Nitrox Knowledge Review

1 State the primary benefit realized when diving Nitrox
2 State the primary risk to consider when diving Nitrox.
3 State the O2% and Maximum Operating Depth for N1 and N2.
4 State the Oxygen content tolerance for Nitrox I and Nitrox II.
5 Describe the signs and symptoms of CNS Oxygen toxicity.
6 State the maximum partial pressure of Oxygen, in AtA, for recreational diving.
7 State the maximum partial pressure of Oxygen, in AtA, for prolonged, or strenuous, or cold water dives.
8 Describe the relationship between the partial pressure of Oxygen and time as they relate to CNS Oxygen toxicity.
9 Using the NOAA MOD Table, what is the Maximum Operating Depth for a mix that measures 38.4 % Oxygen?
10 A diver plans a prolonged and strenuous dive using EANx36. What is the proper maximum depth for this dive?
11 A diver plans to do two 60 foot dives. Given 50 minutes bottom time on the first dive and a 30 minute surface interval, what is the maximum time that can be spent on the second dive when using the PADI air tables. Note: If other tables are used, state the source of the tables e.g. NAUI air tables, US Navy air tables etc.
12 Calculate the pressure in Atmospheres Absolute for a dive to a depth of 90 Feet of Sea Water.
13 Calculate the depth in Feet of Sea Water that will result in a pressure of 3.5 Atmospheres Absolute.
14 Calculate the partial pressure of Oxygen when diving a 40 % Nitrox mix at a depth of 60 feet.
15 Calculate the maximum operating depth for an 37 % Nitrox mix.
16 Calculate the best Nitrox mix for a 150 foot dive assuming the bottom time will not exceed 45 minutes.
17 Calculate the equivalent air depth for a dive to 62 feet using a 40% Nitrox mix?
18 State the maximum O2% for equipment not requiring Nitrox preparation.
19 Describe three ways of making Nitrox.
20 Describe the only way to be certain of the O2 % in the scuba cylinder.
21 State the four items that should be recorded on the tank contents label.
22 Describe the signs and symptoms of decompression sickness.
23 Describe the first aid treatment for decompression sickness.
24 Describe the hospital treatment for decompression sickness.

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