[ RadSafe ] Lost Check Source

Tue Dec 11 14:00:49 CST 2007

If the client has a license, then all radioactive material in his
possession is licensed material.  He can't just say "Oh, it's exempt -
never mind."  Refer to 10 CFR 20.2001.  It's not reportable under 10 CFR
20.2201.  

Glenn Marshall, CHP, RRPT
Radiation Safety Officer
Philotechnics, Ltd
201 Renovare Blvd
Oak Ridge, TN  37830
865-285-3018
Cell: 865-257-2760
Fax: 865-220-0686
www.philotechnics.com
-----Original Message-----
From: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl] On
Behalf Of Geo>K0FF
Sent: Tuesday, December 11, 2007 2:38 PM
To: radsafe at radlab.nl
Subject: Re: [ RadSafe ] Lost Check Source

The exempt quantity of Tc-99 is 10 uCi in USA, NRC 30.71 Schedule B.

Anything less than that is a landfill disposal item.

Being a low energy beta emitter, you would have to be right on top of it
to 
detect it with a sensor. 84.6 keV average beta would have a range in air
of 
1 foot.

George Dowell
NLNL
New London Nucleonics Lab

----- Original Message ----- 
From: <Cehn at aol.com>
To: <radsafe at radlab.nl>
Sent: Tuesday, December 11, 2007 1:09 PM
Subject: [ RadSafe ] Lost Check Source

>A client of mine has mis-placed a 27 pCi Tc-99 check source.  The
search 
>is
> on for it. Does anyone have experience (post 9/11) with the
regulators on
> this situation?
>
> Joel I. Cehn, CHP
> _joelc at alum.wpi.edu_ (mailto:joelc at alum.wpi.edu)
>
>
>
>
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