PADI Enriched Air Diver questions with verified answers
How do you identify qualified enriched air blenders and enriched air service?
Ans✓✓✓ 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? Ans✓✓✓ 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? Ans✓✓✓ 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? Ans✓✓✓ It decreases it.
How does using enriched air affect narcosis when diving? Ans✓✓✓ The current
thinking is the narcosis potential is the same.
How does using enriched air affect no stop limits? Ans✓✓✓ It allows longer no
stop limits because you are absorbing less oxygen.
What action should you take if a diver convulses underwater? Ans✓✓✓ 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? Ans✓✓✓ The same as a diver suspected of
having DCI with regular air.
What are the maximum and contingency oxygen partial pressure limits?
Ans✓✓✓ 1.4 and 1.6 ata/bar
What are the procedures for analyzing enriched air? Ans✓✓✓ 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? Ans✓✓✓ 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.
How do you identify qualified enriched air blenders and enriched air service?
Ans✓✓✓ 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? Ans✓✓✓ 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? Ans✓✓✓ 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? Ans✓✓✓ It decreases it.
How does using enriched air affect narcosis when diving? Ans✓✓✓ The current
thinking is the narcosis potential is the same.
How does using enriched air affect no stop limits? Ans✓✓✓ It allows longer no
stop limits because you are absorbing less oxygen.
What action should you take if a diver convulses underwater? Ans✓✓✓ 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? Ans✓✓✓ The same as a diver suspected of
having DCI with regular air.
What are the maximum and contingency oxygen partial pressure limits?
Ans✓✓✓ 1.4 and 1.6 ata/bar
What are the procedures for analyzing enriched air? Ans✓✓✓ 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? Ans✓✓✓ 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.
