JP2020016459A - Transuranium element oxide removing facility after nuclear explosion - Google Patents

Abstract

To solve the problem that even if a nuclear bomb was exploded, not 100% of nuclear material explodes and Pu not exploded is scattered as oxidation Pu, therefore, particularly oxidation Pu falling at a region slightly away from a center of explosion is not important because the amount is small, but moderate deal must be done and transuranium element oxide other than Pu oxide must be dealt with.SOLUTION: A smooth inclined plate (11) having a triangle cross section is connected to a deposition collecting water pipe (12) waving in a lengthwise direction laid in a house site border. Transuranium element oxide is buried into the ground while falling toward the ground from a cylinder (13) of the water pipe under self-weight.SELECTED DRAWING: Figure 1

Description

The present invention relates to scattered transuranium element oxides.

In the atomic bomb, about 20% of the loaded plutonium (Pu) of about 6.2 kg is released as thermal energy. The remaining 80% remains Pu and reacts with oxygen in the air to become oxidized Pu and fall. Pu oxide is so dense that it sinks into the soil near the explosion site without flying far. I can never return to the surface. The evidence shows that no oxidized Pu has been found in Nagasaki. No oxidized Pu has been found on the site of the A-bomb test site, so you can visit the hypocenter.
When exploded in a spherical shape, the oxidized Pu scattered in the vertical direction falls just below the hypocenter. Pu oxide will be buried underground because there will be only soil left under the hypocenter. Pu scattered in the east-west-north-south direction decreases in inverse proportion to the square of the distance from the hypocenter. Pu oxide generated from 80% of Pu becomes a minute amount and falls to the surface at a distance of 1 km from the hypocenter. Even if it accumulates on the roof etc., the oxidized Pu falls considerably on the ground due to the rainfall due to the development of cumulonimbus clouds. It is said that black rain will occur, but the main component is probably the soil that has soared in the explosion. If you are hit by black rain, it may be activated, so if you take a bath, wash it off in the shower and throw away your clothes as non-burnable garbage.
Even if oxidized Pu is mixed into groundwater, it will sink into the water and sink further underground, so that oxidized Pu can hardly exist in groundwater after several days. Even if it gets into the groundwater, it will be deposited at the bottom of the well when pumping, so it is difficult to enter the mouth. Gamma and beta rays from oxidized Pu do not activate water. However, since spontaneous neutrons are emitted from Pu240, Pu241, Pu242, and Pu238 to a small extent, there is a possibility of activating water impurities, but it is insignificant. The possibility of Pu239 sedimenting at a singular point and recriticalizing is not zero, but it is very low. Even if it is recritical, it does not explode due to the surrounding soil.
In addition, neptunium (Np), americium (Am), and curium (Cm), which are produced by absorbing neutrons or decaying by neutrons, are slight, but they are also oxides in the soil near the explosion site. It sinks into the inside. Pu, Np, Am and Cm are called transuranium elements. The transuranium oxide is referred to as transuranium oxide. In addition, uranium (U) in the tamper is troublesome because there is a large amount of uranium which absorbs neutrons and becomes plutonium. It is assumed that the transuranium element oxide also contains an oxide of U.
Fission products are generated, albeit slightly, of which radiocesium and radiostrontium are slightly more. These reach far away because of their low density. However, while floating in the air, the particles become granular due to static electricity due to friction between the particles and then fall to the surface of the earth.
Even if the atomic bomb was damaged, it was due to the blast, heat, and radiation at that moment, and it would have no effect after several days. However, some fission products have a long half-life, but the radioactivity per unit time is low because of the long half-life, so do not go near by measuring with a radiation detector or remove the surrounding soil. There is no problem if the tide can be taken to a landfill.

Fortunately, Nagasaki City at that time was wooden and the surrounding area was soil. However, the current Nagasaki city has middle-rise reinforced concrete buildings, steel-framed buildings, asphalt-paved roads, and general housing on cement-improved ground.
Around the hypocenter, the middle-rise reinforced concrete building will have no window glass, and the steel-framed building will have only steel frames, but the upper half of a skyscraper will fall. Either way, they die immediately. Even a normal bomb will die immediately if it is hit by a carpet bomb as in the Great Tokyo Air Raid.
In areas deviated from the hypocenter, many structures will be self-sustaining and no one will die immediately. People in structures and underground malls will also suffer less radiation damage.
The problem is Pu oxide that did not explode. It is Pu oxide that falls into the area slightly away from the hypocenter. It is not important because the amount is small, but you must take appropriate measures.
The next issue is radioactive fission products that fall on the surface, which is widely diluted in areas far away from the hypocenter. Due to the low density, you have to deal with it.
We agree with taking contaminated soil to landfills, but there is always a common sense that people oppose landfills near their homes. Even if the landfill and home are 1 km apart, people in the media with pancreatic anxiety panic as dangerous. Gather friends with heart anxiety. In addition, the general people panic without knowing.

Means 1 is a transuranium element oxide removal facility for keeping the transuranium element oxide away from the house.
The boundary of the house site will be soil or gutter.
The upper end of the smooth inclined plate (11) is in contact with the house outdoor wall, and the lower end of the smooth inclined plate (11) is laid in contact with the following sediment collection gutter (12).
The cross section of the smooth inclined plate (11) is a triangle (right triangle), and the bottom surface of the smooth inclined plate (11) is laid in contact with the ground surface.
The sediment collection gutter (12) is a gutter undulating in the length direction laid at the boundary of the house site. A transuranium element oxide removal facility characterized in that a cylinder (13) is laid vertically in a number of valleys of waves toward the ground.
The smooth inclined plate (11) is preferably made of a material having a smooth surface and high watertightness, such as plastic or pottery. If there are a large number of tiles, the tiles may be caught in gaps between adjacent tiles or in a caulking material.
Use a broom to sweep down the gutter or blow down with a blower. Or wash with water.
The transuranium element oxide that has flown down the slope of the smooth inclined plate (11), reaches the cylinder (13), and continues to sink into the ground around the house premises. In Japan, earthquakes occur frequently, including fine ones, so they are filled with vibration. Vibration occurs even when people come and go, so it is filled everywhere with vibration.
After a week, the surface of the sedimentation gutter (12) may be covered with asphalt.

Means 2 replaces the cylinder (13) in the means 1 with a vertical pot (14). The vertical pot (14) is also a candidate made of stainless steel or aluminum.
The side surface of the vertical pot (14) is processed with a material (for example, Teflon) which is vertical and has low frictional resistance, and the bottom surface of the vertical pot (14) is conical.
The vertical jar (14) is provided with a fastener (15) for fastening to the sediment collection gutter (12) in the means 1 on the upper side of the vertical jar (14).
A vertical pot (14) characterized in that a transuranium element oxide that has flown to the ground is buried in the ground.
When transuranium element oxides accumulate in the vertical jar (14) several days after the atomic bomb was dropped, the fasteners (15) are removed and the vertical jar (14) containing transuranium element oxide is removed by gravity. Naturally drops into the ground.
Since the side surface is Teflon-coated, it is easy to fall into the ground because there is little friction with the surrounding soil. Since the bottom is conical, it digs into the ground.
Even if you try to take out the transuranium element oxides that have just been made into a jar, there is no way out of the garbage dump. Rejected by residents and local governments around the garbage dump. Therefore, it is buried by gravity dropping deep inside the home premises. Inhabitants of the adjacent land are also dropped on the periphery of the house. There is each other.
The vertical pot (14) may be covered with a removable lid in normal times. After being informed that the atomic bomb was dropped, open the lid.

Means 3 is equipment for protecting the surface soil from radioactive contamination.
The surface soil (31) within the flat site boundary is covered with asphalt (32), and a number of solar cell panels (33) are laid on the surface of the asphalt (32).
The four sides of the site boundary are surrounded by a shielding wall (34), and an outer peripheral sediment collection wall (35) is laid inside the site of the shielding wall (34).
The barrier (34) is an asphalt or concrete wall. Lay below the surface of the asphalt (32).
The space between the shielding wall (34) and the outer peripheral sediment collection wall (35) is soil.
The outer peripheral sediment collection wall (35) is a wall made of asphalt or concrete, and is laid below the surface of the asphalt (32).
The transuranium element oxide that can be scattered on the site is accumulated between the shielding wall (34) and the outer peripheral collection wall (35), and the transuranium element oxide is buried in the solar cell panel (33) outer peripheral soil. It is a feature of removing soil surface radioactivity.
The transuranium element oxide is accumulated on the outer peripheral sediment collection wall (35) with a blower, broom or water. During rainfall, transuranium element oxides are accumulated on the outer peripheral sediment collection wall (35) with a broom, and overflowing water flows into the gutter. Because the transuranium element oxide is heavy, it precipitates at the bottom of the peripheral sediment collection wall (35).
The soil surface between the barrier (34) and the peripheral sediment collection wall (35) is covered with cement or asphalt. The surface soil under the asphalt (32) protected from radioactive contamination is put into a greenhouse to grow grains and the like.
In Chiba and Ibaraki prefectures, where the tsunami hit in 3.11, there are wilderness areas without buyers. Factories and houses are unlikely to come in. The area where the decommissioning of Fukushima Daini was mentioned will return to the calm wilderness where Fukushima Daini construction was still possible. Unless someone pays property taxes on these overly wide lands, local governments in the area are in trouble. There is no alternative but to make up for the property tax with solar power revenue.
When the deputy threatens TEPCO and the state and tries to build a solar power plant there, all involved are simply stuck in the mire. Electricity retailers created by the liberalization of electricity are forced to build solar power plants.
After a nuclear explosion, fallout will be generated in addition to the transuranium oxide. Fallout is a radioactive, lightweight radioactive material in addition to fissile products. Because it is lightweight, it flies far and pollutes.
The fallout is loaded into the vertical jar (14) of the means 2 together with the transuranium oxide and buried in the surrounding soil.
(Not posted for public order and morals violations)

Means 4 is a method for disposing of spent nuclear fuel of a light water reactor (LWR).
After loading the spent nuclear fuel assemblies or nuclear fuel rods of the light water reactor into the vertical jar (14) of the means 2, the vertical jar (14) is filled with powdered cadmium or powdered lead, sealed and upright. This is a spent nuclear fuel disposal method characterized by being buried underground.
LWR's spent nuclear fuel rods contain transuranium oxide in a zirconium alloy sheath. Zirconium alloys are not easily corroded. Therefore, there is no problem even if it is buried in the ground naked, but it is better to load it into the vertical jar (14).
If you bury it vertically, it will sink more and more underground.
Since the melting point of cadmium (Cd) or lead (Pb) is low, even if heat is generated from the nuclear fuel rod, Cd or Pb is melted and heat removal is improved, and the nuclear fuel rod does not melt.
Spent nuclear fuel assemblies or rods generate decay heat. Since cadmium or lead is melted by the heat, the decay heat is transferred from the vertical pot (14) wall into the ground.
In particular, cadmium absorbs spontaneous neutrons emitted from spent nuclear fuel assemblies or rods. Spontaneous neutrons are inelastically scattered by cadmium and reduce the neutron velocity. Cadmium absorbs slow neutrons significantly. In order to further reduce the neutron velocity, carbon, boron carbide or water may be mixed into the cadmium powder.
(Not posted for public order and morals violations)

The means 5 is a transuranium element oxide collection method immediately after the explosion in order to reduce the transuranium element oxide guided to the soil or the gutter in the means 1.
This is a transuranium element oxide collection method characterized by flying a drone over and around the mushroom cloud and covering the mushroom cloud with the adsorption filter.
Set up drone standby locations throughout Japan to keep drones equipped with adsorption filters on standby.
The hot air of a fireball generated by a nuclear explosion is generated by exciting atoms in the atmosphere mainly by expansion energy. A local updraft occurs, which takes in water vapor and vaporized substances in the surrounding atmosphere. Cools as it rises. Water vapor condenses, and the cloud of donut-shaped circulating clouds becomes mushroom-like.
The fireball contains relatively light fission products and transuranium oxides.
In the Nagasaki class, the diameter of a fireball is said to be 200 to 300 meters. Not a big deal.
Since the mushroom cloud can be visually observed, transuranium element oxides and relatively light fission products can be collected by covering the mushroom cloud with an adsorption filter.

When a foreign country attacks Japan with an atomic bomb attack, the first thing to do is the sea area around Japan, which is far from the foreign country and the friendly nation, and then the mountainous area of Japan. Finally, the attacking nations bomb the urban areas with destruction. It is important to ensure the safety of dwellings and settlements scattered in mountainous areas. It is best to get evacuated to the surrounding cities, but some people do not want to leave. Therefore, the present invention is applied around the resident's house to ensure immediate safety.
If nothing is done, the marketing offensive from arms manufacturers around the world to Japan will be tremendous. Things like the old Siemens case and patrol boats Orion and Lockheed are more likely to happen.
Therefore, if the atomic bomb damage is judged calmly and an appropriate countermeasure is taken as shown in the present invention and the Japanese are prepared to take measures, it is possible to alleviate the extortion and aggression from the Japanese friendly countries.
Many foreigners who have flowed into Kyushu and Osaka will be forced to bankrupt and will gather in nearby mountains. The present invention can be used to protect the vicinity of a new resident's residence in a nearby mountainous area. Before that, many of those restaurants shout out about Japan's arms expansion. In the meantime, the arms-producing nation jumps.
As in the present invention, if the atomic bomb damage is judged calmly, appropriate measures are taken, and the Japanese are prepared to respond, the voices of the food service providers and their sympathizers on the expansion of Japan's arms and the development of nuclear weapons will be reduced. can do.

This facility keeps transuranium oxides generated after a nuclear explosion away from houses. Buried in the grounds of your home.

FIG. 1 is a schematic view of a transuranium element oxide removing facility of the means 1 for keeping the transuranium element oxide away from the house.
The boundary of the house site is the ground surface or gutter.
The upper end of the smooth inclined plate (11) is in contact with the outdoor wall of the house, and the lower end of the smooth inclined plate (11) is laid in contact with the sediment collection gutter (12).
The cross section of the smooth inclined plate (11) is a triangle (right triangle), and the bottom surface of the smooth inclined plate (11) is laid in contact with the ground surface.
The sediment collection gutter (12) is a gutter that undulates in the length direction laid at the boundary of the house site. A cylinder (13) was buried vertically into the ground in a number of valleys of the waves.

FIG. 2 is a schematic view of the vertical jar (14) of the means 2 for burying the transuranium element oxide that has come to the ground in the ground.
The cylinder (13) in the means 1 is a vertical pot (14).
The vertical jar (14) is made of stainless steel or aluminum.
The side surface of the vertical vase (14) is vertical and Teflon-coated, and the bottom surface of the vertical vase (14) is conical.
The vertical jar (14) is provided with a fastener (15) for fastening to the sediment collection gutter (12) in the means 1 on the upper side of the vertical jar (14).
FIG. 3 is a schematic view showing that a fallout is put in a vertical pot (14) together with a transuranium element oxide and buried in the ground.

FIG. 4 is a schematic view of the soil surface radioactivity removal equipment of the means 3.
The soil surface within the flat site boundary is covered with asphalt (32), and a number of photovoltaic panels (33) are laid on the surface of the asphalt (32).
Enclose the four sides of the site boundary with a shield (34). An outer peripheral collection wall (35) is laid inside the site of the shielding wall (34).
The barrier (34) is an asphalt or concrete wall. Lay below the surface of the asphalt (32).
The space between the shielding wall (34) and the outer peripheral sediment collection wall (35) is kept in soil.
The outer peripheral sediment collection wall (35) is a wall made of asphalt or concrete, and is laid below the surface of the asphalt (32).
The transuranium element oxide that can be scattered on the site is accumulated between the shielding wall (34) and the outer peripheral collection wall (35), and the transuranium element oxide is buried in the outer peripheral soil of the solar cell panel (33).
After accumulation, asphalt is spread on the surface around the peripheral sediment collection wall (35) to prevent the fallout from re-dispersing.

FIG. 5 is an outline view of the spent nuclear fuel disposal method of the means 4.
After loading the spent nuclear fuel assemblies or rods of the light water reactor into the vertical jar (14) of the means 2,
A method for disposing of spent nuclear fuel, characterized in that the vertical pot (14) is filled with powdered cadmium or powdered lead, sealed, and settled underground in an upright state.

If you are 10 km away from the hypocenter after the nuclear explosion, you can evacuate from your home at 1:00, and return to your home a week after confirming that the radioactivity is low.
In an effort to strengthen the country's land for the civil engineering and construction industry, the government is expanding areas where major earthquakes are likely to occur. Catastrophes occur everywhere in the Japanese archipelago, which has entered its active period. Due to population decline and depopulation, breakwaters, roads and evacuation buildings are being constructed where there are no Japanese residents. Do not draw up Japan's growth strategy, accepting the depopulation and depopulation. They do not immediately evacuate or head towards a new life in the event of an explosion.
Large-scale construction is easier to do in places with fewer residents. No one lives where the tsunami is likely to come. No people live around the dike in the zero meter zone. Therefore, it is easy to make because the opposite movement is unlikely to occur. Should a large-scale construction end be damaged, there are few complaints because there are few people around it, and there is no complaint because sufficient money can be guaranteed. If such a large-scale construction is performed, it is more practical to implement the present invention.
In the Fukushima accident, he cleaned the surrounding wilderness and collected garbage. Now I am in trouble with the garbage collected. I don't understand the meaning of cleaning and collecting garbage in wilderness. I do not think that the media of the intellectuals and opinion-makers have a common sense. Since long-lived radioactivity is weak radioactivity, it is best to cover it with asphalt on weeds at best, leaving it in a wilderness. A wall may be provided on the sea side, and a replaceable filter may be laid between them.
There are plenty of free land in Japan that is similar to Fukushima. The best thing is to build a fine one-story house and have them live permanently. You can keep beko in Tokyo. Due to property taxes and state-owned assets, there is a lot of state-owned land with a book price, so making state-owned land free or less negative should be a good policy in preparation for future declines in land prices. Under the regime of the Wealthy Party, the Democratic Party of Japan has been accelerating the policy of lowering the inheritance tax credit and replacing it with the middle class as part of the tax incentive for the rich. The price of middle class ownership will increase. The amount paid for health insurance premiums is kind to the wealthy and strict for the middle class. Deflation will not stop unless the middle class is rescued by controlling unnecessary spending. Now that the consumption tax hike does not remain, raising the tariff will increase the burden on private consumption, but will increase the national treasury income. There will be the same minimum tariff worldwide, even for trade liberalization. Wealth owners buy at overseas travel duty-free shops, so the burden increases only for the middle class. If disposable income decreases, it will be necessary to respond cheaply to the atomic bomb damage. The present invention is cheap.
The book value of research facilities / facilities, state-owned land, etc. would be enormous, but if it were to be sold, it would be less than one tenth. When the world economy stagnates and the actual situation becomes apparent, it will cause great confusion. At least, it would be better to sell the state-owned land to a major private energy company as a solar power plant and land for the atomic bomb. If the land becomes scarce, the actual demand price of state-owned land and private land will increase due to the relationship between supply and demand. It is less harmful to remove old and unusable research facilities and facilities and sell them as drone training centers, fossil fuel power plants, solar power plants and land for the atomic bomb. You can just throw away the cheap but dangerous land you built when the population was large. In a declining society, there are many relatively safe alternatives. (Not published for violation of public order and morals) Local governments in depopulated areas are still happy. You can ask for as much money as possible from the Japanese government. Urban residents and depopulated residents have different attitudes toward the country. The British ruling class and the general class have different ideas (different ways of handling railways and garbage strikes).
Japan, whose GDP is not rising due to population decline, has no room to invade foreign countries. There is no room to defend. The purpose of the present invention is to defeat a delusional dictator's intention to attack the Yakeso Atomic Bomb by taking measures such as the present invention with less damage. (Not posted for public order and morals violations)
Marine fish farming and greenhouse cultivation in a small city in the central basin of the archipelago can minimize the damage from about 100 atomic bombs. Solar cells scattered in areas where a major earthquake is likely can provide the minimum energy.
The infrastructure will be prepared with the nameplate indicating that it is providing Taisho Dairy Products and Hayashinaga Confectionery. Ask them to increase their sales of sweets and dairy products. Since the infrastructure of this country where natural disasters are so intense and frequent is difficult to keep functioning for a long time, it should be recognized and tolerated that the infrastructure is cheap. Evacuate early and rescue and relocate promptly after suffering damage. Fields, fields, and residential land can be selected at 1.2 times the land price equivalent exchange method. Homes, furniture, and clothing can be selected for homes, furniture, and clothing at 1.2 times the equivalent exchange method. It is necessary to prohibit personal possession and intrusion because the tsunami will come again in places where you will encounter a tsunami.
INDUSTRIAL APPLICABILITY The present invention accepts depopulation and depopulation, and is useful for the development of multi-polar, centralized small city groups.
Depopulation and depopulation cannot and cannot be stopped. With the life expectancy of Japanese people increasing steadily, if the number of children born increases, the population will gradually decrease or temporarily increase. To provide them with a richer life, the working-age people must increase their productivity significantly. Buildings, facilities, services, and infrastructure related to clothing, food, housing, energy, medical care, and nursing for the elderly at the same time as buildings related to clothing, food, housing, energy, medical care, childcare, and education for the birth・ Equipment, service and infrastructure are indispensable. Here, when foreigners are added to help, further productivity efficiency is essential.
At the extreme, the population is only increasing if a person's lifespan is a thousand years at the current birth rate. As long as current medical policies for doctors, drug companies, and life insurance continue, death is difficult, and prohibition of dignity death and the enrichment of pensions and vulnerable pensions will keep them alive. The media will make a musical accompaniment if you want to lower the pension and kill us. It is noisy that Deputy Prime Minister Aso does not want to live long. Local governments and welfare sites cannot and do nothing. Those who are worried about killing us will have enough energy and less stress so they will live around 200 years old. If it goes well, it is likely to live to near Chitose. So don't raise the birth rate.
Metropolitan Fast citizens do not pay taxes for resilience and do not vote on opposition parties that do not seek to prevent resilience.
Some media want to confuse Japan, such as during the war, Hidemi Ozaki, who went into the media without entering his longed for office and led to a conflict between Japan and China and became a spy for Zorge. . However, the current media is really panic. Since technical explanations do not help, it is necessary to repeatedly send to the media, through years of calm press, that the atomic bomb is not so scary if prepared.
Unexploded ordnance is highly possible. Incomplete explosions due to aging of detonators and explosives are more likely. Nevertheless, a small amount of fission products and up to 90% of 6.2 kg of Pu oxide are scattered. It will also explode near the hypocenter, so even if the robust building is still alive, human damage will occur. Even if Pu239 fails to explode and is unexploded, it still sinks underground because it is heavy. An explosion at that point has the same effect as an underground nuclear test, so it has little effect on the surface. If the operation error is extremely small in spherical symmetry, it will not be imploded, so it cannot be a large explosion. It should be dug up and disposed of just in case. What must be feared is the dissemination of news, regardless of whether the bomb was exploded or timed. News of the night drop panic. Media officials are worried and panic. He chooses the way to surrender like Yodo at the time of Osaka Castle. A young beautiful woman can live a decent life among the common people.
There is no public literature on the handling of unexploded bombs.

FIG. 2 is an outline view of a transuranium element oxide removal facility of the means 1 for keeping the transuranium element oxide away from the house. The outline figure of the vertical jar (14) which embeds the transuranium element oxide which came to the said ground of the means 2 in the said ground. FIG. 5 is a schematic view of a method in which a radioactive fallout is placed in a vertical pot (14) together with the transuranium element oxide of the means 2 and buried in the ground. FIG. 3 is an outline view of a soil surface radioactivity removing facility of a means 3. FIG. 4 is an outline view of the spent nuclear fuel disposal method of the means 4.

11 is a smooth inclined plate.
12 is a sediment collection gutter.
13 is a cylinder.
14 is a vertical vase.
15 is a fastener.
32 is asphalt.
33 is a solar cell panel.
34 is a barrier.
35 is an outer peripheral collection wall.

Claims (4)

The house site boundary is the surface or gutter,
The lower end of the smooth inclined plate (11) is in contact with the outdoor wall of the house, and the lower end of the smooth inclined plate (11) is laid in contact with the following sediment collection gutter (12),
The smooth inclined plate (11) has a triangular cross section, and the bottom surface of the smooth inclined plate (11) is laid in contact with the ground surface,
The sediment collection gutter (12) is a lengthwise waving gutter laid on the boundary of the house premises, and a cylinder (13) is laid vertically in the ground in many valleys of waves. Equipment for removing transuranium element oxides. The cylinder (13) in claim 1 is replaced by a vertical pot (14),
The side of the vertical vase (14) is vertical, the bottom of the vertical vase (14) is conical,
The vertical jar (14) is provided with a fastener (15) for fastening to the sediment collection gutter (12) according to claim 1, on the upper side of the vertical jar (14),
A vertical jar (14), characterized by burying a transuranium element oxide that has come to the ground. Cover the soil surface within the site boundary with asphalt (32), lay a number of solar panels (33) on the surface of the asphalt (32),
Surrounding the four sides of the site boundary with a shielding wall (34), laying an outer peripheral sediment collection wall (35) inside the site of the shielding wall (34),
The barrier (34) is an asphalt or concrete wall,
Between the shielding wall (34) and the outer peripheral sediment collection wall (35) is soil,
The outer peripheral collection wall (35) is a wall made of asphalt or concrete, and is laid below the surface of the asphalt (32),
The transuranium element oxide that can be scattered on the site is accumulated between the shielding wall (34) and the outer peripheral collection wall (35), and the transuranium element oxide is buried in the solar cell panel (33) outer peripheral soil. A feature that removes soil surface radioactivity. After loading the spent nuclear fuel assemblies or nuclear fuel rods of the light water reactor into the vertical pot (14) of claim 2,
A method for disposing of used nuclear fuel, characterized in that the vertical pot (14) is filled with powdered cadmium or powdered lead, sealed, and buried underground in an upright state.

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