[ RadSafe ] FW: Elimination of Cs-137 Irradiators in the US.

Perle, Sandy sperle at mirion.com
Wed Apr 30 14:15:38 CDT 2008

All I can say is, LUDICROUS!



Sander C. Perle 
Mirion Technologies, Inc., Dosimetry Services Division 
2652 McGaw Avenue
Irvine, CA 92614


Tel: (949) 296-2306 / (888) 437-1714 Extension 2306 

Fax:(949) 296-1144


Mirion Technologies: http://www.mirion.com/ 

Global Dosimetry Solutions:  <http://www.dosimetry.com/>



-----Original Message-----
 The National Academy of Sciences (NAS) has published recently a report
in which they recommend the complete elimination of Cs-137 irradiators
in the United States.  The published report can be downloaded for free
from the National Academies Press web site at:


Attached are pages 98 and 99 of that report which talks in particular
about Cs-137 irradiators used for calibration systems.  This is the part
that concerns NIST in particular and customers form NIST that use Cs-137
irradiators (page 98 seems to suggest that most of the applications are
medical only for which Cs-137 is not used).

The Nuclear Regulatory Commission (NRC) is collecting input from the
user community.  However there is a strong interest from Congress to do
something fast to eliminate the use of Cs-137 irradiators in the US.  We
have sent a letter to the NRC this past week expressing our concerns
about implementing these recommendations.  To my knowledge The Radiation
Research Society is also collecting data to forward their comments to
the NRC (see message below).  

It is important that all agencies and groups affected by this express
their opinions or concerns ASAP.  Comments can be sent to: 

1) The Office of Federal and State Materials and Environmental
Management Programs (FSME) which is coordinating the response to this
issue as well to those raised by the NAS report.  Their contact
information is:

Dr. Charles Miller, Director
Office of Federal and State Materials and Environmental Management
Programs (FSME)
Mail Stop T8-A23
Washington, DC 20555
and also to 

2) Contact at NRC.

Dr. Cynthia Jones
U.S. Nuclear Regulatory Commission
Office of Nuclear Security & Incident Response
Mail Stop T4-D22A
Washington, D.C. 20555
cynthia.jones at nrc.gov

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