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- Radiation dose measurement of roads around facilities in FY2011
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Radiation dose measurement of roads around facilities in FY2011
Last Updated March 5, 2019
Measurement contents
We prioritized roads around facilities such as parks, elementary and junior high schools, kindergartens, and nursery schools, which are often used by children.
General space radiation dose
On roads around facilities such as parks, elementary and junior high schools, kindergartens and nursery schools, we measured spatial gamma doses of 50 cm and 1 meter at typical locations 1-2 points.
Radiation doses at locations that may become microspots
On roads around facilities such as parks, elementary and junior high schools, kindergartens, nursery schools, etc., we measured gamma doses of 1 cm, 50 cm and 1 meter on the ground at places where it could become micro spots.
Publication of measurement results
We published measurement result every ward.
The measurement results were tabulated for each ward, general spatial radiation dose in the facility, and radiation dose at points that could become micro spots.
About measuring instruments
The measuring instrument used for the measurement are as follows.
Mr. Gamma A2700 type (manufactured by Clear Pulse)
Detector CsI (TI) scintillation detector
| Surface height | Estimated Response |
|---|---|
| 1 meter | Responses to 0.23 microsieverts / hour or more |
| (50 cm) | (approximately 0.23 microsieverts per hour or more.) (If it is 0.23 microsieverts / hour or more, measure even 1 meter.) |
| 1 cm | Responses to 0.59 microsieverts / hour or more |
If you have any requests for measurement of facilities managed by Public Works Office, please contact the Public Works Office of each district.
Public Works Office list page
We can read radiation-related information of Motoichi on the next page.
Radiation-related information page
"Places where radiation doses higher than the surrounding area was measured (about so-called micro spots"), you can browse on the next page.
Health and Social Welfare Bureau Health and Safety Division page
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For inquiries to this page
Road and Highway Bureau Road Department Maintenance Division
Phone: 045-671-2782
Phone: 045-671-2782
Fax: 045-662-1051
Email address: do-iji@city.yokohama.jp
Page ID: 303-110-412
