Unexpected Finds from Fukushima Radiation Searches
It was almost a moment of comic relief to me. After all the stories from Fukushima, especially the stories about pockets of high radiation levels being found far from the plant site, I read a story about an anomalously high radiation reading in Tokyo that turned out to be Radium-226 for luminous paint!
And the story hit somewhat close to home for me! The material was found in an abandoned home in Setagaya Ward, which is the part of Tokyo in which I lived when I spent a year there in 1998-1999. It was not in my immediate neighborhood, but close enough to get my attention. The material was found under the floorboards of an unoccupied house. The owner, a 90-year-old widow who vacated the house early this year, has no idea how it got there. Her deceased husband was an office worker and had nothing to do with radioactive materials. (Storage under the floorboards does not have the somewhat sinister implications it often has in US culture. Japanese houses have no basements and are built with crawl spaces under them. In small buildings with limited storage space, the space under the floorboards is often used for storage.)
The source of the material and the reason it's there is still a mystery. So far, no one is implying the house was broken into while vacant. The bottles are old, and the authorities are busy estimating the dose the woman would have received assuming they had been there a long time.
Of course, the comic relief was temporary. Like other cases where radioactive materials have found their way into the public domain, this could have had much more harmful consequences. What if someone had bought the house and had children sleeping just above the material? It is an accidental piece of luck that a search for radiation hot spots from Fukushima turned up this stash and possibly prevented the exposure of innocent people.
But after all the stories of radioactive contamination, and hot spots unexpectedly far from the reactors, it was a nice piece of news to hear that the search led to a discovery that might have prevented a smaller tragedy, but a tragedy nonetheless.