High radiation level found in Tokyo park
Print Edition
EXTREMELY high levels of radiation have been discovered in a playground in Tokyo, officials said yesterday, fanning fears for the health of children in the area.
Soil underneath a slide at the park in the northwest of the Japanese capital showed radiation readings of up to 480 microsieverts per hour, the local administrative office said.
Anyone directly exposed to this level would absorb in two hours the maximum dose of radiation Japan recommends in a year.
“Many children play in the park, so the ward office should explain the situation,” Kyodo News quoted a 62-year-old local woman as saying.
The radiation level is over 2,000 times that at which the national government requires soil cleaning in areas around the Fukushima Daiichi nuclear plant, where reactors melted down after the 2011 tsunami.
But that standard is for measurements taken at 50 centimeters to 1 meter above ground, while officials in Tokyo’s Toshima ward checked the ground itself.
Officials were made aware of the contamination after a local resident reported it on Monday and said they do not think it is connected to the disaster at Fukushima.
“Because the area in which we detect radioactivity is very limited, and readings in surrounding parts are normal, we suspect radioactive materials of some kind are buried there,” said mayor Yukio Takano.
The park was built in 2013 on what was previously a parking lot for Tokyo’s sanitation department, an official said.
Top soil at the lot was replaced before the land was turned into a park, she said.
The park has been sealed, and Toshima ward is discussing with experts how to approach the problem, she said.
Families in east Japan continue to survey the levels of radioactive contamination around their houses, distrustful of government assurances that most places were not affected by the Fukushima meltdown.
Such efforts have led some people finding radioactive materials in their neighborhoods.
Months after the Fukushima crisis, officials found bottles of radium under a house and a supermarket in Tokyo.
The park incident came days after a drone showing traces of radioactivity was found on the roof of the prime minister’s official residence.
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