High radioactive cesium levels found at Tokyo school

  • High radioactive cesium levels found at Tokyo school

    Radioactive cesium more than 10 times the standard for waste disposal has been detected on lawn covers that had been placed in a schoolyard from mid-March until early April at Horinouchi Elementary School in Tokyo's Suginami Ward.

    The measured value, 90,600 becquerels of radioactive cesium per kilogram, was more than triple the 26,400 becquerels contained in sludge at a sewage treatment facility in Koriyama, Fukushima Prefecture, about 60 kilometers from the disabled Fukushima No. 1 nuclear power plant.

    "The cover, with its wide surface area, became contaminated with large amounts of radioactive substances (shortly after the onset of the nuclear accident)," said a Suginami Ward official. "We suspect the light weight of the covers has led to radioactive cesium being detected at such high levels, given that the concentration levels of the substance are calculated on a per kilogram basis."

    Source: ajw.asahi.com