[ RadSafe ] What's a sievert?

Wed Mar 16 20:45:19 CDT 2011

Woops!

Dear Group:

Putting dose into perspective, my cardiologist gave me a stress test last
year using a cocktail of radionuclides.  My total dose from the test was
about 2.5 REM, or 25 mSv or 0.025 Sv.

The average background radiation in Saint Nom la Breteche, France where I
lived was 9 uR/Hr.  Here in Los Alamos, the background is about 15 uR/Hr or
0.15 uSv/Hr.  That is about 131 mR / Year or 1.35 uSv / Year.

Dan ii

Dan ii

--
Dan W McCarn, Geologist
108 Sherwood Blvd
Los Alamos, NM 87544-3425
+1-505-672-2014 (Home - New Mexico)
+1-505-670-8123 (Mobile - New Mexico)
HotGreenChile at gmail.com (Private email) HotGreenChile at gmail dot com

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu
[mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Richard Smart
Sent: Wednesday, March 16, 2011 19:12
To: The International Radiation Protection (Health Physics) MailingList
Subject: Re: [ RadSafe ] What's a sievert?

-

Hi Dan,

I think you are out by a factor of 10.  A myocardial perfusion scan could be

about 25 mSv (effective dose), but definitely not 250 mSv.

Richard Smart PhD
Chief Physicist & Radiation Safety Officer
Conjoint A/Prof University of NSW
Prof Fellow University of Wollongong
Department of Nuclear Medicine
St George Hospital
Gray Street
Kogarah, NSW 2217
Australia
Tel: +61-2-91133129
Fax: + 61-2-91133991
email: r.smart at unsw.edu.au

----- Original Message ----- 
From: "Dan W McCarn" <hotgreenchile at gmail.com>
To: "'The International Radiation Protection (Health Physics) MailingList'" 
<radsafe at health.phys.iit.edu>
Sent: Thursday, March 17, 2011 11:47 AM
Subject: Re: [ RadSafe ] What's a sievert?

Dear Group:

Putting dose into perspective, my cardiologist gave me a stress test last
year using a cocktail of radionuclides.  My total dose from the test was
about 2.5 REM, or 250 mSv or 0.25 Sv.

The average background radiation in Saint Nom la Breteche, France where I
lived was 9 uR/Hr.  Here in Los Alamos, the background is about 15 uR/Hr or
0.15 uSv/Hr.  That is about 131 mR / Year or 1.35 uSv / Year.

Dan ii

--
Dan W McCarn, Geologist
108 Sherwood Blvd
Los Alamos, NM 87544-3425
+1-505-672-2014 (Home - New Mexico)
+1-505-670-8123 (Mobile - New Mexico)
HotGreenChile at gmail.com (Private email) HotGreenChile at gmail dot com

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu
[mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Marvin Resnikoff
Sent: Wednesday, March 16, 2011 14:38
To: The International Radiation Protection (Health Physics) Mailing List
Subject: Re: [ RadSafe ] What's a sievert?

That dose, 10 chest x-rays, would be more like the acceptable yearly dose to
the public, not workers.
M Resnikoff

--- On Wed, 3/16/11, sarah.stewart at boehringer-ingelheim.com
<sarah.stewart at boehringer-ingelheim.com> wrote:

From: sarah.stewart at boehringer-ingelheim.com
<sarah.stewart at boehringer-ingelheim.com>
Subject: Re: [ RadSafe ] What's a sievert?
To: radsafe at health.phys.iit.edu
Date: Wednesday, March 16, 2011, 4:27 PM

The best explanation I have heard thus far from the media was from a radio
broadcast. The expert (who I believe was a contributing editor to
Scientific
American) compared the acceptable dose rate for Japanese radiation workers
to
about 10 chest X-rays.

Sincerely,
Sarah Stewart
Environmental Health & Safety
Boehringer-Ingelheim Pharmaceuticals, Inc.
Ridgefield, CT 06877
(203) 791-6493

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu
[mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Cmtimmpe at aol.com
Sent: Wednesday, March 16, 2011 2:06 PM
To: radsafe at health.phys.iit.edu
Subject: [ RadSafe ] What's a sievert?

With respect to Message 1 of March 16, the majority of the public has no
idea what a 'sievert' is much less confusing micro and milli. Few of the
news items I have seen put the dosage information in context to 'normal
background' or 'action levels' or health affecting levels along with the
accompanying exposure times. No wonder there is so much fear - the
explanations
should be in simpler, layman language. As for the discussion mentioned by
Roger, where was that discussion?

Christopher M. Timm, PE
Vice President/Senior Project Manager
PECOS Management Services, Inc.
505-323-8355 - phone
505-323-2028 - fax
505-238-8174 - mobile

Message: 1
Date: Wed, 16 Mar 2011 09:04:22 -0400
From: <edmond0033 at comcast.net>
Subject: Re: [ RadSafe ] NHK Live
To: "'The International Radiation Protection \(Health Physics\)
Mailing List'" <radsafe at health.phys.iit.edu>,
<GeigerCounterEnthusiasts at yahoogroups.com>
Message-ID: <DC73985AD8FB45288D6EB4516FF91A14 at EdmondPC>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original

Unfortunately the Public and news people mistake milli and micro for
thousand and million respectively.

Ed Baratta

-----Original Message----- 
From: Roger Helbig
Sent: Wednesday, March 16, 2011 7:41 AM
To: 'The International Radiation Protection (Health Physics) Mailing List'
;
GeigerCounterEnthusiasts at yahoogroups.com
Subject: [ RadSafe ] NHK Live

There was good explanation just on about difference between milli and
microSieverts and showing comparable doses in addition to the radiation
measurements at various distances from Fukushima

Roger

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