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Re: Safety of Am-241 Smoke Detectors




Michael:

For your information the new "lantern mantles" are not "radioactive" anymore
, and it does not last as long as the old ones, of course.

At 04:12 PM 9/3/96 -0500, you wrote:
>At 14:53 03.09.1996 -0500, you wrote:
>>
>>
>>     In a effort to educate the public (especially students) about radiation
>>     science it is useful to point out common, non-threatening consumer
>>     products like lantern mantles and smoke detectors.
>>
>>     Can anyone provide references of safety evaluations of these products?
>>
>>     Specifically, this information is needed for obtaining an exemption or
>>     possibly a license for the use of Am-241 smoke detector sources in the
>>     class room.
>>
>>     Thanks for your help...mjr
>>
>>
>>==============================================================================
>>     _/_/      _/_/       _/     _/    _/_/    _/_/    Michael J. Russell, CHP
>>   _/   _/   _/   _/     _/     _/  _/    _/ _/   _/   SONGS, D3D
>>    _/     _/      _/   _/_/   _/  _/         _/       PO Box 128
>>     _/   _/       _/  _/ _/  _/  _/           _/      San Clemente, CA 92672
>>      _/  _/      _/  _/  _/ _/  _/  _/_/        _/    (714) 368-9127
>>_/    _/  _/     _/  _/   _/_/  _/      _/  _/   _/    fax (714) 368-7575
>> _/_/       _/_/    _/     _/    _/_/_/      _/_/      russelmj@songs.sce.com
>>==============================================================================
>>
>>
>>Michael,
>
>There have been discussions about radioactive material in consumer products
>on radsafe some time ago. I remember that it was mentioned that for lantern
>mantels nowadays also nonradioactive material (yttriumoxide) is used instead
>of thoriumoxide.
>
>For the question of americium smoke detectors I would believe that there are
>clear regulations in the USA.
>
>Franz
>Schoenhofer
>Habichergasse 31/7
>A-1160 WIEN
>AUSTRIA/EUROPE
>Tel./Fax:	+43-1-4955308
>Tel.:		+43-664-3380333
>e-mail:		schoenho@via.at
>
>
Mr. Rahim Ghanooni
Sr. Health Physicist
Certified Hazardous Material Manager (CHMM)
319-851-7133
rahim@inav.net

My opinion only.