Our noise control works on the XL-HS line at Oyak Renault Factory have been successfully completed. Within the scope of the project, the average sound level before the application was 87.95 dB(A), but after the noise control work, the sound level was reduced to 84.2 dB(A). Thus, the limit value of 85 dB(A) was reduced and the sound level was made suitable for the work area.