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

[Chris Alston]

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