Enriched Air Quick Review

PADI Enriched Air Diver Course

Quick Review — Product No. 435DT

Directions: Choose the best answer from the choices provided.

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1. If you begin to near an oxygen limit or a no decompression limit displayed on your computer, you should

a. ascend until your computer displays a longer limit and stay that shallow or shallower.

b. rapidly ascend and abort the dive.

c. keep a close eye on your computer and be sure you ascend exactly at the limit.

d. None of the above.

2. The maximum oxygen partial pressure limit is _______ ata/bar.

3. The primary hazard of exceeding oxygen exposure limits is drowning due to central nervous system (CNS) oxygen toxicity.

a. True

b. False

4. If you experience any symptoms of oxygen toxicity you should

a. ascend until you feel better.

b. shorten the dive by ten minutes.

c. make a rapid (30 metres/100 feet per minute or faster) ascent.

d. end the dive immediately by making a normal ascent.

5. You do not dive an enriched air cylinder unless you have personally verified the analysis of its contents.

a. True

b. False

6. Guidelines to apply when diving with an enriched air computer include

a. staying well within computer limits.

b. using the maximum depth warning as a secondary alert.

c. that each diver needs an individual dive computer.

d. All of the above.

7. If a diver convulses underwater, you should

a. hold the regulator in the mouth if it is there.

b. get the diver to the surface and check for breathing.

c. get the diver to the boat or shore as quickly as possible.

d. All of the above.

8. By using your computer's scroll mode or other display, or with the table in the PADI Enriched Air Diver Manual, you should determine and note

a. the amount of oxygen in the blend.

b. the no stop limit for 40 metres/130 feet.

c. the deepest depth you can reach without exceeding 1.4.

d. All of the above.

9. Warning signs and symptoms of a CNS convulsion, if they occur, may include

a. visual disturbances.

b. limb and joint pain.

c. heart burn.

d. All of the above.

10. The primary concerns of filling an enriched air cylinder are fire/explosion hazard and

a. percentage of oxygen in the blend.

b. adjusting the maximum depth.

c. finding proper equipment for analysis.

d. transporting the cylinder to the dive site.

Student Statement: "Any questions I answered incorrectly I've had explained to me and I understand what I missed."