[ RadSafe ] Fwd: Which welding rods are hot?

[franz.schoenhofer at chello.at]

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
> 
> [203] 441-8433 [o]
> [203] 522-2817 [m]
> [203] 367-0791 [fax]
> 
> 
> -----Original Message----- From: Ted de Castro
> Sent: Monday, November 05, 2012 3:05 PM
> To: The International Radiation Protection (Health Physics) Mailing List
> Subject: [ RadSafe ] Which welding rods are hot?
> 
> I know I've encountered some considerably hot welding rods - but didn't
> notice the type designation.
> 
> I just checked my own supply - so 60's, 70's and 78's - I was SURE at
> least my 6010 would be hot --- but NO - they none were.
> 
> So - asked of anyone who has some hot ones --- what type?
> 
> thanks
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--
Franz Schoenhofer, PhD, MinRat
Habicherg. 31/7
A-1160 Vienna
Austria
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