About This Archive  | DCHAS-L 2009 Index   | DCHAS-L Yearly Index
person wearing a disposable face shield and surgical style mask

Check out Safety Emporium for your N95, N99, and face shield needs.

Previous by Date:
Subject: 3 more on class lab fume hoods
Date: Wed, 8 Apr 2009 14:50:25 -0400
Author: List Moderator 		Next by Date:
Subject: Re: Mercaptan in Gas Suppy
Date: Wed, 8 Apr 2009 15:47:32 -0400
Author: "Lazarski, Peter M."


Date: Wed, 8 Apr 2009 15:11:37 -0400
Reply-To: "Wawzyniecki Jr, Stefan" <stefan.w**At_Symbol_Here**UCONN.EDU>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: "Wawzyniecki Jr, Stefan" <stefan.w**At_Symbol_Here**UCONN.EDU>
Subject: Re: Mercaptan in Gas Suppy
Comments: To: "Labsafe**At_Symbol_Here**AOL.COM"
In-Reply-To: <c76.4335071f.370e4690**At_Symbol_Here**aol.com>

We had a similar experience in our Chemistry building when it was first constructed.  There was no odor f rom any of the gas jets.  The explanation is that the piping used absorbs the odorant until a point is reached where it is “conditioned”  and no longer absorbs it.  The same happened recently at another nearby university.  The only way to condition the pipes is to run the gas,  let it sit in the pipes to be absorbed, and continue this until you can sme ll it.  Whether one burns it off or allows it to be vented is a choice to be made based on monitoring ability.  I guess  the same could happen in a situation where the gas has not been used in a long time, although I usua lly see it mentioned with respect to new buildings.

 

-Stefan Wawzyniecki, CIH, CHMM< /font>

University of Connecticut  - R 20; Where Men are Men, but the Women are Champions”

 

 

 

From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**list.uvm.edu] On Behalf Of Jim Kaufman
Sent: Wednesday, April 08, 2 009 2:27 PM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: [DCHAS-L] Mercaptan in Gas Suppy

 

Has anyone encountered the situation where the odorant smell from the burner gas supply changed when the gas was not used for several months?  If so, any explanation why?

 

The individual who posed this questio n to me said that his "lost its rotten smell and now smells slightly musty and is much less noticeable".

 

Thanks ... Jim

 

James A. Kaufman, Ph.D.
President/CEO

The Laboratory Safety Institute (LSI)
A Nonprofit International Organization for
Safety in Science and Science Education
www.LabSafetyInstitute.org

192 Worcester Road, Natick, MA 01760-2252
508-647-1900 Fax: 508-647-0062
Cell: 508-574-6264 Res: 781-237-1335
jim**At_Symbol_Here**LabSafetyInsti tute.org
P We thank you for printing this e-mail only if it is necessa ry

 

New Deals on Dell Netbooks - Now starting at $299

Previous post   |  Top of Page   |   Next post


The content of this page reflects the personal opinion(s) of the author(s) only, not the American Chemical Society, ILPI, Safety Emporium, or any other party. Use of any information on this page is at the reader's own risk. Unauthorized reproduction of these materials is prohibited. Send questions/comments about the archive to secretary@dchas.org.
The maintenance and hosting of the DCHAS-L archive is provided through the generous support of Safety Emporium.