From: Dr Bob <drbob**At_Symbol_Here**FLOWSCIENCES.COM>
Subject: Re: [DCHAS-L] Venting flammaable cabinets
Date: Tue, 19 Jul 2016 12:37:22 +0000
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: 7B39633B01F4EE42A269E983C42F5A480AF22158**At_Symbol_Here**SULFATE.fsidomain.local
In-Reply-To <1468929862371.24223**At_Symbol_Here**>

See below from NFPA 30-2012


“ If a storage cabinet is not ventilated, the vent openings shall be sealed with the bungs supplied with the cabinet or with bungs specified by the cabinet manufacturer.”


The use of both bung holes IF ventilation is used is only implied by this passage.  However, since flammable cabinets are a closed environment except for these holes, little air will circulate through a single open bung hole which is not actively ventilated.


Very Truly Yours,


Dr. Bob Haugen

Director of Product and Technology Development

Flow Sciences Inc.

2025 Mercantile Drive

Leland, NC 28451


Phone 910 332 4878


From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**] On Behalf Of Kohler, Christopher E
Sent: Tuesday, July 19, 2016 8:04 AM
Subject: [DCHAS-L] Venting flammaable cabinets




If a flammable cabinet is vented, is it okay to open the supply bung and draw air from the room or do both the exhaust an supply have to be ducted to an outside source?


I have been under the impression that NFPA 30 requires both supply and exhaust be ducted to an outside source or the cabinet not vented at all. Leaving the supply bung open in the room even with a spark arrestor seems odd to me.




Chris Kohler

IUB Laboratory Safety Manager

Environmental Health and Safety

Bloomington, IN 47405





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