Recently, another confined space operation accident occurred in Foshan, Guangdong, resulting in a tragedy of 1 death and 2 injuriesAccording to the report of the Nanhai District Emergency Management Bureau of Foshan City, at 16:26 on January 6, 2024, the public reported that someone was trapped in the sewer near Xiaotangtang New Market in Shishan Town.
After a preliminary investigation, the scene of the incident wasRain and sewage diversion projectThe construction crew was there that afternoonDuring sewer operations, 1 worker is trapped and the other 2 workers are in the process of assisting in the process of getting outSuspected cause of gas inhalationFeeling unwell. The three injured were all sent to the hospital for treatment, one of the workers died at about 3 a.m. on January 7, and the other two workers were further injured in the hospital.
Why do you inhale toxic and harmful gases during sewer operations, cause physical discomfort, and even threaten your life, which comes from a "killer".Limited space。Due to the poor ventilation in the closed or semi-enclosed space, the "limited space" is easy to cause the accumulation of toxic and harmful gases, the accumulation of flammable and explosive gas content, and the lack of oxygen, which in turn creates the risk of accidents such as poisoning, suffocation, and so on.
Limited space is common in life, such as sewage wells, basements, septic tanks, vehicle tanks, ship holds, overflow tanks, cellar tanks, fertilizer tanks, etc. When people carry out relevant operations and activities in a limited space, they need to be alert to the occurrence of relevant risk factors, and can also use relevant technologies and instruments to monitor toxic and harmful gases, flammable and explosive gases, dust, oxygen concentrations and other real-time monitoring in the space, so as to achieve safety monitoring and prevention, and avoid the occurrence of accidents and tragedies.
Sichuan Wangwang Environmental Protection Technology's "limited space operation risk management and control system".It can monitor the concentration of flammable and explosive gases such as methane and hydrogen, toxic and harmful gases such as hydrogen sulfide and carbon monoxide, and explosion-related dust in real time, and automatically alarm when the concentration reaches the threshold to remind on-site personnel to take response measures. It is widely used in chemical plants, sewage treatment plants, fertilizer plants, municipal sewage treatment, underground pipe corridors and other scenarios.