Edouard Bastarache Inc. on mon 3 oct 05
Hello all,
my most recent article on Smart.Conseil's site :
http://perso.wanadoo.fr/smart2000/beryllium.htm
Later,
"Ils sont fous ces quebecois"
"They are insane these quebekers"
"Est=E1n locos estos quebequeses"
Edouard Bastarache
Irreductible Quebecois
Indomitable Quebeker
Sorel-Tracy
Quebec
edouardb@sorel-tracy.qc.ca
www.sorel-tracy.qc.ca/~edouardb/Welcome.html
http://www.flickr.com/photos/potier/
http://perso.wanadoo.fr/smart2000/index.htm
http://www.digitalfire.com/education/toxicity/
Bruce Girrell on mon 3 oct 05
Just out of curiosity, what would we use beryllium oxide for?
My primary exposure to beryllium is in the form of beryllium-copper springs.
And when those things are machined we pretty much treat the dust as if it
were radioactive waste. What function does it serve in ceramics?
Bruce Girrell
envisioning the perfect beryllium/lead/cadmium/uranium glaze
pdp1@EARTHLINK.NET on mon 3 oct 05
HI Bruce,
Yahhhh...
The occasional boy or girl have gotten into some troubles when wishing to
tidy up some old Hammer or Wrench or other of Berylium alloy on say a fine
Belt Sander to grind the high spots from dents off.
Inhaleing the dusts of which is very bad of course.
Many of these composition Tools of course were made for use in Oil Fields
and the like, where the possibility of getting a spark from them was
something to be avoided by use of that alloy. All sorts of wrenches,
Hammers, Pliers and so on have been made of Berylium alloys.
"Gunmetal" as it were, being something of a predecessor alloy, used to make
various Tools for 'Powder Room' use or other spark-hazrd places, was not
toxic, even if of course one would prefer to avoid inhaling metallic dusts
of it also.
These Tools may be confused with Brass because of their color.
Anyway, just one of those things...
What are the Springs for you had been machining?
Phil
el ev
----- Original Message -----
From: "Bruce Girrell"
> Just out of curiosity, what would we use beryllium oxide for?
>
> My primary exposure to beryllium is in the form of beryllium-copper
springs.
> And when those things are machined we pretty much treat the dust as if it
> were radioactive waste. What function does it serve in ceramics?
>
> Bruce Girrell
> envisioning the perfect beryllium/lead/cadmium/uranium glaze
Edouard Bastarache Inc. on mon 3 oct 05
Bruce,
A special refractory oxide notable for its abnormally high thermal
conductivity.
Thermal-shock resistance is good.
It acts as a moderator for fast neutrons and is used for this purpose
in nuclear reactors.
It is also sometimes used as a constituent of special porcelains.
Do not forget I also write for the industry.
Instruments have been mounted on BeO blocks in space-craft.
Smart convinced me to write this article to scare people away
from using it, it was not an easy task, knowledge about its
toxicity has changed much in recent years.
I would not touch it wih a 1,000 foot pole, check the exposure limit :
Valeur d'Exposition Moyenne Pondérée (VEMP) :
0,00015 mg/m³ (expressed as Be (Beryllium).
II-Notes :
C2 : A suspected human carcinogen.
EM : Exposure to this chemical must be reduced to the minimum.
RP : Substance whose recirculation is prohibited
Later,
"Ils sont fous ces quebecois"
"They are insane these quebekers"
"Están locos estos quebequeses"
Edouard Bastarache
Irreductible Quebecois
Indomitable Quebeker
Sorel-Tracy
Quebec
edouardb@sorel-tracy.qc.ca
www.sorel-tracy.qc.ca/~edouardb/Welcome.html
http://www.flickr.com/photos/potier/
http://perso.wanadoo.fr/smart2000/index.htm
http://www.digitalfire.com/education/toxicity/
Bruce Girrell on tue 4 oct 05
Hi Phil,
Well, I work in the oilfield. Not only that, I work with big magnets. And
after more than a decade of doing so, I still manage to get a steel hammer
or wrench grabbed from my hand now and then by one of those suckers. You'd
think that I would learn. Brass and other non-magnetic tools are a godsend.
It is comical to watch someone trying to nail together a packing crate
containing a big magnet when he is using a magnetic hammer. Now, if we could
only find a non-magnetic soldering iron...
Anyway, the beryllium copper is used in two places. One is for an electrical
contact spring where we need to make good electrical contact between two
parts that must be able to slide relative to one another. The other
application is as a positioning spring, to hold some of our sensors close to
a pipe wall and away from the body of the instrument. They are non-magnetic,
non-corroding, and have a very good spring coefficient. But they are brittle
and we do have breakage problems with them. The have been designed out.
The tools that we make are designed to detect corrosion in oil & gas wells
and pipelines. The magnets saturate the pipe with magnetic flux and wherever
there is a local thinning of the metal due to corrosion or other issues
(like getting gouged with a backhoe tooth), the pipe is no longer capable of
containing the magnetic flux which "leaks" into the space between the pipe
and the tool where our sensors are located and it can be detected and
interpreted as to the amount of metal loss.
The physics part is pretty straightforward, but the packaging of the
instrument, so that everything fits inside the pipe and still does its job,
is the hard part. I work in the software end of things. The signals sent by
the tool are pretty meaningless to the casual observer. My job is to take
that information and turn it into images and numbers that makes sense to the
owner of the well or pipeline.
----- Original Message -----
From:
To:
Sent: Monday, October 03, 2005 3:25 PM
Subject: Re: Beryllium oxide
> HI Bruce,
>
>
> Yahhhh...
>
> The occasional boy or girl have gotten into some troubles when wishing to
> tidy up some old Hammer or Wrench or other of Berylium alloy on say a fine
> Belt Sander to grind the high spots from dents off.
>
> Inhaleing the dusts of which is very bad of course.
>
> Many of these composition Tools of course were made for use in Oil Fields
> and the like, where the possibility of getting a spark from them was
> something to be avoided by use of that alloy. All sorts of wrenches,
> Hammers, Pliers and so on have been made of Berylium alloys.
>
> "Gunmetal" as it were, being something of a predecessor alloy, used to
make
> various Tools for 'Powder Room' use or other spark-hazrd places, was not
> toxic, even if of course one would prefer to avoid inhaling metallic dusts
> of it also.
>
> These Tools may be confused with Brass because of their color.
>
> Anyway, just one of those things...
>
> What are the Springs for you had been machining?
>
>
>
>
> Phil
> el ev
>
> ----- Original Message -----
> From: "Bruce Girrell"
>
>
> > Just out of curiosity, what would we use beryllium oxide for?
> >
> > My primary exposure to beryllium is in the form of beryllium-copper
> springs.
> > And when those things are machined we pretty much treat the dust as if
it
> > were radioactive waste. What function does it serve in ceramics?
> >
> > Bruce Girrell
> > envisioning the perfect beryllium/lead/cadmium/uranium glaze
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv.ceramics.org
>
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>
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melpots@pclink.com.
>
Louis Katz on tue 4 oct 05
http://falcon.tamucc.edu/~lkatz/
On Oct 4, 2005, at 7:18 AM, Bruce Girrell wrote:
> Now, if we could
> only find a non-magnetic soldering iron...
Chunk of copper and a torch.
Used one on my organ pipes.
Louis
http://www.louiskatz.net
Wayne on tue 4 oct 05
Louis might be on to something here. Copper is not only a decent
conductor of electricity, but also of heat. A simple resistive
circuit to heat a (suitably insulated) copper "bar" ending in a
soldering iron tip shape might just do it, and be non-magnetic.
The idea of a torch intrigues me. Is anyone designing pressure
vessels made from ceramic? No rust, last forever...hmmmm.
Wayne "ooops, KABOOM!" Seidl
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Louis
Katz
Sent: Tuesday, October 04, 2005 10:43 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: Beryllium oxide
http://falcon.tamucc.edu/~lkatz/
On Oct 4, 2005, at 7:18 AM, Bruce Girrell wrote:
> Now, if we could
> only find a non-magnetic soldering iron...
Chunk of copper and a torch.
Used one on my organ pipes.
Louis
http://www.louiskatz.net
____________________________________________________________________
__________
Send postings to clayart@lsv.ceramics.org
You may look at the archives for the list or change your
subscription
settings from http://www.ceramics.org/clayart/
Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
Ivor and Olive Lewis on wed 5 oct 05
Interesting proposition Wayne. But I recall that if you pass a current =
through a conductor you generate a magnetic field. Or is My Physics out =
of date.
Best regards,
Ivor Lewis.
Redhill,
S. Australia.
Louis might be on to something here. Copper is not only a decent
conductor of electricity, but also of heat. A simple resistive
circuit to heat a (suitably insulated) copper "bar" ending in a
soldering iron tip shape might just do it, and be non-magnetic.
Edouard Bastarache Inc. on wed 5 oct 05
Ivor,
welcome back !!!
"Ils sont fous ces quebecois"
"They are insane these quebekers"
"Están locos estos quebequeses"
Edouard Bastarache
Irreductible Quebecois
Indomitable Quebeker
Sorel-Tracy
Quebec
edouardb@sorel-tracy.qc.ca
www.sorel-tracy.qc.ca/~edouardb/Welcome.html
http://www.flickr.com/photos/potier/
http://perso.wanadoo.fr/smart2000/index.htm
http://www.digitalfire.com/education/toxicity/
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