有限空间多为封闭或半封闭自然通风不良的作业环境,极易产生硫化氢、一氧化碳等有毒有害气体或其他危险源,人员贸然进入作业或安全防护不当极易导致伤亡。今年以来,全国各地已发生多起有限空间作业典型事故。而湖南省近年来也发生了有限空间作业不当导致人员伤亡的事故。2016年湖南第8号安全生产警示提到了 Limited space is mostly closed or semi-closed natural ventilation poor operating environment, easily produce hydrogen sulfide, carbon monoxide and other toxic and harmful gases or other sources of danger, personnel rush into work or improper safety protection can easily lead to casualties. This year, more than one typical accident in limited space operations has taken place across the country. In recent years, there have been accidents in Hunan Province that led to casualties caused by improper operation in limited space. 2016 Hunan No. 8 production safety warning was mentioned