[ RadSafe ] Canberra I-Solo Procedure

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

Erik,

I have used the I-Solo air sampling system. In the past, I was tasked
with using only the detector for field analysis of disc smear samples. I
was writing a sample counting procedure while employed with another
company. That procedure is not complete, but I may be able to locate
what I have. It is possible to use the PIP detector to count non-air
samples, though you may have to modify the air intake system. You have
to be a fairly good electronic/meter techno-type (and have a detailed
copy of Canberra's I-Solo technical manual). The detector can be used to
acquire alpha spectra without a vacuum, but you have to manually
calculate a correction factor based upon the detector geometry, the
counting geometry, and the desired MDA of what radio-nuclide you are
looking for. What you will eventually get is an out put in counts that
must be corrected by the efficiency/CF's you calculate. Since the
software uses the system as designed, I am not sure if you can use it to
find the amount of alpha activity on your air/smear samples.

If you have received other response to this inquiry, please send them
out to the list.

John Dixon

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu
[mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of
Nielsen.Erik at epamail.epa.gov
Sent: Wednesday, November 10, 2010 2:18 PM
To: radsafe at health.phys.iit.edu
Subject: [ RadSafe ] Canberra I-Solo Procedure

Does anyone currently use the Canberra I-Solo for field or fixed 
laboratory analysis?  Do you have a published procedure on how you use
the 
instrument? calibrate the instrument?

I would like to know what works for your application of this equipment.

We are writing up operational procedures and would like to see what
others 
are doing.
Would you share your procedure with me?

Erik C. Nielsen
Health Physicist
USEPA, National Air and Radiation Environmental Laboratory
540 South Morris Ave.
Montgomery, AL 36115
Phone 334-270-3475
Fax 334-270-3454

"The sun formed 4.5 billion years ago, but it's got 6 billion more
before 
the fuel runs out. Any creatures witnessing the sun's demise 6 billion 
years hence, here on Earth or beyond, won't be human - they'll be as 
different from us as we are from bacteria."
Martin Rees, Baron Rees of Ludlow, President of the Royal Society of 
London for the Improvement of Natural Knowledge.
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