[ RadSafe ] "war stories" re: SEM radiation issues?

George Andrews gandrews at ntplx.net
Fri Oct 28 13:26:26 CDT 2016

Maybe it is a revenue issue. Registration fees because they do produce
ionizing radiation.

George Andrews

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu
[mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Ted de Castro
Sent: Friday, October 28, 2016 2:07 PM
To: The International Radiation Protection (Health Physics) Mailing List
<radsafe at health.phys.iit.edu>
Subject: [ RadSafe ] "war stories" re: SEM radiation issues?

Does anyone have or is able to point to ANY radiation incidents involving

Considering the SEMs I've had experience with - I can't imagine such.  I
mean low kV and low beam current less than that of the largest old CRT Black
and White TV set!!  Also in the units I've seen the sample area was in
vacuum contiguous with the x-ray source - thus when access is possible there
is no vacuum and no vacuum - no x-ray - the best interlock possible.

So - has anyone experienced anything different??  There MUST be SOME reason
that they require a State License.


Ted de Castro

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