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Date: Thu, 3 Aug 1995 22:39:59 -0500
To: Gavin_Bill@la*.nc*.na*.mi*
From: diveusa@ga*.ne* (Dave Schubert)
Subject: Rebreather experience
Cc: cavers@co*.ci*.uf*.ed*, techdiver@terra.net

>>A failure of the electronics in any rebreather can potentially cause a
>>hypoxic situation. If >>unnoticed by the diver (via alarms or indicators) he
>>will simply go to sleep. Quite peacefully >>(R.I.P.). We lost an EOD diver on
>>a MK 16 this way within the past month. Details are sketchy, >>but it would
>>appear a cable or connector failure caused the add valve to fail. The diver
>>>>apparently >>never noticed the alarm indication or noticed it too late.
>>This was a highly >>trained U.S. Navy >>diver using a UBA that has been in
>>service for more than a decade.<<

An active gas addition system (such as the MK16, CCR 155,  Oceanic, Prism,
and Atlantis I)would lend itself to hypoxic situations like you describe, a
passive system such as the LAR5 or Odyssey would not. The gas addition is
keyed to RMV.-Dave

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