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Pipe leaking radioactive water discovered at Fukushima

It has been patched up with tape, says TEPCO.

THE OPERATOR OF Japan’s stricken Fukushima nuclear plant says it has found highly radioactive water dripping from a pipe connecting two coolant tanks, and had patched it up with tape.

The discovery came hours after Tokyo Electric Power Co (TEPCO) said late Saturday it had found new radiation hotspots at four sites around coolant tanks, with one reading at 1,800 millisieverts per hour – a dose that would kill a human left exposed to it in four hours.

But the radiation was largely beta ray with weak penetration force, which workers can easily block by wearing protection jackets, a TEPCO spokesman said.

TEPCO has long struggled to deal with the huge amounts of water used to cool reactors that went into meltdown after being struck by an earthquake and tsunami in 2011.

The government has promised to get more involved in the plant’s clean-up after TEPCO’s efforts came in for fierce criticism.

The pipe at one of the four sites was found to be dripping one drop about every 90 seconds. It was repaired using special material and plastic tape.

Water with a radioactivity of 230 millisieverts per hour was found below it, TEPCO said.

It said workers also found two other hotspots, where they measured 70 and 220 millisieverts per hour near tanks. The fourth hotspot measured 1,800.

“We have to suspect that the high radiation levels were detected due to the toxic water oozing out of the flange connections,” the spokesman said, adding the company has not yet come to a conclusion.

Went unnoticed

Last week the plant operator admitted that 300 tonnes of toxic water had leaked from one large tank – one of around 1,000 on the site – before anyone had noticed.

The spill sparked fears the toxic water may have seeped into the ocean. It was categorised as a Level 3 event, the most serious category since the meltdown itself.

In response to growing domestic and international criticism of TEPCO’s handling of the crisis, Prime Minister Shinzo Abe on Thursday promised the world his government would play a greater role in stopping leaks of highly radioactive water.

The accident in Fukushima cannot be left entirely to Tokyo Electric Power. There is a need for the government to play a role with a sense of urgency, including taking measures to deal with the waste water.

Abe’s pledge came as the world’s nuclear watchdog urged Japan to explain more clearly what was happening at Fukushima and avoid sending “confusing messages” about the disaster.

© AFP,2013

Read: Fukushima leak upgraded to a “serious incident”

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