[ RadSafe ] Regarding Greenpeace calculation of doses from Fukushima

[Dixon, John E. (CDC/ONDIEH/NCEH)]

The use of the HOTSPOT code would not be appropriate for estimation of doses (aka, health effects) from the releases that occurred from the Fukushima reactors. The dispersion patterns were far to complex. For example, the wind patterns were not in just one direction, but all directions (360 degrees) because Japan is an island.

I would also not give Greenpeace much credence on this subject.

I would consult NARAC directly and find out which models (LaGrange based) they were asked to run for the kind of information which you seek.

Regards,
John E. Dixon, CHP

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Victor Anderson
Sent: Tuesday, March 12, 2013 9:57 PM
To: Mattias.Lantz at physics.uu.se; 'The International Radiation Protection (Health Physics) MailingList'
Subject: Re: [ RadSafe ] Regarding Greenpeace calculation of doses from Fukushima

Yes,

I have used it a lot.  What do you need to know?

Victor

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu
[mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Lantzelot
Sent: Monday, March 11, 2013 7:22 PM
To: The International Radiation Protection (Health Physics) Mailing List
Subject: [ RadSafe ] Regarding Greenpeace calculation of doses from Fukushima

Is there anybody on the RADSAFE list that has experience with the use of the Hotspot code? ( https://narac.llnl.gov/HotSpot/HotSpot.html)

As probably known to most of you Greenpeace grabs whatever media attention they can get (succeeding remarkably well in some countries), claiming that the recent WHO health effects study on Fukushima is covering up the true dose rates. Once again they refer to "independent nuclear expert" Oda Becker, her report after using Hotspot is here:
http://www.greenpeace.org/international/Global/international/briefings/nucle
ar/2013/2012_OdaBecker.pdf

 From her previous reports there is no reason to trust anything she says, but it would be nice if anybody fluent with the code (and who knows it capabilities and limitations) can check the numbers and point out any flaws in Becker's calculations.

Best wishes,
Mattias Lantz

--
Mattias Lantz - Researcher
??? ?????
Department of Physics and Astronomy
Division of Applied Nuclear Physics
Uppsala University, Box 516
SE - 751 20, Uppsala, Sweden
email:  mattias.lantz at physics.uu.se


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