[ RadSafe ] Portal Monitors

Hoffman, Daniel E Daniel.Hoffman at covidien.com
Tue Dec 18 09:54:56 CST 2007

Dear RadSafers --
I am in search of information concerning portal monitors capable of
detecting gamma radiation from nuclides that decay via EC; therefore
traditional gas flow proportional detectors are not appropriate.  At our
facility we have older "Gamma 60" units with plastic scintillation
detectors that were manufactured by National Nuclear Corporation.
However, parts for these units have become increasingly difficult to

If anyone has recommendations on available systems to supplement or
replace our existing units please contact me.  I would also be
interested in any positive or negative experiences that folks have had
with specific manufacturer's units. 

Thank you.

Dan Hoffman

Daniel E. Hoffman, CHP, CSP, CHMM
Radiation Safety Officer 
2703 Wagner Place
Maryland Heights, MO 63043
314-654-7906 (office)
daniel.hoffman at covidien.com

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