From: NEAL LANGERMAN <neal**At_Symbol_Here**>
Subject: [DCHAS-L] Silane Fire and Explosion
Date: Sat, 3 Oct 2015 13:50:52 -0700
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: 001a01d0fe1d$31cf99e0$956ecda0$**At_Symbol_Here**

From Eugene Ngai, the Silane Guru-

Forwarded by Neal Langerman


From: ehs.grapevine**At_Symbol_Here** [mailto:ehs.grapevine**At_Symbol_Here**] On Behalf Of Eugene Ngai
Sent: Saturday, October 3, 2015 12:36 PM
To: 'Semi Grapevine' <ehs.grapevine**At_Symbol_Here**>
Subject: SEMI EHS GRAPEVINE - Silane Fire and Explosion


FYI. Sunedison Pasadena TX which was formerly MEMC had a silane explosion and fire injuring 4 people. This occurred during a line break. I am trying to get more details. As luck would have it, I'm presenting on Pyrophoric Materials on Oct 23 at the Hotzone HazMat Conference in Houston.


A month ago in another silane related incident, a user used an industrial vacuum cleaner to vacuum SiO2 particles from a baghouse. This exploded severely burning the worker. SiO2 particles can develop a significant charge, in addition some are not fully oxidized.


These are reminders that we all must be careful when handling silane.


Eugene Y. Ngai

Chemically Speaking LLC



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