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Re: Radium Painted Dials
While you might have a book value, I have read up to 25 mR/hr from a couple of watches (and one of them was worn crown down by the male owner!), and one clock that could be detected at the door of the room it was in. There is much more variation in the field than given in the book. I think the variation is due to the source of the paint used, and maybe even the place of manufacture. I am sorry I do not have further details as this was some time ago.
Michael Kay, ScD, CHMM
makay@teleport.com
Charles Willis wrote:
> Boyd:
>
> Eisenbud & Gesell offer a range of 0.01 to 0.36 microcuries per watch and 0.5 microcuries per clock. Great variation is likely.
>
> Charlie Willis
> caw@nrc.gov
>
> >>> Boyd Imai <IMAIBM@nv.doe.gov> 01/21 4:19 PM >>>
> Any suggestions on quantifying the radium activity found on the faces of
> gauges and dials from older instrument panels? Also, any references
> regarding the composition of radium containing paints?
>
> Send to:
> imaibm@nv.doe.gov
>
> Thanks.
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information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html