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RE: chirper
If they do not use them, do not change the batteries/check the batteries, or
turn them on, then it does not matter what they use or is a regulatory
requirement.
Just my 2 cents.
Randy Redmond
BWXT Y-12 L.L.C.
Y-12 National Security Complex
Radiological Control Organization
Email: rxq@Y12.doe.gov
Phone: 865-574-5640
Fax: 865-574-0117
> -----Original Message-----
> From: AndrewsJP@AOL.COM [SMTP:AndrewsJP@AOL.COM]
> Sent: Wednesday, May 29, 2002 10:46 PM
> To: liptonw@DTEENERGY.COM; tdc@XRAYTED.COM
> Cc: HustonThomasE@UAMS.EDU; RADSAFE@list.vanderbilt.edu
> Subject: Re: chirper
>
> In a message dated 5/29/02 10:08:35 AM Pacific Daylight Time,
> liptonw@DTEENERGY.COM writes:
>
>
>
>
> . It now seems to be people comparing notes on where to find the
> cheapest "chirper." Two points: (1) As I noted in an earlier post,
> 10 CFR 34
> requires radiographers to use "an operating alarm ratemeter," NOT a
> chirper.
> These devices are required to alarm at a preset dose rate. Many of
> them also
> alarm on integrated dose. The better models can also generate a
> time versus dose
> rate histogram, which is invaluable for accident investigation. (2)
> These
> radiography licensees are generally not "mom and pop" operations,
> although they
> are sometimes very stingy regarding safety expenditures. They
> should be buying
> state of the art instrumentation, training their people on its
> proper use, AND
> enforcing safety requirements.
>
> The opinions expressed are strictly mine.
> It's not about dose, it's about trust.
> Curies forever.
>
> Bill Lipton
>
>
>
>
> Bill, you are right, of course. But, all these devices will not do what a
> chirper will do, and that is prevent an overexposure. The alarming device
> is after the fact. The chirper is an ongoing monitor that is on the
> radiographer. When things go wrong, and they will, the chirper will give
> a warning that the other devices will not (unless they chirp, too) and the
> radiographer can then take the appropriate actions, including surveys that
> are needed to recover. When I had radiographers, they wore chirpers in
> addition to the other requirements. They also understood that if they did
> not wear them, they would be fired on the spot. The chirper was an
> absolute requirement to prevent incidents causing overexposures.
>
> John Andrews
> Knoxville, Tennessee
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