Fukushima reactor has fresh leaks; fatal radiation

TOKYO—A new probe at Japan’s crippled nuclear power plant has found fatal radiation levels and hardly any cooling water inside one of the reactors, renewing concerns about the plant’s stability.

The operator of the Fukushima Dai-ichi nuclear plant says an endoscopic examination detected radiation levels 10 times the fatal dose inside the No. 2 reactor’s chamber, suggesting challenges ahead in shutting down the facility.

The probe also found the containment vessel had only about 60 centimetres of cooling water, far below the 10 metres  the government declared in December.

Plant workers also reported fresh leaks of contaminated water from a water treatment unit, some flowing into the ocean.