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Gas poisoning and prevention

section 1 the concept of gas poisoning

1. What is poisoning? Patients caused by the action of poisons on the human body are called poisoning. Carbon monoxide is a kind of poison. In our company, gas poisoning essentially refers to carbon monoxide poisoning

2. Production and characteristics of carbon monoxide carbon monoxide will be produced when carbon containing substances cannot be fully burned due to insufficient air during the combustion process. Carbon monoxide is a colorless and odorless toxic gas with a specific gravity of 0.96, which is lighter than air. When carbon monoxide is inhaled by the human body, it will cause poisoning

3. Mechanism of coal gas poisoning mechanism of coal gas poisoning mechanism of coal gas poisoning carbon monoxide is a kind of asphyxiating toxic gas, which belongs to grade II poison. The control standard of carbon monoxide in the air is less than 30mg/m3. After being inhaled, carbon monoxide enters the blood circulation system through the alveoli. Because its affinity with hemoglobin (HB) in the blood is 200 ~ 300 times (240 times) greater than that of oxygen, the human body will combine with hemoglobin to produce carboxyhemoglobin (HbCO) after inhaling Co. Carboxyhemoglobin has no oxygen carrying capacity and is not easy to dissociate. The dissociation speed is 3600 times slower than that of oxygenated hemoglobin (HBO2), and the existence of carboxyhemoglobin (HbCO) affects the dissociation of oxygenated hemoglobin (HBO2), hinders the release of oxygen, causes hypoxia in all tissues of the body, and even suffocates

4. Symptoms of gas poisoning symptoms of gas poisoning symptoms of gas poisoning symptoms of gas poisoning by 2020, mild poisoning patients have faster heartbeat, depression, headache, dizziness, vomiting, nausea; The total cost of a medium-sized unit has fallen to 19 yuan per ton. Like the domestic market, it is also a 36 yuan drug addict who is difficult to break into. His pulse is fast and weak, he is flustered, he is in a coma at present, his pupils are dilated, and the patient is in a coma; In the case of severe poisoning, the lips become pink or purple, the hands and feet are cold, and the pulse stops. The heart beats dull and weak, loses consciousness, sometimes cramps, incontinence of urine and urine, and will die if not rescued in time

5. Different concentrations of carbon monoxide have the following effects on human body

acute CO poisoning: it refers to that the concentration of CO in the air is high, and people inhale a large amount of CO in a short time, and the poisoning symptoms are acute poisoning

chronic CO poisoning: refers to mild poisoning when the concentration of CO in the air is low and the co inhaled by the human body takes a long time. After cleaning, it emits like headache, dizziness and general weakness. If you continue to work and rest in this environment, the poisoning symptoms will continue to worsen. If you do not find it in time or rescue it in time, you may die

section II Prevention of gas poisoning accidents

I. causes of gas poisoning accidents

the causes of gas poisoning accidents are complex, which are related to equipment conditions, working environment, human behavior (mental state, violation of rules and regulations), emergencies and other factors. In short, there are both objective reasons caused by equipment and subjective reasons caused by human behavior

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