Hidden dangers in a simulation centre

Abstract In the article, we emphasize the need for all equipment in a simulation centre to be maintained in excellent working condition, and present a case of nitrous oxide (N2O) leakage through a damaged pressure regulator. For a considerable time faulty operation of the pressure-reducing valve went unnoticed, resulting in slow, imperceptible leakage of gas from the cylinder. A careful soap test revealed that gas was escaping through a small nozzle on the back of the pressure regulator. The leakage was inaudible but could be felt by placing a finger on the valve nozzle.