An Alternative Technique To Map Noise Exposure And Prediction Of Noise Levels In Industri Compliance To Noise Exposure Regulations 1989

Hilton, Smith Judan (2007) An Alternative Technique To Map Noise Exposure And Prediction Of Noise Levels In Industri Compliance To Noise Exposure Regulations 1989. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This project present the alternative technique to map noise exposure and prediction of noise levels in industry compliance to noise exposure regulation 1989. This project conducted experimentally, which was focused on obtaining noise contours to map out the entire workplace or the measurement site where different scenarios can be evaluated. In an area such as a machinery room in industry, there are a number of closely placed noise sources emitted by the machines. Basics theories and formulation such as the sound pressure level, room constant and the directivity index are used as some contributions to make measurement and analysis of this experiment. Noise mapping can be performed by using the readily available integrating sound level meter. The data then will be transferred to the spreadsheets algorithm. By using these algorithms that was developed using a programme preferably the Microsoft EXCEL, the calculations of noise levels can be made. Then, the noise map will be created manually after being provided with the layout plan. Different scenarios are selected to see the theoretical prediction of noise level in an area under assessments and some evaluation from the results can be made thereafter. It was found that there are some differences between the experimental and the theoretical values of the noise levels and it is shown by the calculations of the error percentage from both values. Parameters such as the sound absorption coefficients for the room surfaces and the area of the room surfaces participated importantly to determine the relevant experimental and theoretical values for the noise measurements. By generating a noise map illustrating the distribution of noise, one is provided with a graphical representation of sound pressure levels, that is the level of noise within the workplace and moreover, it can meets or compliance with the rules and regulations required as stated in the Factories and Machinery (Noise Exposure) Regulations 1989.

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