Local measurement results of air radiation dose in kindergarten (updated on January 1, 2017)
Update date: January 1, 2017
We have measured the air radiation dose within the kindergarten 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)).
Measurement results (implemented in FY2016)
| Name of facility | measuring date | weather | Measurement location | Measured value (unit: microsievert per hour) |
|---|---|---|---|---|
| 1 cm above ground | ||||
| Aoba Kindergarten | 2016 July 8th |
sunny | Bicycle parking | 0.083 |
| Garden (school building side) | 0.082 | |||
| Playground | 0.061 | |||
| Garden (lower scaffolding side) | 0.067 | |||
| Garden (gate side) | 0.059 | |||
| Dicentra kindergarten | 2016 July 14th |
sunny | Next to the furnace hut | 0.059 |
| Next to the birdhouse | 0.048 | |||
| Komazawa Kindergarten attached to Komazawa Women's Junior College | 2016 July 4th |
sunny | In front of the back entrance warehouse | 0.083 |
| Behind the swing | 0.062 | |||
| In front of the playground equipment | 0.063 | |||
| Behind the garden storehouse | 0.069 | |||
| Garden entrance drainage basin | 0.060 | |||
| Hanabusa Kindergarten | 2016 July 12 |
sunny | garden corner | 0.076 |
| Beside the sandbox | 0.044 | |||
| Behind the play equipment | 0.077 | |||
| Sandbox on the kindergarten side | 0.062 | |||
| Pathway between nursery buildings | 0.090 | |||
| Hirao Wakaba Kindergarten | 2016 July 12 |
cloudy | In front of the hall | 0.059 |
| In front of the nursery room | 0.056 | |||
| In front of playground equipment | 0.042 | |||
| sandbox | 0.042 | |||
| Yanoguchi Kindergarten | 2016 July 8th |
sunny | Central garden | 0.049 |
| sandbox | 0.056 | |||
| Drinking fountains | 0.071 | |||
| Rika Kindergarten | 2016 July 6 |
cloudy | North side garden | 0.063 |
| Near the shed rain gutter | 0.061 | |||
| South building drinking fountain | 0.076 | |||
| 1st floor corridor | 0.065 | |||
| Near the irrigation canal | 0.043 |
【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 Welfare Department Childcare Support Division
2111 Higashi-Naganuma, Inagi-shi, Tokyo
Phone: 042-378-2111 Fax: 042-377-4781
