Re: Tritium, .1 uCi

["Wesley M. Dunn" <WDUNN@brc1.tdh.texas.gov>]

> Date: Tue, 24 Jan 95 08:13:08 -0600
> From: scribner@ouvaxa.cats.ohiou.edu
> Subject: Tritium, .1 uCi
>
>     Is waste that contains less than .1 uCi/gm tritium non-detectable?

It depends on what form it is in.  .1 uCi/ml in scintillation fluid
is very easily detectable.  In sand, it is a bit more problematic.

>     Can you consider it to be non-radioactive?
>

Again, "it depends".  It is radioactive, but it might be exempt
from regulatory oversight.  It is above the exempt concentration
limits (3E-2), but is it below the exempt activity (1 mCi)?  If it is
not part of a licensed activity, you can use that.  If it is ground
contamination, it is above the soil contamination limits of 3,000
pCi/gm.  (All values are from Texas Regulations for Control of
Radiation).

Wes