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  • Dec 29, 2014
  • Updated: 12:39am

Fukushima nuclear accident

The Fukushima Daiichi nuclear disaster was a series of equipment failures, nuclear meltdowns and releases of radioactive materials at the Fukushima nuclear power plant in northeastern Japan, following a devastating earthquake and tsunami on 11 March 2011 which claimed nearly 19,000 lives. It is the largest nuclear disaster since Chernobyl in 1986 and only the second disaster to measure Level 7 on the International Nuclear Event Scale.


Overseas help sought in battle to halt Fukushima radioactive leaks

Tepco chief admits for first time that expertise from abroad is needed to help contain leaks of radioactive water at the crippled nuclear plant

PUBLISHED : Friday, 23 August, 2013, 12:00am
UPDATED : Friday, 23 August, 2013, 3:30am

The crippled nuclear plant at Fukushima is losing its two-year battle to contain radioactive water leaks and its owner emphasised for the first time it needs overseas expertise to help contain the disaster.

Tokyo Electric Power Co (Tepco) is grappling with the worst spill of contaminated water since the March 2011 earthquake and tsunami caused a meltdown at the Fukushima Dai-Ichi plant.

The call for help from Zengo Aizawa, a vice-president at the company, follows a leak of 300 tonnes of irradiated water.

Japan's nuclear regulator branded the incident "serious" and questioned Tepco's ability to deal with the crisis. Prime Minister Shinzo Abe made similar comments earlier this month.

Aizawa said: "We will revamp contaminated water management to tackle the issue at the Fukushima Dai-Ichi plant and seek expertise from within and outside of the country.

"There is much experience in decommissioning reactors outside of Japan. We need that knowledge and support."

The International Atomic Energy Agency and the US Nuclear Regulatory Commission said they were prepared to help.

Tepco said yesterday that it had found new radiation hotspots near tanks storing radioactive water, but no new leaks.

About 300 tonnes of toxic liquid is believed to have escaped from one of the tanks holding polluted water, some of which was used to cool broken reactors.

During inspections yesterday of about 300 other tanks, Tepco said while no more holes had been found, two areas were a cause for concern.

"We have confirmed two spots where radiation doses are high" near two other tanks, a company statement said.

Tepco was storing 330,000 tonnes of radioactive water as of last week in tanks covering an area equal to 37 football fields.

The company is clearing forest to make room for more tanks as it adds to the stored water at a rate of 400 tonnes a day.

The water is being pumped out from under the plant's reactors, which melted down as a result of the March 2011 earthquake and tsunami.

The water is treated to remove some of the cesium particles before it is stored, which has left 480 filters clogged with the radioactive material at the site.

Each weigh 15 tonnes and are warehoused in what the utility calls temporary storage, though it will take centuries to decay.

Other radioactive contaminants remain in the water even after treatment. That includes strontium, which has been linked to bone cancers.

Besides radiated water, the site north of Tokyo has more than 73,000 cubic metres of contaminated concrete, 58,000 cubic metres of irradiated trees and undergrowth and 157,710 gallons of toxic sludge, Tepco said.

Japan's nuclear watchdog has ratcheted up alarm over the potential for more leaks of highly radioactive water from the hundreds of storage tanks.

The possibility of leaks from other tanks "is the biggest concern," Nuclear Regulation Authority chairman Shunichi Tanaka said. "This will need to be handled carefully on the assumption that one incident could bring another."

Late on Wednesday night, Tepco said water leaking from the storage tank probably ran into the ocean, citing high radiation readings in a drainage ditch.

Up to 20 trillion becquerels of cesium and 10 trillion becquerels of strontium leaked into the sea since May 2011, said a company spokeswoman, which is about 100 times the annual limit.

Additional reporting by Agence France-Presse


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The world has indulged Japan,
deceived by the nation’s practiced pretension of innocent trustworthiness
into believing Japan’s integrity and ability in management of world important matters
Like Chernobyl, Fukushima is level 7,
the worst kind of disaster
in the International Nuclear Event Scale
Japan has neither the integrity nor the ability
and shouldn’t have been trusted from the beginning
In response to Japan’s nuclear blunder
Germany immediately shut down 8 of its17 reactors
and planned to shut all its nuclear reactors by 2022
But the dwarf nation has turned militant
Abe said he wanted more nuclear power
Most of Japanese mayors from cities hosting nuclear plants
supported restarting reactors
Japan has since launched the Izumo
and been trying hard to repeal the peaceful constitution that
it adopted after being nuked to neuter the nation’s innate violence
No one can help the Japanese if they don’t help themselves
Learn from Germany’s sensible decisiveness
Japan should stop the nonsense
Shut down the damned reactors
and turn back from destructive militarism
The lesson of WWII is:
If nukes were available in 1941
it’d be inhuman to wait till 1945
to nuke the kamakazi nation


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