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Previous by Date: Subject: [DCHAS-L] Met-L-X or Lith-X Extinguishing Medium Date: Wednesday, January 29, 2014 5:21:50 PM Author: Brandon S. Chance <bchance**At_Symbol_Here**PRINCETON.EDU> |
Next by Date: Subject: Re: [DCHAS-L] Met-L-X or Lith-X Extinguishing Medium Date: Wed, 29 Jan 2014 20:29:41 -0500 Author: Ernie Lippert |
Hi Brandon:
Our Fire Prevention/Fire Operations folks do not permit Class D fire extinguishers in labs. There are several “flavors,” if you will, of Class D fire extinguisher,
depending on the potential fire. A lab could end up with two or three different Class D extinguishers, depending on the materials in use. Also, Class D extinguishers weigh a ton! And they are expensive to maintain.
My pyrophoric/water reactives users tend towards Met-L-X or dry sand for the small quantities they work with. Dry sand seems to be the agent of choice and
most of these researchers keep a small bucket of dry sand nearby where they work. Working in a dry box or glove box is preferred.
Hope this helps,
Debbie
Debbie M. Decker, CCHO
Safety Manager
Department of Chemistry
University of California, Davis
122 Chemistry
1 Shields Ave.
Davis, CA 95616
(530)754-7964
(530)304-6728
dmdecker**At_Symbol_Here**ucdavis.edu
Birkett's hypothesis: "Any chemical reaction
that proceeds smoothly under normal conditions,
can proceed violently in the presence of an idiot."
From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**MED.CORNELL.EDU]
On Behalf Of Brandon S. Chance
Sent: Wednesday, January 29, 2014 2:22 PM
To: DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU
Subject: [DCHAS-L] Met-L-X or Lith-X Extinguishing Medium
DCHAS,
I am looking into the advantages and disadvantages of using Met-L-X or Lith-X scoopable dry powder extinguishing agent versus outfitting labs with the extremely
large dry powder extinguishers that this material traditionally comes in. I am hoping for a solution for the usual pyrophoric and reactive metal suspects; alkyllithiums, trimethyl aluminum, diethyl zinc, potassium, sodium, magnesium, etc.
If anyone has an experience with using or training with this extinguishing, I would appreciate any insight that you might have. I have already contacted Ansul
and am awaiting their response.
Regards,
Brandon S. Chance, M.S., CCHO
Program Manager, Chemical Safety
Environmental Health and Safety
Princeton University
262 Alexander Street
Princeton, NJ 08540
609-258-7882 (office)
609-955-1289 (mobile)
609-258-1804 (fax)
"The second I feel like I made it, the second I feel like I've arrived, that's the second someone will take my spot. And I like my spot." J.J. Watt – Houston Texans
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