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강영라,김태구 인제대학교 2010 仁濟論叢 Vol.25 No.1
This study contributes in noise reduction due to fluid transference through various pipes that surrounds work place. Furthermore, it focuses on the workers' operational efficiency and preventing future hearing loss due to excessive noise level. Upon analyzing the characteristics of similar pipes' noise in an industrial environment, the appropriate countermeasures are introduced. The results of the analysis indicate the pipe's main frequency is high frequency when noise level and pipes' temperature are high. Usually, piping ranges extensively. and operates continuously. So there are not various countermeasures except using noise absorptive materials. The results of the countermeasures points out to the reduction of the noise level as follows: 21dB(A) decreased at 30cm and 9dB(A) at 100cm distance from pipe.