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RE: TLD badge dose
Were these pocket dosimeters calibrated for the x-ray
spectrum associated with baggage scanning units, e.g.,
120 keV max photons and low filtration?
--- "Flanigan, Floyd" <Floyd.Flanigan@nmcco.com>
wrote:
> Last week I ran a bunch of direct reading "pencils"
> through the x-ray machine at the security check
> point and checked them for accrued dose. 2 mRem was
> the average between 60 "pencils".
>
> Hope it helps.
>
> Floyd W. Flanigan B.S.Nuc.H.P.
>
> -----Original Message-----
> From: Wes Van Pelt [mailto:WesVanPelt@att.net]
> Sent: Friday, January 09, 2004 10:26 AM
> To: 'David Hornsey'; radsafe@list.vanderbilt.edu
> Subject: RE: TLD badge dose
>
>
>
> David and Radsafers,
>
>
>
> In my experience, a normal x-ray scan of carry-on
> baggage would give the luggage a dose of about 0.1
> mrad (0.001 mSv). So a dose of 0.14 mSv seems MUCH
> too high for routine luggage scans, even if the
> luggage were scanned several times.
>
>
>
> Regards,
>
> Wes
>
> Wesley R. Van Pelt, PhD, CIH, CHP
>
> Wesley R. Van Pelt Associates, Inc.
>
>
>
>
>
> Good morning Radsafe,
>
>
>
> An X-ray thickness gauge manufacturing
> company I work for in the UK
>
> sent three engineers to San Diego for training on a
> particular rig. All took
>
> the TLD badges they were issued with here.
> Unfortunately the Company they
>
> were working with in San Diego did not issue them
> with local monitoring.
>
> They all carried out similar work whilst in the
> States, but one of them came
>
> back with a badge reading of 1.4 mSv.
>
> .....
>
> So - is such a dose feasible for suitcase
> surveillance or could
>
> anything in the baggage compartment of a 'plane
> result in an actual dose or
>
> an artefact? Obviously not a real problem dose-wise
> unless it continues to
>
> show up on his badges, but any thoughts would be
> most welcome to satisfy
>
> both his and my curiosity.
>
>
>
> David Hornsey
>
>
>
> Radiation Safety
>
> South Building Annexe
>
> University of Bath
>
> Bath BA2 7AY
>
> 01225 386540
>
> e-mail:bssdjh@bath.ac.uk
>
>
>
>
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=====
+++++++++++++++++++
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-- John
John Jacobus, MS
Certified Health Physicist
e-mail: crispy_bird@yahoo.com
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