The environmental surveillance of the Risø environment was continued in January-June 2015. The mean concentrations in air were: 0.23±0.18 μBq m–3 of 137Cs, 2.19±0.91 μBq m–3 of 7Be and 0.13±0.05 μBq m–3 of 210Pb (±1 S.D.). The depositions by precipitation at Risø in the first half of 2015 were: 0.054±0.015 Bq m–2 of 137Cs, 433±43 Bq m–2 of 7Be, 22.5±4.5 Bq m–2 of 210Pb and < 0.5 kBq m–2 of 3H. The average background dose rate (TLD) at Risø (Zone I) was measured as 63 nSv h–1 compared with 56 ± 3 nSv h–1 (±1 S.D.) in the four zones around Risø.
|Number of pages||26|
|Publication status||Published - 2015|