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From: neal**At_Symbol_Here**chemical-safety.com
Subject: Re: [DCHAS-L] Restrictive Flow Orifice
Date: Mar 1, 2022 18:43 UTC
Reply-To:
ACS Division of Chemical Health and Safety
In-Reply-To: [DCHAS-L] Restrictive Flow Orifice
Eugene
Where is the article available?
Thx
Neal
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Stay healthy and prosper
NEAL LANGERMAN, Ph.D.
ADVANCED CHEMICAL SAFETY, Inc. (Retired)
5340 Caminito Cachorro
SAN DIEGO CA 92105
+1 (619) 990-4908
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> On Behalf Of Eugene Ngai
Sent: Monday, February 28, 2022 8:32 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: [DCHAS-L] Restrictive Flow Orifice
After writing it on and off for 10 years, I just completed the article on the Development of the Restrictive Flow Orifice for a Cylinder Valve. Amazing to go back and relive 40 years of history. I believe it is important for all to know the decisions and basis for how we finalized the current design of this key safety item that was urgently needed due to the many serious silane fires and explosions in the 1970’s and 80’s. I am now working on a companion article The Development of an Electronic Specialty Cylinder Valve and Outlet Connection for the same reasons. This was parallel to the RFO development path. I continue to believe that we need to pass along our learnings so that history does not repeat itself.
Eugene Ngai
Chemically Speaking LLC
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