RE: Looking for portable source-check holder

["Harmon, Terry O'Devah (ONF) " <onf@bechteljacobs.org>]

Here at the Oak Ridge K-25 site,  we have a Cs-137 Source check for checking
the Micro-R meters here.  The setup is simple.  the source is mounted on the
inside end of a metal box.  The bottom of the box slides out, putting the
source at a distance to the box.  The meter butts up against the open end of
the box while the source slides away.  The range distance has been
calculated for each scale of the meter.  The "X" scale is marked on the
bottom.  Simply slide the source out until the proper scale is shown and
take your measurement.  It would probably only take about an hour to build
the box.  I don't remember what the activity of our source is, but the box
is about 1 meter long (2 meters if the bottom is slid out all the way).

> -----Original Message-----
> From:	Glen.Vickers@ucm.com [SMTP:Glen.Vickers@ucm.com]
> Sent:	Monday, March 29, 1999 6:31 PM
> To:	Multiple recipients of list
> Subject:	Looking for portable source-check holder
> 
> I am looking for a portable beta source-check holder which might hold 5
> disk
> sources.  I could imagine a plexiglass bar approximately 7 or 8 inches
> long
> with Tc-99 sources in a line.  The 5 sources would permit me to check 5
> different scales.  I could possibly imagine a single source and rotating
> filter, but I'm not sure that would be too durable.  
> 
> I'm looking to 10 to 12 commercially available units within the next 60
> days
> if possible.  These would be carried by personnel performing source checks
> on "rounds".
> 
> I am also looking for a small source check table for source checking all
> the
> ranges on a micro-rem meter.  Range of operation is 0 uR to 200 mrem/hr
> with
> 5 scales.  Probable source would be Cs-137.  This unit would be stationery
> and reside in the calibration facility
> 
> Such a units should be relatively easy to make; however, our shop is too
> busy at this time and I need to move forward with program improvements.
> 
> Any good experiences out there?
> 
> Sincerely,
> Glen Vickers
> glen.vickers@ucm.com
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