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Noise is one of the occupational hazards inherent to many environments. As sterilization units are, by their very nature, enclosed and noisy places, it is necessary to assess and control noise levels in compliance with regulations and recommendations. A study was carried out in the sterilization unit’s washing area to compare the noise measured and the noise perceived by the team. Noise was measured using a sound level meter, and a questionnaire was created to assess the agents’ perception of noise levels. A clear alignment was observed between the measurements and the agents’ perception. The team’s awareness-raising work also enabled preventive and protective measures to be put in place.