Second Preliminary Report on Nitrogen Oxygen Self-Contained Underwater Breathing Apparatus
Abstract
The report covers an additional investigation into the characteristics and potentialities of the nitrogen-oxygen self-contained underwater breathing apparatus when used under swimming conditions or for extremely heavy work. The original investigation drew the general conclusion that the apparatus is satisfactory as a diving outfit. This evaluation reveals the limitation which develops when the apparatus is used for swimming or heavy work at surface conditions: the unit can produce anoxia. As a result of this limitation, the following guides to use of the unit must be followed: Use straight oxygen in both bottles for swimming oy diving at depths down to 30 feet; if using the air-oxygen mixture for light diving down to 30 feet, purge the bag completely after every five minutes of unforeseen, sustained, heavy physical exertion; use the air-oxygen mixture for swimming or diving at depths greater than 30 feet, and purge the bag completely before starting to the surface.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1951
- Accession Number
- AD0778813
Entities
People
- J. V. Dwyer
Organizations
- United States Navy Experimental Diving Unit