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某井下公司压井用的规格砂直径为2mm左右,所以需精细筛选。以往采用笨重的手工作业,劳动负荷大,且易产生大量粉尘,经测试车间空气中粉尘浓度CTWA(呼)=1·7mg/m3,游离S iO2含量68·76%,超过了国家职业接触限值。鉴于上述,由本单位牵头,有安全卫生共同参与此项治理工程,经实施投
A well downhole company specifications with the size of about 2mm sand diameter, so the need for fine screening. In the past, cumbersome manual work was used, and the work load was large and a lot of dust was easily generated. The dust concentration in the air of the tested workshop was 1.68 mg / m3 and the dust concentration in the air was 1.68 mg / m3, exceeding the national occupational exposure limits value. In view of the above, led by the unit, with safety and health to participate in the governance project, the implementation of the vote