Information on Radiation at Ibarakifs Ports
(updated - May 18, 2011)
We have collected data on the radiation dosage in the atmosphere and ocean
water in the areas near the ports of Ibaraki Prefecture.
There is no health risk from the amount of
radiation measured at any of the ports.
Radiation in the Atmosphere May 18, 2011 (Tue.), 12PM
| Port | Atmospheric Radiation (unit: ΚSv/h) |
|
| Ibaraki Port | Hitachi District | 0.201 |
| Hitachinaka District | 0.132 | |
| Oarai District | 0.131 | |
| Kashima Port | 0.102 | |
*Atmospheric radiation is being measured at each of the locations below.
Hitachi Port District ¨ Hitachi-shi Kuji
Hitachinaka Port
District ¨ Hitachinaka-shi Ajigaura
Oarai Port
District ¨ Oarai-machi Isohama (Prefectural homepage)
Kashima Port ¨ Kashima Port Office (Prefectural Homepage)
(reference 1) The radioactivity value of one chest x-ray is 50 ΚSv (Micro-sievert)
(reference 2) 1000 nanosievert (nSv) = 1 microsievert (ΚSv) = 0.001 millisievert (mSv)
Radiation in Ocean Waters May 11, 2011 (Wed.)
| Port | Ocean Water (unit: Bq/L) |
|||
| Iodine131 (40) |
Cesium134 (60) |
Cesium137 (90) |
||
| Ibaraki Port | Hitachi District | not detected | not detected | not detected |
| Hitachinaka District | not detected | not detected | not detected | |
| Oarai District | not detected | not detected | not detected | |
| Kashima Port | not detected | not detected | not detected | |
The value
in bold print inside the parenthesis is the standard value as stipulated by the
Nuclear Reactor Regulation Law (legal limit)
*Radiation in ocean waters is being
measured at each of the locations below.
Hitachi and Hitachinaka Port Districts ¨ waters off the coast of Kujihama
Oarai Port District ¨ waters off the coast of Oarai-machi
Kashima Port ¨ waters off the coast of Hirai (From the TEPCO Ibaraki Branch Homepage (Japanese))
Management Group
Ports and Harbors Division
Department of Public Works
Ibaraki Prefectural Government
029-301-4521