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Subject: Re: [DCHAS-L] Campus Carry Policies
Date: Friday, February 9, 2018 at 12:00:59 PM
Author: Tammy M. Lutz-Rechtin <tlutzrec**At_Symbol_Here**UARK.EDU> 		Next by Date:
Subject: Re: [DCHAS-L] Webinar: Chemical Educators and Researchers: Understanding your legal liability and how to protect yourself
Date: Fri, 9 Feb 2018 11:11:13 -0600
Author: Alan Hall

From: Jeffrey Lewin <jclewin**At_Symbol_Here**MTU.EDU>
Subject: Re: [DCHAS-L] Dewar flask safety resources
Date: Fri, 9 Feb 2018 17:03:26 +0000
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: CAEwQnqiS_YLzCmeXHQP+UPPTh=cUhT1DVBa6g-6srcWJVViJTQ**At_Symbol_Here**mail.gmail.com
In-Reply-To


For us, the bigger challenge is educating researchers to use dewars rated for their cryogenic liquid and that Thermos bottles don't meet those guidelines.

No video, but I recall reading this story a while back about someone trying to get rid of a thermos with dry ice in it after the lid got stuck. I have no idea if this is a true story or made up:

http://minusbat.livejournal.com/180556.html#t1296204

Jeff


On Fri, Feb 9, 2018 at 10:24 AM Christina Dillard <cdillard**At_Symbol_Here**mos.org> wrote:

Does anyone have a good reference for the safety of Dewar flasks?

Has anyone set limits on how long a Dewar flask may be in service before it must be replaced? What are those limits? What are they based upon?

Does anyone have a good video of a Dewar flask implosion?

Thanks,

Christina

Christina Dillard | Environmental Health & Safety (EHS) Program Manager

Museum of Science | Facilities Dept. | One Science Park | Boston, MA 02114-1099

P 617-589-4249 | F 617-589-0101 |M 781-789-1178| cdillard**At_Symbol_Here**mos.org | www..mos.org

--- For more information about the DCHAS-L e-mail list, contact the Divisional secretary at secretary**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas
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Jeff Lewin
Chemical Safety Officer
Compliance, Integrity, and Safety
Environmental Health and Safety
Michigan Technological University
Houghton, MI 49931

O 906-487.3153
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