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[Saturation diving system at high altitude]

M Shibayama1, N Yamami, A M Sera

  • 1Komazawa Women's University.

The Annals of Physiological Anthropology = Seiri Jinruigaku Kenkyukai Kaishi
|November 1, 1994
PubMed
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High-altitude saturation diving was successfully conducted in Japan for hydroelectric dam maintenance. These operations involved divers breathing Heliox at depths up to 78m, demonstrating the feasibility of underwater work at extreme elevations.

Area of Science:

  • Physiological and environmental challenges of extreme depth diving.
  • High-altitude underwater engineering and operations.

Context:

  • First high-altitude saturation diving operations in Japan began in 1987.
  • Multiple saturation dives were performed between 1987 and 1993 for hydroelectric dam maintenance at 850m above sea level.

Purpose:

  • To perform maintenance on a hydroelectric dam pipeline at high altitude.
  • To assess the feasibility and safety of saturation diving operations at high altitudes.

Summary:

  • Saturation dives were conducted at depths ranging from 53-78m using Heliox breathing gas.
  • Divers utilized heated suits and were monitored by a remotely operated vehicle (ROV).
  • Operations lasted between 6-13 days, involving 3 divers per mission, with successful outcomes.

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Impact:

  • Demonstrated successful application of saturation diving techniques in high-altitude environments.
  • Provided practical data on physiological conditions and operational parameters for extreme depth diving.
  • Established a precedent for complex underwater engineering tasks at significant elevations.