Heavy rare gas-cooled nuclear reactor, earthquake proof nuclear power plant, heavy rare gas-cooled nuclear reactor with starting device, and heavy radioactive waste dump

Abstract

To provide a nuclear reactor that is decreasing light water reactor spent nuclear fuel to persuade the media of mass communication and local residents, not to mention no need for a final disposal site, on the premise that inhabitants are decreasing and the population density is small and that it is unknown when and where what scale of earthquake takes place.SOLUTION: The breeding performance is enhanced with heavy gas cooling material and nuclear fuel low in plutonium enrichment, and the nuclear fuel is burnt to enhance the plutonium enrichment of the nuclear fuel. Simple processing of only removing fission products from the used nuclear fuel is only required. Although even photovoltaic power generation facilities exploded, dumped objects will increase in future when the power selling price decreases to 8 yen / kwh under a trade guidance (Chinese products may be used as fences in EU and as sunshades in Japan.). The nuclear reactor may take advantages thereof.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] Nuclear fission is the phenomenon in which a heavy atomic nucleus, such as uranium, reacts with a neutron or deuteron to split into two or more lighter atomic nuclei, emitting two or more neutrons. Uranium-235 undergoes significant fission by forming compound nuclei with slow neutrons. Uranium-238 hardly undergoes fission with slow neutrons, but it does undergo fission with fast neutrons. It is thought that compound nuclei do not form. On the other hand, deuterons accelerated to 30-50 MeV in an accelerator cause uranium-238 to undergo nuclear fission. In this process, it is thought that three or more neutrons are produced. As the deuteron's protons are accelerated, their companion neutrons are also accelerated, and these neutrons are thought to cause U-238 fission. The protons are resisted by the positive charge of U-238, so they are behind the companion neutron. The companion neutrons enter the U-238 sphere first and contribute to nuclear fission. The companion protons enter the U-238 sphere later, causing some nuclear spallation. The deuteron's proton and neutron are separated, and only the neutron collides with the target nucleus, U-238, or both are absorbed by the meson short-range nuclear force of the target nucleus. The protons may also be ejected. Nuclear fission and spallation are thought to coexist. A proton alone would split U238 in half, releasing around three fast neutrons, or a proton alone could accelerate the excess neutrons in U238, causing it to split. Accelerators in the 30MeV to 50MeV range are widely used in medicine and are thought to be inexpensive. Protons and deuterons accelerated to over 100 MeV in an accelerator spall uranium-238, releasing a large number of slow neutrons. The released slow neutrons are absorbed by uranium-238 to form plutonium, and Pu forms a compound nucleus with the slow neutrons, undergoing significant nuclear fission. [Background technology]

[0002] The US fast breeder reactor EBR-2 used U-alloy nuclear fuel due to the technical and political difficulties in reprocessing and producing high-purity U-Pu alloys. Fission-alloy nuclear fuel is an alloy of U-Pu-MA with Fission (a collective term for molybdenum, zirconium, palladium, platinum, etc.), which is difficult to remove but does not pose a major problem to reactor nuclear reactions, without completely removing fission products from spent nuclear fuel. Minor actinides MA include neptunium (Np), americium (Am), and curium (Cm). It also contains small amounts of Thorium (Th). In this invention, the spent oxide nuclear fuel from light water reactors that contains fissium, U-Pu-MA, and Th is left intact, and the metallized nuclear fuel that has been removed from volatile and light-mass fission is referred to as light water reactor fissium alloy nuclear fuel (2001). The nuclear power generation of the present invention is equivalent to solar power generation or wind power generation (Patent Document 3). The power density is low and the nuclear fuel temperature can be 300°C or less. In the past, accidents and other failures have occurred when the power density was high and the nuclear fuel temperature was 300°C or higher. Japan's fast reactor test reactor "Joyo" has a central part with a diameter of 80cm and a height of 60cm, and is made up of a mixture of 17.7wt% plutonium oxide enrichment and 23wt% enriched uranium oxide. The peripheral part is made up of depleted uranium oxide and is about 20cm thick. It appears that criticality performance did not change even if the peripheral part was made about 30cm thick. DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0003] As the population declines, there will be no shortage of final disposal sites. Earthquakes can occur at any time, anywhere, and on any scale. In that case, the only option left is to build a nuclear reactor that can persuade the media and local residents to reduce the amount of spent nuclear fuel in light water reactors. Furthermore, to avoid being called an apartment building without a toilet, the handling of radioactive waste (solid radioactive fission products containing almost no Th, U, Pu, or MA) discharged from the nuclear power plant must be clearly stated. [Means for solving the problem]

[0004] Means 1 is a heavy noble gas cooled reactor. In a nuclear reactor consisting of a basic core and a group of stacked control plates, the basic core consists of a central core, a bottom core (200) and a heavy noble gas coolant (4000). The central core is made up of multiple nuclear fuel assemblies stacked vertically as described below. The nuclear fuel assembly comprises a cylindrical central nuclear fuel section and a cylindrical peripheral fuel section that surrounds the central nuclear fuel section. The central nuclear fuel section consists of a highly plutonium-enriched phisium alloy nuclear fuel (1001) clad in stainless steel. Highly plutonium-enriched fissium alloy nuclear fuel (1001) is made by increasing the plutonium enrichment of light water reactor fissium alloy nuclear fuel (2001), or is a simple processed form of spent nuclear fuel that has become highly plutonium enriched through combustion in the reactor. The central fuel section has a diameter of 100 cm and a height of less than 30 cm. The peripheral fuel section is made of light water reactor fissium alloy nuclear fuel (2001) clad with stainless steel. The radial thickness of the peripheral fuel section is 20 cm, and its height is the same as that of the central nuclear fuel section. The bottom core (200) forms the bottom of the central core, is 20 cm thick, and is made of the light water reactor phisium alloy nuclear fuel (2001) clad with stainless steel. The stacked control plate group consists of a number of A-type thin disks (5001) and a number of B-type thin disks (5002). The A-type thin disk (5001) is made by covering light water reactor fissium alloy nuclear fuel (2001) with stainless steel and forming it into a thin disk shape with a thickness of 5 cm or less. Type B thin disk (5002) is a nuclear fuel assembly in the form of a thin disk with a thickness of less than 3 cm. The reactor is covered with a stainless steel cylindrical shielding vessel (3000) equipped with a filtered vent. The heavy rare gas coolant (4000) in the cylindrical shielding vessel (3000) is circulated to remove the heat generated in the reactor. A heavy noble gas cooled nuclear reactor in which the plutonium enrichment level of highly plutonium-enriched fissium alloy nuclear fuel (1001) at the start of operation is 10wt% to 8wt%, the basic core state is subcritical with the maximum delayed neutron fraction below delayed criticality, and the loading type and number of stacked control plates are adjusted to operate. Prior examples of the present invention include Patent Documents 1, 2 and 3. [Patent Document 1] Patent application 2023-131719 [Patent Document 2] Patent application 2023-189696 [Patent Document 3] Patent application 2023-148573

[0005] It seems possible to extract fissium metal nuclear fuel if the reprocessing decontamination factor is lowered. While it would be desirable to extract Pu from fissium metal nuclear fuel through reprocessing, nuclear-weapon states such as the United States, China, North Korea, and Russia oppose and obstruct this approach. Therefore, although it would be expensive, extracting and removing uranium from the fissium metal nuclear fuel would reduce the uranium content of the original fissium metal nuclear fuel, resulting in increased plutonium enrichment. However, because the reactor of this invention is presumed to have high breeding capabilities, highly plutonium-enriched fissium alloy nuclear fuel (1001) can be obtained from the spent nuclear fuel of this reactor through simple processing (mechanically scraping and removing the stainless steel coating, leaving behind the fissium, U-Pu-MA, and Th-containing fuel, while separating and removing volatile and light fission products using gravity and electromagnets).

[0006] Means 2 is an earthquake-resistant nuclear power plant having the nuclear reactor of claim 1. This invention relates to a nuclear power plant comprising the nuclear reactor of claim 1 housed in a cylindrical shielding vessel (3000), and a lightweight gas turbine and a lightweight generator housed in a weatherproof building. The cylindrical shielding container (3000) of means 1 is sealed with a reinforced concrete artificial ground bottom, concrete sides, and a weatherproof roof. A lightweight gas turbine with a coaxially connected lightweight generator consists of stationary blades made of lightweight material (for example, duralumin), a diverging case made of lightweight material (for example, duralumin), and moving blades made of lightweight material. Duralumin can be reinforced with carbon fiber or titanium to further increase its strength. In lightweight generators, the rotor coil is made of aluminum, and the case that covers the rotor is made of duralumin. An earthquake-resistant nuclear power plant characterized in that the center of gravity of the reactor of means 1 is below the surrounding ground surface. In the Japanese archipelago, where multiple rock formations collide and fold, it is difficult to say that the bedrock is stable. It seems that seawater seeps out from the Pacific plate. There are also salt hot springs. Therefore, even if piles are fastened to the bedrock, it is difficult to say that it is very safe. Therefore, the nuclear power plant of this invention is premised on being built on hard or soft ground. It mimics a submarine floating on muddy soft ground instead of seawater. It can also be submerged in water during liquefaction.

[0007] Means 3 is a heavy rare gas cooled reactor with a starter. This relates to a heavy rare gas cooled nuclear reactor in which the state of the basic core of Means 1 is subcritical with a maximum delayed neutron proportion less than delayed criticality, and a B-type thin plate disc (5002) is not mounted on the central core, but an A-type thin plate disc (5001) is mounted. The accelerator (300) installed on the outer periphery of the cylindrical shielding vessel (3000) generates a mixed proton beam of 30 MeV to 50 MeV, and the mixed proton beam is irradiated from the mixed proton beam tube (301) to the light water reactor fissium alloy nuclear fuel (2001) in the central core by an activation device. Activate the heavy noble gas cooled reactor. Even in subcritical reactors below delayed criticality, if plutonium is contained inside, nuclear fission reactions occur due to spontaneous neutrons emitted from the plutonium or neutrons emitted by reactions with plutonium alpha rays. Therefore, it can be operated, albeit at a low power output. When deuterons from the above-mentioned starting device collide with U238, nuclear fission and spallation occur, increasing the power output. When protons from the starter collide with the thorium, they cause nuclear fission, spallation, and the release of neutrons, increasing power output. Neutrons generated by nuclear spallation can cause nuclear fission or create fissile materials. In particular, care must be taken with Th and neptunium (Np), as they can react with protons to release three or more neutrons.

[0008] Means 4 is a heavy radioactive waste dump. This involves dumping radioactive waste discharged from methods 1 and 2 onto the surface of the subducting Pacific plate, north of Kinkazan in the Japan Trench, which is the boundary between the North American and Pacific plates in Japan's exclusive economic zone. North of Kinkazan, both the Oyashio and Kuroshio currents move away from the Japanese archipelago. The coast and land around Kinkazan are unlikely to be affected. The radioactive waste is mixed with iron or activated heavy metals to make the specific gravity heavier than that of serpentine, thereby forming heavy radioactive waste. The above-mentioned heavy radioactive waste is filled into a stainless steel container with a rust-proof surface to form a heavy radioactive waste dump. The nuclear fuel in light water reactors and FBRs is sealed in a tube made of heavy metal (such as stainless steel or zirconium alloy) called a cladding tube. When spent nuclear fuel is in a cladding tube, it becomes radioactive and turns into radioactive heavy metals. Radioactive heavy metals cannot be dumped in regular garbage dumps, so they are incorporated into heavy radioactive waste dumps. Additionally, they can be dumped on the surface of the Pacific plate, which is located on the subducting side of the Japan Trench. The accumulation of radioactive heavy metals can be reduced by mixing them into the composition of stainless steel containers with rust-proofed surfaces. [Effects of the Invention]

[0009] Because the structure is simple, we can expect to reduce manufacturing and construction costs. Even if they are destroyed, they can be easily and inexpensively demolished and the land cleared. They can be rebuilt whenever damage occurs in an earthquake. This will create demand for rebuilding, which will be a positive for the Japanese economy. The plutonium enriched Fisium alloy fuel (1001) in the central fuel section becomes more plutonium enriched as the fuel burns. Therefore, the next fuel load was treated simply. The plutonium enrichment of the light water reactor fissium alloy nuclear fuel (2001) in the peripheral fuel section also increases as burning progresses. Therefore, the next nuclear fuel to be loaded will be light water reactor fissium alloy nuclear fuel (2001). This will reduce the accumulated amount of spent light water reactor nuclear fuel. Furthermore, the spent light water reactor fissium alloy nuclear fuel (2001) in the peripheral fuel section can be easily processed and used as highly plutonium-enriched fissium alloy nuclear fuel (1001) in the central nuclear fuel section of a new reactor. This will allow for increased production of new nuclear reactors and a rapid reduction in the accumulated stock of spent nuclear fuel from light water reactors. In this reactor, if light elements are removed from spent nuclear fuel and a simple process is carried out to leave fisium along with U and Pu, it becomes highly plutonium-enriched fissium alloy nuclear fuel (1001). Separate extraction of plutonium is not necessary. The degree of plutonium enrichment is increased by burning the nuclear fuel. Radioactive fission products made up of light elements are dumped at the boundary where the Pacific Plate subducts under the Japanese archipelago. Naturally, the Japanese archipelago sinks. Even in Tokyo Bay, the land area is being eroded by the subduction of the Pacific Plate. The eroded area is being replenished with soil carried by nearby large rivers from the nearby mountainous areas. Because the amount of replenishment is so large, dredging is being carried out. Fishermen will also eventually disappear due to the declining birthrate and aging population. Therefore, there will be no more trouble with fishermen. Fishing will become dominated by land-based aquaculture. U238 is a good shielding material against radiation. Therefore, light water reactor fissium alloy nuclear fuel (2001) with a high proportion of U238 is a good shielding material. Iron and lead are also good shielding materials, but they become radioactive, which makes waste disposal difficult later. As light water reactor fissium alloy nuclear fuel (2001) is burned, its plutonium enrichment increases, making it a good nuclear fuel. It helps reduce the volume of spent light water reactor nuclear fuel, which reduces concerns about final disposal sites. BEST MODE FOR CARRYING OUT THE INVENTION

[0010] It has been possible to provide a nuclear reactor that can nuclearly burn up accumulated spent nuclear fuel and use the heat generated in the process of nuclear burnup to generate electricity. Example 1

[0011] Example 1 is a heavy noble gas cooled reactor. Figure 1 shows an overview of a heavy noble gas cooled reactor. The nuclear fuel assembly comprises a cylindrical central nuclear fuel section and a cylindrical peripheral fuel section that surrounds the central nuclear fuel section. The central nuclear fuel section consists of a highly plutonium-enriched phisium alloy nuclear fuel (1001) clad in stainless steel. Furthermore, zirconium must not be intentionally mixed into highly plutonium-enriched fissium alloy nuclear fuel (1001), as this would reduce breeding performance and make it difficult to increase the plutonium enrichment level through burning. The diameter of the central nuclear fuel section is approximately 100 cm, and the height is less than 30 cm. If a low-melting-point metal (e.g., lead, bismuth, or gallium) is filled in the gap between the nuclear fuel and the stainless steel, the stainless steel can be easily peeled off during simple processing. The peripheral fuel section is cylindrical, approximately 20 cm thick in the radial direction, and covers the side of the central nuclear fuel section. It is made of light water reactor fissium alloy nuclear fuel (2001) clad with stainless steel. Its height is the same as that of the central nuclear fuel section. The bottom core (200) forms the bottom of the central core, is about 20 cm thick, and is made of the light water reactor phisium alloy nuclear fuel (2001) clad with stainless steel. The stacked control plate group consists of a number of A-type thin disks (5001) and a number of B-type thin disks (5002). The A-type thin disk (5001) is made by coating light water reactor fissium alloy nuclear fuel (2001) with stainless steel and forming it into a thin disk shape with a thickness of 5 cm or less. Type B thin disk (5002) is a central nuclear fuel assembly in the form of a thin disk with a thickness of less than 3 cm. The reactor is surrounded by a stainless steel cylindrical shielding vessel (3000) that is fitted with a filter-equipped vent. If the cylindrical shielding vessel (3000) is equipped with a filtered vent, a containment vessel is not required. The gas is released to the outside through the filtered vent before the pressure inside the cylindrical shielding vessel (3000) increases. If the internal pressure is low, a large-scale explosion is unlikely to occur. The reactor of the present invention aims for a power density on the same level as solar power generation, so a low temperature is acceptable. Even if an explosion occurs, it will not be large-scale. The heavy rare gas coolant (4000) in the cylindrical shielding vessel (3000) is caused to flow to remove heat generated in the reactor. At the start of operation, the plutonium enrichment of the highly plutonium-enriched fissium alloy nuclear fuel (1001) will be 10wt% to 8wt%, and the basic core state will be subcritical, below delayed criticality by the maximum delayed neutron fraction (approximately 0.0185 for fast fission of U238), and the reactor will be operated by adjusting the loading type and number of stacked control plates. Furthermore, it is recommended that the plutonium enrichment level of highly plutonium-enriched fissium alloy nuclear fuel (1001) be 8 wt% at the start of operation. From a safety perspective, a 20% margin should be added to the 10 wt% level. This will make it easier to obtain licenses and permits. It will also give the examiners peace of mind. As seen in the JCO accident, there is a gap in perception between the field and the design. Even if monitoring equipment is installed, there is a possibility that it can be circumvented. Even if delayed criticality does not occur, 8 wt% should be maintained. Delayed criticality will occur as burnup progresses. In addition, high plutonium enrichment reduces breeding performance. This could hinder the increased production of new reactors. The spacers create gaps between the divided central core sections, allowing the passage of heavy noble gas coolant to enhance the heat removal effect, and also make it easier to stack and remove the sections. A crane is used to stack and remove the stacked control plates on top of the central core. The stacks are stored in a stack vault, a stainless steel container lined with silver-indium-cadmium (Ag-In-Cd), the main component of PWR control rods, which makes the stacks sufficiently subcritical. The heavy rare gas coolant (4000) in the cylindrical shielding vessel (3000) becomes hot due to the heat from the nuclear fuel, enters the gas turbine through the high-temperature heavy rare gas coolant pipe, rotates the generator and generates electricity. After completing its work in the gas turbine, the low-temperature heavy rare gas coolant is cooled in an air-cooled cooler and returns to the cylindrical shielding vessel (3000) through the low-temperature heavy rare gas coolant pipe by a circulator. The upper limit of plutonium enrichment in MOX fuel for light water reactors is often set at 10 wt% for safety reasons.

[0012] The plutonium enrichment of the plutonium-enriched fissium alloy nuclear fuel (1001) at the start of operation, the thickness of the A-type thin plate disc (5001) and the B-type thin plate disc (5002) are easily changed, so they will be changed appropriately during the design and operation stages. Unless the numerical targets are clearly defined, we cannot proceed with the design. If plutonium were to be extracted alone, it would be opposed by the United States due to the possibility of it being used to make an atomic bomb. However, if it were to be extracted from light water reactor fissium alloy nuclear fuel (2001), it would be permitted because the possibility of it being used to make an atomic bomb is low. Light water reactor fissium alloy nuclear fuel (2001), which is made by metallizing spent oxide nuclear fuel from light water reactors, has a low Pu enrichment. Therefore, removing U would result in an increased Pu enrichment, making it possible to produce high-plutonium-enriched fissium alloy nuclear fuel (1001). Alternatively, if only Pu is extracted in a locked and sealed building and mixed with other light water reactor fissium alloy nuclear fuel (2001) in a continuous conveyor belt process, it could become high-plutonium-enriched fissium alloy nuclear fuel (1001). Alternatively, it is possible to extract Pu to the electrodes of light water reactor fissium alloy nuclear fuel (2001) through dry reprocessing, and turn it into high-plutonium-enriched fissium alloy nuclear fuel (1001). In this reactor, the spent nuclear fuel is a highly plutonium-enriched fissium alloy nuclear fuel (1001) that has been simply processed to remove light elements and leave fissium along with U and Pu, so there is no need to extract plutonium separately. It is also possible to use light water reactor MOX fuel in the central fuel section and increase the Pu enrichment by advancing the burnup of the light water reactor fissium alloy fuel (2001) in the peripheral fuel section. This burned-up light water reactor fissium alloy fuel (2001) in the peripheral fuel section can then be used as the central fuel section for the next operating cycle. The height of the central core is set to, for example, 40 cm, and stacked control plates are piled up there to reach delayed criticality. If burnup progresses and it looks like the reactor will go above delayed criticality but below prompt criticality, the stacked control plates are removed. An emergency shutdown involves injecting borax or Ag-In-Cd particles into the reactor. The core nuclear design calculations for the reactor of the present invention, which uses an extremely reduced amount of neutron moderator, seem insufficient to apply the core nuclear design calculation codes for conventional reactors with conventional neutron moderators as they are. Taking this into consideration, and furthermore, the core dimensions were determined based on the values ​​of previous fast reactors, and the plutonium enrichment of the highly plutonium-enriched fissium alloy nuclear fuel (1001) at the start of operation was set at 8 wt%. It appears that the plutonium enrichment level for light water reactors is set at 10 wt% or less for safety reasons. In the reactor of the present invention, if the enrichment level is 10 wt%, there is a risk of prompt criticality occurring during fuel loading or the early stages of burnup. On the other hand, if the reactor is subcritical at the initial loading stage, it will take a long time to increase power, so operation is started at a slightly higher level than delayed criticality at the early stage of burnup. Considering that the core reactivity increases as burnup progresses, a plutonium enrichment of 8 wt% is considered appropriate. Example 2

[0013] Example 2 is an earthquake-resistant nuclear power plant. The overview of the heavy noble gas cooled reactor in Figure 1 also shows an earthquake-resistant nuclear power plant. The nuclear power plant comprises the nuclear reactor of claim 1 housed in a cylindrical shielding vessel (3000), and a lightweight gas turbine and a lightweight generator housed in a weatherproof building. The cylindrical shielding container (3000) of means 1 is sealed with a reinforced concrete artificial ground bottom, concrete sides, and a weatherproof roof. The lightweight gas turbine and lightweight generator are directly connected on the same shaft. The lightweight gas turbine consists of stationary blades made of lightweight material, a diverging case made of lightweight material, and moving blades made of lightweight material. Earthquake resistance can be increased by laying seismic isolation rubber or seismic isolation devices on top of reinforced concrete artificial ground. Example 3

[0014] Example 3 is a heavy rare gas cooled reactor equipped with a starter. Figure 2 is a schematic diagram of a heavy noble gas cooled reactor with a starter. The heavy rare gas cooled reactor is started up by an accelerator installed on the outer periphery of the cylindrical shielding vessel (3000) generating a mixed proton beam of 30 MeV to 50 MeV, and the mixed proton beam is irradiated from the mixed proton beam tube (301) to the light water reactor fissium alloy nuclear fuel (2001) in the central core by an activation device. Promote the start-up of subcritical heavy noble gas cooled reactors below the delayed criticality level. The reactor operates in a region where the kinetic energy of nucleons allows for both nuclear fission and spallation.

[0015] Example 4 is a heavy radioactive waste dump. Figure 3 shows the dumping status of heavy radioactive waste dump bodies. Mixing radioactive waste with iron or activated heavy metals to make the specific gravity heavier than the specific gravity of serpentine to make it heavy radioactive waste; A heavy radioactive waste dump in which the above-mentioned heavy radioactive waste is filled into a stainless steel container with a rust-proof surface (Teflon or enamel). High-purity iron can also be used as a substitute for rust-proofed stainless steel. The shape of the heavy radioactive waste dump is flattened to make it less likely to roll. Heavy radioactive waste is made more stable by dissolving the radioactive waste with iron or activated heavy metals at high temperatures. The radioactive waste and iron or activated heavy metals can be converted into oxides and then vibration-filled. There is a gap of about 40%, but it cannot be pierced with a fork. Adding a low-melting-point metal increases the filling rate. The metal or oxide of the radioactive waste can also be filled into the molten iron or activated heavy metals. Located on the Pacific Plate, the area from Tohoku to the north is relatively shallow and has few active faults. The Japan Trench in this area is about 7,000 meters deep. If the material were dumped on the surface of the Pacific Plate just before the Japan Trench, it would sink under its own weight, pass through the Japan Trench, and sink under the North American Plate. The specific gravity of the heavy radioactive waste dump was made heavier than that of serpentine in the Pacific Plate (olivine, which has a specific gravity of about 3.2, changes under the influence of water to a specific gravity of about 2.6). It would be even better if the specific gravity of the heavy radioactive waste dump was made heavier than that of olivine. Heavy radioactive waste dumps made heavier than the plate density will be dumped on the surface of the subducting plate at the plate boundary along the coast of the Japanese archipelago. The Japan Trench would be fine if it would avoid any trouble with the fishing industry. The soft but thick sediments would be excavated, penetrated through the North American plate, and then dumped onto the subducting Pacific plate. Alternatively, the heavy radioactive waste dump of the present invention would be dumped in the Pacific coastal land by excavating deep enough to reach the surface of the North American plate, and the excavated material would be backfilled on top of it. When dumping a heavy radioactive waste dump, it can be left as is, but the soil on the seabed must be removed or a depression must be made. This can be done by cutting it with a laser, drilling it (it was too hard and difficult to repair the Suez Canal), or by blowing it up with explosives (the Monroe-Neumann effect is effective). If there is a depression near the dumping site, the waste can be dumped there. The western side of the Japanese archipelago appears to rest on the Amur Plate, at the eastern end of the Eurasian Plate. The Philippine Plate appears to be subducting beneath the Amur Plate. The Pacific Plate appears to be below that. The subduction boundary appears to be closer to the interior of the archipelago than the coast of the Sea of ​​Japan. There are too many unknowns. Therefore, dumping will not be done on the western side of the archipelago. The Japanese archipelago appears to be on a plate of numerous stained-glass fragments. Volcanic eruptions are used as a hidden flavor, pushing and shoving. Each person builds their own home, satisfying them with the technology they have and within their own budget. Self-hypnosis and suggestion are used to ensure absolute safety, otherwise they cannot continue to live in their home. Companies can make money risk-free by selling aesthetics, the environment, and health, rather than structure. Homeowners have no need to fear too much, as the risk of total destruction is likely to be within 10 meters on either side of the active fault line. For aesthetic reasons, the footage will repeatedly show only the most severely damaged areas. Generally, manufacturing companies take risks after considering what to do after the fact (bankruptcy, flight, insurance, subsidies). However, in the past, it was said that general contractors could not make a profit unless they made their customers cry. Calculating a unified solar-lunar-earth general circulation model that unifies the surface atmospheric general circulation model and the subsurface general circulation model will contribute to promoting the development of computers and elements. [Industrial Applicability]

[0016] Recently, some electric power companies have made profits by reducing power generation costs through the restart of nuclear power plants, while others have made profits by not restarting nuclear power plants and instead benefiting from rising electricity prices linked to fossil fuel prices. The Ministry of the Environment's Nuclear Regulation Authority has stated that "restarting nuclear power plants is a decision that electric power companies make." The restart of nuclear power plants depends on the circumstances of each power company. If Japan were to face an energy or economic crisis, the media, experts, ordinary people, and local residents would all be convinced and support the restart of nuclear power plants. Since the reactor of the present invention generates electricity while reducing the accumulated spent nuclear fuel from conventional light water reactors, it would be fine if the reactor of the present invention could be put into full operation once the current light water reactors reach their limit. We will continue to conduct detailed research to give people hope that spent nuclear fuel can be reduced. Many Japanese people believe that the United States, the United Nations, Japanese civil rights activists, and the opposition parties will do something about it. They pretend to believe that. They pretend that they think something will be done, that something will happen. Many of us Japanese are completely indifferent, assuming that something will happen, and we would not be able to live our daily lives in peace if they didn't. Current nuclear reactors were developed in an era when natural disasters were relatively rare and when the population was growing. A large amount of spent oxide nuclear fuel from light water reactors is stored. It is being pushed around from all sides. For the past 20 years or so, there have been complaints about final disposal, but in a few decades, with the population declining, it is likely that a final disposal site will be easily secured. Even so, it would be desirable to come up with some kind of method for reducing the volume of spent oxide nuclear fuel. We will search for nuclear reactors and decide whether to build them based on the premise that population density will be low due to population decline, and that it is unknown when, where, and what magnitude an earthquake will occur.We will want a nuclear reactor that will not be economically fatal if it breaks down, and that will not be fatal to human lives. It seems that wages have to be raised because of the upward trend in the Japanese economy. If we think about it logically, we will not be able to allocate funds to restarting nuclear power plants. As for new nuclear reactors, the Ministry of Education seems to be promoting them, so it would be normal for the Ministry to look at the track record of nuclear power plants it has built, determine that the corporation can operate commercially, and then notify the Ministry of International Trade and Industry before proceeding with construction. The reactor of this invention will be used to solve the issue of spent nuclear fuel disposal, which has a budget of 3.5 trillion yen. Since the responsibility for spent nuclear fuel disposal is small compared to the amount of money involved, the relevant ministries and agencies will work hard. The critical mass of nuclear fuel with a low fissile content is larger, so increasing the mass to make it critical results in a greater explosive force than a high-purity U235 bomb. It can be used as a self-defense weapon. It can be used for landmines in landlocked countries and for underwater self-propelled explosives in maritime countries. Targeted drones for attack, interception, defense, and transport can be used to shoot down aircraft of unknown nationality through electromagnetic interference. It can be a cheap defense method for weaker nations. Since nuclear-weapon states appear to be reaching an agreement behind closed doors, even non-nuclear-weapon states need to have some kind of means of communication. It is a reasonable idea for the President of the United States to ask allies to defend themselves. It is also natural for allies to respond. Both top-ranking and presidential dictatorships pose a slight concern of sudden collapse. Therefore, independent defense at low cost is necessary. Defensive weapons must not be perceived as a threat by other countries. For this reason, they should be heavy and difficult to transport through the air. An advanced version of a nuclear reactor, based on this invention, would be a heavy weapon. Furthermore, independent defense also requires software to manage soldiers. In Germany, there is a debate over whether to use Windows or Linux. Many current weapons incorporate Windows (which notifies the user but enters restart mode, causing slowdowns and freezing. Restarting is not possible without Windows' consent; this is often pointed out in the inventor's patents), so weapons can become inoperable without the user's knowledge. F-35s and helicopters could be shot down. Many government submissions require Windows. Windows dominates Japan. Since many Linux and Office equivalents are free (free downloads on Window Forest), it would be a good idea for large corporations (local governments) that receive tax deductions to distribute old, cheap computers with email and internet connections for free. This would be more meaningful than handing out 40,000 yen. A 1 trillion yen budget over 10 years would also contribute to economic improvement. E-tax, pensions, and health insurance would also be built in. It could be called a Windows backup. It could also be done in collaboration with Japan and the EU. The invented radioactive waste will be dumped off the coast of the Japan Trench off the coast of Tohoku. The invented reactor will be installed inside a nuclear reactor vessel or on the site. Clearing the land will take an incredibly long time and cost a lot of money. After the nuclear fuel is removed from the decommissioned nuclear aircraft carrier, it will be sent to a trench in Hanford, Washington, in the northernmost state. It's unclear where and how the spent nuclear fuel (high in plutonium-238, making reprocessing difficult) and pressure vessels will be disposed of. For now, it will likely be postponed for a hundred years. In a hundred years, it will probably be postponed for another hundred years. If the Japanese population were to decrease to the point of becoming an endangered species, no one would complain about radioactive waste or asbestos, as long as it was located far from residential areas. Therefore, they argue, now is the time to receive compensation at a final disposal site. [Brief explanation of the drawings]

[0017] [Figure 1] Schematic diagram of a heavy noble gas-cooled reactor. [Figure 2] Schematic diagram of a heavy noble gas-cooled reactor with starter. [Figure 3] Diagram of the disposal state of radioactive waste dump bodies. [Explanation of symbols]

[0018] 200 is the bottom core 300 is an accelerator 301 is a mixed proton beam tube 1001 is a plutonium-enriched phisium alloy nuclear fuel 2001 is a light water reactor fissium alloy nuclear fuel 3000 is a cylindrical shielding container 4000 is a heavy rare gas coolant 5001 is an A-type thin disc 5002 is a B-type thin disc

Claims

1. In a nuclear reactor consisting of a basic core and stacked control plates, The basic core consists of a central core, a bottom core (200), and a heavy noble gas coolant (4000). The central core is made up of multiple stacks of the following nuclear fuel assemblies in the vertical direction: The nuclear fuel assembly comprises a cylindrical central nuclear fuel section and a cylindrical peripheral fuel section surrounding the central nuclear fuel section, The central nuclear fuel section is made of plutonium-enriched phisium alloy nuclear fuel (1001) clad in stainless steel. The highly plutonium-enriched fissium alloy nuclear fuel (1001) is obtained by increasing the plutonium enrichment of the light water reactor fissium alloy nuclear fuel (2001), or by simply processing spent nuclear fuel whose plutonium enrichment has been increased by burning the nuclear reactor, The diameter of the central nuclear fuel section is 100 cm and the height is less than 30 cm. The peripheral fuel section is made of light water reactor fissium alloy nuclear fuel (2001) clad with stainless steel. The radial thickness of the peripheral fuel section is 20 cm, and its height is the same as that of the central nuclear fuel section. The bottom core (200) forms the bottom of the central core, has a thickness of 20 cm, and is made by covering the light water reactor phsium alloy nuclear fuel (2001) with stainless steel. The laminated control plate group is composed of a number of A-type thin disks (5001) and a number of B-type thin disks (5002), The A-type thin disk (5001) is made of light water reactor fissium alloy nuclear fuel (2001) clad with stainless steel and shaped into a thin disk with a thickness of 5 cm or less. Type B thin disk (5002) is a nuclear fuel assembly in the form of a thin disk with a thickness of 3 cm or less. The reactor is covered with a stainless steel cylindrical shielding vessel (3000) equipped with a filter-equipped vent, A heavy rare gas coolant (4000) in a cylindrical shielding vessel (3000) is caused to flow to remove heat generated in the reactor; A heavy noble gas cooled nuclear reactor characterized by the fact that the plutonium enrichment of the highly plutonium-enriched fissium alloy nuclear fuel (1001) at the start of operation is 10 wt% to 8 wt%, the state of the basic core is subcritical at a maximum delayed neutron fraction below delayed criticality, and the loading type and number of stacked control plates are adjusted for operation.

2. A nuclear power plant comprising the reactor of claim 1 housed in a cylindrical shielding vessel (3000), and a lightweight gas turbine and a lightweight generator housed in a weatherproof building, The cylindrical shielding container (3000) of claim 1 is sealed with a reinforced concrete artificial ground bottom, concrete sides, and a weatherproof roof, The lightweight gas turbine, which is directly connected to a lightweight generator on the same shaft, consists of stationary blades made of lightweight materials, a divergent case made of lightweight materials, and moving blades made of lightweight materials. The lightweight generator has a rotor coil made of aluminum and a case covering the rotor made of duralumin.

2. An earthquake-resistant nuclear power plant according to claim 1, wherein the center of gravity of the reactor is below the surrounding ground surface.

3. In a heavy rare gas cooled reactor in which the state of the basic core of claim 1 is subcritical with a maximum delayed neutron rate less than delayed criticality, and an A-type thin plate disk (5001) is installed on the central core without a B-type thin plate disk (5002), The accelerator (300) installed on the outer periphery of the cylindrical shielding vessel (3000) generates a mixed proton beam of 30 MeV to 50 MeV, and the mixed proton beam is irradiated from the mixed proton beam tube (301) to the light water reactor fissium alloy nuclear fuel (2001) in the central core by an activation device. A heavy noble gas cooled reactor with a startup device, characterized by starting up a heavy noble gas cooled reactor.

4. In dumping radioactive waste discharged from claim 1 or 2 on the surface of the Pacific plate on the subducting side of the boundary between the North American plate and the Pacific plate, north of Kinkazan in the Japan Trench, in Japan's exclusive economic zone, Mixing the radioactive waste with iron or activated heavy metals to make the specific gravity heavier than the specific gravity of serpentine to produce heavy radioactive waste; A heavy radioactive waste dump characterized in that the above-mentioned heavy radioactive waste is filled into a stainless steel container with a rust-proofed surface.

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