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RE: Missing Exit Signs



10 cool points to Harry for having the most Greek sounding last name I have ever heard. I have a great admiration for their culture and envy all who occupy the Greek Isles. Oh yah....thanx for the concurrance. If only the media could be made to understand the harm they sometimes do.....but then again, that would be assuming it would bother them in the first place.



Floyd W. Flanigan B.S.Nuc.H.P.



-----Original Message-----

From: owner-radsafe@list.vanderbilt.edu

[mailto:owner-radsafe@list.vanderbilt.edu]On Behalf Of Anagnostopoulos,

Harry W.

Sent: Thursday, March 11, 2004 9:24 AM

To: 'John Jacobus'; Jaro; Radsafe

Subject: RE: Missing Exit Signs





True, but terrorist bombings are often followed by phone calls to the media

claiming responsibility.



I imagine that the message might include the idea that a deadly radioactive

element was in the bomb, and that the responders cannot detect it! I'd guess

that the media would run with it w/o checking the facts, leading to the fear

and panic.



My ramblings only.



-----------------------------------------------------------

Harry Anagnostopoulos, CHP

Senior Health Physicist

SAIC

500 NW Plaza, Suite 1000

St. Ann, MO  63074

(314) 770-3059 Phone

(314) 770-3067 Fax





-----Original Message-----

From: owner-radsafe@list.Vanderbilt.Edu

[mailto:owner-radsafe@list.Vanderbilt.Edu]On Behalf Of John Jacobus

Sent: Thursday, March 11, 2004 7:14 AM

To: Jaro; Radsafe

Subject: RE: Missing Exit Signs





I would think that the purpose of a radiological

dispersion device is to creat fear an panic.  If the

first responsers could not detect the radionuclide,

i.e., tritium in any form, because they were using GM

or exposure rate meters, the terrorist would have lost

the edge in creating panic.



--- Jaro <jaro-10kbq@sympatico.ca> wrote:

> Franz wrote:

> I would say, that trying to use tritium exit signs

> as an RDD, is ridiculous.

> If they were of the type I know - filled with

> gaseous HT - sure no cleanup

> would be necessary and would not cost a single cent,

> because within a few

> minutes all of this gas would have been dispersed

> and diluted to ambient

> levels. There would be no mess <SNIP>

> 

> I wonder about that -- presumably an RDD involves

> some sort of explosion.

> Wouldn't that cause at least some part of the HT to

> burn and form HTO ?

> While most of that would also disperse as vapour,

> some might also cause a

> mess.... any guesses how much ?

> By the way, a colleague pointed out that the 55 Ci

> in the exit signs would

> by now have decayed to 25 Ci, due to 14 years of

> decay (12.3 yr half-life).

> 

>  Jaro

> http://www.cns-snc.ca/branches/quebec/quebec.html

> 

> 

>

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=====

+++++++++++++++++++

""A fanatic is one who cannot change his mind and won't change the subject."

Winston Churchill



-- John

John Jacobus, MS

Certified Health Physicist

e-mail:  crispy_bird@yahoo.com



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