Re: ?? QA well counter

["CAPT Jerry A. Thomas, MSC, USN" <thomas@bob.usuf2.usuhs.mil>]

Bruce,

        I will send my thoughts along so that all can read and/or react to them.

        The QC I would suggest includes:

        Daily:  Constantancy check with known source (e.g. Cs-137)

        Quarterly:  Chi Square, verification of peak channel, verification
of HV setting.

        Annually:  Amplifier gain linearity.


JERRY THOMAS

At 14:54 5/13/96 -0500, you wrote:
>
>As long as I am asking, here is another question that if someone on
>Radsafe has time could they please answer.
>
>Thanks again, please respond to the E-mail address of the questionee
>(questioner?)
>
>
>Bruce Busby
>http://www.sph.umich.edu/~bbusby/
>
>---------- Forwarded message ----------
>
>From: ccmail.jkilling@ranch.state.nd.us
>
>Quality Assurance and Calibration for Wipe Test Counters:
>
>What quality assurance testing and calibration should be done on a well
>counter (Ludlum model 2200 ratemeter with scintillation probe)?  The
>counter is used when surveying for removable contamination in a nuclear
>medicine department.  Is just a daily constancy check sufficient, or is it
>desirable to perform periodic efficiency checks, annual calibrations, etc.?
>---------------------------------------------------------------------------
>
>Jim Killingbeck
>E-mail:  ccmail.jkilling@ranch.state.nd.us
>
>
>

CAPT Jerry A. Thomas,  MSC, USN
Chief Radiological Physics
Department of Radiology/Nuclear Medicine
Uniformed Services University of the Health Sciences
4301 Jones Bridge Road
Bethesda, MD  20814-4799

mailto:thomas@bob.usuf2.usuhs.mil
Phone:   (301) 295-3246
Fax:        (301) 295-3893