEPCO has not been able to effectively deal with an increasing amount of contaminated water, used to cool the crippled reactors and molten fuels inside them and kept in large storage tanks on the plant’s vast campus.
 
Adding to TEPCO’s headaches has been the persistent flow of groundwater from nearby mountains travelling under the contaminated plant before washing to the Pacific Ocean.
 
The International Atomic Energy Agency recently said TEPCO has made “significant progress” in cleaning up the plant, but suggested that Japan should consider ways to discharge treated waste water into the sea as a relatively safer way to deal with the radioactive water crisis.
Members of the media and TEPCO employees in the H4 area at the tsunami-crippled TEPCO Fukushima Daiichi nuclear power plant in Fukushima prefecture. File Photo
Members of the media and TEPCO employees in the H4 area at the tsunami-crippled TEPCO Fukushima Daiichi nuclear power plant in Fukushima prefecture. File Photo
Courtesy of The Hindu BusinessLine

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