[ RadSafe ] If You Are Near Salt Lake

bobcherry at satx.rr.com bobcherry at satx.rr.com
Sat Sep 1 17:58:43 CDT 2018


They are referring to the return to secular equilibrium of the entire U-238 and U-235 decay chains. It takes at least 20,000 years to even get close to it.

Bob Cherry

-----Original Message-----
From: RadSafe <radsafe-bounces at health.phys.iit.edu> On Behalf Of Chris Alston
Sent: Friday, August 31, 2018 7:26 AM
To: Radsafe List <radsafe at health.phys.iit.edu>
Subject: Re: [ RadSafe ] If You Are Near Salt Lake

P.S.  I’m not sure what they mean when they say that "the radioactive material gets hotter over time”.  Maybe they’re referring to the ingrowth of Pa-234 + Th-234 after centrifugation?

Cheers
ca

> On Aug 31, 2018, at 8:16 AM, Chris Alston <achris1999 at gmail.com> wrote:
> Well, it *does* have less U-235 than it had when they loaded it.  Maybe that’s the source of their confusion.
> 

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