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
News
The surrealist comedian at the Q Awards in 2010
people
News
Russell Brand arriving for the book launch in East London
peopleRussell Brand cancels his book launch debate due to concerns about the make-up of the panel
Sport
Christiano Ronaldo enjoys his opening goal
champions leagueLiverpool 0 Real Madrid 3: Ronaldo and Benzema run Reds ragged to avenge thrashing from their last visit to Anfield
Arts and Entertainment
Sir Nicholas Serota has been a feature in the Power 100 top ten since its 2002 launch
art
PROMOTED VIDEO
Have you tried new the Independent Digital Edition apps?
News
ebooksAn unforgettable anthology of contemporary reportage
Arts and Entertainment
Awesome foursome: Sam Smith shows off his awards
music22-year-old confirms he is 2014’s breakout British music success
Life and Style
Six of the 76 Goats' cheese samples contained a significant amount of sheep's cheese
food + drink
Arts and Entertainment
Contestants during this summer's Celebrity Big Brother grand finale
tvBroadcaster attempts to change its image following sale to American media group
Extras
indybest
Arts and Entertainment
Sarah Dales attempts to sell British Breeze in the luxury scent task
tvReview: 'Apprentice' candidate on the verge of tears as they were ejected from the boardroom
News
Call me Superman: one of many unusual names chosen by Chinese students
newsChinese state TV offers advice for citizens picking a Western moniker
News
Wilko Johnson is currently on his farewell tour
people
Voices
New look: Zellweger at Elle's Women in Hollywood awards on Monday
voicesRenée Zellweger's real crime has been to age in an industry that prizes women's youth over humanity, says Amanda Hess
News
Let’s pretend: KidZania in Tokyo
educationKidZania lets children try their hands at being a firefighter, doctor or factory worker for the day
Life and Style
CHARGE BOOSTER: Aeroplane mode doesn't sound very exciting, but it can be a (phone) hacker's friend. Turning on the option while charging your mobile will increase the speed at which your phone battery charges
techNew book reveals how to rid your inbox of spam, protect your passwords and amplify your iPhone
Arts and Entertainment
Julianne Moore and Ellen Page are starring together in civil rights drama Freeheld
film
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

Solutions Architect - Permanent - London - £70k DOE

£60000 - £70000 Per Annum Excellent benefits: Clearwater People Solutions Ltd:...

General Cover Teacher

£110 - £130 per day: Randstad Education Reading: Great opportunities for Cover...

Maths Teacher

£110 - £130 per day: Randstad Education Reading: QTS Maths Teachers needed for...

Maths Teacher

£110 - £130 per day: Randstad Education Reading: QTS Maths Teachers needed for...

Day In a Page

How could three tourists have been battered within an inch of their lives by a burglar in a plush London hotel?

A crime that reveals London's dark heart

How could three tourists have been battered within an inch of their lives by a burglar in a plush London hotel?
Meet 'Porridge' and 'Vampire': Chinese state TV is offering advice for citizens picking a Western moniker

Lost in translation: Western monikers

Chinese state TV is offering advice for citizens picking a Western moniker. Simon Usborne, who met a 'Porridge' and a 'Vampire' while in China, can see the problem
Handy hacks that make life easier: New book reveals how to rid your inbox of spam, protect your passwords and amplify your iPhone

Handy hacks that make life easier

New book reveals how to rid your email inbox of spam, protect your passwords and amplify your iPhone with a loo-roll
KidZania lets children try their hands at being a firefighter, doctor or factory worker for the day

KidZania: It's a small world

The new 'educational entertainment experience' in London's Shepherd's Bush will allow children to try out the jobs that are usually undertaken by adults, including firefighter, doctor or factory worker
Renée Zellweger's real crime has been to age in an industry that prizes women's youth over humanity

'Renée Zellweger's real crime was to age'

The actress's altered appearance raised eyebrows at Elle's Women in Hollywood awards on Monday
From Cinderella to The Jungle Book, Disney plans live-action remakes of animated classics

Disney plans live-action remakes of animated classics

From Cinderella to The Jungle Book, Patrick Grafton-Green wonders if they can ever recapture the old magic
Thousands of teenagers to visit battlefields of the First World War in new Government scheme

Pupils to visit First World War battlefields

A new Government scheme aims to bring the the horrors of the conflict to life over the next five years
The 10 best smartphone accessories

Make the most of your mobile: 10 best smartphone accessories

Try these add-ons for everything from secret charging to making sure you never lose your keys again
Mario Balotelli substituted at half-time against Real Madrid: Was this shirt swapping the real reason?

Liverpool v Real Madrid

Mario Balotelli substituted at half-time. Was shirt swapping the real reason?
West Indies tour of India: Hurricane set to sweep Windies into the shadows

Hurricane set to sweep Windies into the shadows

Decision to pull out of India tour leaves the WICB fighting for its existence with an off-field storm building
Indiana serial killer? Man arrested for murdering teenage prostitute confesses to six other murders - and police fear there could be many more

A new American serial killer?

Police fear man arrested for murder of teen prostitute could be responsible for killing spree dating back 20 years
Sweetie, the fake 10-year-old girl designed to catch online predators, claims her first scalp

Sting to trap paedophiles may not carry weight in UK courts

Computer image of ‘Sweetie’ represented entrapment, experts say
Fukushima nuclear crisis: Evacuees still stuck in cramped emergency housing three years on - and may never return home

Return to Fukushima – a land they will never call home again

Evacuees still stuck in cramped emergency housing three years on from nuclear disaster
Wildlife Photographer of the Year: Intimate image of resting lions claims top prize

Wildlife Photographer of the Year

Intimate image of resting lions claims top prize
Online petitions: Sign here to change the world

Want to change the world? Just sign here

The proliferation of online petitions allows us to register our protests at the touch of a button. But do they change anything?