CTBT: Science and Technology 2019 Conference

Analysis of high time-resolution observations of radioxenon releases from BWRs compared to stack data and reactor operation parameters

24 Jun 2019, 15:30

15m

Rittersaal (Hofburg)

Oral Theme 2. Events and Nuclear Test Sites T2.4 Atmospheric and Subsurface Radionuclide Background and Dispersion

Speaker

Anders Ringbom (Swedish Defence Research Agency (FOI))

Description

The newly developed SAUNA III – radioxenon system prototype has been running in Stockholm since 2016 and provided a rich data set of atmospheric radioxenon observations with 6 hour time resolution. A large part of the observed plumes originates from releases from the nuclear power plant Forsmark, located 110 km north of the system, and includes many observations/releases with three or even four isotopes. To gain better understanding of the observed plume shapes and isotopic ratios, data has been compared with stack- and other operational data provided by the plant, in combination with different atmospheric transport models as well as calculations of different nuclear production- and separation scenarios.