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Started monitoring air radiation level at all Sites of NIMS from Sep. 2011.

2020.02.26 Update

We have been monitoring the radiation dose rate at NIMS Sengen-site since the accident at Fukushima nuclear power plant No.1. We have now started to measure the air radiation dose rate at all sites of NIMS including Sengen-site, Namiki-site, and Sakura-site.

Announcement

The Nano Characterization Field & Light/Quantum Beam Field of the Research Center for Advanced Measurement and Characterization are involved with this measurement of air radiation dose rate. Because the measuring method and instrument are different from that of Sengen-site mentioned above, we will put the monitoring data separately on this page.

Monitoring Place

Sengen-site(*Open in new window) (on the lawn outdoor)
Namiki-site(*Open in new window) (on the lawn outdoor)
Sakura-site(*Open in new window) (on the lawn outdoor)



Measuring Method

Instrument Nal(Tl) scintillation survey meter, ALOKA TCS-172B
Dose rate values including background level of 0.06µSv/h
Monitoring cycle in every two weeks at random times.
Measuring height 0cm, 50cm, 100cm at ground height


Monitoring Data

µSv/h (Micro sievert/hour; 1 micro sievert = 1/1000 milli sievert)

2020

Date Weather Time Ground height Sakura-site Sengen-site Namiki-site
MAY 24
NEW
Cloudy, 25℃ 10:56-12:35  0cm 0.05 0.06 0.05
 50cm 0.05 0.05 0.05
 100cm 0.05 0.05 0.06
MAY 9
NEW
Cloudy, 22℃ 11:35-14:13  0cm 0.06 0.05 0.06
 50cm 0.05 0.06 0.04
 100cm 0.06 0.05 0.05
APR 25
NEW
Sunny, 18℃ 14:32-16:20  0cm 0.05 0.05 0.06
 50cm 0.04 0.05 0.05
 100cm 0.05 0.06 0.06
APR 11
NEW
Sunny, 15℃ 13:30-17:00  0cm 0.05 0.06 0.06
 50cm 0.05 0.06 0.05
 100cm 0.06 0.05 0.06
MAR 26
NEW
Cloudy, 20℃ 16:15-17:36  0cm 0.06 0.06 0.06
 50cm 0.05 0.06 0.05
 100cm 0.05 0.06 0.05
MAR 13
NEW
Cloudy, 18℃ 16:48-18:08  0cm 0.05 0.05 0.06
 50cm 0.06 0.06 0.06
 100cm 0.05 0.06 0.05
FEB 29
NEW
Cloudy, 11℃ 11:00-12:30  0cm 0.06 0.05 0.08
 50cm 0.05 0.06 0.06
 100cm 0.05 0.06 0.06
FEB 15 Cloudy, 10℃ 12:00-14:00  0cm 0.06 0.06 0.06
 50cm 0.05 0.04 0.06
 100cm 0.05 0.05 0.06
JAN 31 Sunny, 10℃ 15:35-16:50  0cm 0.05 0.05 0.05
 50cm 0.05 0.06 0.05
 100cm 0.06 0.06 0.06
JAN 16 Cloudy, 9℃ 17:02-18:30  0cm 0.06 0.07 0.06
 50cm 0.05 0.06 0.05
 100cm 0.05 0.06 0.06
JAN 4 Sunny, 12℃ 11:20-12:25  0cm 0.05 0.07 0.06
 50cm 0.05 0.06 0.06
 100cm 0.06 0.07 0.05

Radiation monitoring data at other place of NIMS


2011

(*Open in new window)
Results for Sep. 2011 - Dec. 2011