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RE: Tungsten,2% Thoriated or Pure?



Original poster: Terrell Fritz <terrellfone@xxxxxxxxxxxxxxxxxxxxxxx>

The amount of radioactivity is not considered high enough to kill...

http://www.hps.org/publicinformation/ate/q1593.html

Cheers,

        Terry



At 03:40 PM 2/11/2007, you wrote:
Original poster: "Godfrey Loudner" <ggreen@xxxxxxxx>

How do welders protect themselves from thoriated welding rods?

Godfrey Loudner

Original poster: David Speck <dave@xxxxxxxxxxxxxxxx>

Joe,

The objection to the use of thoriated gap elements is that thorium is
a naturally radioactive alpha particle emitter.  There is a small but
measurable amount of gap erosion during TC operation, with some of
that electrode material being converted to fine airborne radioactive
dust. I think that many coilers are willing to sacrifice a small amount
of
gap efficiency to reduce the risk of lung cancer.
Dave