Jimu News Reporter Zhao Delong Trainee Reporter Li Yang
Video clip He Ting
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On the afternoon of October 24, above the Nanjing General Road, accompanied by a mushroom cloud rising, a loud noise broke the tranquility of Nanjing University of Aeronautics and Astronautics.
The laboratory of Nanjing University of Aeronautics and Astronautics deflagration
The news that the laboratory of the school's School of Materials Science and Technology has exploded, killing 2 and injuring 9 is heart-wrenching.
Thick smoke came out of the lab, video screenshots
Some of the victims of this accident are the only son in the family and one of the few graduate students in the village. There are also graduates of the third year of graduate school, who have found a job, but they were seriously injured in the explosion and are still lying in the intensive care unit.
Afterwards, the experimental building where the explosion occurred has been closed. In recent years, the frequent explosion accidents in college laboratories have repeatedly sounded the alarm bell, and how to make students who are immersed in experiments have no risk of life and make the laboratory no longer become an "accident pressure cooker" is a problem that colleges and universities should reflect on.
Three booms before and after
The deflagration accident occurred on the third floor of the laboratory of the School of Materials Science and Technology of Nanjing University of Aeronautics and Astronautics.
Nanjing University of Aeronautics and Astronautics
Yin Yun is a student in the school's School of Materials Science and Technology. On the day of the incident, she was in a building next to her.
Yin Yun remembered that when she heard the first muffled sound, she did not pay attention at the time, and the sound was very small; then she heard the second sound, which was louder and felt a tremor, and she and her classmates began to run, and went downstairs to see smoke coming out of the third floor.
As fire trucks and ambulances continued to drive into the campus, posts about "Nanjing University of Aeronautics and Astronautics laboratory explosion" began to appear on the Internet.
Some students at the school posted that some people witnessed the huge mushroom cloud that day; some people witnessed the ambulance pulling away three cars of people; some people saw some classmates running out of the building with laptops in their hands...
The scene of the incident
But no one knew what was going on. Until about 7 o'clock that night, the Nanjing Fire Department reported that an experimental building in the General Road Community of Nanjing University of Aeronautics and Astronautics had exploded, causing a total of 2 deaths and 9 injuries.
Medical staff treat injured students
A video of several people watering on the floor of the incident went viral on the Internet. At the end of the video, accompanied by another explosion, several people in the picture are instantly engulfed in flames...
Yin Yun later recalled that she heard a total of three explosions that day. The explosion that happened in the watering video should have been the third sound she heard.
Media reports explain the reasons for the watering of the above-mentioned online video. Several people watered the iron railing of the corridor to cool down, with the intention of rescuing trapped people in the laboratory so that they could escape along the iron railing.
Some students of the school said that at the time of the incident, he was in the next building, and he learned afterwards that the 4 people in the video were not in serious trouble, and the classmate who watered it had been treated and had now returned to school. In the briefing, the two students who were killed were trapped in the laboratory at the time and still could not run out.
One of the few graduate students in the village
The news of 2 deaths and 9 injuries is heart-wrenching.
At 10:24 p.m. on the night of the incident, a search post initiated by the administrator of Tieba appeared in the Tieba of Nanjing University of Aeronautics and Astronautics.
"Zhai Junpeng, Yan San, Materials College, looking for someone" "Liu Cheng, Yan San, engaged in materials, so far the phone can not be contacted, WeChat has not replied"... The mood of searching for people in Tieba is very urgent, but there is very little definite news.
Among them, Wu Ke's name has been mentioned many times. The Tieba administrator left a sigh under the searcher's post, and three candles.
On October 25, Jimu News reporters came to Nanjing University of Aeronautics and Astronautics on General Road in Nanjing, and due to the epidemic, the campus was closed, and only many students at the entrance of the school took express delivery.
Some students introduced that after the explosion accident, the school has closed the experimental building, and everyone is more sad, and they are reluctant to mention this matter to each other.
The Jimu News reporter learned from the Jiangning Funeral Home that the remains of the victims of the deflagration accident at Nanjing University of Aeronautics and Astronautics had been received, but it was not Wu Ke.
Mr. Wang, a friend of Wu Ke's father, told Jimu News that on October 24, after Wu Ke's parents received the news of the child's accident, accompanied by relatives and friends, they rushed from Henan to Nanjing that night.
"I heard a relative and friend who went with me say that the child is gone. Wu Ke's hometown is in rural Henan, his father is mainly farming, occasionally doing odd jobs, his mother is a teacher, and his grandmother just passed away last year. Mr. Wang said.
"He is the only son in the family and his grades are very good." Mr. Wang regretted that Wu Ke was one of the few graduate students in the village, nearly one meter and eight tall, and usually did not speak much, but when he saw people greeting, his smile was often on his face.
Public information shows that Wu Ke is a 2020 master's degree in materials and chemical engineering. At the end of 2020, he won the first prize of the Graduate Academic Scholarship of Nanjing University of Aeronautics and Astronautics, with a prize of 10,000 yuan.
On the afternoon of October 27, a classmate of Wu Ke told Jimu News that he sent a message to Wu's father that day: "Uncle Wu, how is Wu Ke's current situation, we are all worried about him." ”
Wu Ke's father replied: "Wu Ke is gone." ”
The classmate said that when he learned the news, his mood could not be calmed for a long time, and he knew that Wu Ke was the only son in the family. I can't imagine how heartbroken the father of the lost child was at the end of the text message.
Seriously injured people in the ICU
In the accident, there is also a missing student of the school who worries the hearts of many people, he is Liu Cheng, a 2019 materials engineering student.
On October 26, a reporter from Jimu News learned from the Intensive Care Department of Nanjing Drum Tower Hospital that Liu Cheng was being treated in the department.
Xiong Yize, who had reviewed the examination with Liu Cheng, introduced to the Jimu News reporter that Liu Cheng had already implemented the work in the third year of research this year.
"I didn't expect such a thing to happen." Xiong Yize said that on October 24, he learned that the laboratory of China Southern Airlines had exploded, and he was still in the group that night to ask Liu Cheng if there was anything wrong. But Liu Cheng has not replied, and he has not answered the phone.
Xiong Yize recalled, and afterwards he carefully read the news report and found that the accident occurred in the school's materials college. At this time, he had an ominous premonition in his heart, and finally confirmed from his friends that it was Liu Cheng's research group that had an accident.
"Liu Cheng is 26 years old this year, he is a very good person, after learning of his accident, his high school classmates and college classmates are looking for him." Xiong Yize said that because there is no accurate news, a few days ago, everyone posted on various platforms to find people, but there are many opinions and no accurate information. Now that he is being treated in the hospital, his parents have also rushed to the hospital to take care of him, hoping that Liu Cheng will recover as soon as possible.
Jimu News had previously reported that there was also a parent of an Anhui student, who was working in Beijing at the time of the incident, and at the beginning of receiving the news, he thought it was a fraud, and after reconfirming the news, he rushed from Beijing to Nanjing overnight.
In addition to Liu Cheng, there is another injured person who is also treated in the intensive care unit of Nanjing Drum Tower Hospital. On October 26, Jimu News reporter went to Nanjing Drum Tower Hospital, and the medical staff of the Department of Critical Care Medicine introduced that due to the prevention and control of the epidemic, the department was closed and could not get more information about the condition of the injured.
On the afternoon of October 25, Building 6 of Nanjing First Hospital, a number of medical staff of Nanjing First Hospital confirmed to Jimu News that there are still 2 seriously injured patients in the ICU for rescue. At the same time, the reporter learned that earlier, another 6 less injured personnel were sent to Nanjing Jiangning Hospital for treatment.
Nanjing First Hospital
Laboratory safety concerns
According to insiders, in the deflagration accident of Nanjing University of Aeronautics and Astronautics, the tutor of the students killed was suspected to be a professor surnamed Wang of the College of Materials Science and Technology. Jimu News reporter called Professor Wang, and his response said that it was inconvenient to reply, and the school issued a unified message.
A student at China Southern Airlines University revealed that there was a large amount of magnesium aluminum powder and acetone in the laboratory where the explosion occurred, Professor Wang's project team was more difficult, and the students came to the laboratory on weekends to do experiments, and the experimental process did not know what reason, ignited the magnesium aluminum alloy, and the early combustion explosion. Many students in the lab were on fire, some ran out of the lab, some were trapped inside or climbed onto balconies. The rear open flame ignites the volatile acetone in the air, causing a final, more violent explosion.
The student believes that the lessons of this deflagration accident are very painful, and the occurrence of safety accidents indicates that there may be some loopholes in laboratory safety management or student experimental operations.
A netizen who just graduated from China Southern Airlines University in April this year introduced that the projects of the School of Materials Science and Technology of the university are basically related to aerospace, and some flammable chemicals and magnesium powder aluminum powder are often involved in experiments. The netizen also said, "The laboratory environment is like that, a teacher has one or two laboratories, naturally for the convenience of (the materials) are piled together, once the explosion occurs, it is very likely that there will be an after-explosion."
At the entrance of Nanjing University of Aeronautics and Astronautics
Some college students told Jimu News that before entering the laboratory, students generally have to receive safety training, learn the relevant rules and regulations, and pass the laboratory safety examination to obtain "access qualifications". During the experiment, the tutor will point out the risk of the experiment to the students, and inform the emergency disposal plan, and the more dangerous operation will generally be accompanied by the experimental teacher.
Professor Zhang Hua of the School of Materials and Metallurgy of Wuhan University of Science and Technology introduced that the safe operation of the laboratory should be carried out by the school to formulate a strict normative system and clarify the responsibility to the people. It is also crucial to organize targeted safety training in daily life and improve students' self-help ability.
Zhang Hua introduced that the line problems caused by high temperatures, chemical hazards, radiation of materials and equipment, toxic gases... They are all common types of accidents in materials laboratories. In addition, there is also a relatively dangerous dust deflagration in the laboratory, such accidents are combustible dust mixed with air, encounter fire points, resulting in rapid violent combustion, the harm is greater.
Yin Yun, a student at Nanjing University of Aeronautics and Astronautics, said that there is indeed a certain danger in chemical experiments, especially the need for operational norms, after this incident, everyone is more sentimental, the experimental building of their hospital has been closed, and she has been staying in the dormitory for several days.
Since the beginning of this year, there have been at least 3 explosion accidents in chemical laboratories in colleges and universities. On March 31, a graduate student died on the spot due to an explosion in the laboratory of the Institute of Chemistry of the Chinese Academy of Sciences due to the high temperature and high pressure of the reactor; on July 13, a fire broke out in a chemistry laboratory of the Southern University of Science and Technology, and a postdoctoral researcher's hair caught fire, which was finally diagnosed as a minor injury; on July 27, a doctoral student in the laboratory of the School of Pharmacy of Sun Yat-sen University exploded while cleaning and flushing the unknown white solid left in the flask of the previous graduate, and the glass fragment pierced the artery blood vessel in the student's arm.
After the explosion accident of China Southern Airlines, many netizens observed a moment of silence for the victims on the Internet. One netizen said that it is difficult for her not to empathize with these master's and doctoral students, they have very different personalities, but they have one thing in common: they all have some cute book anger, which sometimes makes them look "clumsy", but at the same time let them get a rare innocence.
(Except for Zhang Hua, the characters in the text are pseudonyms)
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