Noise exposure group surveys - Number of days to sample
Mots-clés :
Acoustic noise, Personnel, Probability density function, Sampling, Students, Testing, Group surveys, Noise exposure, Sample sizes, WorkersRésumé
Cette étude a été conduite afin de determiner combien de jours sont nécessaires pour obtenir des résultats fiables lors de la mesure à l’exposition au bruit d’un groupe de travailleurs. En tout, 13 groupes provenant de deux différents sites ont été étudiés. L’échantillonnage variait entre trois et 24 employés avec une moyenne de 12.5 employés. On a mesuré l’exposition au bruit pendant quatre jours consécutifs. Le rapport inclus les résultats quotidiens obtenus (LTrade8) et le Lprade32 correspondant, en utilisant le Student’s t-Test. Les résultats obtenus avec l’échantillonnage testé ont démontré qu’il n’existait pas de différences significatives dans 88,5% des cas. On a donc conclu qu’une journée de test est suffisant. Par contre, puisqu’il est difficile d’identifier une « journée-type », il est recommandé d’effectuer des mesures pendant deux jours.
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