What is one of the additional steps Nitrox divers can take to avoid oxygen toxicity?

One of the primary ways Nitrox divers can avoid oxygen toxicity is by adhering to maximum partial pressure of oxygen (PO2) limits. Exceeding a PO2 of 2.0 atm can increase the risk of oxygen toxicity, which can lead to serious neurological and pulmonary complications during and after dives. During Nitrox diving, maintaining the PO2 below this threshold helps ensure that divers are less likely to experience harmful effects from elevated oxygen levels. This is a critical safety measure that divers must be aware of and actively manage by planning their dives and monitoring their gas mixtures.

In contrast, limiting dive duration to 30 minutes is not a universal rule applicable to all Nitrox dives, as dive times can vary greatly depending on factors such as depth and the specific mix of Nitrox being used. Diving alone is generally discouraged because a buddy system enhances safety and provides assistance in emergencies. Rapidly ascending after each dive does not mitigate the risks associated with oxygen toxicity and is actually contrary to safe diving practices, as it increases the risk of decompression sickness. Thus, keeping the PO2 within safe limits stands out as the most effective method for preventing oxygen toxicity among Nitrox divers.