"An earthquake with a magnitude of 7.5 on the Richter scale occurred in the southeast of our country, with an epicenter depth of 70 meters, and the earthquake is currently causing a tsunami!"

In less than seven minutes, after the tsunami in the Pacific Ocean, this piece of information spread throughout the main island of Japan where the tsunami could be hit.

Japan's tsunami warning mechanism is very well developed and mature.

In 1983, a tsunami struck the Sea of Japan near Hokkaido, and the magnitude of the epicenter was determined seven minutes after the earthquake occurred, and the tsunami warning was issued 14 minutes later. At that time, as soon as you picked up the phone, the telephone office first wanted you to listen to the tsunami warning before you could make a call. Television and radio programs were interrupted, and alarms were repeatedly broadcast, and the people along the coast who were notified were able to evacuate quickly to the high ground to avoid casualties.

In recent years, Japan's tsunami warning system has been upgraded to a higher level with the establishment of various technologies, especially meteorological satellite monitoring and a complete disaster prevention system.

At present, the existing satellites monitor changes in water pressure 24 hours a day, and if an abnormal situation is detected, the local government in the area is contacted by setting up alarm centers in various coastal areas, and then the government notifies residents in the area that may be affected by the disaster through the administrative wireless system for disaster prevention to evacuate urgently. The early warning system has been in operation since 2006, and with the annual tsunami drills in Japan, people are even aware of the evacuation routes when a tsunami strikes.

Within less than 40 minutes of the tsunami warning, Japanese people along the route had already run to the designated shelters with their families.

When the tsunami came, some people had even spread out their picnic mats on the high ground to enjoy this rare, disaster-like sight.

However, not all Japanese people are so heartless.

Fukushima Prefecture, Japan.

On the slopes of a mountain called Mt. Kora, thousands of people are watching.

Fukushima Prefecture, located in northeastern Japan, was not the immediate target of the tsunami. However, reports from the front indicate that the tsunami has generated unusually strong potential energy due to the elastic oscillation of the seabed, and it is very likely that it will have an impact on the Shinmachi area and Fukushima Prefecture.

Although Fukushima Prefecture is famous for its rice and fishing, it is a bit more unusual than other places for a number of reasons.

Here, there are two power plants installed by TEPCO, which are enough to supply half of Japan's electricity.

Fukushima No. 1 and No. 2 nuclear power plants.

At this time, among the people gathered on Mt. Takara, there were more than 100 TEPCO employees.

"It's coming! The tsunami is coming!"

Just as people were hanging their hearts and looking into the distance, a little boy standing on the highest place screamed.

People looked in the direction of his finger and let out an exclamation.

I saw that the tsunami described in the early warning was rushing towards this side at lightning speed!

"Oh my God, I'm afraid this tsunami is no less than fifteen meters!"

"How is that possible? Isn't it just more than 10 meters from the tsunami that directly hit the southeastern islands?

"Bastard!

While people were talking, a technical engineer from TEPCO let out an expletive: "Our power station is only 10 meters away!"

"Ahh

"Oh my God, doesn't that mean that the protective walls of the power station can't withstand this tsunami?"

"How's that going?!"

Everyone present knew the importance of the nuclear power plant and asked one after another.

But the engineers who are familiar with TEPCO's two power stations in Fukushima are already blue at this time!

These two nuclear power plants, together have ten reactors. Without exception, they are the lowest technology boiling water reactors used.

The boiling water reactor is a kind of nuclear reaction light water reactor, and the working process of the boiling water reactor nuclear power plant is coolant, that is, seawater flows in from the lower part of the core, and in the process of rising along the core, the seawater is heated by the fuel rods to turn the seawater into a mixture of steam and water, and through the steam-water separator and steam dryer, the separated high-temperature steam is used to drive the steam turbine-generator set to generate electricity.

This power conversion method is quite simple, but this method also faces a huge and non-negligible problem.

That is, the coolant can't be stopped!

Because once the coolant supply is stopped, the fuel rods, which are like a small sun, will emit a huge amount of heat, which can lead to a series of catastrophic consequences.

The supply of coolant, or seawater, to the Fukushima nuclear power plant relies on pumps driven by two large generators to pump huge amounts of seawater from the seabed.

Once the tsunami breaks through the protective wall of the nuclear power plant and backfills the power station, it is very likely that the two large generators that drive the cooling pump will stop!

Just when TEPCO's technicians couldn't help but swallow their saliva, hoping that things would not develop as they thought. Tsunami, landfall.

The wall of water mixed with a large amount of sediment seems to be an endless bulldozer, crushing everything it encounters.

The abandoned vehicles, all kinds of green vegetation, and the low buildings on the street were completely rolled up the moment they touched the water wall!

Under such a power from heaven and earth, whether it is human life or man-made everything, it seems extremely fragile and ridiculous.

But that's just the beginning.

The tsunami after the landfall swept up everything it could move and moved deeper inland!

Almost instantly, the wall of water, mixed with twisted cars, shattered greenery, and the debris of washed out buildings, poured into the protective wall of the TEPCO Daiichi nuclear power plant on the coast of Fukushima!

"Poof!!"

With a deafening thud, the protective wall, which was more than three meters thick and made entirely of reinforced concrete, looked like a row of matchboxes in the wind.

After only playing a blocking role, he let out a groan and collapsed directly.

The protective wall stirred up a wave more than 20 meters high, and it fell directly from the sky like a big mouth of blood basin that was trying to open, quickly engulfing the three units of the Daiichi Nuclear Power Plant.

Just fifteen seconds later, with a crackling sound of high-voltage electricity in series, everyone clearly heard the sound of a ......large generator set stopping.

The sound came from the direction of the nuclear power plant's Unit 1 – that means that the pumping system, which maintains the coolant supply to the entire Unit 1, has gone on strike!

Just when TEPCO technicians at the scene were worried and hoping that the tsunami would pass quickly and start the backup generator to restart the coolant pumping system of Unit 1, the voice of the unjust soul came again.

The cooling system of Unit 2 died heroically just over 30 seconds after the tsunami hit!