Re: Asking for opinions -Reply

["Robert Denne" <rdenne@worldnet.att.net>]

Higher exposure?  What are we talking about here?  Are we cutting microRem,
mRem, Rem?

In the grand scheme of a power plant facility that is dealing with
individual doses in the Rem for the year range, it definitely makes sense to
take the TLD's home.  Those that are dealing with yearly doses that are very
low (less than 500 mRem) may want a different set of controls depending on
what it is they are measuring.

We could be trying to attach too much science to this stuff and procedurally
committing to too much.

I agree here.  One program for your occupational workers.  The NRC gives us
5 Rem per year to play ALARA with.  The "R" is large in this.  Let's not
make this so complicated that we give the lawyers the impression we are
overly concerned about a few milliRem of fade.

Bob Denne
ATG

rdenne@worldnet.att.net
----- Original Message -----
From: <L_K_II_Les_Aldrich@RL.gov>
To: Multiple recipients of list <radsafe@romulus.ehs.uiuc.edu>
Sent: Thursday, September 16, 1999 1:25 PM
Subject: RE: Asking for opinions -Reply


> All TLDs go home.
> Higher exposure workers - what's the question?
> You are welcome to your opinion on annual TLDs.  Personally, I'm trying
> to get everyone possible on an annual TLD.
> Normal fading is corrected for by routine dosimeter processing protocol.
> Higher exposure employees wear either quarterly or monthly dosimeters,
> which have lower fading than the annual dosimeters.  Again, the routine
> dosimeter processing protocol corrects for fading (based on the period
> the dosimeter is worn).
> As to your lawyer statement - interesting emotional comment, is there
> any technical information you have to back it up?
>
> Les Aldrich
>
> > -----Original Message-----
> > From: William V Lipton [SMTP:liptonw@dteenergy.com]
> > Sent: Thursday, September 16, 1999 12:17 PM
> > To: Multiple recipients of list
> > Subject: Re: Asking for opinions -Reply
> >
> > Your response raises more questions than it answers:
> >
> > Do you only let annual TLD's go home?  If all TLD's go home what about
> > your
> > higher exposure workers?  I question the wisdom of an annual TLD.
> > Normal
> > fading would seem to raise validity questions.
> >
> > How do you handle the fading issue for higher exposure employees?
> >
> > There are a lot of lawyers out there who would love to hear about
> > you.
> >
> > The opinions expressed are strictly mine.
> > It's not about dose, it's about trust.
> >
> > Bill Lipton
> > liptonw@dteenergy.com
> >
> > L_K_II_Les_Aldrich@RL.gov wrote:
> >
> > > I've been working at this site for 20 years and have been
> > responsible
> > > for the external dosimetry program for most of the site for the last
> > 3
> > > years.  We have been taking our dosimeters home for that entire
> > period,
> > > and I don't see any evidence of loss of control.
> >
> > ...
> >
> > >
> > >
> > > With 5,000+ employees wearing dosimeters, we average 5-10 cases a
> > year
> > > where non-occupational doses show up on the dosimeters.  In
> > addition,
> > > there are 15-20 employees who wear their dosimeters to work
> > immediately
> > > after having medical radionuclide injections - those are easy to
> > detect,
> > > they set off every portal monitor they get close to.
> > >
> > > I once did a calculation on the hot dashboard fade for one of our
> > annual
> > > dosimeters, based on temperatures encountered on dashboards in this
> > > area, and concluded that we lose, at most, 60% of the recorded dose.
> > > Only employees expected to receive 100-200 mrem/y wear annual
> > > dosimeters, so the lost dose would be between 60 and 120 mrem,
> > maximum.
> >
> > **********************************************************************
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