Tokai leak was 20 billion becquerels


The amount of radiation released in an accident in May at an atomic research laboratory in the village of Tokai, Ibaraki Prefecture, is estimated at some 20 billion becquerels, its operators said Monday.

Radiation exposure in the area near the laboratory is estimated at up to 0.17 microsievert, lower than the legally set annual limit of 1 millisievert, and there is no health hazard, the Japan Atomic Energy Agency and the High Energy Accelerator Research Organization said in their third report of the accident.

The report of the accident at the Japan Proton Accelerator Complex, or J-PARC, was submitted to the Nuclear Regulation Authority and local governments.