[ RadSafe ] CRT monitor radiation "scare" at Newark airport

Rees, Brian G brees at lanl.gov
Mon Dec 20 15:38:26 CST 2010

In old CRTs I have seen Ra-226 (and it's progeny) and have heard of K-40 being present as well, but don't have a reference at hand right now, I'll try and find one tomorrow.  

I would hope that the transport of an old CRT was of as much interest (read suspicion) as the rad hit... but I'm not holding my breath! 

Brian Rees

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Clayton J Bradt
Sent: Monday, December 20, 2010 2:32 PM
To: radsafe at health.phys.iit.edu
Subject: Re: [ RadSafe ] CRT monitor radiation "scare" at Newark airport

I've read several press accounts of this incident and they mention the FBI 
statement that "computer monitors normally emit small amounts of 
radiation".  I'm not aware of monitors having elevated levels of 
radioactivity.  Does anybody have better information on this?  CRT's of 
course generate x-rays but this monitor was packed in baggage so it was 
off.  Anyway, who travels with a CRT?  It must have been a LED monitor, 
probably a laptop.   This whole thing makes less and less sense.

Clayton J. Bradt
Principal Radiophysicist
NYS Dept. of Health
Biggs Laboratory, Room D486A
Empire State Plaza
Albany, NY 12201-0509

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