PADI Divemaster Certification Practice Exam

What is a common hazard when using enriched air?

1. Reduced visibility

2. Equipment malfunctions

3. Only certified divers using nitrox

4. Excessive buoyancy control

The correct answer is: Only certified divers using nitrox

The issue of using enriched air, commonly known as nitrox, revolves primarily around proper training and certification. Nitrox has a higher oxygen content than regular air, which allows divers to extend their bottom time and reduce the risk of nitrogen narcosis. However, this increased oxygen concentration also necessitates specialized knowledge and skills to manage its use safely. Only certified divers trained specifically for using nitrox are equipped to handle the unique hazards associated with it, such as oxygen toxicity and the need for gas management planning to mitigate potential risks. This is crucial because improper use of enriched air can lead to serious health consequences, including oxygen poisoning, especially at depths where pressure increases the partial pressure of oxygen. Therefore, the correct focus is on the importance of certification and understanding the specialized safety protocols that are integral when diving with enriched air, making this training imperative for all divers planning to utilize nitrox.