UPDATE 1-New highly radioactive leak at Japan's Fukushima plant

Thu Feb 20, 2014 10:19am IST

Related Topics

Stocks

   

* Worst radioactive water leak at Fukushima since last August

* Utility says water unlikely to have reached ocean

* Tepco strongly criticised for reaction to 2011 meltdowns (Adds company quote, radiation measurement, more details)

By Mari Saito

TOKYO, Feb 20 (Reuters) - The operator of Japan's Fukushima nuclear plant said on Thursday that 100 tonnes of highly contaminated water had leaked out of a tank, the worst incident since last August, when a series of radioactive water leaks sparked international alarm.

Tokyo Electric Power Co told reporters the latest leak was unlikely to have reached the ocean. But news of the leak at the site, devastated by a 2011 earthquake and tsunami, further undercut public trust in a utility rocked by a string of mishaps and disclosure issues.

"We are taking various measures, but we apologise for worrying the public with such a leak," said Masayuki Ono, a spokesman for the utility, also known as Tepco.

"Water is unlikely to have reached the ocean as there is no drainage in that tank area."

Tepco said water overflowed from a large storage tank at the site late on Wednesday after a valve had remained open by mistake and sent too much contaminated water into a separate holding area.

A worker patrolling the area, around 700 metres from the ocean, spotted drips of water leaking through a drain attached to the side of the tank.

The utility has been harshly criticsed for its response to the three nuclear meltdowns following the quake and tsunami at the plant, 220 km (130 miles) north of Tokyo.

A nuclear regulatory official last week said Tepco delayed release of record-high measurements of strontium-90 in groundwater despite repeated requests by the regulator.

Initial measurements of the latest incident showed the leaked water had a reading of 230 million becquerels per litre of beta-emitting radioactive isotopes, including strontium 90.

That level is almost equal to that recorded in last year's leak of 300 tonnes of contaminated water, deemed a "serious incident", or level three, on the seven-point international scale for radiological releases.

The legal limit for releasing strontium 90 into the ocean is 30 becquerels per litre. (Additional reporting by Kentaro Hamada; Editing by Dominic Lau and Ron Popeski)

FILED UNDER:
  • Most Popular
  • Most Shared

DEFENCE

REUTERS SHOWCASE

Intel's Valuation

Intel's Valuation

Intel could rise 30 percent over next two years - Barron's.  Full Article 

Canonisation

Canonisation

Pope declares sainthood of two Indians, four Italians.  Full Article 

Stake Sale Strike

Stake Sale Strike

Coal India trade unions call off strike in victory for Modi.  Full Article 

Interview with Bulgari CEO

Interview: Bulgari CEO

Bulgari CEO: we shouldn’t have left India so we’re back.  Full Article 

Formula One

Formula One

Hamilton takes second F1 title in style.  Full Article 

Available For Remake

Available For Remake

Bollywood finally wants to pay the price for remakes.  Full Article 

Davis Cup

Davis Cup

Vintage Federer seals first Davis Cup for Switzerland.  Full Article 

Reuters India Mobile

Reuters India Mobile

Get the latest news on the go. Visit Reuters India on your mobile device  Full Coverage