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From: J Shepherd <jms@fe*.ed*.ac*.uk*>
Subject: Re: Double Talk (i.e. equipment redundancy)
To: techdiver@terra.net
Date: Thu, 4 Jan 96 11:35:23 GMT
	Swapping dry kit sounds like a very pleasant use of an afternoon
Terho! You must be nuts (in the nicest possible way).

	I only know of three (four?) failures of kit that fall in this
league, and we may learn from them...

	i) a diver slashed his suit inside a wreck, near the groin. One
leg filled with water immediately, and after a while began to trickle in
to the other one. His undersuit retained some air in both legs, though,
and he surfaced without buoyancy problems, just very cold.

	ii) (incident report) a diver entered the water without a BC,
and his zip failed at 15m. He swam back to the surface 'with some
difficulty'.

	iii)+iv) both friends of mine... :-) entered the water with
their zips open. Both got to the surface without difficulty, but exiting
was hard.

	I think that to fill the suit as badly as your test you would
have to seriously damage it; although a catastrophic zip failure (end to
end) of a shoulder zip might do it.

	I have to admit, the redundancies that so enamour the techies
are one of the big reasons I larf at 'em so...

	Jason

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