The Secretariat of the Nuclear Regulation Authority conducts surveys on radioactivity levels at ports nuclear powered warships call in, with the cooperation of relevant entities including local governments, the Japan Coast Guard, and the Fisheries Agency. Here, you can check the survey results.
Nuclear Powered Warship Departure and Post-departure Surveys and Periodic Surveys
On and after departure of a nuclear powered warship and quarterly, environmental samples such as sea water and sea sediment at ports are collected and analyzed for radioactivity. Results of the analysis are posted on this website once they become available.
Display the Latest Radiation Measurement Data
You can check the current measurement data at ports nuclear powered warships call in. (A third-party website opens in a new tab or window.)
Nuclear Powered Warship Call-in Survey
The Secretariat of the Nuclear Regulation Authority conducts the measurement of radiation levels in the air and sea water the day before a nuclear powered warship calls in, during its stay, and on its departure using monitoring posts and monitoring boats. The measurement results are released to the press on the day of the measurement. (A third-party website opens in a new tab or window.)
