[ RadSafe ] Health Canada's Radiation Monitoring Data
nmbarss at fred.net
nmbarss at fred.net
Tue Jul 5 12:42:19 CDT 2011
Hi Cat...thanx for the info also.... BODY { font-family:Arial,
Helvetica, sans-serif;font-size:12px; }
On Wed 06/29/11 5:20 PM , Catalina Kovats kovatsc at georgetown.edu
sent:
Matt:
The Rad-Net data was posted on EPA website at
http://www.epa.gov/japan2011/data-updates.html [1]
Catalina
--
Catalina E. Kovats, M.S.
Radiation Safety Officer
Georgetown University EH&S
LM-12 Preclinical Science Building
3900 Reservoir Road, N.W.
Washington, DC 20057-1431
Phone (202) 687-4712
Fax (202) 687-5046
On 6/29/2011 2:37 PM, Matt sargent wrote:
> FYI
>
> The link to Health Canada's Radiation Monitoring Data
>
> This is the link the CNSC supplied to monitor Radiation in Canada
and its
> territories.
>
> That was mentioned in the original email below.
>
>
http://www.hc-sc.gc.ca/hc-ps/ed-ud/respond/nuclea/data-donnees-eng.php#ddrl
[2]_
> mar2011
>
>
> I have tried to ask for the NRC comparison but have been given no
address
> for any such location or information.
>
>
> Matt Sargent
>
> -----Original Message-----
> From: Conklin, Al (DOH) [Al.Conklin at DOH.WA.GOV [3]]
> Sent: June 29, 2011 11:59 AM
> To: The International Radiation Protection (Health Physics)
MailingList
> Subject: Re: [ RadSafe ] Fukushima Hot Particles
>
> A very nice concise summary. Thanks.
>
> Al Conklin
> Lead Trainer and Health Physicist
> Radiological Emergency Preparedness Section
> Office of Radiation Protection
> Department of Health
> office: 360-236-3261
> cell: 360-239-1237
>
> -----Original Message-----
> From: radsafe-bounces at health.phys.iit.edu [4]
> [radsafe-bounces at health.phys.iit.edu [5]] On Behalf Of Matt sargent
> Sent: Wednesday, June 29, 2011 9:24 AM
> To: 'The International Radiation Protection (Health Physics)
Mailing List'
> Subject: Re: [ RadSafe ] Fukushima Hot Particles
>
> Thought I Would share this email I have received regarding
questions to my
> regulatory authority, regarding the hot particles.
>
> Thanks
>
>
> Kindly,
> Matt Sargent
> Safety / Compliance Officer
> matt at buffaloinspection.com [6]
> Office # 780-486-7344
> Fax # 780-486-4685
> www.buffaloinspection.com [7]
>
>
>
>
----------------------------------------------------------------------------
> -
>
> Matt: here's from one of our specialists.
>
> Good Afternoon,
>
> You had raised some questions about hot particles and their
association with
> the Fukushima events. NCRP Report No. 130- Biological Effects and
Exposure
> Limits for Hot Particles- is a good source of reference information
about
> hot particles, including their detection.
>
> Hot particles have typically been associated with nuclear reactors
and
> weapons testing and are usually beta emitting or gamma/beta
emitting
> radionuclides, commonly Co-60 and other fission fragments. NCRP
report No.
> 130 defines hot particles as being greater than 10 microns and less
than
> 3000 microns. Hot particles are loosely defined as "high activity"
> particles. They are often electrically charged and are water
insoluble. Hot
> particles are typically found on the skin, and therefore much
attention has
> been given to the effects on the skin and on the skin dosimetry
related to
> hot particles.
>
> Hot particles have been observed in association with the Chernobyl
> accident. The associated long distance transit with the large fire
and
> explosions essentially caused a ballistic launch through the upper
> troposphere; not the usual mechanism of long range transit.
>
> Fukushima's primary containment was largely left intact; the
releases were
> very different than with Chernobyl as they were mainly volatile in
nature.
>
> It is unlikely that hot particles will be observed as a result of
Fukushima
> especially in North America. However, in the coming months and
years ahead,
> much work will be done in relation to Fukushima at which time more
> information will be available.
>
> Health Canada's network has observed volatile materials like
Cesium, iodine
> etc. at stations outside of Japan and nothing that has looked like
a piece
> of refractory material. In a few months, Health Canada may do some
> autoradiograghy on some Canadian filters to look at activity
distribution of
> longer lived materials.
>
> The reports which were linked in your e-mail (Fairwinds) make
several claims
> of hot particles being breathed in every day and makes specific
claims of 5
> hot particles/day being "breathed in" in Seattle. We have not found
any
> credible information which supports this claim.
>
> It is notable that in NCRP Report No. 130 it is stated that there
have been
> no reported clinically observable human injuries due to hot
particle
> exposures in the workplace.
>
> I Hope this helps.
>
> Melanie
>
>
> Regards,
> Melanie Rickard
> CNSC-CCSN
> External Dosimetry Specialist
> 613-996-7323
>
>
>
> ________________________________________
> From: Matt Sargent [Matt at buffaloinspection.com [8]]
> Sent: Wednesday, June 22, 2011 12:54 PM
> To: Drolet, Marc
> Subject: Thanks
> Marc
>
> Thanks for the link, I appreciate the fast response. So is there an
> accurate way to count the hot particles? For example you have Arnie
> Gundersen and others talking about the amount of particles being
inhaled in
> Japan Fukushima around 11 a day and Seattle around 5 a day. Is this
> accurate? Even though very little radiation is being detected what
is the
> possibility that it is being created by hot particles? It's a very
> different situation if you are breathing the particles in rather
than just
> absorbing the radiation/energy through the skin. As I am sure you
are
> aware. I am just trying to understand the situation there is some
many
> different explanations and opinions on it.
>
> Dose the Nuclear Regulatory Commission of the USA have a similar
setup for
> monitoring radiation readings? I understand that the jet stream has
> sheltered us for the most part while the majority has gone down to
our
> southern neighbors. I have talked to associates that claim at times
> upward of 30 x normal background. Is there any where that you know
of to
> monitor the readings in the USA?
>
> Thanks for your time.
>
> Matt Sargent
>
> Kindly,
> Matt Sargent
> Safety Compliance Officer
> matt at buffaloinspection.com [9]
> Office # 780-486-7344
> Fax # 780-486-4685
> www.buffaloinspection.com [10]
>
>
>
> *** NOTE ***
> The CNSC email security server scanned this email and found no
potentially
> hostile
> or malicious content. To be safe, do not open attachments from
unrecognized
> senders.
>
> *** REMARQUE ****
> ordinateur,
>
>
>
****************************************************************************
> ***********************
> The information contained in this e-mail is intended solely for the
use of
> the named
> addressee. Access, copying, or re-use of the e-mail or any
information
> contained
> therein by any other person is not authorized. If you are not the
intended
> recipient,
> please notify us immediately by returning the e-mail to the
originator.
>
> partielle de
> message
> retournant ce
>
****************************************************************************
> ***********************
>
> -----Original Message-----
> From: Peter Bossew [Peter.Bossew at reflex.at [11]]
> Sent: June 28, 2011 2:06 PM
> To: radsafe at health.phys.iit.edu [12]
> Subject: [ RadSafe ] Fukushima Hot Particles
>
> Colleagues:
>
> Only now I noticed the 'hot particles' thread. I apologize if I
missed
> something, and if I am repeating arguments.
>
> The only evidence for hot particles is
>
> (1) an autoradiography of an airfilter;
> (2) an electron microscope picture of an isolated particle.
> (3) XRF scan of the particle.
> (4) gamma and alpha spcs of the bare HP. Also easily done (I did it
with
> Chernobyl HPs.) The r.n. composition is very different from the
continuous
> phase on the filter.
>
> This is all done quite easily by standard techniques.
>
> Does anybody know about such findings? Please let me know any
reference.
> (I haven't seen any.)
>
> A gamma spectrum of an air filter is no evidence. A NaI spectrum is
just
> ridiculous for this purpose.
> The argument that Rn progenies attached to aerosols can appear as
HPs is
> wrong. After a few hours 214Pb,Bi have decayed. 210Pb,Po are
usually not
> present in enough activity, same for Tn. Btw. it can easily be
checked by
> investigating BG filters, and if such suspected particle is found,
perform
> g& a-spc on the isolated particle. Rn and Tn progenies are very
easy to
> identify (should be a triviality in this forum.)
>
>
> Generally speaking, the release conditions were such that there is
a
> chance of HPs. Therefore experimental evidence would be valuable
> contribution to understanding the accident.
>
>
> Thx.
>
> Peter Bossew
>
>
> (German Federal Radioprotection Authority, Berlin)
>
>
> _______________________________________________
> You are currently subscribed to the RadSafe mailing list
>
> Before posting a message to RadSafe be sure to have read and
understood the
> RadSafe rules. These can be found at:
> http://health.phys.iit.edu/radsaferules.html [13]
>
> For information on how to subscribe or unsubscribe and other
settings visit:
> http://health.phys.iit.edu [14]
>
> _______________________________________________
> You are currently subscribed to the RadSafe mailing list
>
> Before posting a message to RadSafe be sure to have read and
understood the
> RadSafe rules. These can be found at:
> http://health.phys.iit.edu/radsaferules.html [15]
>
> For information on how to subscribe or unsubscribe and other
settings visit:
> http://health.phys.iit.edu [16]
> _______________________________________________
> You are currently subscribed to the RadSafe mailing list
>
> Before posting a message to RadSafe be sure to have read and
understood the
> RadSafe rules. These can be found at:
> http://health.phys.iit.edu/radsaferules.html [17]
>
> For information on how to subscribe or unsubscribe and other
settings visit:
> http://health.phys.iit.edu [18]
>
> _______________________________________________
> You are currently subscribed to the RadSafe mailing list
>
> Before posting a message to RadSafe be sure to have read and
understood the RadSafe rules. These can be found at:
http://health.phys.iit.edu/radsaferules.html [19]
>
> For information on how to subscribe or unsubscribe and other
settings visit: http://health.phys.iit.edu [20]
>
_______________________________________________
You are currently subscribed to the RadSafe mailing list
Before posting a message to RadSafe be sure to have read and
understood the RadSafe rules. These can be found at:
http://health.phys.iit.edu/radsaferules.html [21]
For information on how to subscribe or unsubscribe and other settings
visit: http://health.phys.iit.edu [22]
Links:
------
[1] http://www.epa.gov/japan2011/data-updates.html
[2]
https://webmail.xecu.net/parse.php?redirect=http%3A%2F%2Fwww.hc-sc.gc.ca%2Fhc-ps%2Fed-ud%2Frespond%2Fnuclea%2Fdata-donnees-eng.php%23ddrl
[3] mailto:Al.Conklin at DOH.WA.GOV
[4] mailto:radsafe-bounces at health.phys.iit.edu
[5] mailto:radsafe-bounces at health.phys.iit.edu
[6] mailto:matt at buffaloinspection.com
[7]
https://webmail.xecu.net/parse.php?redirect=http://www.buffaloinspection.com
[8] mailto:Matt at buffaloinspection.com
[9] mailto:matt at buffaloinspection.com
[10]
https://webmail.xecu.net/parse.php?redirect=http://www.buffaloinspection.com
[11] mailto:Peter.Bossew at reflex.at
[12] mailto:radsafe at health.phys.iit.edu
[13]
https://webmail.xecu.net/parse.php?redirect=http%3A%2F%2Fhealth.phys.iit.edu%2Fradsaferules.html
[14]
https://webmail.xecu.net/parse.php?redirect=http%3A%2F%2Fhealth.phys.iit.edu
[15]
https://webmail.xecu.net/parse.php?redirect=http%3A%2F%2Fhealth.phys.iit.edu%2Fradsaferules.html
[16]
https://webmail.xecu.net/parse.php?redirect=http%3A%2F%2Fhealth.phys.iit.edu
[17]
https://webmail.xecu.net/parse.php?redirect=http%3A%2F%2Fhealth.phys.iit.edu%2Fradsaferules.html
[18]
https://webmail.xecu.net/parse.php?redirect=http%3A%2F%2Fhealth.phys.iit.edu
[19]
https://webmail.xecu.net/parse.php?redirect=http%3A%2F%2Fhealth.phys.iit.edu%2Fradsaferules.html
[20]
https://webmail.xecu.net/parse.php?redirect=http%3A%2F%2Fhealth.phys.iit.edu
[21] http://health.phys.iit.edu/radsaferules.html
[22] http://health.phys.iit.edu
More information about the RadSafe
mailing list