What is the significance of “O2 service” tagging for tanks?

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The significance of “O2 service” tagging for tanks lies in its indication that the tank has been specifically cleaned and prepared for use with high concentrations of oxygen, such as those found in Enriched Air Nitrox mixtures. This cleaning process typically involves removing any contaminants that could potentially combust or react negatively with elevated oxygen levels. When a tank is marked with O2 service, it assures users that it adheres to safety standards necessary for high-oxygen environments, ensuring that divers can utilize the tank safely for deeper dives or in conditions where oxygen levels are greater than that of regular air.

This tagging is crucial for safety as using a tank that is not properly cleaned for oxygen service can lead to significant hazards, including the risk of fire or explosion. Therefore, recognizing the O2 service tag is essential for divers to ensure that they are using equipment that is both safe and appropriate for their dive plans.

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