From: ACTSNYC**At_Symbol_Here**CS.COM
Subject: Re: [DCHAS-L] Addition to 40 micron aluminum powder:
Date: February 29, 2012 11:32:06 AM EST
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: <28c09.6ca0c69c.3c7fad06**At_Symbol_Here**>

Tilak, If I were you, I'd be concerned about another issue.  We've had powdered aluminum blow during transfer from one container to another.  All it takes is a static electric discharge.  So I would want to watch them work and see if there are any pouring or dumping procedures that put a significant amount of powder in the air at one time and if there are any potential sources of ignition or static charge.

One of the scene shops here takes a yard square of damp muslin cloth which can be seen through and throws it over their arms during transfer of aluminum and bronze powders to reduce the likelihood of a static discharge and escape of the powder to other surfaces.  And other uses a home made but rather effective glove box just for powder transfer and mixing.

While the exhaust should be explosion proof in case of an accident, the dust should not be getting that far from the process ordinarily.  I would get nasty if I was seeing aluminum powder on surfaces in any shop I have a say over.

Monona  (U of W alumn)

In a message dated 2/29/2012 10:19:32 AM Eastern Standard Time, tchandra**At_Symbol_Here**FPM.WISC.EDU writes:

Dear DCHAS members:

Addition to 40 micron aluminum powder:

One of PI in our campus is using 40 micron aluminum powder for the research purpose. After experiment/manipulations, aluminum dust is generated (fine layer of Al dust) in the enclosed room (the room is isolated area, precisely build for handling the manipulation, it is not common laboratory, also exhaust duct is equipped with appropriate filter and has explosion proof light fixture). I am only interested in cleaning procedure of the dust from the surfaces.



Tilak Chandra, Ph.D.

Chemical Safety Specialist
Environment, Health and Safety
University of Wisconsin-Madison
30 East Campus Mall
Madison, WI 53715
Ph. 608-890-0255
FAX 608-262-6767

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