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Subject: [DCHAS-L] Machining manganese aluminum alloys
Date: Monday, June 20, 2022 at 7:58:20 AM
Author: Ralph Stuart <Ralph.Stuart**At_Symbol_Here**keene.edu> 		Next by Date:
Subject: [DCHAS-L] Opinion: What I learned from my lab accident
Date: Tue, 21 Jun 2022 08:22:20 -0400
Author: CHAS membership

From: Monona Rossol <0000030664c37427-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>
Subject: Re: [DCHAS-L] Machining manganese aluminum alloys
Date: Mon, 20 Jun 2022 15:24:28 +0000
Reply-To: Monona Rossol <actsnyc**At_Symbol_Here**cs.com>
Message-ID: 1021075756.6181861.1655738668884**At_Symbol_Here**mail.yahoo.com
In-Reply-To


Start with NFPA 484 for the safety issues with machining an active metal alloy.  Then go to the OSHA rules which require a risk assessment for the workers and there are PEL and TLV standards for aluminum, manganese, and probably any other metal in the alloy.  So some personal monitoring should set the required precautions. 

You might also want to make dang sure this area of aluminum work is isolated from any ferric metal working.  As a start, read the OSHA letter of interpretation of October 8, 2009  or go to 
https://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=INTERPRETATIONS&p_id=27413

Seems pretty straightforward to me.    Monona

-----Original Message-----
From: Ralph Stuart <ralph.stuart**At_Symbol_Here**KEENE.EDU>
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Sent: Mon, Jun 20, 2022 7:58 am
Subject: [DCHAS-L] Machining manganese aluminum alloys

I have a colleague who works with metallurgy researchers who develop experimental manganese-aluminum alloys for which there is minimal hazard, particularly toxicological, information. These alloys are machined into various shapes on mills. He is interested in developing a best practices document for this work, focusing on how to maintain good housekeeping practices, researching hazards associated with novel alloys, and engineering controls appropriate to this work.

I wonder if anyone knows of a good reference for this kind of work?

Thanks for any help with this inquiry.

- Ralph


Ralph Stuart, CIH, CCHO
Environmental Safety Manager
Keene State College
603 358-2859


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