[ RadSafe ] Disposal via Decay in Storage

John R Johnson idias at interchange.ubc.ca
Wed Nov 9 19:54:40 CST 2005

Cary et al

I don't know the reg's in the US, but in Canada the criteria is based on the
concentration, and Tc-99 would have to be considered.

It's concentration would be a factor of 6.O hrs/0.212000 x10^6 lower.

John R Johnson, Ph.D.
President, IDIAS, Inc
4535 West 9-Th Ave
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(604) 222-9840
idias at interchange.ubc.ca
or most mornings
Consultant in Radiation Protection
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johnsjr at triumf.ca

-----Original Message-----
From: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl]On
Behalf Of Cary Renquist
Sent: November 9, 2005 3:02 PM
Subject: [ RadSafe ] Disposal via Decay in Storage

Quick question:

Is Tc-99m a candidate for disposal via

If so, what would be a acceptable method for
monitoring the decayed material prior to release?

Thanks for any info.

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