CURRENT DEVELOPMENTS IN CANADA REGARDING NITROX AND SEMI-CLOSED DIVING SYSTEMS (paper presented at the Workshop on Enriched Air Nitrox Diving September 1989)

Authors
  1. Nishi, R.Y.
  2. Eaton, D.J.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
The Canadian Clearance Diving Apparatus is a semi-closed circuit breathing apparatus in use by the Canadian Forces. This apparatus and its commercial version are designed for use to 55 metres of seawater using premixed gases. The decompression requirements for semi-closed circuit systems are generally determined from the Standard Air Tables using the equivalent air depth, and these procedures have been shown to be reliable. There are advantages and disadvantages of developing specific decompression tables based on the actual oxygen content in the counterlung. Such tables can lead to shorter decompression times and increased no-decompression capability, but they lead also to increased complexity and some uncertainty because of changing oxygen level.
Report Number
DCIEM-88-TR-07 — Technical Report; Reprint
Date of publication
01 Jan 1988
Number of Pages
10
DSTKIM No
90-01119
CANDIS No
63390
Format(s):
Hardcopy;Originator's fiche received by DSIS

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