[ RadSafe ] Activity versus dose/exposure

[Dan W McCarn]

Dear Franz:

 

I am, and I'm sure that most of our colleagues are aware of that. As it
turns-out, there are rules for such things in the Contaminated Territories.
1) Don't eat the berries; 2) Don't drink the milk; and 3) Don't eat the
mushrooms. These three items reduces internal dose by over 90% according to
my colleagues at Sosny Labs near Minsk.

 

My study in the San Luis Valley includes internal dose as well as external. 

 

http://www-pub.iaea.org/MTCD/publications/PDF/te_1396_web.pdf

 

1.       McCarn, Dan W. (2004): Scoping Calculations: Natural and
anthropogenic multi-pathway risks associated with naturally occurring
uranium mineralization in aquifers; IAEA-TECDOC-1396
<http://www-pub.iaea.org/MTCD/publications/PDF/te_1396_web.pdf> ,
pp.289-315.

 

Dan ii

 

--

Dan W McCarn, Geologist

108 Sherwood Blvd

Los Alamos, NM 87544-3425

+1-505-672-2014 (Home - New Mexico)

+1-505-670-8123 (Mobile - New Mexico)

HotGreenChile at gmail.com (Private email) HotGreenChile at gmail dot com

 

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu
[mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of
franz.schoenhofer at chello.at
Sent: Wednesday, June 22, 2011 10:49
To: The International Radiation Protection (Health Physics) Mailing List;
The International Radiation Protection (Health Physics) MailingList
Subject: Re: [ RadSafe ] Activity versus dose/exposure

 

Carol et al.,

 

It seems that there is a fundamental misunderstanding among many (most???)
RADSAFErs. The dose after a nuclear contamination is only to a small
percentage due to direct gamma-ray exposure, more important from inhalation,
but overwhelmingly due to ingestion.

 

Gamma-ray Dose Constants will not help to determine the dose after a nuclear
accident. Additionally the contribution from alpha- and beta emitters may
play an important role, depending on the circumstances of the accident. 

 

This is one of the lessons I learnt after the Chernobyl accident. 

 

Do you have data on food contamination around Fukushima and the diet of
people living there? I doubt.

 

Franz

 

 

 

---- Carol Marcus <csmarcus at ucla.edu> schrieb:

> 

> Dear John:

> 

> It's called the "Specific Gamma-ray Dose Constant" and you can find a 

> table of them on pp 6-10 to 6-14 in the third edition (1998) of 

> Schleien, Slaback, and Birky's "Handbook of Health Physics and 

> Radiological Health".

> 

> Carol S. Marcus, Ph.D., M.D.

> Depts. of Radiation Oncology and of Radiological Sciences

> David Geffen School of Medicine at UCLA

> 

> At 08:40 AM 6/22/2011, John Gerald Center, Jr wrote:

> >Is there any sort of quick reference guide available that compares 

> >the activity of different radioisotopes to expected dose/exposure 

> >for that isotope?

> >

> >Thanks in advance,

> >

> >John

> >--

> >John G. Center, Jr.

> >Radiation Safety Officer

> >3922 Wood Hall

> >Western Michigan University

> >1903 W. Michigan Ave.

> >Kalamazoo, MI  49008-5410

> >

> >Office (269) 387-5933

> >Cell  (269) 744-0996

> >E-mail: john.center at wmich.edu

> >Fax  (269) 387-5888

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--

Franz Schoenhofer, PhD, MinRat

Habicherg. 31/7

A-1160 Vienna

Austria

mobile: ++43 699 1706 1227

 

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