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Thorium welding rod exposure

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Marlin:
What is the annual whole body dose to a welder who grinds his own thoriated welding rods? This shouldn't be to hard there are a couple of sources, but I'll post in a week if no one gets it.

PWHoppe:

--- Quote from: Marlin on Dec 29, 2007, 03:32 ---What is the annual whole body dose to a welder who grinds his own thoriated welding rods? This shouldn't be to hard there are a couple of sources, but I'll post in a week if no one gets it.

--- End quote ---

snip...

"The grinding of the rod to form a pointed end can take anywhere from 20 to 60 seconds depending on the skill of the grinder. For welders that grind their own rods, this can take a minute or even longer. Individuals who specialize in this activity can complete the task much quicker.  At a large facility, e.g., with 50 welders, a grinder might handle as many as 150 rods per day (ca. 3 per day per welder).  For the purpose of the calculations, NUREF-1717 assumed that the particle size AMAD was 1 um.

An individual welder sharpening his own rods was estimated to receive 20 mrem per year.  This would be reduced by a factor of ten or so if a local exhaust system was used.

A dedicated grinder sharpening rods for 200 hours per year without the benefit of a local exhaust system was estimated to receive approximately 800 mrem."


http://www.orau.org/PTP/collection/consumer%20products/weldingrod.htm

Gold Star or no Gold Star ???

Marlin:
 :) Gold Star  :)

SloGlo:
'n da dose two da welder helper who slept ina rod bin all day wooda bin watt?

Cycoticpenguin:

--- Quote from: PWHoppe on Dec 30, 2007, 03:00 ---
A dedicated grinder sharpening rods for 200 hours per year without the benefit of a local exhaust system was estimated to receive approximately 800 mrem."


--- End quote ---

good lord, how much do they get paid for that?!

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