Accession Number:

ADA383688

Title:

1.3 ATA PO2 N2-O2 Decompression Table Validation

Descriptive Note:

Technical rept. Feb-Jun 2000

Corporate Author:

NAVY EXPERIMENTAL DIVING UNIT PANAMA CITY FL

Report Date:

2000-09-01

Pagination or Media Count:

98.0

Abstract:

Results of a successful human validation trial of 1.3 atmosphere ATA PO2-in-nitrogen PO2-in-N2 decompression profiles for use with the MK 16 MOD 1 Underwater Breathing Apparatus UBA are presented. Twelve 12 dive profiles involving repetitive dives, decompression dives, and repetitive decompression dives ranging in depth from 80 to 190 feet of seawater fsw were tested a total of 325 times. Three cases of decompression sickness occurred in the first portion of the trial, when schedules computed assuming that the diver breathes 1.3 ATA PO2-in-N2 at depths greater than 33 fsw were tested. Schedules tested in the last portion of the trial were calculated under the assumption that the diver breathes 1.25 ATA PO2-in-N2 at depths deeper than 33 fsw. No additional cases of DCS occurred with these schedules. Diver inspired PO2 was measured and used to estimate the risk of central nervous system CNS toxicity for 199 of the dives. Decompression tables for use with the MK 16 MOD 1 with air diluent are presented, with recommendations to reduce risk of oxygen toxicity

Subject Categories:

  • Stress Physiology
  • Life Support Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE