ーーー
About cold fusion technology, which is a different technology from this NEWS.
Cold fusion power generation. As of 2024/02/11, we are generating electricity using boiler technology using hydrogen at a temperature of around 1,000 degrees. It is safe because no radioactive materials are used, and no radioactivity is emitted even when this fusion reactor is operated.
https://www.facebook.com/masahiro.ishizuka.54/videos/1079089120053079?locale=ja_JP
https://www.linkedin.com/embed/feed/update/urn:li:ugcPost:7162330520121528320
https://www.youtube.com/results?search_query=%E5%B8%B8%E6%B8%A9%E6%A0%B8%E8%9E%8D%E5%90%88%E7%99%BA %E9%9B%BB
It has been revealed that the Japan Atomic Energy Agency will conduct a demonstration test next month to reproduce a situation in which all power is lost during operation of a next-generation nuclear reactor, a ``high-temperature gas reactor,'' to safely shut down the reactor. Confirm that the core will not melt even if the cooling function of the reactor is stopped when operating at 100% power. We will verify the safety of high-temperature gas furnaces and use this as a stepping stone to practical application.
In addition to generating electricity, high-temperature gas reactors can also produce hydrogen, a carbon-free energy source, using the high-temperature heat emitted from nuclear fuel. Unlike conventional nuclear power plants, which are cooled with water, high-temperature gas reactors are cooled with helium gas, so in principle, hydrogen explosions do not occur. It is highly safe because it has a mechanism that naturally radiates heat even if the cooling function stops.
The test will be conducted in late March at the organization's experimental reactor ``HTTR'' (Oarai Town, Ibaraki Prefecture). The circulation of helium gas is intentionally stopped to recreate a state where power is lost. During the test, the temperature inside the reactor is expected to reach approximately 1,000 degrees, but the fuel is designed to withstand temperatures of 1,600 degrees. In the event of an abnormality, the test will be stopped to ensure safety.
By fiscal 2021, the organization has conducted two tests in which the cooling function was lost during operation at a 30% low output. Although the temperature inside the reactor reached approximately 370 degrees, we succeeded in safely shutting down the reactor. If safety is confirmed in this test, we plan to have full-scale discussions with the Nuclear Regulation Authority about applying for an installation permit to construct a hydrogen production facility, which is currently undeveloped.
Masayuki Shinozaki, director of the high-temperature engineering test and research reactor at the same organization, said, ``High-temperature gas reactors are attracting attention around the world as they work towards realizing a decarbonized society.We would like to demonstrate their superior safety through testing.''
ーーーー
https://www.yomiuri.co.jp/science/20240206-OYT1T50175/
Reproducing the Noto shaking and testing the seismic isolation performance of next-generation nuclear reactors...Suppressing vibrations with a floating building
An experiment in which a box-shaped pool with a model of a reactor building (center) floating in it is being shaken (on the 6th in Miki City, Hyogo Prefecture) (Photo by Masahiro Sugimoto)
Click here for the video
On the 6th, an experiment was conducted at E-Defense (Miki City, Hyogo Prefecture), one of the world's largest seismic testing facilities, to reproduce the violent shaking of the Noto Peninsula Earthquake and confirm the seismic isolation performance of the building of a next-generation small nuclear reactor. Ta.
The Ministry of Economy, Trade and Industry has set a goal of operating a demonstration reactor for the "Small Modular Reactor" (SMR), which generates electricity by using a single or multiple connected low-output nuclear reactors, in the 2040s, and the Japan Atomic Energy Agency and others are We are researching seismic isolation structures for SMR buildings.
We are currently developing a floating seismic isolation structure that allows the building to float on a huge pool filled with water. This was my first time conducting an experiment using meters.
When a model was floated in an experimental pool (16 meters long, 4 meters wide, and 5 meters high) and the shaking observed during the Noto Peninsula earthquake was reproduced, it was confirmed that the vibrations transmitted to the building could be significantly suppressed. It is said that the air admitted to the bottom of the building acts like a spring, absorbing water waves.
Hiroki Hayafune, deputy director of the Fast Reactor and Advanced Reactor Research and Development Division at the same organization, said, ``The floating type is strong against earthquakes and can be applied to all types of reactors.We would like to advance our research so that we can propose practical application.'' talked.
ーーーー
https://www.yomiuri.co.jp/science/20231030-OYT1T50095/
Cooperation with Poland in research and development of next-generation nuclear reactor "high-temperature gas reactor", human resources development, etc...Memorandum of understanding to be signed soon
Research and development of next-generation nuclear reactor “high temperature gas reactor”The Japanese and Polish governments signed a memorandum of cooperation regardingIt turns out that the deal will be concluded soon.With Poland aiming to operate an experimental reactorStrengthening cooperation in human resources development, facility construction, etc.By doing so, we can maintain Japan's high technological capabilities.・The aim is to promote development and spread.Minister of Education, Culture, Sports, Science and Technology Moriyama will announce the announcement as early as this month.With Polish Minister of Climate and Environment MoscowMeetings were held online and a memorandum of understanding signing ceremony was held.conduct. The memorandum stipulates the promotion of human resource development, capacity development, and sharing of knowledge and know-how at research institutions in both countries. The two sides also plan to confirm cooperation in building research facilities for storing thermal energy extracted from gas furnaces and producing hydrogen. In addition to agreeing on the handling of intellectual property such as research data, the agreement also calls for the two governments to confirm the status of cooperation at least once a year, either face-to-face or online.
High-temperature gas reactors are safer than conventional light water reactors and are capable of producing hydrogen, a decarbonized energy source, so competition to develop them is intensifying worldwide.
Japan aims to start operation of a demonstration reactor in the 2030s, one step before a commercial reactor. The experimental reactor "HTTR" (Oarai Town, Ibaraki Prefecture) owned by the Japan Atomic Energy Agency has led the world in research achievements, achieving criticality for the first time in 1998, but it has been in operation for more than 10 years due to the Great East Japan Earthquake. has been suspended, and there are concerns that research will stagnate.
For this reason, the organization is actively promoting international cooperation, and has agreed to joint development of nuclear fuel with a British research institute that is developing a demonstration reactor. In November last year, the company also reached an agreement on development cooperation with a Polish research institute aiming to start operating an experimental reactor in the late 2020s.
The government hopes that by confirming cooperation with Poland at the government level through the memorandum, it will lead to the promotion of the domestic development system.
◆High-temperature gas reactor = A nuclear reactor that uses helium gas to cool the core. Helium gas is difficult to cause chemical reactions even at high temperatures, and does not cause pipe corrosion or hydrogen explosions. Because highly heat-resistant materials are used for the nuclear fuel and reactor core, the possibility of serious accidents such as core meltdown is said to be extremely low. Another feature is that hydrogen can be produced from the high heat extracted.
The memorandum stipulates the promotion of human resource development, capacity development, and sharing of knowledge and know-how at research institutions in both countries. The two sides also plan to confirm cooperation in building research facilities for storing thermal energy extracted from gas furnaces and producing hydrogen. In addition to agreeing on the handling of intellectual property such as research data, the agreement also calls for the two governments to confirm the status of cooperation at least once a year, either face-to-face or online.
High-temperature gas reactors are safer than conventional light water reactors and are capable of producing hydrogen, a decarbonized energy source, so competition to develop them is intensifying worldwide.
Japan aims to start operation of a demonstration reactor in the 2030s, one step before a commercial reactor. The experimental reactor "HTTR" (Oarai Town, Ibaraki Prefecture) owned by the Japan Atomic Energy Agency has led the world in research achievements, achieving criticality for the first time in 1998, but it has been in operation for more than 10 years due to the Great East Japan Earthquake. has been suspended, and there are concerns that research will stagnate.
For this reason, the organization is actively promoting international cooperation, and has agreed to joint development of nuclear fuel with a British research institute that is developing a demonstration reactor. In November last year, the company also reached an agreement on development cooperation with a Polish research institute aiming to start operating an experimental reactor in the late 2020s.
The government hopes that by confirming cooperation with Poland at the government level through the memorandum, it will lead to the promotion of the domestic development system.
◆High-temperature gas reactor = A nuclear reactor that uses helium gas to cool the core. Helium gas is difficult to cause chemical reactions even at high temperatures, and does not cause pipe corrosion or hydrogen explosions. Because highly heat-resistant materials are used for the nuclear fuel and reactor core, the possibility of serious accidents such as core meltdown is said to be extremely low. Another feature is that hydrogen can be produced from the high heat extracted.
0 コメント:
コメントを投稿