Date: Mon, 6 Apr 2009 07:57:21 -0400
Reply-To: "James A. Boehlert" <boehlert**At_Symbol_Here**PRINCETON.EDU>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: "James A. Boehlert" <boehlert**At_Symbol_Here**PRINCETON.EDU>
Subject: Re: Use of Vented Caps on Liquid Waste SAA Containers
Comments: To: David Bunzow
In-Reply-To: A<000001c9b646$8adaf0a0$a090d1e0$**At_Symbol_Here**net>


          & nbsp;     Check with the manufacturer and your local EPA for the specifics, but I think this may help you out.   http://www

Their claim: Meets safety regulations - Unique, patented design includes a latching lid and gasket that meets most local, state and federal safety regulations and requirements.

Best Regards,

          & nbsp;     Jim

James A. Boehlert Jr.

Program Manager - Chemical Safety


Princeton University

Dept. of Environmental Health & Safety

262 Alexander Street

Princeton, NJ 08544


609-258-7882 (voice)

609-258-1804 (fax)


EHS offers free alcohol-based and digital thermometers in exchange for your intact mercury thermometers.  258-5294

From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**LIST.UVM.EDU] On Behalf Of David Bunzow
Sent: Sunday, April 05, 2009 7:31 PM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: [DCHAS-L] Use of Vented Caps on Liquid Waste SAA Containers


In reviewing published accidental explosion descriptions involving either aqua regia or sulphuric acid + hydrogen peroxide, there appear to be several common (not terribly surprising) themes. These are:

[1] pressure build-up inside tightly capped glass containers from ongoing decomposition reactions, and;

[2] improper addition of aliphatic organics into these containers resulting in overpressure, explosion and sometimes fire.

My question of list participants and colleagues is their perspective/experience on using vented caps to prevent build-up on waste containers in SAAs. Specifically,

[A}  In your experience, is the use of vented caps a permitted practice under RCRA or your state EPA agency?

[B}  Does EPA or your state regulatory agency have either regulations or interpretations that define or interpret “container closure” as requiring it be tightly in place on the container as opposed to loosely in place to prevent pressure build-up?

BTW, I am in California but am interested in your response no matter where you are located.

TIA and make it a great day!!


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