PADI ENRICHED AIR DIVER EXAM
REVIEW QUESTIONS AND ANSWERS
What is the primary benefit of diving with enriched air? - Answer-it exposes you to less
nitrogen and let's you dive longer
What is enriched air? - Answer-Enriched air is any nitrogen/oxygen gas blend with more
than 21% oxygen.
Enriched air ____________ the no stop limits compared to air - Answer-Extends
when diving with enriched air nitro, for a given depth you should expect narcosis to be
_______________ compared to diving with air. - Answer-the same as
True or false: it is to simplistic to say enriched air is safer than air when well within air no
stop limits because enriched air creates an oxygen hazard and the DCI rate is already
very low and recreational air diving. - Answer-True
Advantaged of using a dive computer with enriched air nitro include that.... - Answer-it
adds multilevel diving advantages for the longest no stop dive time, most models will
warn you if you exceed the maximum depth for your gas blend, and simplifies dive
planning
The general recommendation for scuba equipment (other than your cylinder) used with
enriched air is... - Answer-everything can be used normally just as it is with air up unless
using a blend of more than 40% O2
True or false: Some SCUBA manufacturers have special recommendations or
requirements that you should follow when using their equipment with enriched air nitrox.
- Answer-True
The primary concern regarding enriched air in scuba equipment is - Answer-Contact
with high oxygen content may cause fire, explosion, or deterioration
Based on broadly accepted international dive community practices, enriched air
cylinders, should have the following: - Answer-Yellow cylinders should have a green
band at the shoulder with enriched air or similar designation, the cylinder should have a
standard visual inspection sticker, the cylinder should have a contents sticker, and the
cylinder should have a sticker to indicate whether it's oxygen service rated.
Nitro requires a dedicated cylinder because... - Answer-it's important no one
accidentally confuse it with an air cylinder - it can be hazardous to unknowingly dive
with enriched air, and it can be hazardous to blend enriched air in a conventional air
cylinder
REVIEW QUESTIONS AND ANSWERS
What is the primary benefit of diving with enriched air? - Answer-it exposes you to less
nitrogen and let's you dive longer
What is enriched air? - Answer-Enriched air is any nitrogen/oxygen gas blend with more
than 21% oxygen.
Enriched air ____________ the no stop limits compared to air - Answer-Extends
when diving with enriched air nitro, for a given depth you should expect narcosis to be
_______________ compared to diving with air. - Answer-the same as
True or false: it is to simplistic to say enriched air is safer than air when well within air no
stop limits because enriched air creates an oxygen hazard and the DCI rate is already
very low and recreational air diving. - Answer-True
Advantaged of using a dive computer with enriched air nitro include that.... - Answer-it
adds multilevel diving advantages for the longest no stop dive time, most models will
warn you if you exceed the maximum depth for your gas blend, and simplifies dive
planning
The general recommendation for scuba equipment (other than your cylinder) used with
enriched air is... - Answer-everything can be used normally just as it is with air up unless
using a blend of more than 40% O2
True or false: Some SCUBA manufacturers have special recommendations or
requirements that you should follow when using their equipment with enriched air nitrox.
- Answer-True
The primary concern regarding enriched air in scuba equipment is - Answer-Contact
with high oxygen content may cause fire, explosion, or deterioration
Based on broadly accepted international dive community practices, enriched air
cylinders, should have the following: - Answer-Yellow cylinders should have a green
band at the shoulder with enriched air or similar designation, the cylinder should have a
standard visual inspection sticker, the cylinder should have a contents sticker, and the
cylinder should have a sticker to indicate whether it's oxygen service rated.
Nitro requires a dedicated cylinder because... - Answer-it's important no one
accidentally confuse it with an air cylinder - it can be hazardous to unknowingly dive
with enriched air, and it can be hazardous to blend enriched air in a conventional air
cylinder
