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Fuming’s abacus is good, and there is a training session right now, but it is not for newcomers like Zhang Heng, but for the elderly who have worked in the nuclear power plant for a period of time. This is actually equivalent to an advanced training class and is included in the list. Of people are more likely to be promoted after the training.

Fuming did not say hello to the chief engineer of Zhang Heng's department, but when he got the list, he found that Ivan's name was also listed.

Fuming was taken aback. He was a little bit dumbfounded when he asked someone to ask about it. He didn't expect that he didn't mention it, but Zhang Heng directly found the leader of the department, and then pulled his tiger skin off. Many people already knew what Zhang Heng said during the interview, and he talked to Zhang Heng privately afterwards.

Fuming was originally meant to show his approachability and win people’s hearts, but he didn’t expect to be used by Zhang Heng instead, and the latter didn’t even say anything to die. He just hinted that the department head gave him his name. It is added. After all, Fuming, as the chief engineer of the nuclear power plant operation department, no department wants to offend him.

Even people who are not accustomed to him usually don't want to fight him on such trivial matters. There is only one training place, and no one even asks him for credit.This is why Fuming didn't know Zhang Heng was on the list until he got the list.

But this list will eventually need his approval.Fuming's pen paused on Ivan's name for a while, and finally moved to the lower right corner, where he wrote the two words agree, and signed his name.

Although Fuming is a little dissatisfied with Zhang Heng’s self-assertion, his mind to solicit Zhang Heng has not changed. It is one thing not to say hello. It is another thing to take the initiative to cross out Zhang Heng’s name. Completely forced to his opponent.So Fuming finally recognized it by pinching his nose.

Facts have proved that Zhang Heng, who has been baptized by the Black Sail Pirate Island, should not be too easy to deal with the factional struggle in a nuclear power plant. Even if there are ten Fuming, he will not be his opponent.

It only took Zhang Heng less than a year and a half to figure out the relevant physics knowledge, the design drawings and design principles of the reactor, and all the equipment circuits of the entire nuclear power plant, and in the second year of Chernobyl He also got the safety experiment plan designed by Fuming, and even watched the failure of the first safety experiment.

During the day, he worked at a nuclear power plant. In the evening, when he returned to his residence, he would continue to study Russian and Ukrainian with the hostess. In addition, Zhang Heng also took the time to go to the Kiev hospital for two rechecks, probably because he was young and strong enough, at least So far, my body is recovering pretty well, and no malignant tumor has been detected.

After Zhang Heng also practiced Ukrainian to a level where he could communicate normally, his language proficiency skills, which had been quiet, finally upgraded from lv2 to lv3.So far, including his native language, Zhang Heng has reached the level of daily communication in 11 languages.

Moreover, this parallel copy also allowed him to acquire another nuclear engineering skill, which is now at the lv2 level. Of course, Zhang Heng's biggest gain is to figure out the flaws in Fuming's safety experiment and reactor design.

It must be admitted that compared with the pressurized water reactors used in most countries in the world today, rmbk has natural defects at the beginning of its design. It sacrifices part of the safety in exchange for faster construction speed and more Low operating costs, refueling without shutting down, and production of military plutonium.

In the eyes of the people at the time, if there were any shortcomings, it was probably that the radioactivity of the rmbk reactor discharge was slightly larger, and it was not as clean as the VVER pressurized water reactor.

But in fact, the more serious problem lies in the design of the control rod. Gatlov once said that the control rod is used to regulate the nuclear fission reaction, because the boron that composes the control rod can absorb neutrons, which can also reduce the reactor Power, but the problem is that there is a small piece of graphite at the lower end of the control rod. The role of graphite as a neutron moderator is just the opposite of that of boron. It is used to decelerate fast neutrons into slow neutrons to increase reactor power.

Of course, the reason why the earlier designers designed this way was not to let the reactor operators feel the "surprise" brought by the reversal. The graphite at the bottom also has its effect, because the graphite reactor has a significant deceleration effect on neutrons, which can be appropriate Reduce the purity of uranium fuel, thereby saving costs.

From an economic point of view, this is not a problem, but the low-abundance uranium fuel is not stable enough during the reaction, especially when the reactor is running at low power. At this time, the graphite at the lower end of the control rod can be used to make the reactor. Get better control.

However, this design will bring potential risks. When the control rod is completely drawn out of the reactor and then plugged back in, it is graphite instead of boron that contacts the core first. At this time, the reaction power will not decrease but will increase. High, although the entire process takes a short time.

What surprised Zhang Heng was that according to the information he collected, before the accident at the Chernobyl nuclear power plant, other nuclear power plants had discovered the problem of the power first rising and then falling after the control rod was inserted into the reactor, and reported it to Related departments, but because it did not cause any safety incidents, it did not get enough attention.

On the other hand, it should also be recognized that the designers of the rmbk reactor have made a lot of efforts to ensure the safety of the reactor. For example, the safety manual clearly stipulates that during the operation of the reactor, the core must ensure that at least 28 to 30 are controlled. The stick is in the inserted state.

In addition, the reactor is also equipped with an emergency core cooling system. When the cavitation coefficient in the reactor increases, the water tank of the emergency core cooling system will be opened immediately and injected into the reactor. However, Fuming aims to prevent cooling water from entering the high temperature reactor. , Causing thermal shock, and disconnecting this device that can save lives at critical moments from the multiple forced circulation loops in the experiment.

And after seeing Fuming's first failed experiment, Zhang Heng was almost certain that on the night of the explosion, the people in the central control room did not completely follow the safety manual as they said before.

The situation on the night of the explosion was also much more complicated than the first experiment, because the safety experiment failed to proceed as planned. The reactor had been operating at low power for quite some time before, and fell into the iodine pit in order to climb out. In the iodine pit, the operator pulled out too many control rods, which eventually led to a rapid increase in reactor power. After that, the safety system was cut off and could not take effect immediately. The people in the control room had to hurriedly insert all the control rods back into the core. , Want to suppress the fission reaction.

Unexpectedly, the design flaw of the trigger rate reactor eventually led to the entire nuclear power plant GG.