Re: [ RadSafe ] âDirty Bombâ Mat erial in Use Across Canada
Michael LaFontaine, P.Phys.
LCS at golden.net
Tue Mar 4 21:15:09 CST 2008
Not just Canada - any country with a nuclear
medicine facility in its hospitals,
radiochemistry/nuclear engineering faculty in its
universities, Am-241 smoke detectors, Co-60
irradiators, Cf-252 calibrators, Sr-90 batteries,
nuclear gauges, industries that use Ir-192 or
Co-60 cameras, etc., etc., has all the
prerequisites for "dirty bomb" material. For
those of us working in the industry, the onus is
on us to ensure adequate safeguards and
compliance/reporting to regulators - all the
sources I've come across in Canada and the US in
my 30 years in the field, have been "very"
secure. I'm sure the same holds true for our
European colleagues. Not being naive, but these
sources are not generally left unattended.
Michael LaFontaine, P.Phys., RSO
Manager - R&D
465 Dobbie Drive
At 06:31 PM 3/4/2008, John R Johnson wrote:
>There is also a lot of "Dirty Bomb" material in
>the Canadian "Oil Patch" and in Texas, etc. Look
>for a "soon to be published" HPS ANSI report.
>John R Johnson, PhD
>CEO, IDIAS, Inc.
>4535 West 9th Ave
>Vancouver, B. C.
>V6R 2E2, Canada
>idias at interchange.ubc.ca
>----- Original Message ----- From: "Clayton J
>Bradt" <cjb01 at health.state.ny.us>
>To: <radsafe at radlab.nl>
>Sent: Tuesday, March 04, 2008 1:51 PM
>Subject: [ RadSafe ] âDirty Bombâ Material in Use Across Canada
>>âDirty Bombâ Material in Use Across Canada
>>Irradiation devices containing what a U.S. study called a potential
>>radiological âdirty bombâ ingredient remain in use in nearly 100 Canadian
>>hospitals, universities and blood banks, the Canwest News Service reported
>>Friday (see GSN, Feb. 21).
>>The machines contain cesium chloride, a âhighly dispersibleâ form of
>>radioactive cesium 137, according to a February report by the U.S. National
>>Research Council. The National Academy of Sciences body has called for the
>>devices to âbe replaced in the United States and, to the extent possible,
>>Uses for the devices include irradiating blood prior to transfusion. Canada
>>currently has 94 of the devices in use, the Canadian Nuclear Safety
>>Commission told Canwest. The board said it
>>monitors the âsealed sourcesâ of
>>cesium chloride in the machines on a âcradle-to-graveâ basis, tracking
>>âwhere they are located and when they are transferred between locations.â
>>Natural Resources Canada said it plans this week to respond to the U.S.
>>reportâs call to replace the machines.
>>MDS Nordion, a top Canadian nuclear medicine firm, has sold about 400
>>cesium chloride irradiators in the United States, the U.S. study says. The
>>company said it has sold 65 of the machines in Canada (Randy Boswell,
>>Canwest News Service, Feb. 29).
>>Wisely, Nordion also markets X-ray based blood irradiators.
>>Clayton J. Bradt
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