Chapter 1143

"Talk about what happened this morning."

After several questions, besonova gradually entered the main topic.

Jiateluofu subconsciously looked at the three players not far away. He had already seen that the expert group was headed by the three people over there. They were standing at the other end of the room as if they were acting as a jury. They exchanged opinions from time to time. However, their voice was very small. In addition, there was a distance between the two sides, and jiateluofu didn't know them What are you talking about.

So the Deputy Engineer can only take back his own eyes, thinking back to a few hours ago.

"In the early morning of the 26th, we were conducting a safety experiment." "You must have been very clear about the content of the experiment, because in January today, director buluhanov reported the test program to the Hydropower Engineering Research Institute..." gatilov recalled

However, as soon as he said this, he was rudely interrupted by besonova, "Comrade gatilov, you just need to tell us everything in detail and accurately. As for what we already know and what we don't know, don't bother you. In addition, if possible, please describe the principle involved clearly, and Dr. yevlem also hopes to be able to Understand the course of the accident. "

"All right."

Although the statement of besonova made gatlov feel a little strange, and he didn't understand why the experts of acute radiation sickness should also listen to the accident analysis, he agreed, sorted out his ideas, and continued, "in a word, we have a safety experiment to do. The time was originally arranged on April 25, before the shutdown and maintenance of the reactor, you know, the reactor general manager It needs regular maintenance, and we can do a very simple safety experiment by taking this opportunity.

"The graphite moderated boiling water reactor is used in Chernobyl. Under the action of electricity, the water pump of the nuclear power plant can continuously pour cold water into the reactor, generate steam to drive the power turbine to generate electricity, and at the same time bring high-temperature waste water away from the reactor to ensure that the core will not be destroyed. I believe you can see how important the water pump plays in this process. We need to do everything possible to ensure the normal operation of the water pump.

"In an emergency, even if all the power in the nuclear power plant is cut off, we still have a standby diesel generator to supply power to the feed water pump, but the start-up of the diesel generator takes a short period of time, that is to say, we have to keep the pump running in this short period of time."

Jatrov tried to be detailed enough to make sure that Dr. yevreim, a layman, understood.

"The purpose of this safety experiment is to solve this problem. We consider using the inertia of the steam turbine, because when the power is cut off, the steam is still generated and the steam turbine is still running. In this way, we can generate electricity, which can help us tide over the difficulties.

"At 1:00 p.m., we reduced the power of No. 4 reactor to 1600 MW according to the original plan, shut down a steam turbine, and at 2:00 p.m., we disconnected the emergency core cooling system and the multiple forced circulation circuit to prepare for the safety experiment designed by chief engineer fuming. But at this time, we received a call from Kiev, saying that there was a small power supply there There was an accident at the nuclear power station. Kiev is now short of electricity. We are required to postpone the shutdown of the reactor.

"What can I do? We had to suspend the experiment, "gatilov said," and I went home to sleep for a few hours at this time. When I came back, it was already 11 p.m., and only an hour ago, I received permission to continue to reduce the power. So I contacted Yuri tregub, the duty foreman of the reactor at that time, and Akimov, who was going to replace him. I explained very clearly, Ask them to continue to reduce the power to 700 to 1000 MW according to the experimental requirements.

"After the assignment, I left the control room, went around to observe the situation before the power cut, and returned to the control room at 12:30. At that time, there were Akimov, toptunov, stolyar schuk, tregub who was supposed to be off duty, other interns and others in the control room.

"I found that the power of the reactor dropped to 30 MW, far lower than the 700 MW required for the experiment. So I asked Akimov what happened. He said that the problem could be solved by turning off the local automatic control system and changing it to manual control, so I approved him to continue to increase the power.

"After that, I left the control room again to observe the situation on the turbine side. When I came back, the power of the reactor increased to about 200 MW. We finally decided to carry out the experiment at this power. I called all the experimenters at that time for a briefing, and then asked them to go back to their posts and get ready.

"The safety experiment started at 1:23:04, everything went smoothly, and all operations were carried out according to the regulations. At that time, I was busy studying the readings on the instruments, and then I heard Akimov say shut down the reactor. With that, he reached out and pressed the emergency power down button. It wasn't long before I heard the explosion

"What happened?" Besonova asked.

"That's what I want to know," gatlov said. "After the explosion, I immediately left the control room and inspected the situation outside. I found that for some unknown reason, the emergency water tank of the protection and control system exploded. The water tank was very huge, with 110 cubic meters. Such an explosion would overturn the roof, and even blow up the whole reactor But fortunately, the reactor below is still intact. I immediately ordered to inject water into the reactor to keep it stable, and then I joined the rescue with others."At about three o'clock, I received a phone call and went to the civil defense headquarters to report the accident to director bulukhanov. Then I came to the pripyaji Medical Center for treatment because of my discomfort. That's all I know."

"The reactor is safe, are you sure? Comrade jatrov. "

"Yes, I'm sure." The deputy chief engineer affirmed, "I've been around the reactor after the incident."

"What about the radiation?"

"Gorbachenko's radiometer showed that the background radiation at that time was 1000 microroentgen per second."

"It doesn't sound so good."

"Yes, there's no doubt there's a nuclear leak there, but fortunately it's still under control and we'll get through it." Jatrov road.

"Yes, but as far as I know, 3.6 roentgen is just the upper limit of a small radiometer." Besonova coldly threw out the question, "why, does the nuclear power plant have no more measuring instruments?"

Gatlov was silent for a moment. "Yes, yes, we have a 1000 roentgen measuring instrument, but it was locked in a safe and then buried under the debris of the building. But the measured value should not have too big deviation, after all, it just blew up a water tank

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