In Nitrox diving, what does the term 'MOD' refer to?

In Nitrox diving, the term 'MOD' stands for Maximum Operational Depth. This concept is critical for divers using enriched air because it indicates the deepest depth at which a specific Nitrox mixture can be safely used without exceeding the maximum allowable partial pressure of oxygen. This is essential for preventing oxygen toxicity, which can occur at depths where the partial pressure of oxygen increases. The MOD helps divers to determine their safe limits based on the percentage of oxygen in their Nitrox mix and the depth of their dive.

Understanding and calculating the MOD allows divers to plan their dives more effectively, ensuring they stay within safe limits for both depth and oxygen exposure, thereby minimizing the risks associated with diving with higher oxygen concentrations. Successful dives depend on adhering to these guidelines to maintain safety during the activity.