Comments from others in the "elder generations".

> On 08/31/2021 9:53 AM Richard Palluzi <000006c59248530b-dmarc-request**At_Symbol_Here**lists.princeton.edu> wrote:
>
>
> Remember though that NFPA 45 recommends you never let it go below 4 ACH even when unoccupied off hours.
>
> And, to add to your comment, I remember saving a lot by simply training our security guards to close any open hood doors that they found during their tours after 7 PM. And record the hood location so the PI could get a gentle - and then not so gentle - reminder until it became a habit.
>
> Richard Palluzi
> PE, CSP,FAIChE
>
> Pilot plant and laboratory consulting, safety, design, reviews, and training
> www.linkedin.com/in/richardppalluzillc/
>
> Richard P Palluzi LLC
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>
> -----Original Message-----
> From: ACS Division of Chemical Health and Safety On Behalf Of Ralph Stuart
> Sent: Tuesday, August 31, 2021 10:43 AM
> To: DCHAS-L**At_Symbol_Here**Princeton.EDU
> Subject: Re: [DCHAS-L] Fume hood article of interest
>
> > >Putting 58 fume hoods to sleep while unused results in substantial energy savings.
>
> Sometime I long for my days in the labs when fume hoods had these things called â??on/off switchesâ??â?|
>
> - Ralph
>
> Ralph Stuart, CIH, CCHO
> ralph**At_Symbol_Here**rstuartcih.org
>
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