UOGML Dive Manual - University of Guam Marine Laboratory

Prior to authorization to use nitrox, the following minimum requirements should be met:
Training
The diver must complete additional theoretical and practical training beyond the Scientific
Diver In Training air certification level, to the satisfaction of the DOG Marine Laboratory
DSO and DeB.
Examinations
Each diver should demonstrate proficiency in skills and theory in written, oral, and practical
examinations covering:
a) Written examinations covering the information presented in the classroom training
session(s) (i.e., gas theory, oxygen toxicity, partial pressure determination, etc.);
b) Practical examinations covering the information presented in the practical training
session(s) (i.e., gas analysis, documentation procedures, etc.);
c) Openwater checkout dives, to appropriate depths, to demonstrate the application of
theoretical and practical skills learned.
Minimum Activity to Maintain Authorization
The diver should log at least one nitrox dive per year. Failure to meet the minimum activity
level may be cause for restriction or revocation of nitrox authorization.
8.3 Nitrox Training Guidelines
Training in these guidelines should be in addition to training for Diver-In-Training authorization
(Section 4.00). It may be included as part of training to satisfy the Scientific Diver training
requirements (Section 5.0).
8.3.1 Classroom Instruction
a) Topics should include, but are not limited to: review of previous training;
physical gas laws pertaining to nitrox; partial pressure calculations and limits;
equivalent air depth (EAD) concept and calculations; oxygen physiology and
oxygen toxicity; calculation of oxygen exposure and maximum safe operating
depth (MOD); determination of decompression schedules (both by EAD method
using approved air dive tables, and using approved nitrox dive tables); dive
planning and emergency procedures; mixing procedures and calculations; gas
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