What are the most common symptoms of decompression sickness? - ACCURATE ANSWERS Pain in the joints, numbness, paralysis, loss of balance, muscle weakness, and impaired thinking
What is the recommended first aid for decompression sickness? - ACCURATE ANSWERS Controlling their temperature and admi...
What are the most common symptoms of decompression sickness? -
ACCURATE ANSWERS✔✔ Pain in the joints, numbness, paralysis,
loss of balance, muscle weakness, and impaired thinking
What is the recommended first aid for decompression sickness? -
ACCURATE ANSWERS✔✔ Controlling their temperature and
administering pure oxygen, then immediately getting them airlifted to a
hospital for the decompression chamber
What is the minimum concentration of oxygen required to maintain
consciousness at sea level? - ACCURATE ANSWERS✔✔ 16%
What is the maximum percentage of oxygen that sport divers use in a
Nitrox mixture? - ACCURATE ANSWERS✔✔ 40%
What is the maximum recommended depth for using 100 percent
oxygen? - ACCURATE ANSWERS✔✔ 20 feet
What FO2 does EAN 32 contain? - ACCURATE ANSWERS✔✔ 68
percent nitrogen and 32 percent oxygen
,What are two reasons why EAN32 is a good choice for Nitrox diving? -
ACCURATE ANSWERS✔✔ Will provide you with a good combination
of extended bottom time and unrestricted depth within the sport diving
range, &. using EAN32 poses less risk in terms of exposure to oxygen
than other richer mixtures.
What is the maximum partial pressure of oxygen (PO2) we use in Nitrox
diving? - ACCURATE ANSWERS✔✔ 1.6
What does the term oxygen toxicity mean? - ACCURATE
ANSWERS✔✔ condition that occurs when the diver breathes a mixture
of gas that allows the PO2 to exceed 1.6 by going too deep or exceeding
the time limit at a lower PO2
What is the primary risk associated with Nitrox diving? - ACCURATE
ANSWERS✔✔ Oxygen poisoning
What are the words represented by the acronym CONVENTID? -
ACCURATE ANSWERS✔✔ Con - convulsions, V - visual
disturbances,E - ringing/auditory hallucinations, N - nausea, T -
twitching, I - irritability/apprehension, D - dizziness
What does a Nitrox tank wrap used to identify Nitrox cylinders look
like? - ACCURATE ANSWERS✔✔ adhesive decal, generally 10-13
cm/4-5 in in width, that is designed to completely encircle the diameter
of the tank. The tape is usually printed in yellow with bold green letters
with the words Enriched Air and/or Nitrox printed continuously on it.
,This tape makes it quick and easy to spot a Nitrox bottle in a group of
tanks.
What are the two most important pieces of information that will appear
on a Nitrox fill tag or label? - ACCURATE ANSWERS✔✔ Nitrox
mixture used in the tank (FO2) and its MOD
What is the most important setting that must be made to your Nitrox
computer before every dive? - ACCURATE ANSWERS✔✔ oxygen %
(FO2) must be set
What is an oxygen analyzer? - ACCURATE ANSWERS✔✔ electronic
devices that are used to measure the percentage of oxygen in a gas
mixture
What are two equipment items that do not need to be cleaned for oxygen
service? - ACCURATE ANSWERS✔✔ buoyancy compensators and
their low pressure inflators and dry suit inflation valves
What does the term blender mean, as it applies to Nitrox diving? -
ACCURATE ANSWERS✔✔ A Nitrox or gas blender has specialized
training allowing him or her to fill dive cylinders with the exact gas that
divers need for their planned dive
What is the acceptable range of accuracy blenders must adhere to when
asked to supply a Nitrox mixture with a particular FO2? - ACCURATE
ANSWERS✔✔ 1%
, What is the function of a fill station log? - ACCURATE ANSWERS✔✔
Indicates that you take responsibility for the Nitrox that has been
delivered to you, and that you are satisfied that your cylinders have been
filled properly.
What are three ways to check for Nitrox availability when planning a
trip? - ACCURATE ANSWERS✔✔ consult your local SDI Dive Center
or do some research on the Internet. Another popular spot to look for
dive centers that provide Nitrox is in the directory in the back of popular
dive magazines.
What is the FO2 setting most dive computers default to? - ACCURATE
ANSWERS✔✔ 21%
Why it is important for team members to use the same Nitrox mixture? -
ACCURATE ANSWERS✔✔ So that if your dive buddy fills his tank
with air, or a different Nitrox mixture that allows him to go deeper
without violating his maximum PO2, and dives beyond the MOD for the
mixture you are using, you will not be able to go to his aid if he needs
help without violating the MOD of your mixture, so you both may
extend your bottom time and enjoy the same no-decompression limits.
What does the term technical diving refer to? - ACCURATE
ANSWERS✔✔ a type of recreational diving that goes beyond sport
diving limits. Typically, it requires additional specialized training,
planning techniques, and equipment.
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