How is the nuclear radiation wastewater produced in Japan?

The reason of nuclear radiation wastewater in Japan is that the nuclear wastewater discharged from Japan leaked from Fukushima nuclear power plant due to the 20 1 1 earthquake, resulting in a large amount of wastewater accumulation.

On 20 1 1 year, an earthquake occurred in the Pacific Ocean in northeastern Japan, which triggered a tsunami. A large amount of water hit the Fukushima nuclear power plant in Japan, which later caused an explosion. At that time, Tokyo Electric Power Company of Japan used a lot of seawater to cool the nuclear reactor in order to cool the burnt-out nuclear reactor. In fact, more than 6,543,800 tons of polluted seawater was discharged at that time. After that, Japan stored the polluted seawater in water storage tanks.

From 20 1 1 to 2023, in the period of 12, more than1/00 water storage tanks were built in Japan. Each water storage tank can store 1000~ 1300 tons of water on average. By August 2023, the capacity of the water storage tank was basically saturated, so they chose to discharge nuclear sewage into the Pacific Ocean.

The cause of the accident at Fukushima nuclear power plant;

1. Tsunami caused by earthquake: This earthquake caused the largest tsunami in Japanese history. Tsunami tide hit Fukushima nuclear power plant, flooded the flood dike near the power station, and caused serious damage to the internal equipment and facilities of the power station.

2. Power supply interruption: affected by the earthquake and tsunami, the external power supply system and standby generator of Fukushima nuclear power plant were damaged, resulting in the failure of normal power supply of nuclear power plant and the loss of power needed for nuclear reactor cooling.

3. Cooling system failure: The nuclear reactor needs continuous cooling to prevent the nuclear fuel rods from overheating and melting. However, due to the power outage caused by the earthquake and tsunami, the cooling system of Fukushima nuclear power plant could not operate normally, which led to the failure of reactor cooling.

4. Nuclear reactor out of control: Due to the failure of cooling system, the internal pressure and temperature of Fukushima nuclear power plant rose rapidly, resulting in overheating and partial melting of nuclear fuel. A large amount of hydrogen is released from the melting core of nuclear fuel rods, which causes hydrogen explosion and damages to buildings.

5. Radioactive material leakage: The molten fuel of the nuclear reactor releases a lot of radioactive materials, including radioactive iodine and radioactive plutonium. These radioactive substances escape to the surrounding environment through the damaged buildings and systems of nuclear power plants, causing serious radioactive pollution.