Wolf Creek Radiation Survey Methods procedure uses:
1 mREM/hr Beta smearable = 25K
DPM/100cm2.
Ron Ayers
Wolf Creek
Burlington, Kansas
From: [email protected] [mailto:[email protected]] On Behalf
Of [email protected]
Sent: Tuesday, September 27, 2011 5:15 PM
To: [email protected]
Cc: [email protected]
Subject: Powernet: Off Scale Count Rate Instrument Rules of Thumb
Palo Verde requests information on the following:
If a count rate instrument's reading exceeds the measurement capability
(i.e., off-scale), do you use or have a thumb rule to convert dpm to
mrad? I have seen some mrad to dpm conversions such as 25,000, 28,000,
and 50,000 dpm per mrad; however, I have not seen any technical
justification or limitations for these thumb rules.
If you have such guidance in your program what value do you use? Do you
have any precautions or limitations for the thumb rule usage, e.g.,
qualitative measurement only, specified measurement height above smears,
etc.
Thanks, Seth
**********************************************************************
Seth J. Kanter, CHP, RRPT
Sr. Health Physicist
Palo Verde Nuclear Generating Station
Mail Sta. 7397
5801 S. Wintersburg Rd.
Tonopah, AZ 85354
Phone (623) 393-3130
Fax (623) 393-1853
Unless otherwise noted, all opinions are my own
Liviu Librescu
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