What does the acronym "MOD" stand for?

The acronym "MOD" stands for Maximum Operating Depth. This term is crucial in the context of diving with enriched air nitrox because it denotes the deepest depth at which a diver can safely use a specific nitrox mix without exceeding safe partial pressures of oxygen. Each nitrox blend has a calculated MOD based on its oxygen content, beyond which the risk of oxygen toxicity increases significantly.

Understanding MOD is essential for divers to ensure their safety while diving. For example, if a diver exceeds the MOD for their nitrox blend, they increase their risk of experiencing harmful effects from high oxygen levels, which can lead to serious health risks such as oxygen toxicity. By adhering to the calculated MOD, divers can plan their dives more effectively, ensuring that their exposure to oxygen remains within safe limits while enjoying the benefits of using nitrox, such as reduced nitrogen absorption and extended bottom times.