From: John Callen <jbcallen**At_Symbol_Here**GMAIL.COM>
Subject: Re: [DCHAS-L] Impact of Open Doors/Fans on Lab Ventillation
Date: Wed, 24 Feb 2021 18:26:20 -0600
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID: E10A228F-6CBE-4531-A0F3-357206381C2E**At_Symbol_Here**


Just on face value and taking a very conservative approach, I would continue doing "virtual/at home" labs until the science building is fully functional and operational.

Trailers may be fine for lectures and classroom studies but not for labs. Too many things you would need to worry about and contingency planning in the limited space trailers have.

Be Safe and Stay Healthy!

All My Best,

John B. Callen, Ph.D.
3M Personal Safety division - Retired
ACS/DCHAS Founding Member
(312) 632-0195

On Feb 24, 2021, at 5:40 PM, Melissa Anderson <manderson8**At_Symbol_Here**PASADENA.EDU> wrote:

Hi Everyone,

Our college is discussing returning our labs (currently virtual/at-home) to campus this Summer. We're currently teaching labs in portable trailers while our new science building gets constructed and it was suggested that we just open the doors to the outdoors and use fans to bring in outside air to increase ventilation. Is there anything we should be wary of in terms of this backfiring on us? Most of the gen chem labs don't use the fume hoods very much but our organic labs do use them quite often and I worry that open doors might have some unintended effects on fume hood airflow.

I've suggested that we take advantage of the college's sudden interest in getting us back on campus to bring an expert in to evaluate the situation. Any recommendations on what qualifications we should recommend to the higher-ups?


Melissa W. Anderson, Ph.D.
Chemistry Instructor, Division of Natural Sciences
Pasadena City College

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