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Space radiation dose local measurement result (January 15, 2017 update) of physical education facility

Updated: January 15, 2017

We have measured the air radiation dose in the sports facility based on the city's air radiation dose measurement response policy, and we would like to announce the results.
In addition, during this measurement, there were no locations that required cleaning, etc. (locations that exceeded the judgment standard value (0.23 microsieverts per hour)).
Since 2015, with the construction of new physical education facilities, we have added Nagamine Sports Square and are conducting new measurements.

Measurement results (conducted in 2016)

Name of facility measuring date weather Measurement location Measured value (unit: microsieverts per hour)
1 centimeter on the ground
Tamagawa Ryokuchi Park Ballpark December 12th fine weather Behind the A-side back net 0.041
In front of the bench on the third base side of A side 0.046
A side second base rear 0.033
Side A sand storage 0.047
B side first base side sand storage area 0.033
B-side second base rear 0.043
Tamagawa Ryokuchi Park Softball Field December 12th fine weather Behind the A-side back net 0.061
Near the bench on the first base side of A side 0.043
A side second base rear 0.039
B-side second base rear 0.040
B side mound 0.028
Behind the B-side back net 0.038
Tamagawa Ryokuchi Park Multi-Purpose Square December 12th fine weather sand storage 0.057
Near downstream goal 0.052
Near upstream goal 0.048
Tamagawa Ryokuchi Park Gateball Field December 12th fine weather downstream side 0.062
upstream 0.074
Wakabadai Park Multipurpose Square December 13th Cloudy Left side groove 0.065
Light side gutter 0.047
Wakabadai Park Tennis Court December 13th Cloudy southeast corner 0.063
center 0.067
south central 0.050
Inagi Nagamine Sports Square December 13th Cloudy South corner of the soccer field 0.044
soccer field north corner 0.043
Futsal field center 0.056
Southeast corner of the parking lot 0.042
Administration building south side 0.032
Central lawn 0.031
Friend Hirao Gymnasium December 13th Cloudy Gymnasium northwest corner 0.051
South corner of the gymnasium 0.056
Southeast corner of the gymnasium 0.052
Friend Hirao Ground December 13th Cloudy Southeast corner of the ground 0.059
Northeast corner of the ground 0.044
ground north corner 0.050
Minamitama Sports Plaza Soccer Field December 15th Cloudy West tennis court side 0.038
Nishikawa side corner 0.044
On the manhole near the sandbox 0.036
Minamitama Sports Plaza Tennis Court December 15th Cloudy northwest corner 0.058
center 0.046
Daimaru Park Tennis Court December 16th fine weather northeast corner 0.074
B side entrance 0.066
Shiroyama Park Tennis Court December 16th fine weather southeast corner 0.072
northwest corner 0.067
Inagi Central Park Ballpark December 16th fine weather Near the back net 0.068
under the left pole 0.046
Inagi Central Park General Ground December 16th fine weather stand 0.059
field northwest drain 0.039
center 0.037
Field Southeast Ditch 0.036
Inagi Central Park Gymnasium December 16th fine weather 1st floor front entrance 0.089
central courtyard 0.050
Kita Ryokuchi Park Tennis Court December 15th Cloudy AB side west side 0.066
East side of AB side 0.064
CD side west road side 0.064
East road side of EF 0.067
EF side Higashikawa side 0.059
DE side Chuo River side 0.062
Daimaru Park multi-purpose square December 15th Cloudy Behind the A-side back net 0.042
Side B outfield net fence east side 0.046
Square east side net fence 0.048

【explanation】
When converted from 0.23 microsieverts per hour to 0.99864 millisieverts per year, it is lower than the radiation dose index (1 millisievert or less per year (excluding natural radiation dose, etc.)) recommended by the International Commission on Radiological Protection (ICRP) for ordinary people to receive.
According to the Ministry of the Environment's "Decontamination Guidelines", if the radiation dose at 1 meter above the ground is below 0.23 microsieverts per hour, no further action will be taken.

Measurement overview

  • Measurer city employee
  • Measuring equipment
    PA-1000
  • Measuring method
    Average of 5 repeated measurements every 60 seconds

Past measurement results

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Inquiries about this page

Inagi City Education Department Physical Education Division
2111 Higashi Naganuma, Inagi City, Tokyo
Phone: 042-378-2111 Fax: 042-379-3600

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