RE: U-235 Weight Percent for Natural Uranium

["Potter, Gus" <capotte@SANDIA.GOV>]

Try this also:



http://www.eh.doe.gov/techstds/standard/std1136/STD11362000.pdf



Table 2-1



Gus



C. A. Gus Potter, Ph.D., C.H.P.

Sandia National Laboratories

Albuquerque, New Mexico

(505) 844-2750

capotte@sandia.gov



This cause of exploration and discovery is not an option we choose; it is a

desire written in the human heart. We are that part of creation which seeks

to understand all creation. We find the best among us, send them forth into

unmapped darkness, and pray they will return. They go in peace for all

mankind, and all mankind is in their debt.

(G. W. Bush)





-----Original Message-----

From: Mike Zemyan [mailto:mzemyan@schaferlabs.com]

Sent: Tuesday, April 29, 2003 1:42 PM

To: radsafe@list.vanderbilt.edu

Subject: RE: U-235 Weight Percent for Natural Uranium





29 April 2003



This topic was addressed in the following publication:

"Isotopic fingerprints for natural uranium ore samples",

International Journal of Mass Spectrometry 193 (1999) 9-14, S. Richter et

al.



The authors included the following suggestions for the ranges of natural

variations in uranium atomic percentages:

234U:   0.0054 -  0.0051

235U:   0.7207 -  0.7201

238U:  99.2748 - 99.2739



Michael Zemyan

Schafer Vallecitos Laboratory

Sunol, CA



-----Original Message-----

From: owner-radsafe@list.vanderbilt.edu

[mailto:owner-radsafe@list.vanderbilt.edu]On Behalf Of Redmond, Randy

(RXQ)

Sent: Tuesday, April 29, 2003 10:11 AM

To: 'radsafe@list.vanderbilt.edu'

Subject: U-235 Weight Percent for Natural Uranium





Has anyone seen a document/regulation that states a range for U-235 weight

percent in natural uranium?  Seems like I ran across something years ago,

but cannot locate.



Randy Redmond

Radiological Control Organization

BWXT Y-12 L.L.C.

Oak Ridge, TN

865-574-5640





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