RE: scale source

["Cook, Lew (LCOO)" <LCOO@chevron.com>]

Po-210 half life is 138 days, so about 50 half lives have passed. It must be
a Pb-210 source if it is of the radium decay chain and still has activity.

Are sources labeled Po-210 REALLY Pb-210?
Lew
510 242-7040





> -----Original Message-----
> From:	jgreco@kodak.com [SMTP:jgreco@kodak.com]
> Sent:	Thursday, November 04, 1999 6:35 AM
> To:	Multiple recipients of list
> Subject:	Re: scale source
> 
> 
> 
> 
> 
> Most likely the source is an anti-static device containing Polonium-210,
> and normally those used in scales are less than 500 microcuries.
> 
> J. M. Greco, RSO
> jgreco@kodak.com
> 
> 
> 
> 
> 
> Lori Powell <LPOWELL@ARS.USDA.GOV> on 11/04/99 09:23:23 AM
> 
> Please respond to radsafe@romulus.ehs.uiuc.edu
> 
> To:   Multiple recipients of list <radsafe@romulus.ehs.uiuc.edu>
> cc:    (bcc: Joseph M. Greco/497509/EKC)
> Subject:  scale source
> 
> 
> 
> 
> One of our researchers has discovered an old scale in their lab (20
> years) that was manufactured by Fisher that appears to contain some
> type of radioactive source.  They are getting readings on their GM
> survey meter.
> 
> Does anyone have any idea what this source might be?
> 
> Lori Powell
> USDA/RSS
> 5601 Sunnyside Ave
> Beltsville, MD  20705-5510
> ************************************************************************
> The RADSAFE Frequently Asked Questions list, archives and subscription
> information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html
> 
> 
> 
> 
> 
> 
> 
> ************************************************************************
> The RADSAFE Frequently Asked Questions list, archives and subscription
> information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html
************************************************************************
The RADSAFE Frequently Asked Questions list, archives and subscription
information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html