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Re: Kr-85

Please note:

85m Kr has a half life orf 4.48 h;   85 Kr has a half-life of 10.73 years.

SAM
========


>Message authorized by:
>    : umtrahp@concentric.net_at_INTERNET at X400PO
>     Kr-85 only has a half-life of about 4.5 hours - unless they're using
>     nuclear methods to generate the Kr, there shouldn't be a rad problem.
>
>     Pete Darnell
>     peter.darnell%em@em.doe.gov
>
>
>______________________________ Reply Separator
>_________________________________
>Subject: Kr-85
>Author:  radsafe@romulus.ehs.uiuc.edu_at_INTERNET at X400PO
>Date:    12/4/96 10:42 AM
>
>
>Errors-To: melissa@romulus.ehs.uiuc.edu
>Originator: radsafe@romulus.ehs.uiuc.edu
>Precedence: bulk
>X-Listserver-Version: 6.0 -- UNIX ListServer by Anastasios Kotsikonas
>X-Comment:  Radiation Safety Distribution List
>
>Radsafers:
>Reading a report from a company that produces specialty gases (e.g., Kr from
>
>the atmosphere via a cryogenic method), they are convinced that they have a
>rad problem with Kr-85.  I do not know the basis for their concern. Has
>anyone ever heard of a similar situation.
>I would appreciate any information you have.
>                Joe Bianconi
>         Rust Federal Services, Inc.
>Uranium Mill Tailings Remedial Action Project
>     2309 Renard Place SE, Suite 300
>          Albuquerque, NM 87106
> 505/246-2537 voice        505/766-1813 fax


Dr. K. K. S. Pillay
Nuclear Materials Technology Division
Los Alamos National Laboratory
Los Alamos, NM 87545 (USA)
Tel: (505)667-2556
Fax: (505)667-7966
e-mail: s_pillay@lanl.gov