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AW: AW: Missing Exit Signs







-----Ursprüngliche Nachricht-----

Von: Dukelow, James S Jr [mailto:jim.dukelow@pnl.gov]

Gesendet: Dienstag, 16. März 2004 15:38

An: Franz Schoenhofer; John Jacobus; Bernard L. Cohen; Carol Marcus

Cc: jjcohen; Williamson, Matthew/Medical Physics; Radsafe

Betreff: RE: AW: Missing Exit Signs











=================



An insteresting timeline for radiation science and history, including

radiation accidents can be found at:



www.roadtechs.com/rpchron.htm



It includes:



1961 Switzerland a tritium exposure of three individuals up to 300 rem leads

to one fatality.



1964 Federal Republic of Germany, overexposure of four to tritium, doses up

to 1000 rad, 1 death



I was aware that there had been one occupational death, but not of a second.



Because the biological half life of tritium is only about 10 days, it is

very difficult to get a significant dose from an acute exposure.  On the

other hand, a small fraction of inhaled/ingested tritium will become bound

in body hydrocarbons and have a much longer biological half life.

Therefore, chronic occupational exposure can lead to a situation in which a

significant fraction of the body's hydrogen in hydrocarbons has been

replaced by tritium.



Like Franz, I too have a paper, citing at least one of the above

occupational fatalities, lost in my archives.



Best regards.



Jim Dukelow

Pacific Northwest National Laboratory

Richland, WA

jim.dukelow@pnl.gov



--------------------------------------------



Jim,



I would have been surprised if nobody at RADSAFE would have known more than

I know on tritium fatalities! Thank you for your informations and hope you

share with us the paper if you find it.



Best regards,



Franz







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