What is the main reason that compressed air is not preferred for deep diving operations?

The main reason that compressed air is not preferred for deep diving operations is due to nitrogen narcosis, a condition caused by the increased partial pressure of nitrogen when divers descend to greater depths. At these depths, nitrogen becomes more soluble in the body's tissues, leading to impaired cognitive and motor functions, similar to the effects of alcohol intoxication. Divers may experience confusion, euphoria, or a decrease in their ability to make rational decisions, which can be dangerous in an environment where clear judgment and coordination are critical.

As divers go deeper, the risk of nitrogen narcosis increases, making it essential to use other gas mixtures, such as helium and oxygen, which minimize nitrogen’s impact. These mixtures are intended to enhance safety and performance at depths greater than what compressed air can safely accommodate.

Understanding the implications of nitrogen narcosis helps divers recognize the potential hazards associated with deep dives and underscores the importance of utilizing alternative gas mixtures to maintain cognitive and physical performance during those operations.