[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: AW: Xenolite Protective clothing
I could be wrong about this, but I believe that materials in non-lead aprons are selected
for their absorption characteristics in energy ranges common to diagnostic imaging.
The aim of this is to produce a lighter apron.
-Gary Isenhower
On 3 Dec 2004 at 5:22, John Jacobus <crispy_bird@YAHOO.COM> wrote:
> Technically, you can use any various materials to
> provide shielding. Many are composites of more than
> one. Tungsten is in "vogue" as it has become cheaper
> due, I believe, to increased production by the
> Chinese. However, you have to make up the attenuation
> properties of lead with more of the material.
> http://hps.org/publicinformation/ate/q1742.html
>
> Again, the advantage of using non-lead aprons, gloves,
> etc., is the generation of non-hazardous waste. There
> is a disposal concern with lead, not barium.
>
> --- Franz Schönhofer <franz.schoenhofer@chello.at>
> wrote:
>
> > Dear Ed, dear John,
> >
> > I do not know for sure, whether lead aprons should
> > be replaced by other
> > materials, the only reason I can think of, is that
> > "lead" is toxic.
> >
> > So is barium! "Barium" is a metal, which would react
> > probably violently
> > with oxigen and water. I would believe that barium
> > sulphate might be
> > used in whatever matrix. I cannot believe that its
> > use in aprons would
> > be comparable to lead. Tungsten (Wolfram in German)
> > has a high
> > absorption possibility, is (has been) used in
> > weapons for high
> > penetration capability just as depleted uranium. I
> > guess that tungsten
> > will be much more expensive than lead and its
> > shielding efficiency would
> > be considerably less than for lead.
> >
> >
> > So why should one replace the good old lead aprons
> > with less efficient
> > and similarily "poisonous" materials?
> >
> >
> >
> > Franz Schoenhofer
> > PhD, MR iR
> > Habicherg. 31/7
> > A-1160 Vienna
> > AUSTRIA
> > phone -43-0699-1168-1319
> >
> >
> -------------------------------------------------------------------- >
> > > -----Ursprüngliche Nachricht----- > > Von:
> owner-radsafe@list.vanderbilt.edu > [mailto:owner- > >
> radsafe@list.vanderbilt.edu] Im Auftrag von John > Jacobus > >
> Gesendet: Freitag, 03. Dezember 2004 00:17 > > An: Baratta, Edmond J;
> radsafe@list.vanderbilt.edu > > Betreff: Re: Xenolite Protective
> clothing > > > > The material is made from barium and wolfram > >
> (tungsten) > > > > http://www.scanrad.no/Xenolite.htm > > > > Also,
> try > > http://www.apc-cardiovascular.co.uk/xenolite.htm > > > > > >
> --- "Baratta, Edmond J" <EBARATTA@ORA.FDA.GOV> > wrote: > > > > > Does
> anyone have any information about Xenolite > > > Protective clothing
> It > > > supposedly is used to replace lead aprons and > other > > >
> protective clothing. > > > > > > > > > > > > Thanks, > > > > > > > > >
> > > > Ed > > > > > > > > > > > > Edmond J. Baratta > > > > > >
> Radiation Safety Officer > > > > > > Tel. No. 781-729-5700, ext 728 >
> > > > > > FAX: 781-729-3593 > > > > > > > > > > > > > > > > > > =====
> > > +++++++++++++++++++ > > "That government is the strongest of which
> every > man feels himself a > > part." > > Thomas Jefferson > > > > --
> John > > John Jacobus, MS > > Certified Health Physicist > > e-mail:
> crispy_bird@yahoo.com > > > >
> __________________________________________________ > > Do You Yahoo!?
> > > Tired of spam? Yahoo! Mail has the best spam > protection around
> > > http://mail.yahoo.com > > >
> **********************************************************************
> ** > > You are currently subscribed to the Radsafe > mailing list. To
> > > unsubscribe, send an e-mail to > Majordomo@list.vanderbilt.edu
> Put the > > text "unsubscribe radsafe" (no quote marks) in the > body
> of the e-mail, > > with no subject line. You can view the Radsafe >
> archives at > > http://www.vanderbilt.edu/radsafe/ > > > >
>
>
> =====
> +++++++++++++++++++
> "That government is the strongest of which every man feels himself a
> part." Thomas Jefferson
>
> -- John
> John Jacobus, MS
> Certified Health Physicist
> e-mail: crispy_bird@yahoo.com
>
>
>
> __________________________________
> Do you Yahoo!?
> Yahoo! Mail - Helps protect you from nasty viruses.
> http://promotions.yahoo.com/new_mail
> **********************************************************************
> ** You are currently subscribed to the Radsafe mailing list. To
> unsubscribe, send an e-mail to Majordomo@list.vanderbilt.edu Put the
> text "unsubscribe radsafe" (no quote marks) in the body of the e-mail,
> with no subject line. You can view the Radsafe archives at
> http://www.vanderbilt.edu/radsafe/
>
************************************************************************
You are currently subscribed to the Radsafe mailing list. To
unsubscribe, send an e-mail to Majordomo@list.vanderbilt.edu Put the
text "unsubscribe radsafe" (no quote marks) in the body of the e-mail,
with no subject line. You can view the Radsafe archives at
http://www.vanderbilt.edu/radsafe/