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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/72514

    Title: 更換低噪音工具以改善廠房噪音之研究-以汽車製造A廠為例;Reducing Noise Level and Exposure via Tool Replacement–Case Study of a Motor Vehicle Manufacturer
    Authors: 鄭亦男;Cheng,Yi-Nan
    Contributors: 環境工程研究所在職專班
    Keywords: 汽車裝配作業;噪音危害;手工具改善;wrenches;noise exposure;hearing loss;vehicle manufacturer
    Date: 2016-07-21
    Issue Date: 2016-10-13 15:25:59 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 汽車製造廠裝配作業具有長時間工作與作業高重複性等特性,其
    量測,其結果顯示新式手工具在模擬鎖付時平均噪音值為91.8 dB(A)
    較現行使用手工具之平均噪音值降低約11 dB(A)。透過實際更換作業
    新式手工具之作業站勞工平均八小時暴露劑量為82.5 dB(A)較原手
    工具平均噪音值降低約4.9 dB(A)。本研究目前僅針對手工具部分進
    暴露改善。;In the motor vehicle assembly line, employees typically have long
    working hours and suffer highly from repeated operation problem. The
    operation hazards associated may include cuts, crushing, ergonomics
    hazard, and exposure to hazardous noise. Among those hazards, cuts,
    crushing, and ergonomics hazard can generally be improved by
    engineering control and personal protective devices. However,
    employees′ long-term exposure to noise is difficult to resolve and it will
    cause hearing loss, psychological influence, masking effect,
    communication influence, and poor performance. The purpose of this
    research is to reduce employees′ noise exposure level. After investigating
    the sources of noise in the motor vehicle assembly line, we found the
    hand tools used such as electric and air impact wrenches were the major
    sources of noise. Our major target was to apply the new wrenches which
    are of low noise level in a lock attachment torque force of quality needs.
    In the simulative test, the noise level of new electric wrench fastening a
    screw was measured as 91.8 dB(A), which is 11 dB(A) lower than the old
    one. After replacing air impact wrenches with new electric wrenches in
    the assembly line, the employees′ noise exposure level was significantly
    reduced to 82.5 dB(A) which is 4.9 dB(A) lower than before. Although
    this research only discussed wrenches replacement, the results obtained
    reveal that replacing new electric wrenches could effectively reduce
    employees′ noise exposure level and brings economic benefits. It has set a
    model for other motor vehicle manufacturers to improve employee’s
    noise exposure.
    Appears in Collections:[環境工程研究所碩士在職專班] 博碩士論文

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