Re: Personnel Monitoring Queston

["Sandy Perle" <sandyfl@earthlink.net>]

> the life-time dose for the whole 
> body is the sum of ALL collar badges, and any other area, worn for 
> a specific wear period. 

Let me clarify the point I was making above, since I believe that I 
may have not stated it properly. If an individual wears 2 whole body 
dosimeters (chest and collar) the highest single badge is used for 
reporting the DDE (whole body dose) for that time period. This is 
done each and every time multiple dosimetry is worn. IF the 
computer system is sophisticated enough, each body area can be 
independently tracked, and the highest body area can then be 
reported, for a QTD, YTD or lifetime value. Generally, the 
conservative approach, and the easiest for the computer is to take 
the highest dosimeter for each period, and sum them.

Prior to your facility using the EDE calculation, the collar badge 
represented the maximum DDE or whole body dose. As you said, 
on your dose report, each dosimeter is tracked independently, and, 
you also get the calculated dose weighted result. The lifetime for 
the calculation is still only a part of the lifetime dose, and the rest 
of it has to come from the previous lifetime dose from whatever 
method you used to derive the "highest body location" derived dose.

I hope this makes a little more sense.

------------------------
Sandy Perle
E-Mail: sandyfl@earthlink.net
Personal Website: http://www.geocities.com/capecanaveral/1205

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