MK 12 Surface Supplied Diving System Helium-Oxygen Emergency Mode Study

Abstract

This experiment tested the duration that respirable gas would be available in the MK 12 helmet when gas supply from the umblical has been stopped. The emergency mode semi-closed recirculator operation was tested in 40 F (4.5 C) water in a wet chamber at depths of 390 and 80 FSW. The duration of reasonable life support was considered to be the time between shut-off of the umbilical supplied mixed-gas and the time when the helmet gas reached 3% SEV. The results indicate that approximately 8 min of adequate life support are available in the emergency mode.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1979
Accession Number
ADA079136

Entities

People

  • E. D. Thalmann
  • R. C. Maulbeck
  • W. H. Spaur

Organizations

  • United States Navy Experimental Diving Unit

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Assembly
  • Ball Valves
  • Breathing Apparatus
  • Carbon Dioxide
  • Divers
  • Diving
  • Emergencies
  • Exhaust Valves
  • Flow Rate
  • Gas Turbine Nozzles
  • Gases
  • High Pressure
  • Hot Water
  • Partial Pressure
  • Pressure Regulators
  • Valves
  • Water

Fields of Study

  • Physics

Readers

  • Materials Science
  • Toxicology/Environmental Toxicology