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RE: tritium exit signs - not
The dose information is available from the NRC in:
NUREG-1717
Systematic Radiological Assessment of Exemptions
for Source and Byproduct Materials
Draft Report for Comment
U.S. Nuclear Regulatory Commission
Office of Nuclear Regulatory Commission
Washington, DC 20555-0001
The NRC has this at http://www.nrc.gov/NRC/indexnumold.html
I have a PDF copy, but it is 3 meg and I did not think most people
want me to post that attachment to radsafe.
Paul Lavely <lavelyp@uclink4.berkeley.edu>
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>You wrote,
>
> I would like to see some numbers besides cost for such an incident.
>-------------
>
>Ditto here...
>
>...a colleague told me that " I have one [tritium exit sign] in front of me
>(a prop for presentations). Its label says: "... This device contains
>Hydrogen 3 12.5 Curies. DO NOT DISMANTLE OR OPEN THIS SIGN unless
>specifically licensed by the AEC or an agreement state. DO NOT ABANDON OR
>DISPOSE OF THIS SIGN except by ... Date of Mfg. 12/75" The note is
>printed directly onto the plastic. Of course, if the sign had been glued to
>a wall, and the wall torn down, ...
>My 25.5 yr old sign now has 2.97 Ci. "
>
>....those 12.5 Curies is surprisingly high -- compared to, say, the usual
>0.5 - 1 µCi of Am-241 in smoke detectors (I realise the risks are entirely
>different, but the number itself is nevertheless impressive....).
>
>Jaro
>
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