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RE: Th-228/Th-232
Is it possible that you're dealing with source of radium waste extracted
from thorium ore that hasn't yet completely decayed away? The Ra-228 waste
stream, after ~ 14 years, would contain an equal amount of Th-228 activity.
Of course, the entire stream will decay away at Ra-228's 6.7 year half life.
But, if this stuff was created less than 40 years ago, it could be a source
of Th-228, absent its ultimate Th-232 parent.
Rodney Bauman, CHP, RRPT
84u@bechteljacobs.org
> -----Original Message-----
> From: Redmond, Randy R. (RXQ) [SMTP:rxq@y12.doe.gov]
> Sent: Wednesday, April 25, 2001 8:04 AM
> To: 'BLHamrick@AOL.COM'; radsafe@list.vanderbilt.edu
> Subject: RE: Uranium in Tailings of today
>
> While we are on the subject - does anyone know/have any theories why
> Th-228
> activity could exceed Th-232 activity without some type of costly
> enrichment?
>
> Randy Redmond
> BWXT Y-12 L.L.C.
> Y-12 National Security Complex
> Radiological Control Organization
> Email: rxq@Y12.doe.gov
> Phone: 865-574-5640
> Fax: 865-574-0117
>
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