[ RadSafe ] RE: IRF - NUREG 4884

[John R Johnson]

Wes

I don't know the reason. I am listed as an author, but my input was through
Fisher (a colleague at PNNL).

John

-----Original Message-----
From: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl]On
Behalf Of Wesley
Sent: August 20, 2005 6:09 AM
To: BLHamrick at aol.com; alstonchris at netscape.net;
Perrero at iema.state.il.us; radsafe at radlab.nl
Subject: RE: [ RadSafe ] RE: IRF - NUREG 4884


Barbara and All,



Thanks for your research showing that I-125 can be produced in an
accelerator. However, I believe essentially all I-125 sold and used in the
US originates in a nuclear reactor. And of course, the original question of
why I-125 is missing in NUREG-4884, "Interpretation of Bioassay
Measurements", would derive from reasoning on or before its publication date
of 1987. This is well before International Isotopes in Texas was
contemplating producing I-125 in its linear accelerator (LINAC.)



So, I am still puzzled as to why I-125 was omitted from NUREG-4884. There
are 10 original authors, one or more of whom may be reading RADSAFE. They
are: Lessard, Yihua, Skrable, Chabot, French, Labone, J. R. Johnson, Fisher,
Belanger and Lipsztein. Any of you wish to comment?



Wes



Wesley R. Van Pelt, PhD, CIH, CHP <mailto:WesVanPelt at att.net>

Wesley R. Van Pelt <http://home.att.net/~wesvanpelt/Radiation.html>
Associates, Inc.



  _____

From: BLHamrick at aol.com [mailto:BLHamrick at aol.com]
Sent: Saturday, August 20, 2005 1:01 AM
To: wesvanpelt at att.net; alstonchris at netscape.net; Perrero at iema.state.il.us;
radsafe at radlab.nl
Subject: Re: [ RadSafe ] RE: IRF - NUREG 4884



<<In a message dated 8/19/2005 2:10:04 P.M. Pacific Standard Time,
wesvanpelt at att.net writes:

Good guess, but I-125 is not accelerator produced. It comes from a
reactor.>>





Actually, DOE says it may be accelerator produced
(http://web.em.doe.gov/idb96/tab71.html).



And, from a press release from company called International Isotopes in
Texas:



"These major advances position the Company to initiate production and sale
of products from the LINAC beginning early in the fourth quarter of 1998",
according to Ira Lon Morgan, Ph.D., Chairman and Treasurer of International
Isotopes Inc.  The radioisotopes that are initially planned for production
include I-125, Tl-201, I-123, Pd-103, Co-57, Co-60, Ir-192, Sr-89, Y-90, I-
131, In-111, Ga-67 and F-18."



But, as I said, the issue is reasonably moot at this point, since this
material is now under the umbrella of the AEA.



Barbara

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