RE: 30 mCi of I-131

[BLHamrick@aol.com]

In a message dated Mon, 12 Jun 2000  7:38:29 AM Eastern Daylight Time, "Tonry, Louie L MAJ EAMC" <Louie.Tonry@se.amedd.army.mil> writes:

<< The reference is in the NCRP 37.  This philosophy is also carried forward
into the new set of regulations allowing release of patients with much
greater than 30 mCi.>>

Actually, the 30 mCi value is not found in NCRP 37 for I-131.  I-131 releases in that publication are limited at the 8 mCi and 80 mCi levels.

Barbara L. Hamrick
BLHamrick@aol.com

Lou

        Louie L. Tonry
        LOUIE TONRY, CHP
        MAJOR, MS
        Chief, Radiation Protection Division
 
Eisenhower Army Medical Center 
ATTN: MCHF-LOG-HP (Radiation Protection), Box 264
Ft. Gordon, Georgia 30905-5650

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-----Original Message-----
From: Michael Stabin [mailto:stabin@npd.ufpe.br]
Sent: Saturday, June 10, 2000 3:48 PM
To: Multiple recipients of list
Subject: 30 mCi of I-131



Does anyone have a **documented** reference on which the release criterion
of 30 mCi for I-131 therapy patients, employed for so many years, was based?
We are trying to cite this in a paper, and need an objective reference if
possible.  I remember hearing once that it was based on some real
calculations, regarding contact of the radioactive patient with the public
and family members, occupancy factors, etc., but I can't find the specifics
of this calculation, if it exists, or the source.  (I am aware of the newer
Nureg and RegGuide on this subject, but we want to reference this earlier
standard in our discussion.)  Thanks in advance for any help.



Michael Stabin, PhD, CHP
Departamento de Energia Nuclear/UFPE
Av. Prof. Luiz Freire, 1000 - Cidade Universitaria
CEP 50740 - 540
Recife - PE
Brazil
Phone 55-81-271-8251 or 8252 or 8253
Fax  55-81-271-8250
E-mail stabin@npd.ufpe.br

"Quantum Mechanics: The dreams stuff is made of"
- Steven Wright



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