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Related Experiment Videos

Escape from a disabled submarine: decompression sickness risk estimation.

E C Parker1, R Ball, P M Tibbles

  • 1Naval Medical Research Institute, Bethesda, MD, USA.

Aviation, Space, and Environmental Medicine
|February 24, 2000
PubMed
Summary
This summary is machine-generated.

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Navy submarine escape carries decompression sickness (DCS) risks, particularly at greater depths and higher internal pressures. However, likely escape scenarios present risks comparable to routine diving.

Area of Science:

  • Naval Medicine
  • Hyperbaric Physiology
  • Risk Assessment

Background:

  • Individual crew escape from disabled U.S. Navy nuclear submarines is a critical, though historically unutilized, contingency.
  • Decompression sickness (DCS) is a primary health risk associated with submarine escape.

Purpose of the Study:

  • To estimate the magnitude of DCS risk under various submarine escape scenarios using a mathematical model.
  • To evaluate the impact of different escape conditions on DCS incidence.

Main Methods:

  • A robust mathematical model of DCS incidence was employed.
  • The model was calibrated using data from over 3000 human pressure exposures.
  • A subset of exposures simulated submarine escape pressure profiles.

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Main Results:

  • At depths less than 300 fsw and internal pressures below 11 fsw, DCS risk is estimated to be less than 5%, similar to routine U.S. Navy diving.
  • Increased depths and higher internal submarine pressures significantly elevate DCS risk, with potential for permanent injury or death.

Conclusions:

  • The mathematical model provides valuable insights into DCS risks during submarine escape.
  • Likely escape scenarios pose manageable DCS risks, but extreme conditions necessitate extreme caution and procedural review.