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有限空间作业危险有害因素一是有限空间内含有的有害物质浓度超过威胁生命或健康的规定浓度。有限空间由于通风不良、空气成分复杂,故与一般工作场所相比,存在更多的危险有害因素,作业环境的危害程度更高。在许多情况下,有限空间内含有的有害物质浓度超过了规定浓度。有害物质达到一定浓度时,若作业人员未佩戴呼吸防护用品或呼吸防护用品因故障等原因失效,一旦短暂接触高浓度的有害物即会对大脑、心脏或肺部造成终身伤害,对作业人员构成生命威
Hazardous and hazardous operations in limited space First, the concentration of harmful substances contained in confined spaces exceeds the specified concentration that is life-threatening or health-threatening. Limited space due to poor ventilation, air composition is complex, so compared with the general workplace, there are more dangerous and harmful factors, the operating environment more harmful. In many cases, the concentration of hazardous substances contained in confined spaces exceeds the specified concentration. Harmful substances reach a certain concentration, if the operator did not wear respiratory protection or respiratory protection failure due to failure, etc., once the short-term exposure to high concentrations of harmful substances that will cause damage to the brain, heart or lung life, the composition of the operator Life Granville