SDI Computer Nitrox Diver Chp. 4 Quiz
True or False:
Because oxygen-rich gas mixtures cause greater heat loss than air does, you may need
additional thermal protection for Nitrox diving. - ANSWER-False
True or False:
Because they come in contact with Nitrox only at very low pressures, BCs and dry suit
valves do not need to be cleaned for oxygen service. - ANSWER-True
True or False:
The pressure of a Nitrox tank wrap signifies a cylinder that has been pre-filled with
EAN32. - ANSWER-False
True or False:
The two most important pieces of information that will appear on a Nitrox fill tag or label
are FO2 or MOD. - ANSWER-True
What are the changes that must be made to a regulator to prepare it for use with Nitrox
mixtures whose FO2 does not exceed 40 percent?
Must be O2 clean
Must undergo CGA certification
All neoprene O-rings must be replaced with oxygen-compatible material
None of the above - ANSWER-None of the above
What are the changes that must be made to a regulator to prepare it for use with Nitrox
mixtures whose FO2 does not exceed 40 percent? - ANSWER-No changes are needed,
unless required by manufacturer's specifications or local laws/regulations
What are the two most important pieces of information that will appear on a Nitrox fill tag
or label? - ANSWER-FO2 and MOD
What are two equipment items that do not need to be cleaned for oxygen service? -
ANSWER-Bfs and dry suit valves
What is an Oxygen Analyzer? - ANSWER-An electronic device used to measure. the
percentage of oxygen in a gas mixture.
What is the most important setting that must be made to your Nitrox computer before
every dive? - ANSWER-FO2
Which of the following best describes a Nitrox tank wrap? - ANSWER-All of the above:
A large decal that instantly identifies cylinders which may contain nitrox, A tank-
