Iodine-131 -Update

date30 March 2011

The Scottish Environment Protection Agency (SEPA) was informed this morning (30 March) that initial analysis of routine grass samples collected in the North of Scotland have revealed very low levels of iodine-131. Further analysis is being undertaken and the final results are expected early next week.

This was picked up during routine environmental monitoring around Dounreay. We are confident that this is not from the site itself because it has been detected at the same time as samples across Europe, and current site operations are highly unlikely to have released iodine-131 in the concentrations detected.

SEPA has provided this information to the Food Standards Agency which is responsible for food safety.

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Notes to editors

  • Iodine-131 has a half life of eight days. This means that after eight days the activity will have dropped by 50%, after 16 days it will have dropped to 25%.