Back Les på norsk

Caesium-137 in exposed population groups


4.1 Pollution will not cause injury to health or environmental damage.


Levels of selected radioactive substances in the environment
info Read more about the data share Share graf arrow-down Download graf as print Print

Are we moving in the right direction? Published by the Norwegian Radiation Protection Authority

In Kautokeino the highest concentrations of caesium-137 were registered in 1965. Since then, concentrations have gradually decreased, with the exception of an increase after the Chernobyl accident in 1986. However, after the accident, concentrations of caesium-137 in reindeer herders from Kautokeino have been much lower than those registered in central Norway.

Surveys of reindeer herders in the Snåsa region show very little decline in concentrations of radioactive caesium in the last decade. This is probably due to the fact that fewer people are now implementing countermeasures, since the concentrations in reindeer meat in most districts are below the action limit (3000 Bq/kg).

The concentrations in reindeer meat in the Snåsa region have not changed much since the late 1990s. In Kautokeino and the Røros region, the levels of radioactive caesium in reindeer herders are declining more steadily, corresponding with the reduction in reindeer contamination.