With Feng Xiaochen's original intention, he really didn't want Du Xiaodi to go out in person, he just asked Du Xiaodi if he could find a few knowledgeable people at the University of Technology to go to Mexico to help diagnose whether the accident had anything to do with the welding operations of Chinese workers. When Du Xiaodi heard about this, she immediately said that she could go, and this case of a major accident caused by a fracture at the weld site is a great inspiration for scientific research, and she is very interested in it.

Du Xiaodi took the initiative to ask, of course Feng Xiaochen didn't say anything. In this era, Chinese people yearn for European and American countries, but they are somewhat afraid of places like Latin America and Africa, thinking that these places may be dirty and messy. Feng Xiaochen is a human being in two lives, so naturally he will not feel this way, he feels that Mexico is also an ordinary place, Du Xiaodi can go if he wants, and it is a good thing to open his eyes.

In this way, after Du Xiaodi and Wang Ruidong converged, they took a flight and came to Perrault, Mexico, via the United States. In order not to make the Japanese side suspicious, she specially asked Wang Ruidong to find her a Quanfu company's work clothes to change into, and then walked into the construction site as a welder of Quanfu Company.

"What Assistant Feng means is to find out the cause of the collapse of the fractionation tower first. If the responsibility lies in our improper welding operation, then we do not have to shirk the responsibility, and we just need to seriously summarize the lessons learned. But if the responsibility is not on our side, and we cannot allow the Japanese to pour dirty water on us, this is not only a matter involving a few of your masters, nor is it just a matter of Quanfu Company, but a matter of reputation of the entire 'Made in China', and this kind of principle cannot be compromised. ”

Du Xiaodi said to everyone. When mentioning Feng Xiaochen, she used the same title as everyone else, calling him "Assistant Feng". This is actually not the first time, in the past few years, Du Xiaodi has participated in the work of the equipment industry company many times, and in front of others, she also calls Feng Xiaochen like this.

"When it comes to responsibility, I can't tell. Bi Jianxin said, "According to common sense, the welding of the base of this fractionation column is not a very complicated electric welding, I have been doing it all my life, and it is impossible to make a mistake in such a place." After the fractionation column collapsed, I went to check the records and went to the scene to see it, and I didn't find anything wrong. However, I also know that I have a shallow vision, now that Master Du is here, it is good that your skills, I have always been convinced, I will accompany you to the scene tomorrow to have a look, maybe you can find something wrong. ”

Master Bi was polite. Du Xiaodi said with a smile, "It's good if you call me Xiao Du." I don't dare to say this in front of you, or my master will have to break my legs. ”

"Haha, Xiao Du is still the same as before, his skills are good, and he is humble, which is really good. Bi Jianxin changed his words in a kind manner, and praised Du Xiaodi again in the tone of an elder.

"Thank you, Master Bi, for the compliment. Du Xiaodi said politely, and then continued: "Over there, I will definitely go there, but I'm afraid it's not enough to just look at it, it's best to try a few points of soldering to see if it's our operation is wrong, or the process specifications set by the Japanese are wrong." ”

"It's easy. Liang Chen said, "Naohiro Iwasaki just gave us a work order, and asked us to arrange a few people to clean up the site and repair those smashed structures. At that time, Master Du will go with everyone, and electric welding and gas cutting will be used on the spot, you can try it casually, anyway, it is also a damaged thing, and the Japanese will not care how we do it. ”

"That's great, I'm worried that the Japanese won't allow us to touch those structures. Du Xiaodi said.

Wang Ruidong interjected on the side: "Tatsuko, you just said that the Japanese asked us to clean up the scene, is there a conclusion about the accident?"

Liang Chen shook his head and said, "I haven't heard of this. I see that the Japanese named Tian Xiong has been wandering around the construction site for the past few days, and his eyes are red, so I guess there is no conclusion yet. ”

"If there is no conclusion, they will clean up the scene, and if they throw dirty water on us as Master Du said, we will not be able to wash it by jumping into the Yellow River. Wang Ruidong reminded.

"However, after cleaning up the scene, they also have no evidence that it is our responsibility. Liang Chen is a construction worker, and he has some experience in things like evidence collection, he retorted: "If they want to say that it is our responsibility, they also need to come up with evidence." Now they let us clean up the scene, which is equivalent to destroying the evidence, and we don't have to be afraid of them in a lawsuit. ”

"Makes sense. Wang Ruidong was a little puzzled, "Could it be that they don't plan to make trouble for us?"

"Well, let's wait until we see the scene. Du Xiaodi said, "This kind of cleaning up the scene, I believe that the Japanese can't count the working hours, let's slow down the progress a little, drag it out for a few days, I will hurry up and collect evidence." When we grasp the real cause of the accident, the Japanese will not be able to make us carry the blame. ”

"Yes, let's listen to Xiao Du, slow down the progress a little. Bi Jianxin echoed.

Liang Chen took Du Xiaodi and several other new workers to meet Naohiro Iwasaki. Naohiro Iwasaki conducted a technical test for the new workers according to the rules, and then issued a certificate of employment to everyone. Du Xiaodi's welding technology is the best among the people, and has won the praise of Naohiro Iwasaki. When he heard that Du Xiaodi had been trained in Japan and knew some Japanese, Naohiro Iwasaki complained to Liang Chen that Quanfu Company was too inauthentic, and such an excellent technician actually held it in his hands and didn't send it earlier. In this regard, Liang Chen could only laugh.

The next day, Liang Chen took Bi Jianxin and Du Xiaodi to the collapsed fractionation tower and began to clean up the tower. Tian Xiongzhe has also conducted a comprehensive inspection of the accident scene, and the places where photos and samples should be taken have been completed, and there is no point in keeping this scene. Regardless of the final conclusion, the installation work will continue. The collapsed fractionation tower obviously could no longer be used, and a new fractionation tower needed to be sent from Japan, which was still installed in the same place, and before that, the damaged structure had to be dismantled, which was the task assigned by Naohiro Iwasaki to Liang Chen.

The Chinese workers did not know about the nonsense that Uchida had made at the press conference, and they did not usually read newspapers, let alone Spanish-language newspapers, so they did not know anything about what was said in the newspapers. Uchida spoke of the Chinese workers as very unbearable in front of the reporters, but in the end, he had to rely on these Chinese workers to do his work. Anyway, the reporters would not have come to the construction site to verify it, and the workers did not have the opportunity to contact the reporters.

The Japanese side has no taboos about letting Chinese workers clean up the site. In the eyes of Tetsuya Tao, Naohiro Iwasaki and others, these Chinese workers are a little more skilled in operation, and they must not understand other things, and there is nothing to keep secret from them on the spot. You know, even Tian Xiongzhe didn't find out what the problem was at the scene, what kind of reputation can these workers see?

"Xiao Du, look at it, this is where we weld. ”

When he came to the scene, Bi Jianxin took Du Xiaodi to the place where the base was broken and introduced her. The fracture of the base started with one weld and gradually spread to other places, culminating in a large crack in the weld, which led to the tipping of the fractionation column. It was not unreasonable for them to suspect that the welding operation was wrong from the beginning, but when they checked the situation of the crack, they found that this judgment was untenable. Because there is no virtual welding, false welding and the like on the welding point, the groove shape, welding depth and welding consumables selection are all done in accordance with the requirements of the process specifications, and the workers do not have any violation of the operation requirements.

Industrial design is supported by theory, what kind of weight will produce how much pressure and tension under what wind conditions, how much force a certain type of steel can withstand, which kind of solder with which steel, what kind of process can produce what kind of effect when welding, there are mature theoretical calculation models. As long as the designer sets the parameters, he can calculate all kinds of data.

The difference between the old industrial powers and the developing countries lies in a large part in the mastery of these computational models, which they have spent a lot of money and time to build up with theory and experiment. If China wants to catch up with the world's advanced level, then I'm sorry, you have to make up all these courses before you are qualified to talk about this topic. To make up for the lessons, the shortcut is to directly introduce technology, buy and eat the models and experience accumulated by others for decades, and then digest and absorb them into their own experience. But some technology people will not sell, even if you want to sell, the price is unbearable for you, at this time, you can only explore it yourself, and also use time and money to smash.

The chemical equipment that Iketani Manufacturing has been engaged in for decades, and the analysis of the stress structure of a fractionation column is not a problem at all. But it is such a simple question, but Tian Xiongzhe, who has a group of technical elites, is also at a loss, which is also a bizarre thing.

Even the Japanese can't figure it out, Bi Jianxin doesn't think Du Xiaodi can figure it out. In Bi Jianxin's mind, Du Xiaodi came to see the scene and confirmed that there were no mistakes in everyone's welding operations, which was enough. As for why the welding completed according to the process requirements will have such a large area of cracking, it is not something that the Chinese should care about, or keep it for Tian Xiongzhe to have a headache.

Du Xiaodi could more or less guess Bi Jianxin's thoughts, and she didn't plan to explain anything. She took the process drawings that Bi Jianxin gave her and looked at them, and asked:

"Master Bi, the drawings require you to use No. 74 welding wire for welding, you are not mistaken, right?"