[ RadSafe ] outdoor low dose rate measurements

[Howard Long]

Howard 


On Apr 3, 2013, at 12:53 PM, radbloom at comcast.net wrote:

> 
> 
> John, 
> 
> 
> 
> We used to report most of our measurements as < 0.05 mR/h , or <0.05 mrad/h  because the meters and detectors  we used fluctuated significantly bel ow this tick mark.  I strongly suggest walking around with your survey meter  to see if you can easily discern the levels you  want your user to see.  What kind of meter/detector will be used? 
> 
> 
> 
> Good luck. 
> 
> 
> 
> Cindy   
> 
> 
> 
> ----- Original Message -----
> 
> 
> From: "JOHN RICH" <JOHN.RICH at sargentlundy.com> 
> To: radsafe at health.phys.iit.edu 
> Sent: Wednesday, April 3, 2013 3:39:15 PM 
> Subject: [ RadSafe ] outdoor low dose rate measurements 
> 
> Radsafers 
> 
> I just finished a calculation that's going to require a minimally trained 
> individual (not a radworker)  to notice the difference between 0.03 
> mrad/hr and 0.13 mrad/hr on a handheld meter while walking around an 
> outdoor storage area. I'm stressing that this is a calculated result 
> because it's the maximum calculated difference. The minimum calculated 
> difference is between 0.02 mrad/hr to 0.04 mrad/hr. Actual dose rates 
> should fall somewhere in between. 
> 
> Is this a reasonable expectation, or is it asking too much of an outdoor 
> walk-around with a hand held meter?  BTW, I have no idea what the radon 
> conditions are. 
> 
> thx in advance  - -jmr 
> 
> John Rich 
> 312-269-3768 
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