[ RadSafe ] Leak Test MDA

Cary Renquist cary.renquist at ezag.com
Thu Sep 24 13:00:11 CDT 2009

Sorry, nothing factual to give you -- just my $0.02 US.
The 0.005 microcurie/0.2 kBq leak test limit seems to be one of those regulatory 
fossils... (I've seen references to it in AEC docs from the 50's; some of the first IAEA technical docs; etc)
It was probably chosen based on practical detection limits back in the 40's/50's.
I don't recall ever coming across any sort of basis document for it -- if there was a technical 
basis document, then the specification would likely be lower for alpha nuclides.


Cary Renquist
Direct:   +1 661-309-1033
cary.renquist at ezag.com

-----Original Message-----
From: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl] On Behalf Of Harness, Kyle
Sent: Thursday, 24 September 2009 06:06
To: radsafe at radlab.nl
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

More information about the RadSafe mailing list