...I think it's a high likelihood to be that particular incident. The only other single fatality of a two-man crew that I heard of, was the Nekton accident Vance referred to some time ago. But, that was a commercial op I assume.
The section on failure modes in "Concepts in Submarine Design", convinced me that I no longer need worry about the hull material (shell) proper. Failure would come from a weld or penetration.
Anyone know what's required in the "welder qualification test" mentioned by Dan? One pass at 100%?...ten?....fifty?
Joe
From: "Smyth, Alec" <Alec.Smyth@compuware.com> Reply-To: personal_submersibles@psubs.org To: <personal_submersibles@psubs.org> Subject: RE: [PSUBS-MAILIST] Welding Revisited Date: Wed, 25 Jul 2007 12:03:15 -0400 He didn't mention the name but he did say it had been a viewport failure, so I assumed he was referring to the Speaker. thanks, AlecThe contents of this e-mail are intended for the named addressee only. It contains information that may be confidential. Unless you are the named addressee or an authorized designee, you may not copy or use it, or disclose it to anyone else. If you received it in error please notify us immediately and then destroy it.From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Paul Kreemer Sent: Wednesday, July 25, 2007 11:09 AM To: personal_submersibles@psubs.org Subject: Re: [PSUBS-MAILIST] Welding Revisited Alec, did you learn any more detail on that accident? When, where, what sub design? And what the failure was? On 7/25/07, Smyth, Alec < Alec.Smyth@compuware.com <mailto:Alec.Smyth@compuware.com> > wrote: ... He commented that his only interaction with personal submersibles was as an expert witness in a lawsuit. The lawsuit had come about because someone built a sub designed to go to many hundreds of feet, but it failed at only 30 feet and one of the two crew died.
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