RE: Personal Contamination Goals

[glen.vickers@exeloncorp.com]

Try calling your neighborhood nuclear power plant.  Each plant already has
some form of metric in these areas for INPO.  You might include a risk
factor for contaminations as well.  For instance, on a good day of steam
generator work at a PWR, a couple of guys will have a few dpm on them and
that is not unreasonable for the work they are performing; however, if it is
a clean-area contamination or if the job is low-risk, then the contamination
may be significant and should count against your performance metric.
Situations for high-risk work usually don't count against the contamination
metric unless the contamination is significant or a rad worker performance
issue.  

Many utilities also don't count contaminations on modesty garments as well.
Often times, workers just wearing protective clothing without really working
in a contaminated area will have low levels of contaminants on their modesty
garments.  Such a case wouldn't count against the contamination metric.

Once again, call around and you'll find a bit of variance, but all of the
programs should be somewhat similar for personnel contamination metrics.
I'm sure someone already has some Microsoft Access dB for tracking such
metrics that you could probably use.

As far as rad material controls, a goal of zero events should be reasonable,
but some plants might set a goal at one just to insulate themselves from the
one odd ball event that might occur every other year.  This metric is
totally dependent on the type of facility you have, the free-release program
requirements, experience of rad workers, etc.   If you have recently
implemented a gamma sensitive tool monitor, you will find material that has
been released with a GM frisker that will alarm the tool monitor.  These
cases do not generally count against a metric, but are most certainly
documented in the corrective actions program.

At a minimum, make sure your goals are near the mean value of similar
facilities.  This would be a good first stab at the cost/benefit analysis as
to where to set the goal level.


Glen Vickers
glen.vickers@exeloncorp.com

> -----Original Message-----
> From:	Mike Davidson [SMTP:DAVIDSON@gtsduratek.com]
> Sent:	Wednesday, December 06, 2000 10:27 AM
> To:	Multiple recipients of list
> Subject:	Personal Contamination Goals
> 
> Greetings Radsafers.
> 
> I am working to establish a meaningful metric for the number of personal
> skin and clothing contaminations at a facility.  I am leaning towards a
> "personal contamination rate" (contaminations per man-hour worked in
> radiologically controlled areas) per rather than just number of contams.
> Questions:
> 
> 1.  Any further suggestions or examples of a weighted tabulation based
> upon total hours worked?
> 
> 2.  What would an appropriate goal value be for an effective materials
> control program?  Obviously, zero is a desirable goal, but rarely
> attained.  I am looking for a realistic benchmark based upon rates in
> well-maintained programs.
> 
> Thanks and happy holidays!
> Mike
> 
> Mike Davidson
> GTS Duratek
> 10100 Old Columbia Road
> Columbia, MD 21046
> 410.312.5121 voice
> 410.290.8734 fax
> davidson@gtsduratek.com
> 
> ************************************************************************
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> information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html


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