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SSI Enriched Air Nitrox Exam 2023
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SSI Enriched Air Nitrox Exam 2023
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SSI Enriched Air Nitrox Exam 2023Which kind of warnings should you observe and adhere to while diving with a dive computer ? - Answer- Ascent rates Decompression limits Oxygen / Nitrogen exposure all answers are correct
If you experience a computer failure underwater , you should : - Answer- Do not enter the water again for at least 24 hours and watch for signs of decompression sickness Signal your buddy , and ascend with them while they monitor your ascent on their computer As an added precaution , perform a longer than normal safety stop if breathing gas supply permits All answers are correct
Which of the following is a significant difference between planning a dive on nitrox and planning a dive using air ? - Answer- You must also manage your exposure to oxygen
Which special skills are required to dive with nitrox ? - Answer- None
The risk of CNS oxygen toxicity becomes more substantial above : - Answer- A ppO2 of
1.6 bar
A common misconception is , that compared to air , Nitrox enables Divers to dive : - Answer- deeper
How is the ppO2 of a breathing gas calculated ? - Answer- Multiplying ambient pressure
by the fraction of oxygen ( FO2 ) in the breathing gas
The single most important aspect of managing your exposure to oxygen is , controlling the intensity of that exposure by determining : - Answer- A Maximum Operating Depth ( MOD ) , based on a limiting pp02 of 1.4 bar or less .
According to the SSI CNS Clock table you have two different CNS Clock limits . One for a single dive , and one for a 24 hr period . These limits are for an ppO2 of 1.4 bar : - Answer- 150 mins single dive / 180 mins 24 hrs
What does pp02 mean ? - Answer- Partial pressure of oxygen
Which special skills are required before you dive with nitrox ? - Answer- Correct analysis of cylinder content in the field and at the blending station
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