Monitoring information of environmental radioactivity level
Nuclear Reguation Authority

Monitoring data at Ibaraki prefecture (14:00 September 10,2011)

μSv/h

Date JAEA Nuclear Science Research Institute:JAEA-NSRI
(Tokai village in Ibaraki prefecture)
JAEA Nuclear Fuel Cycle Engineering Laboratories:JAEA-NCL(Tokai village in Ibaraki prefecture) Yayoi in Tokyo University:Tokyo Univ.
(Tokai village in Ibaraki prefecture)
Remarks
Measurements Data updated Measurements Data updated Measurements Data updated  
9/9              
0:00 0.65   0.26   0.32    
1:00 0.65   0.26   0.36    
2:00 0.65   0.26   0.33    
3:00 0.65   0.26   0.34    
4:00 0.65   0.26   0.36    
5:00 0.65   0.26   0.33    
6:00 0.65   0.26   0.31    
7:00 0.65   0.26   0.36    
8:00 0.65   0.26   0.31    
9:00 0.65   0.26   0.35    
10:00 0.65   0.26   0.31    
11:00 0.64   0.26   0.36  
12:00 0.64   0.26   0.34  
13:00 0.64 0.26 0.33  
14:00 0.64 0.26 0.34  
15:00 0.65 0.26 0.30  
16:00 0.64 0.26 0.35  
17:00 0.64 0.26 0.32  
18:00 0.64 0.26 0.32  
19:00 0.65 0.26 0.35  
20:00 0.65 0.26 0.32  
21:00 0.65 0.26 0.36  
22:00 0.65 0.26 0.33  
23:00 0.65 0.26 0.36  
9/10              
0:00 0.65 0.26 0.31  
1:00 0.65 0.26 0.31  
2:00 0.65 0.26 0.33  
3:00 0.65 0.26 0.37  
4:00 0.65 0.26 0.35  
5:00 0.65 0.26 0.34  
6:00 0.65 0.26 0.33  
7:00 0.65 0.26 0.33  
8:00 Device maintenance 0.26 0.33  
9:00 Device maintenance 0.26 0.35  
10:00 Device maintenance 0.26      
11:00 Device maintenance 0.26      
12:00 Device maintenance 0.26      

Air dose rates are measured once every hour at the three sites above. The readings of JAEA Nuclear Science Research Institute and JAEA Nuclear Fuel Cycle Engineering Laboratories are also available on their websites below.
JAEA Nuclear Science Research Institute(http://erms.jaea.go.jp/Chart.htm), (http://erms2.jaea.go.jp/Chart.htm)
JAEA Nuclear Fuel Cycle Engineering Laboratories(http://www.jaea.go.jp/04/ztokai/kankyo/realtime/tbl_10mStPo01.html)