[ RadSafe ] Tritium diffusion through plastic

[Franz Schönhofer]

Kjell,

I cannot give you numbers, but since the molecular weight of H2O is appr. 18
and the one of HTO appr. 20 HTO would only diffuse slightly slower.

If you have very high concentrations of tritium in the PE-bottles however,
you would contaminate your laboratory severely - if it is not yet
contaminated......

Best regard - venlig helsning!

Franz


2006/4/21, Johansen, Kjell <Kjell.Johansen at nmcco.com>:
>
> A question has come up about the rate of diffusion through polyethylene
> with respect to storage of samples.  Does anyone have any information
> regarding expected H-3 loss over a week.  I do not believe this is an
> issue but someone has raised it and I do not have an answer other than
> bottled water now comes in plastic bottles.  I can't see H-3 diffusing
> through polyethylene faster that regular water.
>
> Kjell Johansen
> Point Beach Nuclear Plant
> kjell.johansen at nmcco.com
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