From: James Keating <jameskeating1944**At_Symbol_Here**GMAIL.COM>
Subject: Re: [DCHAS-L] Chemical Safety headlines from Google (13 articles)
Date: Wed, 8 Jul 2015 10:32:21 -0500
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: 005301d0b993$4918fd90$db4af8b0$**At_Symbol_Here**

When ammonia is stored in large tanks (ASME B&PC Section VIII, Div. 1 pressure vessels) the relief valve escape piping may vent to the atmosphere. In summer these tanks susceptible to an increase in pressure resulting from a rise in temperature. If the tank is not shaded rom direct sunlight and it is filled early in the morning the relief valve may lift in the afternoon releasing some of the contents to a containment system or directly to the atmosphere. Rail car relief valves vent to atmosphere.

Jim Keating
Safety Consultant

-----Original Message-----
From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**] On Behalf Of Paul Weller
Sent: Wednesday, July 8, 2015 9:58 AM
Subject: Re: [DCHAS-L] Chemical Safety headlines from Google (13 articles)

Has anyone else notice an increase in the number of ammonia leak reports? Is this indicative of lack of maintenance and/or aging equipment? Is it because the summer weather stresses the systems? Both?

Paul Weller

Paul Weller
Science Laboratory Manager-Chemistry
Elon University
2625 Campus Box
Elon, NC 27244
Phone 336.278.6225

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
The maintenance and hosting of the DCHAS-L archive is provided through the generous support of Safety Emporium.