WATER VAPOUR CONTENT AND ITS EFFECT ON CABA REGULATOR FREEZE-UP

Authors
  1. Eaton, D.J.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
During the winter months the Canadian Forces (CF) have experienced problems with high water content levels in divers' compressed breathing gases. One problem investigated was the validity of the standard used to specify water content levels. The standard suggests that water is a contaminant in the compressed gas because it might cause freezing of the breathing apparatus regulators. Present thinking disagrees with this suggestion; consequently, an experiment was performed in which 4 diving regulators used by the Canadian Forces were tested in -1.0 to 0.0C salt water. Therefore, it was recommended that the CF standard be revised to remove water vapour as a cause of compressed air breathing apparatus regulator freeze-up. The recommended maximum level for moisture content in compressed air breathing apparatus air supplies was 50 mL/cubic m by volume based on the standards used by other NATO forces.
Report Number
DCIEM-90-R-29 — Technical Report
Date of publication
15 Jul 1990
Number of Pages
14
DSTKIM No
90-04801
CANDIS No
67031
Format(s):
Hardcopy;Originator's fiche received by DSIS

Permanent link

Document 1 of 1

Date modified: