Re: Exposure to Phograhic Film in Airport X-ray Scanners

[Dan Marx <dmarx01@baker.edu>]

Recently I surveyed some courthouse scanners and my Victoreen 660 ion
chamber measured 28mR-40mR on various passes through the scanner.  What
am I missing?  That is greater than 1mR.  

Dan On Thu, 22 Jun 2000, Steven
H. Allen wrote:

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> Baggage is not allowed more than 1.0 mr/pass-through and external areas at
> 5cm from the surface of the baggage x-ray system are not to exceed
> 0.5mr/hr.  From my experience, the average dose to baggage put through US
> airport baggage x-ray systems is about 0.1mr/pass-through.
> 
> Gerald Nicholls wrote:
> 
> > Recently a message was posted on a list server devoted to photography
> > stating that a photographer preparing to board a plane was told by a
> > security staff member that his film would receive more exposure to
> > radiation during his transcontinental flight than it did from passing it
> > through the x-ray scanner.  A debate ensued as to whether or not the
> > statement made by the security staff member was correct.  The
> > photographic list server must be a very popular one since the debate
> > prompted calls to my office.
> >
> > Does anyone have any actual measurements of or references to the
> > exposure to objects sent through x-ray scanners at airports?
> >
> > An interesting aspect of the debate is that some well-traveled
> > photographers advocated keeping a role of fast ISO 800 or higher film to
> > show the security staff as they apparently are allowed to hand search
> > parcels containing high speed films rather than requiring that they be
> > passes through the scanner.
> >
> > Thanks.
> >
> > Gerald Nicholls
> > gnicholl@dep.state.nj.us
> > 609-633-7964
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DAN L. MARX
dmarx01@baker.edu
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