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Subject: [DCHAS-L] Chemical Safety headlines (14 articles)

Date: Jan 18, 2019 13:08 UTC

Author: DCHAS Membership Chair <membership**At_Symbol_Here**DCHAS.ORG>

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Subject: Re: [DCHAS-L] FYI - Fire ball on University roof in France

Date: Jan 19, 2019 10:16 UTC

Author: Eugene Ngai <eugene_ngai**At_Symbol_Here**COMCAST.NET>

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From: Jeffrey Lewin <jclewin**At_Symbol_Here**MTU.EDU>

Subject: Re: [DCHAS-L] FYI - Fire ball on University roof in France

Date: Jan 18, 2019 13:09 UTC

Reply-To: ACS Division of Chemical Health and Safety

In-Reply-To: Re: [DCHAS-L] FYI - Fire ball on University roof in France

Demystify: 

At 2 seconds, immediately following the explosion, you can see an object arching of the top of the building. The object is again visible in the second video of the explosion from a different video.

Jeff


On Fri, Jan 18, 2019 at 5:51 AM Eugene Ngai <eugene_ngai**At_Symbol_Here**comcast..net> wrote:

Got clarification from one of my European colleagues. He said there was a roof sealing project going on so it is likely a propane cylinder that exploded because they are cooking tar. There are also no spring loaded CG-7 devices on them as in the US. Even in the US with a PRD, a fully engulfing fire would rupture the cylinder in 10-15 minutes. The initial assessment in a fire scene based on risk and reward in a fire with propane cylinders is significant. There is a point when it is not safe to initiate an attack with a hose stream