[ RadSafe ] Fwd: Fwd: Which welding rods are hot?

[franz.schoenhofer at chello.at]

Chris, 
Without any doubt you are correct - but did you consider the range of gamma-rays? Obviously not. Anyway thanks to a US-citizen for a civilized answer to a stupid European (this seems to be my impression on RADSAFE)! 

Best wishes!
Franz







---- Chris Alston <achris1999 at gmail.com> schrieb:
> Hi Franz
> 
> Yes, quite true.  But, it is not a gas.
> 
> Cheers
> cja
> 
> 
> ---------- Forwarded message ----------
> From:  <franz.schoenhofer at chello.at>
> Date: Tue, Nov 6, 2012 at 8:15 AM
> Subject: Re: [ RadSafe ] Fwd:  Which welding rods are hot?
> To: "The International Radiation Protection (Health Physics)
> MailingList" <radsafe at health.phys.iit.edu>
> Cc: Chris Alston <achris1999 at gmail.com>
> 
> 
> Chris,
> 
> You forget that thorium is also radioactive.
> 
> Franz
> 
> 
> 
> 
> ---- Chris Alston <achris1999 at gmail.com> schrieb:
> > Hi Stewart
> >
> > Thing is, thoron (radon-220) has a 55-second half-life.  So, probably
> > only the tiniest quantities can escape the rod, from its very surface.
> >
> > Cheers
> > cja
> >
> >
> > ---------- Forwarded message ----------
> > From: Stewart Farber <safarber at optonline.net>
> > Date: Mon, Nov 5, 2012 at 4:27 PM
> > Subject: Re: [ RadSafe ] Which welding rods are hot?
> > To: "The International Radiation Protection (Health Physics)
> > Mailing       List" <radsafe at health.phys.iit.edu>
> >
> >
> > TIG welding rods. Labeled 3% thoria by weight. Quite a source. I've
> > been to some welding supply houses to get LN2 which have thousands of
> > lbs of these TIG rods on shelves behind the counter.  Think of the
> > employees Rn-220 inhalation !
> >
> >
> > Stewart Farber, MS Public Health
> > Farber Medical Solutions, LLC
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--
Franz Schoenhofer, PhD, MinRat
Habicherg. 31/7
A-1160 Vienna
Austria
mobile: ++43 699 1706 1227