About This Archive | DCHAS-L 2019 Index | DCHAS-L Yearly Index | DCHAS-L Home Page
From: Eugene Ngai <eugene_ngai**At_Symbol_Here**COMCAST.NET>
Subject: Re: [DCHAS-L] New Article
Date: Aug 13, 2019 17:38 UTC
Reply-To:
ACS Division of Chemical Health and Safety
In-Reply-To: Re: [DCHAS-L] New Article
Neal
Please go to this NFPA article. Some chambers operate at 3 atm to treat wounds or other illnesses.
https://www.nfpa.org/News-and-Research/Publications-and-media/NFPA-Journal/2017/January-February-2017/Features/Hyperbaric-chambers
People have ignited themselves because they wore synthetic clothing that created a static discharge. There was also a tragic case of a horse being treated for a leg injury and the chamber blowing they theorize was due to a spark from the horseshoe.
WHA International in New Mexico conducted a lot of the forensic testing for the U of Hawaii explosion. Dr. Barry Newton, President and many of his associates worked for NASA, White Sands on oxygen compatibility. When I was there he had a number of hyperbaric chambers that he was testing for these types of failures.
Eugene
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU> On Behalf Of NEAL LANGERMAN
Sent: Tuesday, August 13, 2019 11:21 AM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: Re: [DCHAS-L] New Article
Eugene
All the medical hyperbaric chambers I have seen do operate at 1 ATA, but 60 - 100% O2 is delivered to the PT via tight-fitting face mask and exhausted overboard. All the chambers have O2 sensors and procedures for increasing air flow through rates if the O2 concentration exceeds a set-point, usually 24%.
Neal