[ RadSafe ] [Radsafe] small question on steel contamination

[Harry Reynolds]

Ludlum has a Model 193-6 which is a 1"x6" round plastic scintillation
detector mounted on a handle  much like a metal detector.  It will
self-set an alarm at 2 sigma above ambient background.  It was primarily
intended for screening scrap metals.  We use them for quick coverage of
empty containers.

Harry Reynolds
ASRSO
ENERGYSOLUTIONS
801-649-2219 Desk
801-349-9036 Cell 

-----Original Message-----
From: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl] On
Behalf Of gert.jonkers at shell.com
Sent: Wednesday, May 20, 2009 9:32 AM
To: radsafe at radlab.nl
Subject: FW: [ RadSafe ] [Radsafe] small question on steel contamination

Nick,

Indeed it should be able to detect (assumed) Co-60 much simpler.
Exploiting handheld scintillation type of monitors should do the job. In
my opinion the GammaRAE II or RadEye PRD would be good enough. I think
the RedAlert being of the GM-type is a slow and less sensitive responser
in this respect. Does Ludlum have this type of small handheld
scintillation type of monitors available?

Is the Co-60 stainless steel issue also hitting Australia?

Kind regards,
Gert Jonkers

-----Original Message-----
From: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl]On
Behalf Of Nick Tsurikov
Sent: 14 May 2009 12:10
To: radsafe at radlab.nl
Subject: [ RadSafe ] [Radsafe] small question on steel contamination


Greetings from Australia!
I wonder if someone could let me know, nothing to do with my work, I'm
just
curious...
We do remember steel contaminated by cobalt-60 (lift buttons, etc).  I
had a
look and all suggestions for steel screening include very complicated
and
expensive systems, with 'exploranium identifier' being probably the
cheapest...
I do understand that to 'get the picture' with which radioisotope the
steel
is contaminated one needs sophisticated equipment.  But...  would we be
able
to detect the 'general' increase in gamma radiation with something much
more
simple (like RadAlert or a simple Ludlum) and, if the difference is
detected
- continue with more complex equipment?
Kind regards
Nick Tsurikov
Eneabba, Western Australia
http://calytrix.biz/
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