[ RadSafe ] [Non-DoD Source] Re: Meaning of Rem? (UNCLASSIFIED)

[John R Johnson]

Gerald

Thanks for this background.

John
 
> On Nov 13, 2017, at 8:33 AM, Falo, Gerald A CIV USARMY MEDCOM APHC (US) <gerald.a.falo.civ at mail.mil> wrote:
> 
> Classification: UNCLASSIFIED
> Caveats: NONE
> 
> Oak Ridge Associated University has a nice page discussing the origin of "selected radiological and nuclear terms" "Rem" can be found here - https://www.orau.org/ptp/articlesstories/names.htm#rem.
> 
> Scrolling leads to other interesting origin stories.
> 
> Enjoy,
> Jerry
> ________________________________
> 
> Gerald A. Falo, Ph.D., CHP
> U.S. Army Public Health Center - Health Physics Division
> gerald.a.falo.civ at mail.mil
> gerald.a.falo.civ at mail.smil.mil
> 410-436-4852
> DSN: 584-4852
> 
> 
> 
> 
> -----Original Message-----
> From: RadSafe [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Delvan Neville
> Sent: Friday, November 10, 2017 6:09 PM
> To: The International Radiation Protection (Health Physics) Mailing List
> Cc: Radsafe (radsafe at agni.phys.iit.edu)
> Subject: [Non-DoD Source] Re: [ RadSafe ] Meaning of Rem?
> 
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> 
> ----
> 
> That's a holdover from the age of the terminology.  Originally one rem was defined as "a relevant biological effect equal to that produced by one roentgen" for x-rays, and there was the 'rep' (roentgen equivalent
> physical) for radiations other than photons that then combined with an RBE to get rem. In the mid-50s ICRP suggested the use of the rad instead of the rep, and the definition of the rem changed to being the product of rad * RBE instead of the old definition that tied it directly to one roentgen.
> 
> Delvan Neville
> Corvallis, OR
> 
> On Fri, Nov 10, 2017 at 11:07 AM Strickert, Rick (Consultant) < rstrickert at signaturescience.com> wrote:
> 
>> Why does "rem" stand for "roentgen equivalent man"?   The roentgen is an
>> unit of gamma exposure in air.   Wouldn't the rem better stand for "rad
>> equivalent man" given the rem included the Biological Quality Factor?
>> 
>> Rick Strickert
>> Austin, TX
>> 
>> 
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