我厂生产的前进型和建设型蒸汽机车,每台装风喇叭二个。附件车间每月都要对所生产的风喇叭进行声响试验,过去一直是在机械大厂房内开放式地进行。由于风喇叭噪声级高达120dBA以上,大大超过国家《工业企业噪声卫生标准》规定的允许值,不但直接对操作工人身体健康有很大危害,而 I plant the forward-type and construction-type steam locomotive, each installed two wind horn. Each month, the workshop of attachments carries out acoustic tests on the wind trumpets to be produced. In the past, it was openly carried out in large machinery factories. As the wind horn noise level up to 120dBA or more, much higher than the national “noise level of industrial enterprises,” the allowable value, not only directly on the health of workers have a great hazard, and