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Assessment of engineering noise controls at a talc processing plant

机译:滑石加工厂的工程噪声控制评估

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National Institute for Occupational Safety and Health (NIOSH) researchers conducted an investigation to quantify sound levels and to determine the amount of sound reduction provided by engineering noise controls installed in a talc processing plant. Baseline sound level and sound intensity measurements were performed at the plant, and the measurement locations were recorded for comparison to post-control measurements. Follow-up measurements were then made at the same locations after the initial noise controls were installed. The plant subsequently decided to implement additional noise controls and the researchers returned to conduct measurements for a final analysis of all noise controls. The most significant results showed a sound level reduction in the main mill area from a range of 93 to 104 dB(A) down to a range of 90 to 94 dB(A) and a total sound power level reduction of 21 dB(A) for air classifying Mill 3.
机译:美国国家职业安全与健康研究所(NIOSH)的研究人员进行了一项调查,以量化声级并确定由滑石粉加工厂中安装的工程噪声控制装置所产生的消声量。在工厂进行了基线声级和声强测量,并记录了测量位置,以便与控制后测量进行比较。在安装了最初的噪声控制装置之后,在相同的位置进行了后续测量。该工厂随后决定实施其他噪声控制,研究人员返回进行测量以对所有噪声控制进行最终分析。最显着的结果表明,主磨区的声音水平从93到104 dB(A)降低到90到94 dB(A)范围,总声功率水平降低21 dB(A)用于空气分级机3。

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