PADI Enriched Air Diver Complete Study Guide Test.
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PADI Enriched Air Diver Complete Study Guide Test.
What is "enriched air"? - CORRECT ANSWER Enriched air is any nitrogen/oxygen gas blend with more than 21% oxygen.
What is the primary benefit of using enriched air? - CORRECT ANSWER It exposes you to less nitrogen than when you dive with air....
PADI Enriched Air Diver Complete Study
Guide Test.
What is "enriched air"? - CORRECT ANSWER Enriched air is any nitrogen/oxygen gas blend with more
than 21% oxygen.
What is the primary benefit of using enriched air? - CORRECT ANSWER It exposes you to less nitrogen
than when you dive with air.
How does using enriched air affect no stop limits? - CORRECT ANSWER It allows longer no stop limits
because you are absorbing less oxygen.
Why is it too simplistic to say enriched air is safer than air when diving will within air no decompression
limits? - CORRECT ANSWER Higher oxygen levels create a potential hazard that hardly exists in air diving
within recreational limits.
How does using enriched air affect narcosis when diving? - CORRECT ANSWER The current thinking is the
narcosis potential is the same.
What are three advantages of using an enriched air dive computer for enriched air diving? - CORRECT
ANSWER 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 is the primary concern regarding enriched air and scuba equipment? - CORRECT ANSWER High
oxygen content.
What are the requirements and recommendations for scuba equipment (other than cylinders) used with
enriched air with up to 40 percent oxygen? - CORRECT ANSWER 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.
Why does enriched air diving require a dedicated cylinder? - CORRECT ANSWER 1) It is important that no
one accidentally confuse an enriched air cylinder for one of normal air.
2) If partial pressure blending with oxygen will be used, the cylinder must meet oxygen service
standards.
What color coding, stickers (decals) and tags should an enriched air cylinder have? - CORRECT ANSWER
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.
4) There should be a sticker stating whether or not it meet oxygen service standards.
5) There should be a contents sticker or permanent tag that should , at a minimum, list the oxygen
content, the fill date, the maximum depth for the blend, and the name of the person who analyzed the
oxygen content to verify the blender's analysis.
What are the two primary concerns associated with filling enriched air cylinders, and how are they
avoided? - CORRECT ANSWER 1) Fire/explosion hazard.
2) Percentage of oxygen in the blend.
Have only reputable, qualified enriched air blenders fill enriched air cylinders for you.
Why should only qualified, reputable enriched air blenders fill enriched air cylinders? - CORRECT
ANSWER They have the proper training and equipment to manage the two primary concerns associated
with enriched air cylinders.
What is the potential hazard of improper enriched air filling procedures? - CORRECT ANSWER
Fire/explosion and having a different mix of oxygen than you asked for.
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