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            <p style="margin: 0px; text-indent: 25px; padding: 0px; text-align: center;"><strong><span style="font-family: 宋体;color: rgb(25, 25, 25);letter-spacing: 0;font-size: 13px;background: rgb(255, 255, 255)">各个工作场所噪声控制标准及其测定方法</span></strong></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:25px;padding:0 0 0 0 ;text-autospace:ideograph-numeric;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;color: rgb(25, 25, 25);letter-spacing: 0;font-size: 13px;background: rgb(255, 255, 255)"><span style="font-family: 宋体; color: rgb(25, 25, 25); letter-spacing: 0px; background: rgb(255, 255, 255); font-size: 16px;"></span>一、<span style="font-family:宋体">工作中的噪声来源</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;padding:0 0 0 0 ;text-autospace:ideograph-numeric;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;color: rgb(25, 25, 25);letter-spacing: 0;font-size: 13px;background: rgb(255, 255, 255)"><span style="font-family:宋体">工作中的噪声影响大多来源于生产性噪声，生产性噪声又叫工业噪声，其广泛存在于各种类型的企业中，是最常见的职业病危害因素之一。各个行业产生的工业噪声具有不同的特点：发电厂噪声主要产生于各种设备在运转过程中由于振动、摩擦、碰撞而产生的流体动力性噪声；采矿业环境噪声主要由各种机器操作产生、如采掘、钻孔、铲运、破碎等产生的噪声；汽车制造业产生的噪声主要为冲压、焊接、风机和运输设备以及日常的打磨、抛光等；纺织厂噪声源较多，其中梭织车间噪声强度最高；机械加工行业主要噪声源来自于振动、摩擦、碰撞而产生的机械性噪声；</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:25px;padding:0 0 0 0 ;text-autospace:ideograph-numeric;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;color: rgb(25, 25, 25);letter-spacing: 0;font-size: 13px;background: rgb(255, 255, 255)">二、</span><span style="font-family: 宋体;color: rgb(25, 25, 25);letter-spacing: 0;font-size: 13px;background: rgb(255, 255, 255)"><span style="font-family:宋体">工业噪声的特征</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;padding:0 0 0 0 ;text-autospace:ideograph-numeric;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;color: rgb(25, 25, 25);letter-spacing: 0;font-size: 13px;background: rgb(255, 255, 255)"><span style="font-family:宋体">1）强度高：工业噪声声压级通常高于80 dB(A)，甚至高达110 dB(A)以上，长期接触可对人耳听觉和非听觉系统造成损伤；</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;padding:0 0 0 0 ;text-autospace:ideograph-numeric;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;color: rgb(25, 25, 25);letter-spacing: 0;font-size: 13px;background: rgb(255, 255, 255)"><span style="font-family:宋体">2）高频音所占比例较大：以高频多见，其危害高于中、低频；</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;padding:0 0 0 0 ;text-autospace:ideograph-numeric;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;color: rgb(25, 25, 25);letter-spacing: 0;font-size: 13px;background: rgb(255, 255, 255)"><span style="font-family:宋体">3）持续暴露时间长：在生产过程中，作业工人每个工作日持续接触强噪声的时间可长达数小时；</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;padding:0 0 0 0 ;text-autospace:ideograph-numeric;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;color: rgb(25, 25, 25);letter-spacing: 0;font-size: 13px;background: rgb(255, 255, 255)"><span style="font-family:宋体">4）其他有害因素联合作用：生产过程中往往同时伴有振动、高温、毒物等有害因素与之相互作用，对人体产生危害；</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;padding:0 0 0 0 ;text-autospace:ideograph-numeric;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;color: rgb(25, 25, 25);letter-spacing: 0;font-size: 13px;background: rgb(255, 255, 255)"><span style="font-family:宋体">三、工作环境下噪声控制标准</span></span></p><div class="tabledivclass" style="width: 99%; float: left;"><table cellspacing="0" align="left" width="615" style="max-width: 748px;"><tbody><tr style="height:17px" class="firstRow"><td width="615" valign="top" colspan="4" style="padding: 0px 7px; border-width: initial; border-style: none; border-color: initial;"><p style=";text-align:center;vertical-align:top"><br/></p></td></tr><tr style="height:20px"><td width="615" valign="top" colspan="4" style="padding: 0px 7px; border-width: initial; border-style: none; border-color: initial;"><p style=";text-align:center;vertical-align:top"><span style="font-family: 宋体;font-size: 14px"><span style="font-family:宋体">存在脉冲噪声工作场所，噪声声压级峰值和脉冲次数不应超过如下表1</span><span style="font-family:宋体">的规定。</span></span></p></td></tr></tbody></table></div><p style="margin-top:0;margin-right:0;margin-bottom:0;padding:0 0 0 0 ;text-autospace:ideograph-numeric;text-align:justify;text-justify:inter-ideograph"><br/></p><div class="tabledivclass" style="width: 99%; float: left;"><table cellspacing="0" align="left" width="618" style="max-width: 748px;"><tbody><tr style="height:16px" class="firstRow"><td width="618" valign="top" colspan="2" style="padding: 0px 7px; border-width: initial; border-style: none; border-color: initial;"><p style=";text-align:center;vertical-align:top"><span style="font-family: 宋体;font-size: 13px"><span style="font-family:宋体">表1</span><span style="font-family:宋体">工业企业内各类工作场所噪声限值</span></span><strong></strong></p></td></tr><tr style="height:16px"><td width="496" valign="center" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0);"><p style=";text-align:center;vertical-align:middle"><span style="font-family: 宋体;font-size: 12px">&nbsp;&nbsp;<span style="font-family:宋体">工作场所</span> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span></p></td><td width="122" valign="center" style="padding: 0px 7px; border-left: none; border-right: 1px solid rgb(0, 0, 0); border-top: 1px solid rgb(0, 0, 0); border-bottom: 1px solid rgb(0, 0, 0);"><p style=";text-align:center;vertical-align:middle"><span style="font-family: 宋体;font-size: 12px">&nbsp;<span style="font-family:宋体">噪声限值</span><span style="font-family:宋体">dB(A)</span></span></p></td></tr><tr style="height:19px"><td width="496" valign="center" style="padding: 0px 7px; border-left: 1px solid rgb(0, 0, 0); border-right: 1px solid rgb(0, 0, 0); border-top: none; border-bottom: 1px solid rgb(0, 0, 0);"><p style=";text-align:center;vertical-align:middle"><span style="font-family: 宋体;font-size: 12px">生产车间</span></p></td><td width="122" valign="center" style="padding: 0px 7px; border-left: none; border-right: 1px solid rgb(0, 0, 0); border-top: none; border-bottom: 1px solid rgb(0, 0, 0);"><p style=";text-align:center;vertical-align:middle"><span style="font-family: 宋体;font-size: 12px">85</span></p></td></tr><tr style="height:19px"><td width="496" valign="top" style="padding: 0px 7px; border-left: 1px solid rgb(0, 0, 0); border-right: 1px solid rgb(0, 0, 0); border-top: none; border-bottom: 1px solid rgb(0, 0, 0);"><p style=";text-align:center;vertical-align:top"><span style="font-family: 宋体;font-size: 12px">车间内值班室、观察室、休息室、办公室、设计室的室内背景噪声级</span></p></td><td width="122" valign="top" style="padding: 0px 7px; border-left: none; border-right: 1px solid rgb(0, 0, 0); border-top: none; border-bottom: 1px solid rgb(0, 0, 0);"><p style=";text-align:center;vertical-align:top"><span style="font-family: 宋体;font-size: 12px">70</span></p></td></tr><tr style="height:19px"><td width="496" valign="top" style="padding: 0px 7px; border-left: 1px solid rgb(0, 0, 0); border-right: 1px solid rgb(0, 0, 0); border-top: none; border-bottom: 1px solid rgb(0, 0, 0);"><p style=";text-align:center;vertical-align:top"><span style="font-family: 宋体;font-size: 12px">正常工作状态下精密装配线、精密加工车间、计算机房</span></p></td><td width="122" valign="top" style="padding: 0px 7px; border-left: none; border-right: 1px solid rgb(0, 0, 0); border-top: none; border-bottom: 1px solid rgb(0, 0, 0);"><p style=";text-align:center;vertical-align:top"><span style="font-family: 宋体;font-size: 12px">70</span></p></td></tr><tr style="height:38px"><td width="496" valign="top" style="padding: 0px 7px; border-left: 1px solid rgb(0, 0, 0); border-right: 1px solid rgb(0, 0, 0); border-top: none; border-bottom: 1px solid rgb(0, 0, 0);"><p style="vertical-align: top"><span style="font-family: 宋体;font-size: 12px">主控制室、集中控制室、通信室、电话总机室、消防值班室、一般办公室、会议室、设计室、实验室的室内背景噪声级</span></p></td><td width="122" valign="center" style="padding: 0px 7px; border-left: none; border-right: 1px solid rgb(0, 0, 0); border-top: none; border-bottom: 1px solid rgb(0, 0, 0);"><p style=";text-align:center;vertical-align:middle"><span style="font-family: 宋体;font-size: 12px">60</span></p></td></tr></tbody></table></div><p style="margin-top:0;margin-right:0;margin-bottom:0;padding:0 0 0 0 ;text-autospace:ideograph-numeric;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;color: rgb(25, 25, 25);letter-spacing: 0;font-size: 13px;background: rgb(255, 255, 255)">&nbsp;</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;text-indent:25px;padding:0 0 0 0 ;text-autospace:ideograph-numeric;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;color: rgb(25, 25, 25);letter-spacing: 0;font-size: 13px;background: rgb(255, 255, 255)"><span style="font-family:宋体">这里生产车间噪声限值的规定与</span><span style="font-family:宋体">GBZ &nbsp;2.2-2007相同，室内背景噪声级指室外传入室内的噪声级。规定工业企业脉冲噪声C 声级峰值不得超过140dB</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;text-indent:25px;padding:0 0 0 0 ;text-autospace:ideograph-numeric;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;color: rgb(25, 25, 25);letter-spacing: 0;font-size: 13px;background: rgb(255, 255, 255)"><span style="font-family:宋体">该规范适用于工业企业的新建、改建、扩建与技术改造工程的噪声控制设计。规范规定工业企业的新建、改建和扩建工程的噪声控制设计应与工程设计同时进行。工业企业噪声控制设计，应对生产工艺、操作维修、降噪效果、技术经济性进行综合分析。对于生产过程和设备产生的噪声，应首先从声源上进行控制，以低噪声的工艺和设备代替高噪声的工艺和设备，如仍达不到要求，则应采用隔声、消声、吸声、隔振以及综合控制等噪声控制措施。对于采取相应噪声控制措施后其噪声级仍不能达到噪声控制设计限值的车间及作业场所，应采取个人防护措施。</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:25px;padding:0 0 0 0 ;text-autospace:ideograph-numeric;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;color: rgb(25, 25, 25);letter-spacing: 0;font-size: 13px;background: rgb(255, 255, 255)">三、</span><span style="font-family: 宋体;color: rgb(25, 25, 25);letter-spacing: 0;font-size: 13px;background: rgb(255, 255, 255)"><span style="font-family:宋体">测量仪器的使用</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;text-indent:25px;padding:0 0 0 0 ;text-autospace:ideograph-numeric;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;color: rgb(25, 25, 25);letter-spacing: 0;font-size: 13px;background: rgb(255, 255, 255)"><span style="font-family:宋体">固定的工作岗位选用声级计，流动的工作岗位优先选用个人声暴露计</span><span style="font-family:宋体">(个人噪声剂量计)。传声器应放置在劳动者工作时耳部的高度,站姿为1.5m,坐姿为1.10m(GB/T 21230中规定的站姿为1.55&plusmn;0.075m,坐姿为0.80&plusmn;0.05m)。若要求高准确度,则最好是选择在受暴露的人员身上布放传声器，传声器应尽可能地放在离外耳道入口约0.1m的位置。如果两耳噪声强度相差较大，传声器应放在噪声较高的一侧。测量时间为实际工作日的工作时间。工作场所风速超过3m/s时，传声器应戴上风罩。脉冲噪声测量时，应测量脉冲噪声的峰值和工作日内脉冲次数。每组测量的前后应对仪器进行声学校准，声学校准时应选用符合1级或者2级技术指标的声级校准器。</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;text-indent:25px;padding:0 0 0 0 ;text-autospace:ideograph-numeric;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;color: rgb(25, 25, 25);letter-spacing: 0;font-size: 13px;background: rgb(255, 255, 255)"><span style="font-family:宋体">职业卫生噪声测量仪器主要包括</span><span style="font-family:宋体">ASV5910系列个人声暴露计和YSD130系列声级计。流动的工作岗位优先选用随身佩戴的ASV5910系列个人声暴露计或者ASV5911型噪声分析仪，有防爆要求的选用具有防爆功能的个人声暴露计；非流动岗位且有防爆要求的建议选用YSD130噪声分析仪（2级&nbsp;矿用本安型声级计）、YSD132本安型声级计（1级）；无防爆要求时可选用AWA6228+型、AWA5661型声级计（1级）或AWA5688型、AWA5636型声级计（2级）。</span></span></p><p><br/></p> 
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