From: Michael Schaffer <MichaelS**At_Symbol_Here**PSYCHEMEDICS.COM>
Subject: Re: [DCHAS-L] Article
Date: Sat, 28 Mar 2020 18:52:18 +0000
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: 516F7131-F7E0-484C-BF5C-37075D729B84**At_Symbol_Here**psychemedics.com
In-Reply-To <1078431744.326316.1585418903341**At_Symbol_Here**mail.yahoo.com>


I have a question.

We recently remodeled our lab. 
Had a ton of HVAC problems during and after construction.
Getting through them but very painful and expensive.
One of the issues was in the 4 lab areas, they installed up to three thermostats on the same wall within inches of each other!!!
We fought with the mechanical electrical engineers. 
I dont know where to look to establish proper  placement and force them to move them as the rooms are large and full of equipment.
Is there a standard practice?
Thanks



Michael I. Schaffer, Ph.D., F.A.B.F.T., NRCC-TC

VP Laboratory Operations

Psychemedics Corporation

5832 Uplander Way

Culver City, CA 90230

310-216-7776 (phone)

310-216-6662 (Fax)

(800) 522-7424 (toll free) Extension 140

 

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On Mar 28, 2020, at 11:30 AM, Monona Rossol <0000030664c37427-dmarc-request**At_Symbol_Here**lists.princeton.edu> wrote:

?

This Message Originated Outside the Company

Richard,  Brilliant and very clearly written.  I would only argue with the very first line which is:

"Laboratory ventilation is very different from commercial and industrial systems.

While I agree that lab ventilation is very different from commercial, heating and air-conditioning ventilation, I do not agree that it is different from industrial ventilation.  Lab ventilation is industrial ventilation.  I have a problem with the heating and air-conditioning standards being used when there is a better code developed by the American Conference of Governmental Industrial Hygienists (ACGIH) which should be used instead.

Every problem you describe is exactly the same problem in industrial ventilation design.  I can't speak for large industrial systems for refineries and major manufacturing, but I know they are identical for: wood shops; foundries; welding and metal working shops; sculpture, ceramic, and fine art studios; and theatrical scene, prop, and costume shops.  Now we are seeing the same problems in the new fab labs which are full of 3D printers, CNC routers, laser cutters, water jet cutters, and other new technology.

And I love the picture which could be titled  "how not to design a canopy hood."

Monona


-----Original Message-----
From: Richard Palluzi <000006c59248530b-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Sent: Sat, Mar 28, 2020 12:32 pm
Subject: [DCHAS-L] Article

Some of the members of this list might be interested in this article:
 
The Ten Most Common Laboratory Ventilation Mistakes
 
at
 
 
 
Richard Palluzi
72 Summit Drive
Basking Ridge, NJ 07920
rpalluzi**At_Symbol_Here**verizon.net
908-285-3782
 
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