Local measurement results of air radiation dose at City Hall (updated on November 1, 2016)
Updated: November 1, 2016
We have measured the air radiation dose on the premises of City Hall based on the city 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)).
Measurement results (implemented in FY2016)
| Name of facility | measuring date | weather | Measurement location | Measured value (unit: microsievert per hour) |
|---|---|---|---|---|
| 1 cm above ground | ||||
| Inagi City Hall | 2016 October 7th |
sunny | Planting in front of the west entrance | 0.068 |
| Rainwater basin in front of the east entrance | 0.073 | |||
| West parking lot rainwater basin | 0.055 | |||
| Garage building rainwater basin | 0.072 | |||
| North side parking lot gutter | 0.089 | |||
| Underground slope bottom gutter | 0.081 | |||
| 2nd parking lot | 0.079 | |||
| Parking lot 3 | 0.078 | |||
| Parking lot 4 | 0.059 | |||
| Parking lot 5 | 0.067 |
【explanation】
The annual equivalent of 0.23 microsieverts per hour is 0.99864 millisieverts, which is an indicator of the normal radiation dose received by the general public (less than 1 millisievert per year (natural radiation dose, etc.), as recommended by the International Commission on Radiological Protection (ICRP). )), this value is the city's criterion value .
According to the Ministry of the Environment's "Decontamination-related Guidelines," if the radiation dose at 1 meter of the ground surface is below 0.23 microsieverts per hour, no further action will be taken, but the city is on the safer side. We make decisions based on measurements taken at the closest location to the object (1 centimeter above the ground) while standing.
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 General Affairs Department Property Management Division
2111 Higashi-Naganuma, Inagi-shi, Tokyo
Phone: 042-378-2111 Fax: 042-377-4781
