[siokan]

After the accident, the valve is opened and closed four times.
If the valve is not opened, it is not scattered in atmosphere.

Data of nagaoka-city (長岡市)
Real time
http://www.k4.dion.ne.jp/~ngtl-rad/maintenance.html
Data in July (excel)
http://www.pref.niigata.lg.jp/HTML_T...housyasen7.xls
Data in June
http://www.pref.niigata.lg.jp/HTML_T...usyasen6,0.xls

I do not think that there is worry of contamination.
You should note the overeating and drinking too much.

Home of the most famous rice in Japan.
Fresh fish and shellfish.
The production of sake is also famous.
It is a dangerous area in the person who likes sake.....