Interviewed expert
Jia Dacheng, senior emergency expert at Beijing Emergency Center
Zou Xiaofang, director of the burn department of the Air Force General Hospital
Lu Jianguo, Director of Comprehensive Inspection Department, National Household Appliance Quality Supervision and Inspection Center, China Household Electrical Appliances Research Institute
Hidden danger one: overdue gas tank
Jia Dacheng, a senior emergency expert at the Beijing Emergency Center, told the Life Times that the personal injury caused by gas tank explosions is the most common and the injury is often heavier. There are four reasons why gas tanks generally explode:
First, the gas tank is accidentally heated, and the contained gas expands rapidly, and the pressure inside the tank is too large to cause an explosion.
Second, the inflation is excessive. In general, when filling a gas tank, it should not exceed 85% of its volume. For example, if the tank is exposed to sunlight and baked, the risk of explosion will increase significantly.
Third, in the winter, some residents will use hot water to burn the bottom of the tank in order to make the fire more prosperous. This is easy to cause an explosion, which is also the reason for the frequent explosion of gas tanks in winter.
Fourth, gas tanks that are out of service, lack of maintenance and repair, will explode if they are exposed to high temperatures, pressure, and collision. Jia Dacheng pointed out that the use of qualified gas tanks produced by regular manufacturers, regular inspection and maintenance, refusal to overdue service, and avoiding misuse can effectively prevent gas tank explosions. If you smell gas odor during cooking, you should be vigilant and suspend use.
Jia Dacheng said that at present, the gas pipelines used by many households are relatively safe, but it is best to install alarms and cooperate with the staff to regularly check for leaks, so as to avoid excessive concentration of carbon monoxide in the room due to air leakage. explosion.
Hidden danger 2: Pressure cooker that is not often cleaned
"Only heard a loud noise, the lid was blown up, and the hot food splashed..." Zou Xiaofang said that common patients came to see a doctor because of the explosion of the pressure cooker. The scene of the explosion described by the patient was horrifying. There are two main reasons for the explosion of the pressure cooker: first, it exceeds the safe use period; second, it does not pay attention to cleaning. Once the pressure limiting valve and the float valve are blocked, the pressure inside the pot will be too high and will explode.
Therefore, Zou Xiaofang suggested that whether it is a traditional pressure cooker or an electric pressure cooker, the service life is 6-8 years. If it is found that the deformation of the pot body, rust, etc., it should be abandoned immediately. Before use, the pressure limiting valve and the float valve must be inspected. If there is any blockage, clean it in time; the food in the pot should not be packed too much. When the cover is closed, pay attention to whether it is buckled in place. After the fire, wait until the pot is fully cooled before taking the lower limit. Pressure valve, open cover.
Hidden danger three: lighter in the hot car
Many smokers carry a lighter with them. In the hot summer, if you put a lighter in the car, it may explode and even ignite the entire car. Jia Dacheng explained that under the sun, the temperature inside the car will reach above 60 °C. The liquid butane contained in the lighter will expand by heat, and the outer casing will not explode if it cannot withstand the internal pressure.
The fire department has experimented: under the scorching sun, put the lighter in the car and it will explode after 12 minutes. At the moment of the explosion, the lighter sprayed a large amount of gas, and the plastic casing was blown into pieces and scattered everywhere, which was very dangerous.
Experts pointed out that the lighter should not be placed in the car; the lighter at home is also best placed in the shade. In addition, perfumes, batteries, toilet water, charging treasures, carbonated drinks and other products that are easy to explode at high temperatures are not placed in the car.
Hidden danger four: microwave oven used to boil water
Lu Jianguo told reporters that it is not possible to overheat the water with a microwave oven. Because the water does not flow when heated by microwaves, but the temperature rises, it may exceed the boiling point but it does not open. But when you pick up the water cup, a little movement can cause bumps and even explosions. When heating the liquid, the time should not be too long and it should be controlled within 2 minutes.
It should be noted that the microwave oven is heated from the inside to the outside. Eggs, quail eggs, crispy sausages, unpeeled potatoes and other foods like “wearing clothes†are internally swelled during heating, while the outer shell blocks gas expansion. It will explode. When using a microwave to heat this type of food, it's best to make a hole and poke a hole, which is good for heat.
Hidden danger five: hot water bag that is too long
In the cold winter, the warm hot water bottle is the "hand treasure" of many people, but if you don't pay attention, it may explode and hurt people. Zou Xiaofang told reporters that the common cause of burns caused by hot water bottle explosion is that after pouring hot water, the hot water bottle expands rapidly. If the hot water bottle itself is relatively old, it is more likely to rupture and explode.
Experts suggest that the hot water bottle should be replaced after two or three years of use. If it is found that there is a slight crack on the surface, it must be thrown away decisively. In use, it is best not to pour boiling water, the water temperature can be up and down 50 ° C, it is better to warm and not hot. The hot water bottle can be filled to 2/3. After filling, the air should be drained and the lid should be tightened.
Hidden danger six: electric heating bag without logo
Electric heating bags are more convenient than hot water bottles and are therefore favored by more people. However, explosions and burns caused by improper use of electric heating bags are not uncommon. Lu Jianguo told reporters that due to different heating elements, electric heating bags can be divided into electrode type, electric heating tube type and flexible heating wire type.
Electrode-type electric heating bags are the most dangerous, and have been banned by the state because of the frequent explosions, but there are still unscrupulous merchants for sale. Electric heating type electric heating bags generally do not explode, but the hand feel is not good, and the life is short, about one year. The flexible heating wire electric heating bag is comfortable to wear and has a long service life. It is the first choice for purchase.
Experts remind that consumers can identify electric heating bags by kneading. If the bag body is soft, it is a flexible heating wire type; if it is pinched to a hard block or a hard object, it is an electrode type or an electric heating tube type. I suggest that you must buy regular manufacturers products, do not buy cheap "three no" products.
Hidden danger seven: squeezed charging treasure
Going out and traveling with a charging treasure can avoid a lot of "power outage" troubles. However, the AQSIQ once conducted quality monitoring on the domestic charging treasure market, and found that all charging treasures have more or less safety risks. Some products suffer from external influences such as extrusion and impact, and internal short circuits may occur, resulting in spontaneous combustion or explosion.
Lu Jianguo reminds everyone to pay attention when purchasing the charging treasure: First, try to buy in the formal channels, do not buy unbranded models, no manufacturers, no electrical parameter identification and no warning instructions; secondly, carefully Check the outer casing, the inferior product work rough; again, when the temperature of the charging treasure is abnormally high, it should be quickly placed in a container with certain fireproof and explosion-proof capacity, away from the crowd.
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