Radiation levels around tanks storing contaminated water at Japan’s crippled Fukushima nuclear plant have risen by a fifth to a new high, officials say.
Ground readings near one set of tanks stood at 2,200 millisieverts (mSv) on Tuesday, the plant operator and Japan’s nuclear authority said.
Saturday’s reading was 1,800 mSv.
Last month, plant operator Tokyo Electric Power Company (Tepco) said it had found highly contaminated water leaking from a storage tank.
Other leaks have also been reported, prompting the government on Tuesday to pledge 47bn yen ($473m, £304m) in funding to tackle the problem.
The spike in radiation levels found on Tuesday was in the same area where the 1,800 mSv level was detected on Saturday, a spokeswoman from Tepco told Bloomberg.
The readings are thought to be high enough to provide a lethal radiation dose to someone standing near contaminated areas without protective gear within hours.
But Japan’s Nuclear Regulation Authority (NRA) also said the areas were easily contained.
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