ENRICHED AIR NITROX TEST PAPER QUESTIONS
AND ANSWERS SURE A+
✔✔The smallest ppO2 value on the SSI CNS Clock Exposure Time Table is 0.6. A
conservative approach to tracking oxygen exposure is to treat dives with a ppO2 of 0.5
and less as? - ✔✔If they are equal to 0.6.
✔✔What does ppO2 mean? - ✔✔Partial pressure of oxygen
✔✔How is the ppO2 of a breathing gas calculated? - ✔✔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: - ✔✔A Maximum Operating
Depth (MOD), based on a limiting ppO2 of 1.4 bar or less.
✔✔O2-cleaned and O2-service rated cylinders will maintain their rating if they are only
filled with: - ✔✔Oxygen-compatible gas
✔✔The fraction of oxygen (FO2) value on the cylinder contents tag accurately reflects
the contents of the nitrox cylinder if: - ✔✔You personally analyze the cylinder's FO2
content or witness the analysis
✔✔Which special skills are required before you dive with nitrox? - ✔✔Correct analysis
of cylinder content in the field and at the blending station
✔✔The major benefit of diving with nitrox is that it has a lower concentration of _____,
which limits our time at depth. - ✔✔Nitrogen
✔✔Two factors determine your total oxygen "dose." These factors are: - ✔✔The ppO2
at depth AND the length of the exposure
AND ANSWERS SURE A+
✔✔The smallest ppO2 value on the SSI CNS Clock Exposure Time Table is 0.6. A
conservative approach to tracking oxygen exposure is to treat dives with a ppO2 of 0.5
and less as? - ✔✔If they are equal to 0.6.
✔✔What does ppO2 mean? - ✔✔Partial pressure of oxygen
✔✔How is the ppO2 of a breathing gas calculated? - ✔✔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: - ✔✔A Maximum Operating
Depth (MOD), based on a limiting ppO2 of 1.4 bar or less.
✔✔O2-cleaned and O2-service rated cylinders will maintain their rating if they are only
filled with: - ✔✔Oxygen-compatible gas
✔✔The fraction of oxygen (FO2) value on the cylinder contents tag accurately reflects
the contents of the nitrox cylinder if: - ✔✔You personally analyze the cylinder's FO2
content or witness the analysis
✔✔Which special skills are required before you dive with nitrox? - ✔✔Correct analysis
of cylinder content in the field and at the blending station
✔✔The major benefit of diving with nitrox is that it has a lower concentration of _____,
which limits our time at depth. - ✔✔Nitrogen
✔✔Two factors determine your total oxygen "dose." These factors are: - ✔✔The ppO2
at depth AND the length of the exposure
