Re: Dose Rates from Patients -Reply -Reply

[Bill Pitchford <wpitch4d@IMAP2.ASU.EDU>]

If an individual is in an area with a rate of 101 mr/hr for 45 seconds 
there is a vast difference between that and 101 mr/hr for 45 minutes, but 
if those individuals spend no other time in that area in any one hour, 
they still do not enter a "high radiation area" per the regulations.
How often do practitioners spend major portions of hours in proximity to 
a given patient ? This is a still abbreviated explanation of my 
previous statement.

Bill Pitchford
Radiation Protection Facility
Arizona State University
Tempe, Arizona 85287-3501

On Wed, 10 Jul 1996, Keith Brown wrote:

> >>>>>>>>>>>>>>>
> Just one more glitch: It is 100 mr in one hour, not 100 mr/hr.
> 
> Bill Pitchford
> Radiation Protection Facility
> Arizona State University
> Tempe, Arizona 85287-3501
> 
> <<<<<<<<<<<<<<<
> 
> Since the regulation refers to radiation levels in an area, 100 mR/hr is
> different from 100 mR in one hour only for cases in which the radiation
> field changes on an appropriate time scale.  I believe the previous writer
> was correct (but for minor variations) in equating the two in this case.
> 
> Keith Brown
> kdb1@nrc.gov
> 
>