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Previous by Date: Subject: Re: Odor Date: Mon, 1 Aug 2011 13:25:07 -0400 Author: Craig Conway |
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why do ventilation design guys always put the insulation on the inside of the duc t. It would insulate as well on the outside and would be easier to clean or replace and would not capture dirt and microbes and give them a place to g row.
Bill Watt
Wayne State U.
x-Chrysler
From: "Frank R - Demer (demer)" <demer**At_Symbol_Here**EMAIL.ARIZONA.EDU>To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Sent: Monday, August 1, 2011 1:
03:17 PM
Subject: Re: [DCHAS-L] Odor
A mixing box receives air from a central air handling unit that makes hot and cold air. The mixing box mixe s the hot and cold air to provide the desired air temperature to a room, ro oms or area. The mixing box is controlled by a thermostat. Mixi ng boxes are often lined with fiberglass blanket and sometimes have felt on the air volume control dampers. Cold air entering the mixing b ox has a higher relative humidity and problems often start on the fiberglas s at this location and/or on the cold duct air volume damper felt.
From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**LIST.UVM
.EDU] On Behalf Of Harrington, Rachel
Sent: Monday, August
01, 2011 8:56 AM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: Re:
[DCHAS-L] Odor
Hi Frank, thank you for your response. Pardon my ignorance, but what is a mixing box? My background is chem istry and the micro labs are still a vast unknown to me. Thanks!
Rachel E. Harrington, MPH, CHMM
Director- Office of Environmental, Health and Safety
Rosalind Franklin University of Medicine and Science
3333 Green Bay Road
North Chicago, IL 60064
847-578-3420 work
224-622-4244 mobile
847-775-6548 fax
LIFE IN DISCOVERY
From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**list.uvm
.edu] On Behalf Of Demer, Frank R - (demer)
Sent: Monday,
August 01, 2011 10:19 AM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject:<
/B> Re: [DCHAS-L] Odor
I investigated a similar "Sweaty gym clothes=" odor. The odor appeared annually when t he relative humidity was higher from our summer monsoons. Turne d out to be bacteria growing on the fiberglass liner of the mixing box. The fiberglass visually appeared to have something growing on it. Mold and bacteria cultures were done for personal interest. The mixin g box was replaced and the odor disappeared.
Frank R. Demer, MS, CIH, CSP
Health Safety Officer
Industrial Hygiene and Safety
University of Arizona
Department of Risk Management Services
Phone: 520.621.3585
Fax: 520.621.3706
Email: demer**At_Symbol_Here**email.arizona.edu
Mailing Address: P.O. Box 210300, Tucs on, AZ 85721-0300
Street Address: 220 W. 6th St., Tucson , AZ 85701 (2nd floor, East Bldg.)
Web Address: risk.arizona.edu < /P>
From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**LIST.UVM
.EDU] On Behalf Of Bradley Harris
Sent: Friday, July 29, 2
011 6:34 AM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: Re: [DCHA
S-L] Odor
Did anybody bring in a plant with a outside soil into the office? Sometimes soils in pots have odors.
Brad H.
On Jul 26, 2011, at 3:44 PM, Harrington, Rachel wrote:
We have a strong "dirty socks=" odor present in one of our micro labs. It=E2=80=99s a pretty typical lab using med ia and cultures, etc. and we are systematically removing everything a nd deconning but this odor is persisting. I know I have smelt this ch emical before, maybe back in my undergraduate days, but it is really a sick ening odor. Any ideas? Any help is greatly appreciated. T hank you!
Rachel E. Harrington, MPH, CHMM
Director- Office of Environmental, Health and Safety
Rosalind Franklin University of Medicine and Science
3333 Green Bay Road
North Chicago, IL 60064
847-578-3420 work
224-622-4244 mobile
847-775-6548 fax
LIFE IN DISCOVERY
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