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Subject: Re: Fume Hoods
Date: Wed, 21 Sep 2011 20:08:39 -0400
Author: Ken Simolo
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Subject: Re: Fume Hoods
Date: Wed, 21 Sep 2011 21:42:27 -0400
Author: Peter Zavon
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Date: Wed, 21 Sep 2011 20:09:47 -0400
Reply-To: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: Beltis.K**At_Symbol_Here**TIAXLLC.COM
Subject: Re: Fume Hoods
In-Reply-To: <E3FF42E2803F1D4B8B2EBEF1AD8AD031431D5CC5**At_Symbol_Here**ex149013.bemisco.net>
A major consideration should be disposal costs of the spent filters and
the effect it might have on your state or federal hazardous waste
generator status.
-Kevin
************************************************************
Kevin J. Beltis
Director of Health, Safety and Environment
TIAX LLC
Office: 781.879.1222
FAX: 781.879.1202
Mobile: 508.934.9382
Address:
35 Hartwell Avenue
Lexington, MA 02421-3102
TIAX, "Powered by Innovation"
************************************************************
TIAX LLC is a privately held company at the intersection of business and
technology. Formerly Arthur D. Little's Technology and Innovation
business, TIAX builds on its rich heritage, creating business
opportunities and growth through the power of science, technology, and
innovation.
"Clark, Richard C"
Sent by: DCHAS-L Discussion List
09/21/2011 01:07 PM
Please respond to
DCHAS-L Discussion List
To
DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
cc
Subject
Re: [DCHAS-L] Fume Hoods
Michael:
A concern that your lab designers will be bringing to the table is how the
ducted hoods will upset the HVAC. Certainly, planning HVAC for ductless
hoods is much simpler (and cheaper). However, the reasons given by others
about the inadequacies of ductless hoods can't be minimized.
The building airflow must not only accommodate the draw of the ducted
hoods, but it also must compensate for the outside temperature (your
climate). I highly recommend a remote source of make-up air rather than a
hood that supplies its own make-up air from outside. The inline heaters
are never good enough to compensate for truly cold temperatures and
incoming hot air will be most uncomfortable as well as ruining any
temperature-controlled processes in the hoods. Finally, the makeup air
design should also compensate for door openings and closings. Opening and
closing a door shouldn't disrupt the hood face velocity. Be alert to
these issues and make sure they are part of the design; local HVAC
engineers rarely design laboratories and they will sweep these issues
under the carpet.
Richard Clark
Sr. Research Chemist
Bemis Innovation Center
Neenah, WI 54956
From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**list.uvm.edu] On Behalf Of
Michael Hojjatie
Sent: Wednesday, September 21, 2011 10:08 AM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: [DCHAS-L] Fume Hoods
Dear colleagues:
We are in the process of building a new Laboratory and contemplating
between using Dustless Fume Hoods vs. Ducted Exhaust Hoods. We will be
using a variety of hazardous chemicals including carbon disulfide,
acetonitrile, toluene, benzene, some carcinogenic suspect chemicals,
hydrogen sulfide and sulfur dioxide gases.
I appreciate sharing your experiences with ductless fume hoods and whether
you recommend these type of hoods for hazardous chemical work using the
aforementioned chemical examples as well as advantages and disadvantages
of these hoods vs. the ducted exhaust hoods (safety concerns, costs,
maintenance, etc.)
Thanks,
Michael Hojjatie, Ph.D.
R&D director, TKI
This email and any attachments may contain confidential and/or proprietary
information. If you are not the intended recipient, you are not authorized
to read, copy or use the contents of the email or any attachment. If you
have received this email in error, please let us know by reply and then
delete it from your system.
A major consideration should be disposal
costs of the spent filters and the effect it might have on your state or
federal hazardous waste generator status.
-Kevin
************************************************************
Kevin J. Beltis
Director of Health, Safety and Environment
TIAX LLC
Office: 781.879.1222
FAX: 781.879.1202
Mobile: 508.934.9382
Address:
35 Hartwell Avenue
Lexington, MA 02421-3102
TIAX, "Powered by Innovation"
************************************************************
TIAX LLC is a privately held company at the intersection of business and
technology. Formerly Arthur D. Little's Technology and Innovation business,
TIAX builds on its rich heritage, creating business opportunities and growth
through the power of science, technology, and innovation.
"Clark, Richard C"
<rcclark**At_Symbol_Here**BEMIS.COM>
Sent by: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**list.uvm.edu>
09/21/2011 01:07 PM
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Please respond to
DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**list.uvm.edu> |
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| DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
|
|
cc
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Subject
| Re: [DCHAS-L] Fume Hoods |
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Michael:
A concern that your lab designers
will be bringing to the table is how the ducted hoods will upset the HVAC.
Certainly, planning HVAC for ductless hoods is much simpler (and
cheaper). However, the reasons given by others about the inadequacies
of ductless hoods can't be minimized.
The building airflow must not
only accommodate the draw of the ducted hoods, but it also must compensate
for the outside temperature (your climate). I highly recommend a
remote source of make-up air rather than a hood that supplies its own make-up
air from outside. The inline heaters are never good enough to compensate
for truly cold temperatures and incoming hot air will be most uncomfortable
as well as ruining any temperature-controlled processes in the hoods. Finally,
the makeup air design should also compensate for door openings and closings.
Opening and closing a door shouldn't disrupt the hood face velocity.
Be alert to these issues and make sure they are part of the design;
local HVAC engineers rarely design laboratories and they will sweep these
issues under the carpet.
Richard Clark
Sr. Research Chemist
Bemis Innovation Center
Neenah, WI 54956
From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**list.uvm.edu]
On Behalf Of Michael Hojjatie
Sent: Wednesday, September 21, 2011 10:08 AM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: [DCHAS-L] Fume Hoods
Dear colleagues:
We are in the process of
building a new Laboratory and contemplating between using Dustless Fume
Hoods vs. Ducted Exhaust Hoods. We will be using a variety of hazardous
chemicals including carbon disulfide, acetonitrile, toluene, benzene, some
carcinogenic suspect chemicals, hydrogen sulfide and sulfur dioxide gases.
I appreciate sharing your
experiences with ductless fume hoods and whether you recommend these type
of hoods for hazardous chemical work using the aforementioned chemical
examples as well as advantages and disadvantages of these hoods vs. the
ducted exhaust hoods (safety concerns, costs, maintenance, etc.)
Thanks,
Michael Hojjatie, Ph.D.
R&D director, TKI
This email and any attachments
may contain confidential and/or proprietary information. If you are not
the intended recipient, you are not authorized to read, copy or use the
contents of the email or any attachment. If you have received this email
in error, please let us know by reply and then delete it from your system.
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