船舶制造维修、建筑工地、石油炼化、核电建设、煤矿、仓库码头储运、农产品加工、城市管道、污水处理、建筑通风等都存在如何安全进入受限空间的问题。进入受限空间作业是非常高风险的作业。统计显示,即使在安全关注度非常高的英国,平均每年有15人以上死于受限空间作业事故。这些死伤事故不仅发生在工艺复杂的作业场 Shipbuilding and maintenance, construction sites, oil refining, nuclear power construction, coal mines, warehouses and storage terminals, agricultural products processing, urban pipelines, sewage treatment, ventilation and other building there is the problem of how to enter the restricted space safely. Entering restricted space work is a very high risk assignment. Statistics show that even in Britain, where safety concerns are very high, an average of more than 15 people die in confined space operations each year. These casualties not only occurred in complex process sites