Date: Thu, 18 Oct 2007 08:02:24 -0400
Reply-To: "Lazarski, Peter M." <Peter.Lazarski**At_Symbol_Here**US.NGRID.COM>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: "Lazarski, Peter M." <Peter.Lazarski**At_Symbol_Here**US.NGRID.COM>
Subject: Re: bomb calorimeter failure
In-Reply-To: A<76C725CCAA84934BABDC59C4381279FE02EE256A**At_Symbol_Here**>

We've used bomb calorimeters in our laboratory since before I was hired in 1978 and have never had an accident. We've only relied on the manufacturer's operating and service manuals which state you should not fire the bomb if gas bubbles are observed anywhere after immersion indicating a gas leak. You should then disassemble the parts and install new seals immediately. You should also install new seals after 500 firings and lastly, the bomb should be pressure tested periodically by returning it to the manufacturer. All personnel would be acquainted with these manual as part of their training. If you can't locate the copy that came with the calorimeter, I'm sure something would be available from either the sales representative or on line. The information contained in this e-mail message and any attachments may be confidential. It is intended only for the use of the individual or entities named above. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail at the originating address. Peter Lazarski National Grid USA Chemical Laboratory, Bldg. 1 7437 Henry Clay Blvd. Liverpool, NY 13088 (315)460-2114 -----Original Message----- From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**LIST.UVM.EDU] On Behalf Of dturner**At_Symbol_Here**SHORTER.EDU Sent: Wednesday, October 17, 2007 5:52 PM To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU Subject: [DCHAS-L] bomb calorimeter failure We had the rubber seal fail in a bomb calorimeter today, resulting in rapid release of gas, splashing a student with water and breaking a mercury thermometer. No harm done, they got to see a mercury cleanup, and they are glad they were wearing eye protection. However. Any suggested protocols to keep this from happening again? Something about a replacement schedule for seals maybe? Dean Turner **** For your information: KeySpan is now part of National Grid.**** ******************************************************************************** This e-mail and any files transmitted with it, are confidential to National Grid and are intended solely for the use of the individual or entity to whom they are addressed. If you have received this e-mail in error, please reply to this message and let the sender know.

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