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As a student studying Computer and electronics, I had a lot to do with chemistry, so I heard of some accidents with my own eyes.
I have seen only one accident with my own eyes. The impact scope is only a few meters. At noon, I was talking to my mentor, and there was a burst. We both rushed to the door at the same time, and I was close to the door. Hesitated, and I said: you first.
This is a classic joke, and everyone will laugh at it. However, the true implication of the story is not that I am a student who is putting his mentor in front of him when he is in danger. In the face of accidents and dangers, experts should be obeyed, and only one expert should be generated at the site. The mentor is an expert, so he should be ahead.
At that time, some people were confused. When they poured the residual liquid, they poured the acid into the liquid bottle. Reaction to generate heat and gas, accumulate until noon when no one finally blow up the bottle. The bottle is broken and the glass on the door is split. There is no one next to it. This is lucky.
In some accidents, the consequences of disobedience to experts are much more serious. An accident on the Internet. It seems that concentrated sulfuric acid has been sprayed in the workshop. The guy in charge shouted that everyone had taken off their clothes and immediately drenched the water. Some of the women who were sprayed were shy and ran to the bathroom. The results of this journey were very serious. I forgot whether it was a deep burn or a desperate attempt.
In the past, some students asked "What should they pay attention to?" and some students asked nothing if they were bold. As usual, I will repeat what my mentor said to me: do not touch anything.
"Do not touch anything", there is a negative example. When Guan was programming, he had nothing to do with a glass tube. Bao Shidi had a quiet tone. "Xiaoguan, do you know what was installed in the glass tube? "Are cyanide. The idea of computer learning is, how can they do this? How can this stuff be littered everywhere? The problem is that the world is like this. They will be responsible for the consequences after they are thrown away. It is like a red-light driver, but the pain is still borne by you.
"Do not touch anything", following this principle, when I use nitrogen to blow ash, I ask other students to open the valve for me. More than one person told me that this stuff is very simple to use. You can make it as easy as you twist it. Every time I make an honest request, you can fix it for me, and don't leave. I will close it for me later. Some people have asked how difficult it is. My answer is, the most terrible thing is that one day I thought I had learned how to unscrew the pure oxygen valve as nitrogen. The pure oxygen gas is sprayed on a diesel fire, which can cause fire and explosion. However, I have no ability to identify oxygen and nitrogen. Some may have said, what's the problem? Isn't the color of the gas cylinder enough? It's easy to say. I have seen green bottles. We should say that chlorine should be installed, and some groups have nitrogen in them-this may not be the case, but since there are such confused people, god knows they won't pack chlorine in a nitrogen bottle.
Low-level errors such as gas anti-installation may make people think that they will not happen at all. However, my mentor is a living victim. He coughs Kaka every winter, just like an old man. That's because when he was young, he was doing his experiments. Some people shut down the ventilated kitchen, and then the tutor's respiratory tract was corroded by acidic gases. The doctor said that it cannot be cured and can only be mitigated. Therefore, pig-like teammates always exist. They are responsible for such matters. Don't touch things you don't understand or don't know.
Not only do you not touch anything, but if the person next to you is doing experiments, you 'd better stay away. A group has a sister-in-law who is splashed with ammonia water from the younger brother. Most of the students have studied chemistry in junior and senior high school. They only know that the smell of ammonia is bad, that is, the smell of the toilet in summer. They may not know that it is corrosive. Fortunately, there is not much ammonia water on the chin. How far can my chin be from my eyes.
This is a visible danger. The real danger is what you cannot see, especially what you think you can see. Sherlock Holmes said, people can only see what they want to see. I tried to mark the prism and thought of hydrofluoric acid. High school chemistry, hydrofluoric acid can corrode glass. I told my mentor How to Apply wax to the glass, how to apply a knife, how to apply hydrofluoric acid to the printing, or soak the glass in hydrofluoric acid. After hearing this, the tutor thought for a while and said, "Who is that?", you should go and complete it. Xiao Yang won't do it. I'm not satisfied yet. I thought, isn't hydrofluoric acid Weak Acid? What is it? After many years, I read the post on the Internet, the famous big collection of chemical accidents. It said that hydrofluoric acid will enter the human body through the skin, replace calcium in the bones, and walk around, because the chemistry is so lively, therefore, it cannot be cleared. The skin will always be corrupted and never be cured. The development of medicine makes many people think that this small disease is nothing. This illusion ignores two facts. One is that this disease is rarely seen in medicine, the other is that the concentration is different, and the chemical properties may vary greatly. In our daily life, we cannot see high-concentration dangerous goods at all. Therefore, we may feel that the same is true for experiments and production.
Experiments are completely different from production, so it is very important to follow instructions and principles and may be related to life. I was asked to wear a safety helmet and long-sleeved overalls when I went to the steel mill. Hot in the steel factory. When a guy in the same row was sweating, he immediately picked the Security helmet and was scolded by his eldest brother. The guy later took off his long-sleeved clothes. After coming out of the workshop, his arm seemed to have been shining by the sea for half a month. I can see why I have to wear long sleeves. I am so bold that I strongly recommend that you do not want to do this project.
I just heard a younger brother say the story of one of his classmates. 500l what kettle distillation decompression explosion, this classmate hurt. On that day, he wore an explosion-proof clothing and a mask. The explosion-proof clothing was blown up, and his chest and arm were scratched by glass. If there is no protection, the consequences can be imagined.
It is difficult to conduct experiments all day long, so it is always much safer to follow the principles and rules. The mentor also said that when a buddy of Jilin University was confused, the valve on the high-pressure bottle stopped and dumped the gas cylinder and squatted in front of it. I thought something was wrong, and then I hit the gas cylinder. The System flew out and embedded the opposite wall. If he squatted in front of him at the time, he was probably knocked out by the valve.
When you are so careful that you forget the rules, you are so careful that some of your teammates become tired of yourself. In the event of a lab accident, the tutor has guiding principles. The instructor said that if you see the fire, you should not care about anything, do not think about saving your classmates to save the equipment to save the information, and there is no value for anything, run.
So I remember the two principles of lab security: Don't touch anything; catch fire and run.
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