From: "Chance, Brandon" <brandon.chance**At_Symbol_Here**QATAR.TAMU.EDU>
Subject: Re: [DCHAS-L] Utility panel modification inside fume hood
Date: November 8, 2012 9:46:29 AM EST
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: <CAKoY-_yzraNJ-zb9Xz=xwPwQj0XCnkNyycY6AXWFUYtQoP98CQ**At_Symbol_Here**>

Mary Ellen,

I am not sure about which hoods you are using, but here is the solution we use:

We have Fisher Hamilton hoods that have ventilated flammable storage cabinets built in underneath. They have about a 3 inch / 2 inch short piece of PVC pipe through the back of the cabinet into the bottom of the hood for ventilation. I have my chem labs that use vacuum techniques simply remove the shelf in the flame cabinet and thread their Tygon in to the hood through the ventilation opening. This solves two problems - the vacuum exhaust is directly ventilated through the space around the tubing and the tubing is ran directly from the cabinet behind the racks in the hoods, eliminating any modifications or clutter. They store their flammables in undercounter flame cabinets at the lab benches next to their hoods.


Brandon Chance, M.S.

Safety and Environmental Compliance Manager
Office of Building Operations & HSSE
Texas A&M University at Qatar

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From: Mary Ellen A Scott >
Reply-To: DCHAS-L >
Date: Thursday, November 8, 2012 5:26 PM
To: "DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU" >
Subject: [DCHAS-L] Utility panel modification inside fume hood


Has anyone ever altered their their fume hood? Here's my issue:

Many of our researchers use a vacuum pump under the fume hood and plumb the vacuum hose through the utility panel in order to connect to the glassware inside the work area.

This leaves the panel off or ajar inside the hood disrupting the vortex and permitting harmful vapors to enter inside the hood and possibly the surrounding area.

We would like to drill a hole into the utility panel to permit vacuum hose to enter snugly and permit the hood to function properly.

Would there be any special safety concerns in cutting out a hole in the panel due to the while poly resin material?

Would you have a better idea on how to get the hose into the hood?

We have drilled through the work platform in the past but most researchers use the utility panel entry. It seems that entry through the front of the hood interferes with worker use, leaves sash open and takes up more space.

Thanks in advance for any advice.

Mary Ellen

Mary Ellen Scott, PhD.
Safety Specialist II
Case Western Reserve University
EHS - Environmental Health and Safety
Service Building 1st Floor Rm 113
2220 Circle Dr.
Cleveland, OH 44106-7227
216-368-2236 (Fax)
"There is no science without fancy and no art without fact" - Vladimir Nabokov (1899-1977)

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