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RE: Radiography HP
I enjoy this trend for one reason: We are discussing on potential solutions
to minimize doses to a group of "nuclear" worker who receive a steady amount
of doses per year but in a strange distribution:
>From Health Canada , Sont and Ashmore (National Registry Doses-2000,
Radiation Protection Bureau), Industrial radiographers receive either below
2 mSv or more then 5 mSv with some number of persons in the 20-50 mSv
region. Average dose, out of 2410 workers is 2.67 mSv (only 3 other
categories of workers have the same average, and they are in the fuel
handling, maintenance in reactor ...and industrial radiographers IN power
reactors)
This is another way of summarizing the excellent point William Lipton
brought:
1. This industry is a cutthroat industry and NO device alone can prevent an
individual to cut corners. The problem is that if they don't cut corners,
the contractor may loose some contracts, this is the reality of the
business. The concept of due diligence does not help either. If you fine the
individual, you should be able to fine the company because the put pressure
on the individual to perform. But this is not easy to prove...
2. People can make the difference, but perhaps they need "regulatory
incentives". You have (still accoding to Sont and Ashmore) 74% of the
radiographers below 2 mSv. But of course you are likely to ear in the
newspapers about the 26 % ....
3. A radiation survey meter to perform an industrial gammagraphy SHOULD BE
AS NATURAL as using proper protective equipment (fall protection,
respiratory etc.) but for some individual, it is NOT. Is it culture, is it
training? Who on this list, be walking with a 100 Ci source, stick it in and
out of shielding without a properly working survey meter ? Well I see some
industrial radiographers do exactly that. Not the majority, but again the
one you may read about in newspapers...This is why I have a program on site
to audit our X-ray contractors and I am making sure that I know when they
come in...
It is about time that we see such mention as "radiography HP"...
My opinion only, from an "ex-inspector" perspective...
Stephane Jean-Francois, Eng., CHP,
Specialiste en radioprotection-Radiation Safety Specialist
Gestion des risques-Risk Management
Merck Frosst Canada et Cie,
514.428.8695
Fax:514.428.8670
stephane_jeanfrancois@merck.com
http://www.merckfrosstlab.ca
-----Original Message-----
From: Ted de Castro [mailto:tdc@XRAYTED.COM]
Sent: Thursday, May 30, 2002 1:56 PM
To: Perrero, Daren
Cc: 'William V Lipton'; RADSAFE@list.vanderbilt.edu
Subject: Re: Radiography HP
I see the problem is that it is currently all handled by administrative
controls (laws, training, procedures etc.) and therefore in the most
basic sense - voluntary. All these administrative controls can be as
easily forgotten or ignored.
All the problems cannot be solved by hardware controls but I do not
think any hardware control has even been attempted. There need to be
some minimum equipment standards with better built in control.
We keep hearing about accidents where the source disconnects from the
cable or is otherwise improperly stowed. Surely this can be improved or
tested for. Better connection and or a mechanical sense of the source
actually settling home.
I suspect a source powered "HOME" indicator could be made.
The unstowed source accidents are the big accidents and I truly think
that imaginative and motivated people can find hardware solutions to
those problems.
This leaves us with administrative controls for the "lesser offenses"
which seem to result in exposures that violate limits - but not the
individual - at least immediately.
"Perrero, Daren" wrote:
>
> What do you perceive as the major problems? What are your suggestions for
> correcting them?
> I am all ears.
> The thoughts expressed are mine, mine, all mine!
> I'm with the government, I'm here to help........
> Daren Perrero, Health Physicist
> perrero@idns.state.il.us
>
> -----Original Message-----
> From: William V Lipton [mailto:liptonw@DTEENERGY.COM]
> Sent: Thursday, May 30, 2002 5:55 AM
> To: AndrewsJP@AOL.COM
> Cc: tdc@XRAYTED.COM; HustonThomasE@UAMS.EDU; RADSAFE@list.vanderbilt.edu
> Subject: Re: chirper
>
> So let's stop looking for the Blue Light Special on chirpers, and talk
about
> how we can get the regulators and licensees to take radiography hp
> seriously.
>
> The opinions expressed are strictly mine.
> It's not about dose, it's about trust.
> Curies forever.
>
> Bill Lipton
> liptonw@dteenergy.com
>
>
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