From: davivid <davivid**At_Symbol_Here**WELL.COM>
Subject: Re: [DCHAS-L] Elevator Entrapment while Transporting a Liquid Nitrogen Dewar
Date: Fri, 11 May 2018 08:52:59 -0700
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: 9056becf-16f9-8890-f8e9-d53c5b189af7**At_Symbol_Here**well.com
In-Reply-To <671E8158DE91974CB435750BF546F746394D892F**At_Symbol_Here**CITESMBX2.ad.uillinois.edu>


Having the sign posted is critical, as the buddy system alone will not
prevent a naive person from stopping the elevator and entering between
points A and B.

Dave Lane
Principal
Clavis Technology Development

On 11/5/18 6:33 AM, Meschewski, Brian D wrote:
> Hi Martin,
>
> Our policy is to simply not travel in an elevator with liquid nitrogen. We tell personnel to place the container inside the elevator and place this sign on it facing the door: http://www.drs.illinois.edu/site-documents/LiquidNitrogenSignElevator.pdf. We include this information in our cryogen guidance document: https://www.drs.illinois.edu/SafetyLibrary/CryogensAndDryIce.
>
> Brian Meschewski
> Research Safety Professional
> Division of Research Safety
> University of Illinois at Urbana-Champaign
> (217)333-2423
> bmesche2**At_Symbol_Here**illinois.edu
>
> From: ACS Division of Chemical Health and Safety On Behalf Of Bell,Martin
> Sent: Friday, May 11, 2018 7:54 AM
> To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
> Subject: Re: [DCHAS-L] Elevator Entrapment while Transporting a Liquid Nitrogen Dewar
>
>
> Good morning,
>
> We recently had an incident where a researcher was momentarily trapped in an elevator while transporting a 230 liter Dewar of liquid nitrogen. Thankfully the researcher walked out of the elevator a few seconds later.
>
> This incident raised a concern about the potential for asphyxiation if an entrapment occurred and the Dewar released nitrogen gas into the elevator cab (unlikely but need to prepare). We have elevator rescue protocols in place but the response time depends on the time of day.
>
> Has anyone addressed this type of concern?
>
> Martin W. Bell, M.S. CIH CSP
> Director, Environmental Compliance
> Department of Environmental Health and Safety
>
> Drexel University
> 400 North 31st Street
> Philadelphia, PA 19104
> Tel: 215.895.5892 | Fax: 215.895.5926
> Mobile: 215-778-4278
> drexel.edu/facilities/healthsafety<https://urldefense.proofpoint.com/v2/url?u=http-3A__drexel.edu_facilities_healthsafety&d=DwMGaQ&c=OCIEmEwdEq_aNlsP4fF3gFqSN-E3mlr2t9JcDdfOZag&r=75YWIry4p1Fjbp8eCtoCCtvtxT998Ppts7jD7j2xO5g&m=bMwts_dQw5iI4xvBYA9yACPrINus6hF0qai4RA2dmYQ&s=shy27g_vEufn9-sfiHKZTEOnKA8abApIVHGS4ihQUA4&e=>
>
>
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