Document Type : Research Paper


Department of Physics, College of Natural and Computational Sciences, Wollo University, Dessie, Ethiopia.


In countries like Ethiopia, the textile industries are facing a big problem of sound noise pollution. In these countries, the industrial hearing conservation program is not yet clearly developed. Thus, characterizing excessive noise pollutions in textile industries have been the aim of this research project and Kombolcha Textile Mill (KTM) is chosen as the case study. The study is concerned with the noise exposure and its characteristics at the different section of the Textile Mill. Before the actual excessive noise level measurements were collected in the Textile Mill, main areas where measurements were done had to be identified. This was done by prior physical observation and A-Weighted time-averaged sound pressure levels (L_Aeq) survey. More than one hundred walkthrough measurement points were done inside the textile mill. These data were analyzed using MATLAB software packages. Based on our analysis, the spinning and the weaving sections of the mills with its unit processes were identified as potential noise pollution in the factory. On these sections, the measurements were done for 4 – 5 h/d. The instrument used for measurements was a precision integrated portable professional sound level meter. The findings revealed that the KTM employees are working in hazardous environments of above 90 dB, which is the recommended safe limit of noise in the working environment for 8 h used in international standard. As a result an engineering and administration programs which includes different methods of how to control the problem has been recommended for conserving hearing at the KTM.


Main Subjects

[1]     Sensogut, C. (2007). Occupational noise in mines and its control-A case study. Polish journal of environmental studies16(6), 939.
[2]     Jayawardana, T. S. S., Perera, M. Y. A., & Wijesena, G. H. D. (2014). Analysis and control of noise in a textile factory. International journal of scientific and research publications4(12), 1-7.
[3]     Talukdar, M. K. (2001). Noise pollution and its control in textile industry. Indian journal of fiber and textile research, 26, 44-49.
[4]     Bedi, R. (2006). Evaluation of occupational environment in two textile plants in Northern India with specific reference to noise. Industrial health44(1), 112-116.
[5]     Yhdego, M. (1991). Assessment of noise pollution in friendship textile mill limited, Ubongo—Dar es Salaam. Environment international17(5), 479-485.
[6]     Ahmed, A. A. & Awadalkarim, M. A. (2015). Noise induced hearing loss at two textile plants in Sudan. European academic research, II (11), 13995- 14006.
[7]     Anjorin, S. A., Jemiluyi, A. O., & Akintayo, T. C. (2015). Evaluation of industrial noise:  a case study of two Nigerian industries.  European journal of engineering and technology, 3 (6), 2056-5860.
[8]     Sharma, A., & Sinha, A. K. (2018). Ultrasonic testing for mechanical engineering domain: present and future perspective. International journal of research in industrial engineering7(2), 243-253.
[9]     Barzegar, M., Ehtesham Rasi, R., & Niknamfar, A. H. (2018). Analyzing the drivers of green manufacturing using an analytic network process method: a case study. International journal of research in industrial engineering7(1), 61-83.
[10]   Nassrallah, F., Ellaham, N. N., Giguère, C., & Dajani, H. R. (2019). An indirect calculation method for estimating occupational sound exposure from communication headsets. The journal of the acoustical society of America145(2), 749-760.
[11]  Abbasi, A. A., Marri, H. B., & Nebhwani, M. (2011). Industrial noise pollution and its impacts on workers in the textile based cottage industries: an empirical study. Research journal of engineering and technology30(1).
[12]  Cardoso, A. P., Oliveira, M. J. R., da Silva, Á. M., Águas, A. P., & Pereira, A. S. (2006). Effects of long term exposure to occupational noise on textile industry workers’ lung function. Revista Portuguesa de Pneumologia (English Edition)12(1), 45-59.
[13]  Bedi, R., Shukla, K.,  & Sachdeva, A. (2004). Effects of impact noise on humans-a case study for drop forge hammers. Proceedings of the 7th international symposium transport noise and vibration. St. Petersburg, Russia.
[14]  Azadboni, Z. D., Talarposhti, R. J., Ghaljahi, M., Mehri, A., Aarabi, S., Poursadeghiyan, M., & Abbasi, M. (2018). Effect of occupational noise exposure on sleep among workers of textile industry. Journal of clinical & diagnostic research12(3).
[15]  Ballesteros, J. A., Fernandez, M. D., Sarradj, E., & Ballesteros, M. J. (2018). Identification and analysis of the noise sources of an engine settled in a car using array-based techniques. International journal of vehicle noise and vibration14(2), 171-190.
[16]  Zouani, A., & Hanim, S. (2016). Overview of noise and vibration in automotive engines. International journal of vehicle noise and vibration12(2), 162-181.