changes and treat membrane systems and air supply as separate components. Industry Drift: Are We Getting Too Comfortable? It’s easy to attribute these oversights to the demands of busy operations or the belief that “everyone does it this TRAINING continued
sensors regularly and keep calibration logs. Calibrate daily with a flowmeter and clean air. Verify ▪ analyzer stability. Flush fill whips before every nitrox fill. ▪ Label cylinders completely and require divers to ▪ double-check. Train staff to model precise gas ▪ analysis. Allow enough time for proper ▪ analysis and logging. Nitrox has become a profit center for most dive resorts. Invest in the tools, training, and maintenance needed to ensure client safety and limit your liability – it’s good business. Final Word: Our Standards Are Our Signature Nitrox itself isn’t dangerous – com- placency is. As nitrox use has become routine, we risk los-
way.” However, the truth is that normalized deviance – small, accepted deviations from best practices – accumulates over time, ultimately leading to a col- lapse in the system's reliability. What we model, they will mimic. If divemasters quickly check a valve with an analyzer for just a few seconds and say, “Yep, you’re good,” that be- comes the habit we teach. Sim- ilarly, if incomplete labels are used, the message is clear: short- cuts are acceptable. We must work actively to reverse this trend.
Calibrating an oxygen analyzer using ambient air at atmospheric pressure – standardized to 20.9% O ₂ for reliable reference.
ing the discipline that has kept divers safe for decades. The fix isn’t costly or complicated. It’s about culture. Raise the bar, lead by example, and refuse shortcuts. Precision isn’t a luxury – it’s our responsibility.
Raising the Bar: Best Practices for Professionals Consider the following a checklist – not just of actions, but of values: Use two analyzers per fill station and boat. Replace ▪
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