Path of radioactive water leak at Japan plant unclear

Workers used a milky white dye today as they frantically tried to trace the path of highly radioactive water gushing near Japan's tsunami-damaged nuclear plant and seeping into the ocean.

A crack in a maintenance pit found over the weekend was the latest confirmation that radioactivity continues to spill into the environment. The leak is a symptom of the primary difficulty at the Fukushima Dai-ichi complex: Radioactive water is pooling around the plant and preventing workers from powering up cooling systems needed to stabilize dangerously vulnerable fuel rods.



Engineers have turned to a host of improvised and sometimes bizarre methods to tame the nuclear plant after it was crippled in Japan's magnitude 9.0 quake and tsunami on March 11. Efforts over the weekend to clog the leak with a special polymer, sawdust and even shredded newspapers failed to halt the flow at a cracked concrete maintenance pit near the shoreline.



Suspecting they might be targeting the wrong channel to the pit, workers tried to see if they confirm the leak's pathway by dumping into the system several pounds (kilograms) of salts used to give bathwater a milky hue, plant operator Tokyo Electric Power Co. said Monday.



"There could be other possible passages that the water may be traveling. We must watch carefully and contain it as quickly as possible," said Hidehiko Nishiyama, a spokesman for the Nuclear Safety and Industrial Agency.



Radioactive water has pooled up throughout the Fukushima Dai-ichi plant because the operator has been forced to rely on makeshift ways of pumping water into plant — and allowing it to gush out wherever it can — to bring down temperatures and pressure in the reactor cores.



Government officials conceded Sunday that it will likely be several months before the cooling systems are completely restored. And even after that happens, there will be years of work ahead to clean up the area around the complex and figure out what to do with it.



The makeshift system makes it difficult to contain the radiation leaks, but it is aimed a preventing fuel rods from going into a full meltdown that would release even more radiactivity into the environment.



"We must keep putting water into the reactors to cool to prevent further fuel damage, even though we know that there is a side effect, which is the leakage," Nishiyama said. "We want to get rid of the stagnant water and decontaminate the place so that we can return to our primary task to restore the sustainable cooling capacity as quickly as possible."



To that end, the plant's operator, Tokyo Electric Power Co., said Monday it planned to jettison into the sea about 10,000 tons of water with radiation levels above the legal limit. The move will clear space in a waste storage building to put even more highly contaminated water, TEPCO spokesman Junichi Matsumoto said.



The government decided to allow the step as "an unavoidable emergency measure," Chief Cabinet Secretary Yukio Edano said.



An additional 1,500 tons will be dumped from a trench under the plant's units 5 and 6. That water is threatening to interfere with the workings at those units, whose reactors are under control.



Radioactivity is quickly diluted in the ocean, and Edano said the dump should not affect the safety of seafood in the area.



The crisis has unfolded as Japan deals with the aftermath of twin natural disasters that decimated large swaths of its northeastern coast. Up to 25,000 people are believed to have died in the disaster, and tens of thousands lost their homes. Thousands more were forced to flee a 12-mile (20-kilometer) radius around the plant because of the radiation.



Over the weekend, an 8-inch-long (20-centimeter-long) crack was discovered in a maintenance pit, sending a stream of water into the sea. The area is normally blocked off by a seawall, but a crack was also discovered in that outer barrier Monday.



Though it later authorized the dumping of slightly radioactive water, the government said Monday it was growing concerned about the sheer volume of contaminated materials spilling into the Pacific. It is not clear how much water has leaked from the pit so far.



"Even if they say the contamination will be diluted in the ocean, the longer this continues, the more radioactive particles will be released and the greater the impact on the ocean," Edano said. "We are strongly urging TEPCO that they have to take immediate action to deal with this."



The crisis has sparked protests in Japan and raised questions around the world about the safety of nuclear power. The head of the International Atomic Energy Agency told delegates at a nuclear safety conference Monday that the industry cannot afford to ignore these concerns.



"We cannot take a 'business as usual' approach," Yukiya Amano said.



The operator said Monday it is ordering fencing that is typically used to contain oil spills. The screens are not designed to trap radioactivity but might curtail the flow of water and thus reduce the spread of contamination, said TEPCO manager Teruaki Kobayashi. It was not clear when they would arrive.



All of the plant's reactors were designed by General Electric, and the company's CEO met Sunday with TEPCO's chairman. Jeffrey Immelt told reporters Monday that more than 1,000 engineers from GE and its partner Hitachi are helping to analyze the problems at the plant.



Immelt also offered assistance in dealing with the electricity shortage brought on by damage to Dai-ichi and other power plants. Japan is expecting a shortfall of at least 10 million kilowatts come summer.



Gas turbines are on their way from the U.S. with both long- and short-term capabilities, Immelt said.

Suggested Topics
Start your day with The Independent, sign up for daily news emails
Have you tried new the Independent Digital Edition apps?
News
ebooksAn unforgettable anthology of contemporary reportage
Life and Style
healthMeet the volunteer users helping to see if the banned drug can help cure depression and addiction
Arts and Entertainment
tvDick Clement and Ian La Frenais are back for the first time in a decade
Life and Style
tech
News
i100
News
Foo Fighters lead man Dave Grohl talks about the band's forthcoming HBO documentary series
people
News
i100
Latest stories from i100
Have you tried new the Independent Digital Edition apps?
Independent Dating
and  

By clicking 'Search' you
are agreeing to our
Terms of Use.

iJobs Job Widget
iJobs General

Recruitment Genius: Direct Mail Machine Operative

£13500 - £15000 per annum: Recruitment Genius: This is an opportunity for an i...

Recruitment Genius: Customer Accounts Executive

£14000 - £18000 per annum: Recruitment Genius: This is an opportunity for the ...

Recruitment Genius: Team Administrator / Secretary - South East

£14000 - £17000 per annum: Recruitment Genius: Full time Administrator/Secreta...

Recruitment Genius: Parts Advisor

£16500 - £18500 per annum: Recruitment Genius: One of the leading Mercedes-Ben...

Day In a Page

Thousands of teenage girls enduring debilitating illnesses after routine school cancer vaccination

Health fears over school cancer jab

Shock new Freedom of Information figures show how thousands of girls have suffered serious symptoms after routine HPV injection
Fifa President Sepp Blatter warns his opponents: 'I forgive everyone, but I don't forget'

'I forgive everyone, but I don't forget'

Fifa president Sepp Blatter issues defiant warning to opponents
Extreme summer temperatures will soon cause deaths of up to 1,700 more Britons a year, says government report

Weather warning

Extreme summer temperatures will soon cause deaths of up to 1,700 more Britons a year, says government report
LSD: Speaking to volunteer users of the drug as trials get underway to see if it cures depression and addiction

High hopes for LSD

Meet the volunteer users helping to see if it cures depression and addiction
Why the cost of parenting has become so expensive

Why the cost of parenting has become so expensive

Today's pre-school child costs £35,000, according to Aviva. And that's but the tip of an iceberg, says DJ Taylor
Fifa corruption: The officials are caught in the web of US legal imperialism - where double standards don't get in the way

Caught in the web of legal imperialism

The Fifa officials ensnared by America's extraterritorial authority are only the latest examples of this fearsome power, says Rupert Cornwell
Bruce Robinson: Creator of Withnail and I on his new book about Jack the Ripper

'Jack the Ripper has accrued a heroic aura. But I'm going after the bastard'

The deaths of London prostitutes are commonly pinned on a toff in a top hat. But Bruce Robinson, creator of Withnail and I, has a new theory about the killer's identity
Simon Stephens interview: The playwright on red-blooded rehearsals, disappointing his children - and why plays are like turtles

Simon Stephens interview

The playwright on red-blooded rehearsals, disappointing his children - and why plays are like turtles
Holidaying with a bike nut: Cycling obsessive Rob Penn convinces his wife to saddle up

Holidaying with a bike nut

Cycling obsessive Rob Penn convinces his wife to saddle up
Bill Granger recipes: Our chef pays homage to South-east Asia's palate-refreshing desserts

Bill Granger's fruity Asian desserts

Our chef's refreshing desserts are a perfect ending to a spicy, soy-rich meal
Fifa presidential election: What is the best way to see off Sepp Blatter and end this farce?

Michael Calvin's Last Word

What is the best way to see off Sepp Blatter and end this farce?
Mediterranean migrant crisis: 'If Europe thinks bombing boats will stop smuggling, it will not. We will defend ourselves,' says Tripoli PM

Exclusive interview with Tripoli PM Khalifa al-Ghweil

'If Europe thinks bombing boats will stop smuggling, it will not. We will defend ourselves'
Raymond Chandler's Los Angeles: How the author foretold the Californian water crisis

Raymond Chandler's Los Angeles

How the author foretold the Californian water crisis
Chinese artist who posted funny image of President Xi Jinping facing five years in prison as authorities crackdown on dissent in the arts

Art attack

Chinese artist who posted funny image of President Xi Jinping facing five years in prison