[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
RE: [PSUBS-MAILIST] Tympanic membranes
I recently wrote up a simple card listing reactions to all the various
emergencies I could think of. I believe pretty much every PSUB has a
drop weight and some sort of emergency breathing supply (Spare Air, a
SCUBA tank, built-in, etc.) But there's one element I kept falling back
on when writing those emergency processes that only a few PSUBS have,
and I would urge you all to consider it something indispensable. That's
an emergency buoy. PSUBS almost always operate in depths that can be
reached by a support diver, but to be of any use that diver must be able
to locate the sub.
Alec
The 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 Jon Wallace
Sent: Friday, August 07, 2009 9:44 AM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Tympanic membranes
I was headed down that path as well. The best defense is a good offense,
or follow ABS/PVHO rules and build it right and you won't have much to
worry about. If you design, build, and rate the sub correctly, and only
dive in water no deeper than the sub rating you should never have a
reason to bail from the sub. The Seaker100 accident (read the web site)
is factual evidence that the likelihood of surviving a catastrophic
failure is slim to none. That vessel failed in 30 feet of water
resulting in one dead and one critical who survived, but by his own
admission had no time to "react" and has no idea how he reached the
surface.
However, building true to ABS/PVHO specs won't guarantee you don't get
yourself into an entanglement situation. This seems to be a valid reason
to discuss escaping a sub and having some kind of plan for it. The video
clip of Alec hitting that underwater cable with snoopy is a perfect
example that there are underwater obstacles out there that can ruin your
day, even though it didn't ruin his. Had that cable gotten caught within
the claw arm on the front of Snoopy it would have been a far different
situation. I don't recall if that was a private dive or one that he made
at the 2006 convention, but we should look at that situation sometime in
the future and imagine the cable ensnared the sub, then discuss, "Ok now
what?"
Last year we started some discussions about equipment, parts, or
placement thereof that we might build on our subs as "standards" so in
case an entanglement situation arose an outside support team and/or
rescuers could understand how to get us additional air, locate lift
hooks, etc. We've let that discussion falter and should get back to it
since it represents an opportunity to deal with a situation without
forcing the occupant to escape. And lastly, directed to everyone, Jay
Jeffries has a lot of practical knowledge on issues surrounding sub
escape and has spent two consecutive conventions discussing the topic.
He should be listened to.
Jon
Greg Cottrell wrote:
>
> I also agree with Dan. No offense, but I think that it is very
> interesting that some folks would say that following the PVHO is "over
> kill" on safety and not necessary but then spend all their energy
> planning to escape from their sunken sub. An escape plan is a fine
> idea, but it would be nice to see more of that energy spent on safe
> building practices that are proven than "internet innovation with a
> great escape plan"
>
> Greg C
>
************************************************************************
************************************************************************
************************************************************************
The personal submersibles mailing list complies with the US Federal
CAN-SPAM Act of 2003. Your email address appears in our database
because either you, or someone you know, requested you receive messages
from our organization.
If you want to be removed from this mailing list simply click on the
link below or send a blank email message to:
removeme-personal_submersibles@psubs.org
Removal of your email address from this mailing list occurs by an
automated process and should be complete within five minutes of our
server receiving your request.
PSUBS.ORG
PO Box 53
Weare, NH 03281
603-529-1100
************************************************************************
************************************************************************
************************************************************************
************************************************************************
************************************************************************
************************************************************************
The personal submersibles mailing list complies with the US Federal
CAN-SPAM Act of 2003. Your email address appears in our database
because either you, or someone you know, requested you receive messages
from our organization.
If you want to be removed from this mailing list simply click on the
link below or send a blank email message to:
removeme-personal_submersibles@psubs.org
Removal of your email address from this mailing list occurs by an
automated process and should be complete within five minutes of
our server receiving your request.
PSUBS.ORG
PO Box 53
Weare, NH 03281
603-529-1100
************************************************************************
************************************************************************
************************************************************************