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Re: Rad Sources for Workshops
Not only Ra-226 (activity up 550 kBq per product) also Kr-85 (activity 250
KBq per product).
Besides the IAEA Safety Series 89, mentioned in the previous message, I
would also suggest the following document:
Recommendation for ionization chamber smoke detector in implementation of
radiation protection standards, OECD/NEA 1977, containing all technical
information, basis for justification.
Jose Julio Rozental
joseroze@netvision.net.il
Israel
----- Original Message -----
From: William V Lipton <liptonw@DTEENERGY.COM>
To: Dimiter Popoff <tgi@cit.bg>
Cc: <radsafe@list.vanderbilt.edu>
Sent: Thursday, June 20, 2002 9:13 PM
Subject: Re: Rad Sources for Workshops
Are you sure this is a Am-241 smoke detector? Some of the early smoke
detectors
used Ra-226.
The opinions expressed are strictly mine.
It's not about dose, it's about trust.
Curies forever.
Bill Lipton
liptonw@dteenergy.com
Dimiter Popoff wrote:
> I have seen one smoke-detector 241Am source which is somewhow built
> at the bottom of something like a brass well (so the source would
> be directed).
> The whole thing had 10-12 mm outside diameter, and ended with a screw
> at the rear (if the opening for the source is the front) side.
> I suppose one could swallow it - but then I imagine anyone wanting
> to swallow such a piece of metal would have much bigger, non-radiation
> related problems...
> However, the source seemed not so weak; it was doing a 40 or 50 kCps
> gamma through the Be window of a 15% HPGe detector... Being non-medical,
> I can only stay astonished that such a source would bring no
> health issues if ingested. Are the others talking of a weaker
> source or are we really designed to withstand that much? Or even
> much more than that?
>
> Dimiter
>
> --------------------------------------------------------------------
> Dimiter Popoff
> Transgalactic Instruments http://transgalactic.freeyellow.com
>
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