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对实验室噪声问题的探讨
[ 2012-2-17 17:42:00 | By: cnjsjjjp ]
 

缘由:某企业设置在办公楼(离厂区围墙较远)的实验室增设6台排风机,排风机的噪声应该控制在多少以下?标准依据是什么?

       分析:首先可以确定这是一个工厂内部(实验室)的噪声问题,但是,噪声对工厂外部也可能有影响;其次,“增设排风扇”是对实验室进行改造,是一个新扩改项目;第三,噪声是排风扇产生的,可能对厂区外部有噪声影响。

       一、标准适用:

       1、时间适用,也就是有效标准。涉及到的有关噪声的可以参考的现行有效标准有五个:1、《声环境质量标准》GB309620082、《工业企业厂界环境噪声排放标准》GB12348-20083、《工作场所有害因素职业接触限值  物理因素》GBZ2.2-20074、《工业企业噪声控制设计规范》GB/J8719855、《工业企业噪声卫生标准(试行草案)》(卫生部、国家劳动总局,1979

    2、区域适用:从各个标准的适用范围来看,1、噪声对厂区外部有影响的,应该执行的标准有:《声环境质量标准》GB30962008和《工业企业厂界环境噪声排放标准》GB12348-20082、对厂区内部,应该执行的标准有:《工作场所有害因素职业接触限值  物理因素》GBZ2.2-2007;《工业企业噪声控制设计规范》GB/J871985;《工业企业噪声卫生标准(试行草案)》(卫生部、国家劳动总局,1979)。

    3、事项适用:这里涉及到两个事项,一个是新增排风扇,另一个是排风扇产生和排放噪声。那么,适用的标准有:《工业企业噪声控制设计规范》GB/J871985;《声环境质量标准》GB30962008和《工业企业厂界环境噪声排放标准》GB12348-2008

       二、噪声值的确定:

 

       1、依据《工业企业噪声控制设计规范》GB/J871985,上述增设排风扇的噪声控制应该是:车间所属办公室、实验室、设计室(室内背景噪声级) 70分贝;厂部所属办公、会议、设计、中心实验室(包括试验、化验、计量室) 60分贝。

       2、厂界噪声值。工厂所处位置为3类声环境功能区(指以工业生产、仓储物流为主要功能,需要防止工业噪声对周围环境产生严重影响的区域)。依据《声环境质量标准》GB30962008和《工业企业厂界环境噪声排放标准》GB12348-2008,确定厂界(工厂的边界)噪声值为昼间65分贝,夜间55分贝。

       基于实验室离厂界较远,排风扇噪声在空间的衰减,因此,对排风扇采用60分贝的噪声控制值是比较合适的。

 
 
  • 标签:实验室 噪声 标准 
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    原创
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    原创
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    原创
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