On the blackboard!Carbon monoxide poisoning asphyxia accident prevention knowledge to know

2022-04-23 0 By

Since February this year, there have been two cases of carbon monoxide poisoning caused by improper use of charcoal fires for home heating, resulting in casualties.In order to learn lessons, enrich the people’s knowledge of safety protection, improve self-prevention ability, strengthen safety awareness, prevent the repetition of similar accidents.Today, we will popularize the prevention of carbon monoxide poisoning asphyxia accident some basic knowledge.Because carbon monoxide is a colorless, odorless, non-irritating suffocation gas, it is difficult to detect, excessive inhalation of carbon monoxide, will lead to hypoxia suffocation of human tissues, tissue cells are damaged, this is “gas poisoning”.Mild poisoning occurs when the indoor air is not ventilated and the carbon monoxide concentration reaches 0.04%-0.06%.It only takes a few minutes for people to be poisoned, and when they realize that they are poisoned, they have no strength to save themselves.Therefore, once there is carbon monoxide in the room, it is easy to cause carbon monoxide poisoning and asphyxia accidents.One, the mechanism of carbon monoxide poisoning all carbon containing substances, such as wood, coal, charcoal, coke, gasoline, diesel oil, kerosene, liquefied petroleum gas, natural gas will produce carbon monoxide (CO) when combustion is incomplete.The affinity of carbon monoxide and hemoglobin is 200 ~ 300 times higher than that of oxygen and hemoglobin, and it is easy to combine with hemoglobin to form carbon oxygen hemoglobin, so that hemoglobin loses the ability and function of carrying oxygen, resulting in hypoxia and asphyxia of the human body, which is what we often say carbon monoxide poisoning, also known as gas poisoning.So what are the conditions that lead to carbon monoxide poisoning?Two, the main situation of carbon monoxide poisoning the following situation will lead to a sudden increase in indoor carbon monoxide concentration, if the ventilation is poor, it is easy to happen carbon monoxide poisoning asphyxia accident:(1) directly use barrels and basins without smoke exhaust facilities to burn wood, coal, charcoal and coke for heating or the wood, coal, charcoal and coke in the furnace is too full of pressure, resulting in insufficient combustion, and the carbon monoxide generated can not be discharged outdoors;(2) When using liquefied petroleum gas or natural gas water heater shower, the smoke exhaust pipe is blocked or the smoke exhaust pipe is not strictly closed, carbon monoxide can not be discharged outdoors, resulting in carbon monoxide leakage in the indoor and accumulation;(3) when snow, wind, fog and temperature rise, outdoor pressure is low, indoor and outdoor temperature difference is small, smoke diffusion is blocked or back, leading to carbon monoxide accumulation in the indoor;(4) There is no smoke exhaust facility in the room with gas or charcoal barbecue, which leads to carbon monoxide gathering indoors.Three, where is prone to carbon monoxide poisoning?(a) burning charcoal burning wood, coal, charcoal, coke heating, charcoal barbecue, wood, coal, charcoal, coke and other prone to incomplete combustion, produce a lot of carbon monoxide, if the room is closed, poor ventilation, carbon monoxide poisoning is easy to occur.(two) most families use gas to install gas water heaters in the bath room, and some kitchen without smoke exhaust facilities, because of incomplete combustion of gas, if the time is too long, carbon monoxide is easy to accumulate, coupled with cold Windows, poor ventilation, resulting in poisoning.Still have individual small barbershop, the space is narrow, gas water heater was installed in the room, also easy to produce poisoning incident.(three) car exhaust some people like to sleep in the car with air conditioning on, while the car engine idling, gasoline combustion is not sufficient, will produce a lot of exhaust gas containing carbon monoxide, exhaust gas through the air conditioning into the car, causing poisoning.What are the signs and symptoms of carbon monoxide poisoning?1. Mild carbon monoxide poisoning includes headache, dizziness, palpitation, nausea, vomiting and other symptoms.2. In addition to the above symptoms, moderate and severe symptoms also include flushing on the face, cherry red lips, excessive sweating, rapid heart rate, restlessness and gradual coma.3, severe patients quickly into a coma, reflex disappearance, incontinence, cherry red face, high temperature, pupil to light reflex and corneal reflex retardation and other symptoms and even death.Carbon monoxide poisoning is also prone to central nervous sequelae.What are the emergency measures after carbon monoxide poisoning?If be in using stove warm or use gas water heater to bathe from time to time giddy, bosom frowsty symptom, should open door window as soon as possible, leave the spot.If you can’t stand, you can crawl on the ground to escape quickly, because carbon monoxide is lighter than air.When others are found to be poisoned by carbon monoxide, the following principles should be followed: 1. Rescue personnel should crawl into the scene.2. Open doors and Windows for ventilation, quickly transfer the patient to a ventilated and warm place to lie flat, and untie the collar and belt for smooth breathing.3. For patients in a coma, their head can be tilted to one side to prevent vomiting from being inhaled into the lungs and causing suffocation.4. If heartbeat breathing is weak or has stopped, cardiopulmonary resuscitation should be performed immediately.5. Call an ambulance at the same time and send the victim to a hospital with a high-pressure oxygen tank for rescue.After poisoning is serious and have coma process sober also must send a hospital to accept hyperbaric oxygen treatment, lest produce serious sequela, appear brain dysfunction.Six, carbon monoxide poisoning prevention measures (a) stove heating.1, absolutely can not use a bucket, basin or no smoke exhaust pipe stove in the indoor direct heating, coal is not directly placed in the bedroom, indoor fire heating to regular ventilation.2, the use of stove heating, before going to bed to check whether the furnace cover is tightly covered, wood, coal, charcoal, coke, etc. in the furnace is completely burned, must not seal the furnace heating.The smoke outlet of the smoke exhaust pipe should be installed with a bend, which should not face the windward side to prevent the backflow of smoke caused by strong wind.The interface of the smoke exhaust pipe should be firmly connected along the stubble (thick mouth down, thin mouth up) to prevent air leakage.Chimney and flue outlet should be checked and cleaned regularly to keep smoke exhaust pipe unblocked.We should pay close attention to weather changes, pay special attention to snow, wind, fog and temperature rise when the stove safety, do a good job of indoor ventilation, prevent wood, coal, charcoal, coke and other incomplete combustion of carbon monoxide and carbon monoxide flue gas back in the indoor accumulation.(2) use gas water heater.The proposal uses strong platoon type gas water heater, eliminate straight platoon type and flue type gas water heater, use fixed number of year exceeds 8 years water heater should change.Gas water heater should be installed in a well-ventilated place, never placed in the bathroom or bedroom.Check that the room window or exhaust fan is open and well ventilated before each use.In use, should open a window to maintain ventilation, wash bath time is not too long.When windy weather discovers the room of water heater to pour wind or the exhaust pipe of water heater appears to pour smoke phenomenon, should suspend use water heater.In use water heater flameout suddenly or give cold water suddenly, should close quickly, wait for professional personnel to check after reusing.Should often check whether the pipeline that joins gas water heater exists loosen, aging, damage to wait for a phenomenon, prevent air leakage strictly.(three) use gas cooker.Should check whether leak before ignition, when stove is not lit continuously, should open a window to ventilate, reignite later.Do not stay away from the use of people, strictly prevent overflow pot fire extinguish.After use, before going to bed, when going out, to check whether the stove switch and pipeline valve is closed, whether air leakage.(4) Other places.Started the car inside the garage or start do not sleep in the car after the car air conditioning, use the stove heating plastic greenhouses, wood, coal, charcoal, coke) cook food establishments, diesel generator power room, direct use of gas cooking or charcoal fire barbecue restaurant area and so on, should pay attention to indoor ventilation, to prevent carbon monoxide poisoning.(5) Carbon monoxide alarms should be installed in areas where carbon monoxide poisoning sources exist.(1) Carbon monoxide poisoning can only be caused by burning coal.Incomplete combustion of carbon containing substances such as wood, coal, charcoal, coke, gasoline, diesel oil, kerosene, liquefied petroleum gas, natural gas, etc., can produce a large amount of carbon monoxide.(two) indoor soot will not occur poisoning.Carbon monoxide is a colorless, odorless gas, and carbon monoxide poisoning often occurs unknowingly.(three) home heating, fire sealing with wet coal will not occur poisoning.Carbon monoxide is very insoluble in water, and water and gas can easily form water-gas mixture at high temperature, increasing the risk of poisoning.(four) there are gaps on the doors and Windows will not be poisoned.The proportion of carbon monoxide is smaller than air, and if the gap between doors and Windows is low, carbon monoxide is not easy to discharge.(five) Carbon monoxide poisoning patients rescued from nothing.Carbon monoxide poisoning may cause central nervous sequelae, so follow-up treatment must be adhered to to avoid sequelae.Chengdu Daily · Jinguan news Yang Shengtao reporter Tian Cheng Chentu provided by the city emergency management bureau editor Wang Jian proofreading Tian Li