市政供热管线有限空间作业主要危害因素分析及事故预防对策研究  

Major Hazards in Heating Pipe Confined Space and Accident Prevention Method

作　　者：刘艳[1] 杨春丽[1] 谭聪[1] 秦妍[1] LIU Yan;YANG Chunli;TAN Cong;QIN Yan(Occupational Hazards Control Technology Center,Beijing Municipal Institute o f Labour Protection Beijing 100054)

机构地区：[1]北京市劳动保护科学研究所职业危害控制技术中心,北京100054

出　　处：《工业安全与环保》2018年第6期90-94,共5页Industrial Safety and Environmental Protection

摘　　要：为掌握市政有限空间作业危害因素,探究其成因,以北京市供热检查室为研究对象,现场检测了不同检查室内的氧气、二氧化碳等气体的含量以及温度和湿度,分析了氧含量与内部环境参数之间相关性,并提出相应的危害控制方法。研究结果表明大部分检查室存在缺氧窒息危害,密闭检查室尤为严重,且内部温度、湿度较高,作业环境较为恶劣;大部分检查室内二氧化碳远高于正常大气二氧化碳含量,密闭检查室内的二氧化碳含量均值和超标比率较高,内部二氧化碳含量总体较大;氧含量与二氧化碳含量之间存在显著负相关关系。In order to find major hazards in heating pipe confined space,taking Beijing heating chamber for example,environmental parameters in inspection chamber,such as oxygen content,carbon dioxide content,temperature,humidity and so on,were detected,the correlation between oxygen content and other environmental parameters was analyzed,and accidents prevention methods were also discussed. The result shows that oxygen is deficit in most inspection chambers,especially serious in closed inspection chambers,also with high indoor temperature and humidity and bad working condition; carbon dioxide content in most chambers is higher than normal,and it is more serious in closed inspection chambers; there is significant negative correlation between oxygen content and carbon dioxide content.

关 键 词：有限空间 危害 缺氧 影响因素 预防对策 

分 类 号：TU995.3[建筑科学—供热、供燃气、通风及空调工程]