From: Eugene Ngai <eugene_ngai**At_Symbol_Here**COMCAST.NET>
Subject: Re: [DCHAS-L] Gas Cylinder Implosion Video?
Date: Thu, 18 Apr 2019 06:29:22 -0400
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: 002301d4f5d1$99e70090$cdb501b0$**At_Symbol_Here**

Gas cylinders are designed to be vacuumed. I’m not aware of any video that shows this.



Eugene Ngai

Chemically Speaking LLC




From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU> On Behalf Of Debbie M. Decker
Sent: Wednesday, April 17, 2019 8:04 PM
Subject: [DCHAS-L] Gas Cylinder Implosion Video?




Does anyone have a video of a compressed gas cylinder imploding due to an internal vacuum?


We have the tanker car implosion video and assorted videos of regulators and valves getting sheared off but haven’t been able to come up with one that illustrates that internal vacuum is bad.





Debbie M. Decker, CCHO, ACS Fellow

Past Chair, Division of Chemical Health and Safety

Councilor and Programming Co-Chair

University of California, Davis





Birkett's hypothesis: "Any chemical reaction

that proceeds smoothly under normal conditions,

can proceed violently in the presence of an idiot."



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