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Re: Dosimetry



Jim Abraham said the following:

> So the vender provides a service;
> you pay a set rate for that serivice;  after so much time, you request
> 1/3 the service. 

As I wrote earlier, the cost wouldn't be directly proportional to the 
increased or decreased frequency. For an example, if TLDs are worn 
for a monthly frequency, and this is changed to a quarterly frequency 
.. the cost will not drop down by 1/3 for the quarter. There is a 
carrying cost for the TLD. If the TLD is out in the field for 3 
month, or 6 months or as long as a year, it can not be used for 
another individual until returned. Therefore, other inventory is 
necessary to make up the variance in utilization potential. There is 
also the amortization required for lifetime use, etc. As stated, the 
cost could go up a bit for less use, but since the overall frequency 
exchanges are less, the overall cost is going to be less.

Film dosimeters have less to do with the inventory issue, but there 
are other considerations as well that demonstrate why wearing a film 
4 times a year instead of 12 times a year, why the cost per period 
isn't 1/3, as was suggested.



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Sandy Perle					Tel:(714) 545-0100 / (800) 548-5100   				    	
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