Environmental radiation dose information system used by cellular phone in JAERI

An environmental radiation monitoring system in Tokai establishment of JAERI is composed of 14 monitoring posts, 4 monitoring stations, 2 drainage monitors and the monitoring data observation center. These monitoring posts and stations measure the gamma dose rate (nGy/h) in air used by the NaI(Tl) detector, and the monitoring stations measure the radioactive air concentration (Bq/m3 ) too. Drainage monitors measure the radioactive concentration (Bq/ml) in drain water used by the NaI(Tl) detector. We have to observe these monitoring data to check the influence to the environment by the abnormal released radioactive materials from the nuclear facilities. We developed the environmental radiation dose information system used by cellular phone for observing the monitoring data in day and night, working day and holiday at every place in Japan. This information system gives us the alarm voice and e-mail by cellular phone if the monitoring data reach the alarm level. And more, this information system shows us the every minute or every 10 minutes monitoring data table and data trend graph on the cellular phone display. In the emergency situation, this system helps for speedy response such as the notification to the JAERI staffs, starting the emergency environmental monitoring activities, reporting the dose rate and concentration to the national and local authorities, and establishment of the emergency response team in JAERI