In recent days, there have been a number of incidents of underground gas biogas poisoning in various areas, resulting in multiple casualties. At 14:10 on May 21, two pipe maintenance workers in Chengde City caused a fainting event due to biogas poisoning when they were working underground in a community in Luohe Town where they did not wear protective equipment. After being rescued by rescue workers, two trapped people were successfully rescued and sent to the hospital for treatment.
According to the firefighters of the Baimiaozi squadron of the Chengde City Fire Fighting Team participating in the rescue, they arrived at the scene and were informed by on-site investigations and inquiries that the shaft of the accident was 2 meters in diameter and about 3 meters deep, accompanied by a characteristic smell of biogas. The on-site people told rescue workers that two on-site maintenance personnel were trapped underground. Since no protective measures had been taken to enter the shaft operation, resulting in biogas poisoning, one trapped person was in a coma and the other was trapped. When I went to save workers, I was trapped in the well and my consciousness was blurred. The situation was urgency. According to the situation on the spot, rescue workers quickly started rescue operations and ordered the rescue team to bring along air respirator to ensure the safety of officers and soldiers while using the rescue tripod to enter the shaft to save people.
Rescuers told reporters that the shaft was dark and humid and the space was very narrow. Firefighters could only cling to trapped persons in the mud and lay a knot and use a tripod to pull the ground. Due to the fear that the coma trapped person was bruised during the ascent, he still needs to straighten his head. After about 10 minutes, two trapped people were successfully rescued and sent to the hospital for treatment. At present, trapped people are out of danger.
Related Links
Guangzong digester swallows three lives
On May 14, a woman in Guangzong County inadvertently fell into a methane tank. Her husband and relatives continued to save people. As a result, the three did not come up again. Later, the fire officers and soldiers of Guangzong County took three people from the digester. He was rescued and sent to the hospital and died after being rescued. (Reporter Lu Yuhui)
Knowledge link
Biogas poisoning
Biogas poisoning refers to asphyxial poisoning accidents caused by people entering an unventilated digester and sewer pipe due to lack of oxygen and inhalation of harmful gases. Light persons are dizzy, have tight chest, and have difficulty breathing. They are in a coma, unconscious, and even die.
Emergency measures
1. Emergency calls should be made promptly after a biogas poisoning accident.
2. In the event of fainting of persons in the pool, it shall be immediately and manually used to send air into the pool.
3. After the air is updated, rescue workers can rescue it from the pool.
4. After the asphyxiation personnel are rescued, place a ventilated area, unfasten the tops and belts, and pay attention to keep warm. If breathing or heartbeat stops, artificial respiration should be done or chest cardiac compression should be performed and the patient should be immediately taken to the hospital for emergency treatment.
Lower pool protection
1. Before the emergency treatment in the lower pool, one is to open the movable cover and discharge the material out of the pool so as to ventilate the three inlets and outlets and the movable cover, or use the air blow method to update all the air in the pool.
2. Put small animals (chickens, ducks, cats, etc.) into the pool and observe for 15-30 minutes. If the animals are normal, they can go to the pool.
3. Rescuers should wear a safety rope under the arm before going into the pool. There should be special care outside the pool. Hold the breath after entering the pool and rescue people from the pool as soon as possible. The lower pool personnel should not feel discomfort. The nursing staff outside the pool should immediately pull it up. Out, rest in a cool place with ventilation.
Expert tips
1. During the rescue, it is forbidden to open fire and prevent explosion.
2. The biogas digester that has been put into use is not allowed to be discharged or overhauled in the lower pool, regardless of whether or not the gas in the tank is operating.
3. Always cover all lids of the digester and sewer pipe to prevent humans and animals from falling into the pool.
4. For various reasons, all biogas tanks that have been scrapped must be landfilled in time to avoid potential safety hazards.
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