[ RadSafe ] Re: Leak Test MDA - Amended

[alstonchris at netscape.net]

Kyle

Sorry about the careless error in my first msg.  Please see below.


The figure you cite is the regulatory limit on removable activity, at which 
you must remove the source from service, and repair it or dispose of it. 
Clearly, if your MDA is not at least that low, you cannot demonstrate 
compliance. I would?think that most people would prefer, operationally, to have 
an MDA that is a relatively small fraction of the limit, so that you can act 
before the fact, if a source appears to be failing.  One reference is 10 CFR 35.67 (e).


Cheers
cja


-----Original Message-----
From: Harness, Kyle <kharness at ohmartvega.com>
To: radsafe at radlab.nl
Sent: Thu, Sep 24, 2009 9:06 am
Subject: [ RadSafe ] Leak Test MDA



Could someone please point me towards the reference(s) containing the
basis or calculation for the MDA of 0.005 microcuries in leak testing a
sealed source?  I can't seem to find it anywhere.  Or if you can't
remember the document, an explanation would suffice.  Thanks in advance
for the million responses I am going to get on this!

 

Kyle Harness

Radiation Safety Officer

Ohmart/VEGA Corp.

4241 Allendorf Drive

Cincinnati, Ohio 45209 USA

[tel]  513.272.0524 ext. 211

[cell]  513.432.4504

[fax]  513.272.4390

www <http://www.ohmartvega.com/> .ohmartvega.com

KHarness at ohmartvega.com

 

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