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PADI ENRICHED AIR DIVER EXAM|| ACTUAL
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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% O
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 in what areas would you expect enriched air cylinder to have a green or green/yellow band on shoulder with "nitro" or similar written on it? - ANSWER: in most areas internationally, but some regions use different markings if an enriched air cylinder or oxygen service rated equipment is used with standard compressed air, you.... - ANSWER: should have it serviced by an enriched air qualified professional In looking for qualified enriched air service, look for________ - ANSWER: Gas quality verification, proper enriched air procedures, and blender certification such as Tex gas blender.
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% O 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 in what areas would you expect enriched air cylinder to have a green or green/yellow band on shoulder with "nitro" or similar written on it? - ANSWER: in most areas internationally, but some regions use different markings
if an enriched air cylinder or oxygen service rated equipment is used with standard compressed air, you.... - ANSWER: should have it serviced by an enriched air qualified professional In looking for qualified enriched air service, look for________ - ANSWER: Gas quality verification, proper enriched air procedures, and blender certification such as Tex gas blender. The two most common blends of enriched air are: - ANSWER: EANx32 and EANx what is Oxygen partial pressure (PO2)? - ANSWER: It is used to measure the concentration of oxygen a diver is exposed to, expresses the part of a gas pressure exerted by the oxygen in the gas, is usually expressed in atmospheres or bar, and will vary at a given depth depending upon the oxygen percent. Exposure to increased oxygen partial pressure can make your allowable dive time ______________ - ANSWER: Shorter. Diving with enriched air, usually gives you longer dive times, due to reduce nitrogen, but at times oxygen exposure can limit your dive time. The maximum and contingency oxygen partial pressure limit is _______ ata/bar - ANSWER: 1. For the most common blends of enriched air, what are the maximum depths in get it before exceeding 1.4 ata? - ANSWER: 32% - 111 ft 36% - 95 ft
True or False: Although you personally verify the oxygen analysis of an enriched air cylinder's contents, doing so is not necessary if the person who performed the initial analysis is a qualified enriched air blender. - ANSWER: False; you still need to take responsibility of your safety and always double check everything. True or false: The first step in analyzing enriched air is to calibrate the oxygen analyzer - ANSWER: True The standard of practice for accuracy of enriched air analysis is plus or minus - ANSWER: 1% After Analyzing enriched air, you should compare your analysis with... - ANSWER: the oxygen percent on the cylinder contents sticker or tag Guidelines to apply when diving with an enriched air computer include.... - ANSWER: staying well within computer's no stop and O2 exposure limits, knowing the blend's max depth and using the maximum depth warning on the computer as a secondary alert, and making safety stops and following all conservative dive practices ? If you begin to near an oxygen limit or a no decompression limit displayed on your computer, you should... - ANSWER: ascend until your computer displays a longer limit and stay that shallow or shallower? True or False: If after diving with enriched air, you forget to set your computer with the enriched air blend and make a repetitive dive, some models will default to an error mode, whereas other models will stay set for the previous enriched air blend. - ANSWER: False- the computer will enter an error mode and you may have to wait 12 hours before you use it again.
True or false: you say moose in Riched air computers by letting the computer automatically analyze the blend you're using - ANSWER: False. Computers do not analyze your gas blend. Do you have to set the computer based on your analysis. If your enriched air computer fails during a dive, you should.... - ANSWER: immediately ascend to 5m/15ft, make a safety stop and end the dive If a diver convulses underwater, you should.... - ANSWER: hold the regulator in the mouth if it is there, get the diver to the surface and check for breathing, get the diver to the boat or shore ASAP (treat as an unresponsive, diver underwater emergency) True or False: although recommendations vary slightly regarding how to handle an underwater convulsion, in all cases the primary concern is getting the diver to the surface to prevent drowning and to begin providing aid. - ANSWER: True If a diver is suspected of having DCI after an enriched air dive.... - ANSWER: Contact local emergency personnel and diver emergency services. Administer emergency, oxygen and first aid as you normally would. The maximum and contingency oxygen partial pressure limit is _______ ata/bar - ANSWER: 1. For the most common blends of enriched air, what are the maximum depths in get it before exceeding 1.4 ata? - ANSWER: 32% - 111 ft 36% - 95 ft True or False: the primary hazard of exceeding oxygen exposure limits is drowning due to central nervous system (CNS) oxygen toxicity. - ANSWER: True
initial analysis is a qualified enriched air blender. - ANSWER: False; you still need to take responsibility of your safety and always double check everything. True or false: The first step in analyzing enriched air is to calibrate the oxygen analyzer - ANSWER: True The standard of practice for accuracy of enriched air analysis is plus or minus - ANSWER: 1% After Analyzing enriched air, you should compare your analysis with... - ANSWER: the oxygen percent on the cylinder contents sticker or tag Guidelines to apply when diving with an enriched air computer include.... - ANSWER: staying well within computer's no stop and O2 exposure limits, knowing the blend's max depth and using the maximum depth warning on the computer as a secondary alert, and making safety stops and following all conservative dive practices ? If you begin to near an oxygen limit or a no decompression limit displayed on your computer, you should... - ANSWER: ascend until your computer displays a longer limit and stay that shallow or shallower? True or False: If after diving with enriched air, you forget to set your computer with the enriched air blend and make a repetitive dive, some models will default to an error mode, whereas other models will stay set for the previous enriched air blend. - ANSWER: False- the computer will enter an error mode and you may have to wait 12 hours before you use it again. True or false: you say moose in Riched air computers by letting the computer automatically analyze the blend you're using - ANSWER: False. Computers do
not analyze your gas blend. Do you have to set the computer based on your analysis. If your enriched air computer fails during a dive, you should.... - ANSWER: immediately ascend to 5m/15ft, make a safety stop and end the dive If a diver convulses underwater, you should.... - ANSWER: hold the regulator in the mouth if it is there, get the diver to the surface and check for breathing, get the diver to the boat or shore ASAP (treat as an unresponsive, diver underwater emergency) True or False: although recommendations vary slightly regarding how to handle an underwater convulsion, in all cases the primary concern is getting the diver to the surface to prevent drowning and to begin providing aid. - ANSWER: True If a diver is suspected of having DCI after an enriched air dive.... - ANSWER: Contact local emergency personnel and diver emergency services. Administer emergency, oxygen and first aid as you normally would.
