[ RadSafe ] WISE Uranium caluclators etc

[James Salsman]

Yes, I'm wrong; I was doing uranyl nitrate, got much less radiation,
switched to the same quantity of UO3, and missed that the decimal
point had jumped two places.  Beyond that I was using the LD50/30 for
uranyl nitrate, too.

-- Inhalation, using dose coefficients from ICRP 72 (public) --

5 g UO2(NO3)2 of natural uranium
(depleted to 0.2 wt% U-235 from enrichment to 3.5 wt% U-235)

  (single exposure)

Delay        0 years: Dose: 22.51 mSv
Delay        1 years: Dose: 22.62 mSv

== 2.3 rem

Sincerely,
James Salsman

SHELTON Christopher A wrote:
> I validated your representation of the WISE code result of 182 mSv exposure
> from this type of exposure.  However, your statement about "only a 182 mrem
> exposure" is about as wrong as can be.  Perhaps you didn't notice that mSv
> is not mrem (typo?).   182 mSv corresponds to 18,200 mrem exposure (or 18.2
> rem).  As I read NRC regulations, this is about 4 times the legal limit for
> a radiation worker.  For any member of the public, it would be ~180 times
> the legal limit.
> 
> -----Original Message-----
> From: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl] On Behalf
> Of James Salsman
> Sent: Monday, June 13, 2005 3:53 PM
> To: radsafe at radlab.nl
> Subject: [ RadSafe ] WISE Uranium caluclators etc
> 
> 
> So, inhaling 5 grams of depleted uranium trioxide, or about
> 20 times the LD50/30 for rabbits, results in only a 182 mrem exposure,
> according to the calculator, without any mention at all of the chemical
> toxicity.
> 
> And people can't understand why I don't think it's such a
> great idea to "merely" have radiation safety professionals
> in charge of exposure decisions for heavy metals.
> 
> Sincerely,
> James Salsman
> 
> Copied from http://www10.antenna.nl/wise/uranium/rdcu.html :
> 
> -- Inhalation, using dose coefficients from ICRP 72 (public) --
> 
> 5 g UO3 of natural uranium
> (depleted to 0.2 wt% U-235 from enrichment to 3.5 wt% U-235)
> 
>   (single exposure)
> 
> Delay        0 years: Dose: 182.1 mSv
> Delay        1 years: Dose: 182.5 mSv
> 
> 
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