PADI Enriched Air Diver
✅✅
How do you identify qualified enriched air blenders and enriched air service? -
-By looking for gas quality verification, proper procedures, cylinder
markings, analysis, record keeping and other documentation showing
evidence of training and certification.
How do you set your enriched air dive computer? - ✅✅ -Enter the "set"
mode. Scroll to the percentage of the blend you are using and lock it in.
✅✅
How do you use an EANx compatible dive computer to manage oxygen
exposure and remain within accepted limits? - -1) Set your dive
computer for a maximum oxygen partial pressure of 1.4..
2) Set your computer for the specific enriched air blend you're using for your
dive.
3) Activate the scroll mode that shows your no stop limits.
✅✅
How does exposure to increased oxygen partial pressure affect allowable dive
time? - -It decreases it.
How does using enriched air affect narcosis when diving? - ✅✅-The current
thinking is the narcosis potential is the same.
How does using enriched air affect no stop limits? - ✅✅-It allows longer no
stop limits because you are absorbing less oxygen.
What action should you take if a diver convulses underwater? - ✅✅-Treat it
as any unresponsive diver underwater.
✅✅
What action should you take of a diver is suspected of having decompression
illness after a dive using enriched air? - -The same as a diver suspected
of having DCI with regular air.
✅✅
What are the maximum and contingency oxygen partial pressure limits? -
-1.4 and 1.6 ata/bar
What are the procedures for analyzing enriched air? - ✅✅ -1) Turn on and
calibrate the analyzer.
2) Flow the enriched air through at the same rate you used for calibration.
3) Don't blow into the sensor.
, 4) Check your analyzer periodically against other analyzers and replace the
sensor when necessary.
5) If you ever question the accuracy of an analyzer, compare it against one or
more analyzers known to be accurate, and/or a gas of known analysis.
What are the requirements and recommendations for scuba equipment (other
✅✅
than cylinders) used with enriched air with up to 40 percent oxygen? -
-1) Regulators, BCDs, SPGs, and alternate air sources may be used
without modification.
2) Follow manufacturers recommendations.
3) Use oxygen compatible lubricants, o-rings, and other materials as
appropriate during service.
4) Have your regulator serviced annually, preferably by a technician qualified
to work on enriched air equipment. Have it inspected or recleaned by a
qualified technician if you accidentally expose it to anything other than water.
✅✅
What are the two most commonly used blends of enriched air? -
-EANx32 or NOAA Nitrox 1, and EANx36 or NOAA Nitrox 2.
✅✅
What are the two primary concerns associated with filling enriched air
cylinders, and how are they avoided? - -1) Fire/explosion hazard.
2) Percentage of oxygen in the blend.
Have only reputable, qualified enriched air blenders fill enriched air cylinders
for you.
✅✅
What are three advantages of using an enriched air dive computer for
enriched air diving? - -1) Computers combine enriched air with multilevel
diving for the most no stop time possible.
2) Most models will or can be set to alert you if you accidentally exceed the
maximum depth for your gas blend.
3) Dive computers simplify diving planning and execution by calculating both
your oxygen exposure and your allowable no stop time, and warn you if you
near the limits of either.
✅✅
What color coding, stickers (decals) and tags should an enriched air cylinder
have? - -1) Yellow cylinders should have a 4 inch green band with yellow
or white lettering.
2) Non-yellow cylinders should have a 6 inch band with 1 inch of yellow on the
top and bottom, green in the middle, and yellow or white lettering.
3) There should be a dated visual inspection sticker.
✅✅
How do you identify qualified enriched air blenders and enriched air service? -
-By looking for gas quality verification, proper procedures, cylinder
markings, analysis, record keeping and other documentation showing
evidence of training and certification.
How do you set your enriched air dive computer? - ✅✅ -Enter the "set"
mode. Scroll to the percentage of the blend you are using and lock it in.
✅✅
How do you use an EANx compatible dive computer to manage oxygen
exposure and remain within accepted limits? - -1) Set your dive
computer for a maximum oxygen partial pressure of 1.4..
2) Set your computer for the specific enriched air blend you're using for your
dive.
3) Activate the scroll mode that shows your no stop limits.
✅✅
How does exposure to increased oxygen partial pressure affect allowable dive
time? - -It decreases it.
How does using enriched air affect narcosis when diving? - ✅✅-The current
thinking is the narcosis potential is the same.
How does using enriched air affect no stop limits? - ✅✅-It allows longer no
stop limits because you are absorbing less oxygen.
What action should you take if a diver convulses underwater? - ✅✅-Treat it
as any unresponsive diver underwater.
✅✅
What action should you take of a diver is suspected of having decompression
illness after a dive using enriched air? - -The same as a diver suspected
of having DCI with regular air.
✅✅
What are the maximum and contingency oxygen partial pressure limits? -
-1.4 and 1.6 ata/bar
What are the procedures for analyzing enriched air? - ✅✅ -1) Turn on and
calibrate the analyzer.
2) Flow the enriched air through at the same rate you used for calibration.
3) Don't blow into the sensor.
, 4) Check your analyzer periodically against other analyzers and replace the
sensor when necessary.
5) If you ever question the accuracy of an analyzer, compare it against one or
more analyzers known to be accurate, and/or a gas of known analysis.
What are the requirements and recommendations for scuba equipment (other
✅✅
than cylinders) used with enriched air with up to 40 percent oxygen? -
-1) Regulators, BCDs, SPGs, and alternate air sources may be used
without modification.
2) Follow manufacturers recommendations.
3) Use oxygen compatible lubricants, o-rings, and other materials as
appropriate during service.
4) Have your regulator serviced annually, preferably by a technician qualified
to work on enriched air equipment. Have it inspected or recleaned by a
qualified technician if you accidentally expose it to anything other than water.
✅✅
What are the two most commonly used blends of enriched air? -
-EANx32 or NOAA Nitrox 1, and EANx36 or NOAA Nitrox 2.
✅✅
What are the two primary concerns associated with filling enriched air
cylinders, and how are they avoided? - -1) Fire/explosion hazard.
2) Percentage of oxygen in the blend.
Have only reputable, qualified enriched air blenders fill enriched air cylinders
for you.
✅✅
What are three advantages of using an enriched air dive computer for
enriched air diving? - -1) Computers combine enriched air with multilevel
diving for the most no stop time possible.
2) Most models will or can be set to alert you if you accidentally exceed the
maximum depth for your gas blend.
3) Dive computers simplify diving planning and execution by calculating both
your oxygen exposure and your allowable no stop time, and warn you if you
near the limits of either.
✅✅
What color coding, stickers (decals) and tags should an enriched air cylinder
have? - -1) Yellow cylinders should have a 4 inch green band with yellow
or white lettering.
2) Non-yellow cylinders should have a 6 inch band with 1 inch of yellow on the
top and bottom, green in the middle, and yellow or white lettering.
3) There should be a dated visual inspection sticker.
