Nuclear officials said three of its workers have been exposed to radioactive elements and injured at Japan's disaster-crippled Fukushima plant.
A spokesman for the nuclear safety agency said the three workers were exposed to radioactive elements while laying electrical cables yesterday at the plant.
Two were exposed to radioactive elements on the skin of their feet and taken to hospital.
He said the workers were exposed to radiation levels of up to 180millisieverts, which is less than the maximum 250millisieverts that the government is allowing for workers at the plant.
Meanwhile, shops across Tokyo began rationing goods including milk, toilet paper, rice and water as a run on bottled water coupled with delivery disruptions left shelves bare, nearly two weeks after the earthquake and tsunami.
New readings yesterday showed the capital's tap water was back to safe levels, but the relief was tempered by elevated levels of the cancer-causing element in two neighbouring prefectures, Chiba and Saitama.