Date: Fri, 9 Nov 2007 09:42:51 -0500
Reply-To: "Benedetti, Bob" <bbenedetti**At_Symbol_Here**NFPA.ORG>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: "Benedetti, Bob" <bbenedetti**At_Symbol_Here**NFPA.ORG>
Subject: Re: Flammable storage grounding requirements
Comments: cc: "Burrill, Jason"
In-Reply-To: A<1AD4E907E9B6F648AEF1B3A20A9B0E1E79B040**At_Symbol_Here**>

RE:  Grounding of flammable liquids storage cabinets.

NFPA 30, Flammable and Combustible Liquids Code, does not require a flammable liquids storage cabinet to be grounded.  NFPA 30 also, by the way, doesn't require the cabinet to be ventilated, either.

If a cabinet has a grounding point, it's for the convenience of the user.  For example, the user might want to dispense from containers without taking them out of the cabinet.  Having the ground screw as part of the cabinet makes this easy:  the cabinet has a readily accessible point to attach a ground wire and the same point can be used for bonding wires for the containers being dispensed from and to.

NFPA 70®, National Electrical Code®, is not relevant to this discussion.  It has no information on grounding for purposes of control of static electricity.

You can view (but cannot copy) NFPA standards and codes by going to the following web page:

Scroll down to and select the desired document.  Scroll to the bottom of the next screen and select "Preview this document". Follow the instructions.  Because the "on-line" documents are located on an external server, expect system loading and response to take some time.

Robert P. Benedetti, CSP, PE
Principal Flammable Liquids Engineer
National Fire Protection Association
1 Batterymarch Park
Quincy, MA  02169-7471
617-984-7110  (FAX)
617-571-8494  (CELL)

NFPA Membership keeps you up-to-date!
Visit for more information.  Or call 800-344-3555.

Notice:  The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain confidential and/or privileged information.  If you are not the intended recipient, please notify Robert Benedetti immediately by replying to the message or by calling (617) 984-7433.  Please delete this message and any attachments from your system.  Thank you.

-----Original Message-----
From: DCHAS-L Discussion List [mailto:] On Behalf Of Burrill, Jason
Sent: Friday, November 09, 2007 9:26 AM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: [DCHAS-L] Flammable storage grounding requirements

Does anyone know if any regulatory agency (federal, local or state) that
would mandate that flammable cabinets be grounded if flammable liquids
are just being stored in them and are not being dispensed while being
housed in the cabinet?  I have checked the OSHA website and grounding is
only necessary if you are dispensing Class I flammable liquids and my
search of the internet has referenced NFPA 70 and NFPA 30 but I do not
have copies of those publications.

Thanks in advance for your replies. 


Jason Burrill

Manager, Histology

Charles River Laboratories

251 Ballardvale Street

Wilmington, MA 01887

Ph: 781-222-6152

Fax: 978-988-8793


**Please note new direct dial telephone number**


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