SSI Enriched Air Nitrox Exam Latest Update
2025-2026 Actual Exam Questions with 100%
Verified Correct Answers Guaranteed A+ Verified
by Professor
02 - cleaned and 02 - service rated cylinders will maintain their rating if they are only
filled with : - CORRECT ANSWER: Oxygen - compatible gas
A common misconception is , that compared to air , Nitrox enables Divers to dive : -
CORRECT ANSWER: deeper
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 : -
CORRECT ANSWER: 150 mins single dive / 180 mins 24 hrs
How is the ppO2 of a breathing gas calculated ? - CORRECT ANSWER: Multiplying
ambient pressure by the fraction of oxygen ( FO2 ) in the breathing gas
If scuba equipment , valves and cylinders are exposed to pure oxygen , they have to be
- CORRECT ANSWER: 02 clean and O2 service rated
If you experience a computer failure underwater , you should : - CORRECT 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
2025-2026 Actual Exam Questions with 100%
Verified Correct Answers Guaranteed A+ Verified
by Professor
02 - cleaned and 02 - service rated cylinders will maintain their rating if they are only
filled with : - CORRECT ANSWER: Oxygen - compatible gas
A common misconception is , that compared to air , Nitrox enables Divers to dive : -
CORRECT ANSWER: deeper
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 : -
CORRECT ANSWER: 150 mins single dive / 180 mins 24 hrs
How is the ppO2 of a breathing gas calculated ? - CORRECT ANSWER: Multiplying
ambient pressure by the fraction of oxygen ( FO2 ) in the breathing gas
If scuba equipment , valves and cylinders are exposed to pure oxygen , they have to be
- CORRECT ANSWER: 02 clean and O2 service rated
If you experience a computer failure underwater , you should : - CORRECT 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
