Some of the plutonium particles have a half-life of 300 years
FACT: The particles found on beaches are detected by their caesium-137
content, which has a half-life of 30 years.
I think Dounreay's reply is a wee bit misleading as well though I don't think there is much to worry about.
The fuel particles will have been detected using an instrument that is tuned to the gamma ray energy channels identifiable with Cs137. However, the fuel elements will definitely contain extra radioactivity which may be associated with longer lived isotopes (quite possibly plutonium albeit statistically at lower levels), so therefore, probably like the overall health risk, it can be considered to be very negligible.
Last edited by Rheghead; 06-Sep-06 at 09:53.
God, grant me the serenity to accept the things I cannot change,
Courage to change the things I can,
And wisdom to know the difference.
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