From: "Stuart, Ralph" <Ralph.Stuart**At_Symbol_Here**KEENE.EDU>
Subject: Re: [DCHAS-L] Exhaust fan design question
Date: Thu, 10 Nov 2016 13:24:30 +0000
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: 1E658AFC-8674-460E-8329-6EF3E6A74EDB**At_Symbol_Here**

> >I hope you the booth is not actually in the wood shop. Flammable vapors are incompatible with combustible dusts.
Good point. It is in a separate room from the wood shaping area.

> >Most spray booths run only on demand since they exhaust a lot of cfm. Multiply the area of the face by a minimum velocity of 100 ft per minute. No system can afford to hurl that amount of air out the stack.

I've seen systems that do; some of our teaching labs have a similar amount of air moving through them.

Thanks for the reminder about the dust / VOC issue.

- Ralph

Ralph Stuart, CIH, CCHO
Chemical Hygiene Officer
Keene State College


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