Date: Fri, 2 Dec 2011 16:13:38 +0000
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Sender: DCHAS-L Discussion List <dchas-l**At_Symbol_Here**>
From: Michael Ng <Michael.Ng**At_Symbol_Here**LIU.EDU>
Subject: Re: Fume Hood
In-Reply-To: <1322838973.31377.YahooMailNeo**At_Symbol_Here**>

Electrical and plumbing lines are exposed in the laboratory. The plumbing lines are susceptible to chemical corrosion (particularly nitric acid) and the exposed electric lines pose a fire hazard.

The fume hood is inoperable until the panel cover is installed. End of story.

Michael Ng
Environmental Health and Safety Manager
Long Island University Brooklyn Campus
Buildings and Grounds
1 University Plaza M101
Brooklyn, NY 11201
Tel: (718)-488-1608
Fax: (718)-488-3337**At_Symbol_Here**
From: Chuck koch >
Reply-To: DCHAS-L >
Date: Fri, 2 Dec 2011 07:16:13 -0800
To: >
Subject: Re: [DCHAS-L] Fume Hood

Shouldn't use the fume hood unless it has the utility panel.   ANSI standard.
Chuck Koch, CIH, MPH
Foothills Environmental Inc.
303 905 2371

From: Mary Ellen A Scott >
Sent: Friday, December 2, 2011 5:02 AM
Subject: Re: [DCHAS-L] Fume Hood

The utility panel(s) are located inside the workplace along both sides of the hood and are used to access the plumbing for the water, air and gas outlets which are located next to the panel (s).

On Thu, Dec 1, 2011 at 12:39 PM, Michael E. Richardson > wrote:
Mary Ellen:
 What part of the fume hood are you referring to when you say „utility panel‰? If you are talking about the back where the small openings are inside the work area, then yes you are absolutely right. I know this as the baffle (or with our enclosures the plenum). It is specifically designed for best air flow with this in place.

From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**MED.CORNELL.EDU] On Behalf Of Mary Ellen A Scott
Sent: Thursday, December 01, 2011 10:30 AM
Subject: [DCHAS-L] Fume Hood

Hello Everyone,

When the utility panel on a chemical fume hood is missing is it safe to allow work to be preformed in the hood?

I would say work (synthesis, toxic gas use and powder decanting) should not be preformed until the panel be replaced for the following reasons:

1. Eddyies in the hood are likely to be form which may cause loss of containment.
2. Chemicals vapors are going into areas where they are not suppose go and may cause deterioration of the plumbing and joints
3. High Performance and Low flow hoods would be especially vulnerable to the loss of work space integrity.

Would anyone have a policy on hood repairs like the above or comments?
As always, thank you for your thoughts in advance.

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‰ ˆ Vladimir Nabokov (1899-1977)

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