WASHINGTON, D.C. — Following the earthquake and subsequent tsunami that devastated Japan, the National Nuclear Security Administration (NNSA) is today releasing the raw radiation monitoring data it collected in response to the events at the Fukushima Daiichi nuclear power station.
For 10 weeks following the natural disaster, NNSA scientists utilized U.S. Air Force aircraft operated out of Yokota Air Base to collect data during more than 500 flight hours. NNSA scientists also collected thousands of field and soil samples. The raw data collected and analyzed from those flights and surveys are now available for public download and review on Energy.Data.gov here, here, here, and here. The above map visualizes the field measurements collected by the Energy Department in the area around the nuclear power station. Click on a point to see a chart of the measurements collected in that area.
“NNSA’s commitment to assisting the Japanese people in the aftermath of a devastating natural disaster demonstrates the value of international cooperation in supporting the monitoring and clean-up of a nuclear incident,” said Under Secretary for Nuclear Security & Administrator for the National Nuclear Security Administration Thomas P. D’Agostino. “NNSA’s unique capabilities played an important role in responding to this tragedy, and we are committed to the transparency of our data and information.”
After deploying its Consequence Management Response Team and Aerial Measuring System, the Department of Energy and NNSA have provided ongoing assistance to the Government of Japan to support dose assessment through collaboration on data analysis and quality control. NNSA also loaned the Government of Japan an Aerial Measuring System and other equipment to augment their capability.
A small NNSA team will return to Japan this month to provide further data collection and analysis support. Once these data have been collected and analyzed, results will also be widely available to the public for independent study and review.