What does ConVENTID stand for?
Divers trained to use nitrox may memorise the acronym VENTID-C or sometimes ConVENTID, (which stands for Vision (blurriness), Ears (ringing sound), Nausea, Twitching, Irritability, Dizziness, and Convulsions).
What is FO2 in diving?
FO2 is the fraction of oxygen or the % Oxygen. PO2 is the partial pressure of oxygen. P is the absolute pressure (depth divided by 10+1) The forward slash / is divided by. FO2 x P = PO2 = Fraction of oxygen x pressure = partial pressure of oxygen = Oxygen Dose.
What does EAN32 mean?
In recreational diving terms, enriched air nitrox (EANx) refers to any nitrogen/oxygen gas mixture with more than the 21 percent oxygen found in normal air. For example, 32 percent and 36 percent oxygen are common; you’ll hear them called nitrox 32 (or 36) or EAN32 (or 36).
What is the primary risk associated with diving Nitrox?
The primary risk associated with Nitrox diving (as opposed to diving air) is carbon monoxide (CO) poisoning. … Additional steps Nitrox divers can take to help avoid oxygen toxicity include all of the following except: Never exceed a PO2 of 2.0.
What may happen if you go too deep or stay too long?
-The most common symptoms include, but are not limited to, pain in the joints, numbness, paralysis, loss of balance, muscle weakness, and impaired thinking. What is the recommended first aid for decompression sickness?
How deep can you dive on nitrox?
However, when diving on nitrox, the potential for oxygen toxicity lurks well within the depth range of recreational diving: the maximum depth on 32 percent nitrox is 121 feet; on 36 percent nitrox, it’s just over 100 feet. Many divers regularly cruise at these depths and even deeper without giving it a second thought.
How deep can you dive without decompression?
There’s a bit of physics and physiology involved in a full explanation, but the short answer is: 40 metres/130 feet is the deepest you can dive without having to perform decompression stops on your way back to the surface.
How do you calculate PPO2?
It’s calculated by multiplying the percentage of O2 in your gas mix by the pressure it’s under. It’s important because oxygen becomes toxic above 1.6 or so. That means that the maximum operating depth (MOD – something else you’ll eventually see here) is determined to be the depth at which you hit the 1.6 PP02 boundary.
At what depth do you need to decompress?
The deeper and longer your dive the more chance you need decompression stops. Shallow dives of 6-10 metres (20-30 feet) you can spend over 200 minutes without a decompression stop. Dives to over 30 metres (100 feet) limit your dive time to around 20 minutes before a decompression stop is required.
At what depth does oxygen become toxic?
Oxygen toxicity occurs in most people when the partial pressure of oxygen reaches 1.4 atmospheres or greater, equivalent to slightly over 187 feet (57 meters) depth when breathing air (shallower depths when breathing oxygen concentrations greater than 20%).
What does Nitrox stand for?
Nitrox is a general name for any nitrogen/oxygen breathing gas mixture with an oxygen concentration higher than 21 percent. The mix can also be called SafeAir or Enriched Air Nitrox (EAN or EANx). The ‘x’ in EANx stands for the percentage of oxygen in the mix.