Patents Assigned to Korea Atomic Energy Research Institute
  • Patent number: 10860751
    Abstract: The present invention relates to a cutting process simulation method and a system thereof which can efficiently optimize the decommissioning process of a nuclear facility, thereby saving costs and time and ensuring safety in the decommissioning process. The cutting process simulation system, according to one embodiment of the present invention, may comprise: a display unit: and a control unit which cuts a cutting target in a nuclear facility by using a design program, displays the cut shape on the display unit, and predicts the amount of secondary waste generated in the process of cutting the cutting target.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: December 8, 2020
    Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Dong Jun Hyun, Byung Seon Choi, Kwan Seong Jeong, Jong Hwan Lee, Ik June Kim, Geun Ho Kim, Jei Kwon Moon
  • Patent number: 10850251
    Abstract: A radioactive cesium adsorbent includes photocatalyst particles and Prussian blue. The ferric ions of the Prussian blue are reduced to ferrous ions by activation of the photocatalyst particles. A method of removing radioactive cesium using the radioactive cesium adsorbent includes preparing a composition comprising photocatalyst particles and Prussian blue; preparing a precursor solution by mixing radioactive cesium and the composition prepared in the preparing of a composition; and reducing ferric ions of the Prussian blue to ferrous ions by activating the photocatalyst particles in the precursor solution prepared in the preparing of a precursor solution.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: December 1, 2020
    Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Hyuncheol Kim, Soonhyun Kim, Minsun Kim, Sang Kyoo Lim, Wanno Lee
  • Publication number: 20200368820
    Abstract: Disclosed are a method of manufacturing a uranium target, the method including (a) a step of preparing a conjugate including a matrix and a uranium target green compact formed in the matrix; and (b) a step of performing thermo-mechanical treatment through additional heat treatment at 530° C. to 600° C. during a hot rolling pass in a process of hot-rolling the conjugate, and a method of extracting radioactive Mo-99 using the uranium target.
    Type: Application
    Filed: January 27, 2020
    Publication date: November 26, 2020
    Applicant: Korea Atomic Energy Research Institute
    Inventors: Ki Nam KIM, Sung Chan PARK, Yong Jin JEONG, Kyu Hong LEE, Sung Hwan KIM, Tae Won CHO, Jong Man PARK
  • Patent number: 10844394
    Abstract: An AhpF protein has thioredoxin reductase, peroxidase, and chaperone activities and is derived from Pseudomonas aeruginosa, and a use therefor. By using a novel activity of the AhpF of Pseudomonas aeruginosa according to the present invention, it is possible to produce a plant having strong resistance to various environmental stresses such as oxidative stress or heat stress, thereby making it possible to contribute to increasing crop productivity and mass production of useful constituents. In addition, it is possible to prevent desertification and environmental pollution through the development of transformed plants having resistance to high temperatures and drying.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: November 24, 2020
    Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Byung Yeoup Chung, Sudhir Singh, Seung Sik Lee, Hyoung Woo Bai, Sung Beom Lee
  • Publication number: 20200363055
    Abstract: The present disclosure relates to an L-shaped header of a steam generator including a spiral heat transfer tube, and a coupling structure between the L-shaped header and the heat transfer tube, wherein an upper end and a lower end of a heat transfer tube assembly configured with a plurality of heat transfer tubes are vertically formed, and the upper and lower ends of the heat transfer tube assembly are vertically coupled to a bottom side or a top side of the header. Therefore, the heat transfer tubes constituting the same concentric circle may use the heat transfer tubes formed with the same shape, thereby improving the manufacturability of parts and reducing the manufacturing cost.
    Type: Application
    Filed: August 16, 2018
    Publication date: November 19, 2020
    Applicants: KOREA ATOMIC ENERGY RESEARCH INSTITUTE, KING ABDULLAH CITY FOR ATOMIC AND RENEWABLE ENERGY
    Inventors: Seongmin CHANG, Kangheon LEE, Yunbum PARK, Gyumahn LEE, Jongwook KIM, Kyeonghoon JEONG, Jaeseon LEE, Hanbum SURH, Kwanghyun AHN, Jinseok PARK, Keungkoo KIM
  • Publication number: 20200335232
    Abstract: A safety injection device includes a containment building, a reactor coolant system provided inside the containment building and accommodating a reactor coolant formed to carry heat energy generated according to fission of fuel, a cooling water storage section accommodating cooling water injected into the reactor coolant system, a power producing section producing power with steam discharged from the reactor coolant system in case of an accident, a steam supply pipe transmitting steam discharged from the reactor coolant system to the power producing section, a steam discharge pipe discharging steam drove the power producing section and a safety injection line supplying cooling water accommodated in the cooling water storage section to the inside of the reactor coolant system.
    Type: Application
    Filed: August 31, 2018
    Publication date: October 22, 2020
    Applicants: KOREA ATOMIC ENERGY RESEARCH INSTITUTE, KING ABDULLAH CITY FOR ATOMIC AND RENEWABLE ENERGY
    Inventors: Youngin KIM, Hyungi YOON, Seungyeob RYU, Youngmin BAE, Joohyung MOON, Hunsik HAN, Soojai SHIN, Cheongbong CHANG, Seok KIM, Junewoo KEE, Hyunjun CHO, Minkyu LEE, Bonghyun CHO
  • Patent number: 10811148
    Abstract: The application provides a self-diagnosis and accident-handling unmanned nuclear reactor, which: can passively cool down excessively generated heat without an operation of an operator when a malfunction of the nuclear reactor has occurred, wherein a cooling operation for safety measures can be carried out in a completely passive manner without a separate control command by a change in environmental conditions such as the structure and pressure of the nuclear reactor; and has a simpler structure compared to that of a conventional nuclear reactor safety system. It also provides a self-diagnosis and accident-handling unmanned nuclear reactor, which performs heat exchange by using a two-phase heat transfer mechanism, wherein heat exchange performance is maximized by introducing a spray-type heat exchanger having an optimized structure in which channels are three-dimensionally arranged, and can also easily and passively control heat exchange without a separate control means by using saturated steam pressure.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: October 20, 2020
    Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventor: Sung-Jae Yi
  • Patent number: 10811147
    Abstract: The present invention provides a passive residual heat removal system and an atomic power plant comprising the same, the passive heat removal system comprising: a plate-type heat exchanger for causing heat exchange between a primary system fluid or a secondary system fluid which, in order to remove sensible heat from an atomic reactor cooling material system and residual heat from a reactor core, has received the sensible heat and the residual heat, and a cooling fluid which has been introduced from outside of a containment unit; and circulation piping for connecting the atomic reactor cooling material system to the plate-type heat exchanger, thereby forming a circulation channel of the primary system fluid, or connecting a steam generator, which is arranged at the boundary between the primary and secondary systems, to the plate-type heat exchanger, thereby forming a circulation channel of the secondary system fluid.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: October 20, 2020
    Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Young In Kim, Keung Koo Kim, Jae Joo Ha, Ju Hyeon Yoon, Young Min Bae, Soo Jai Shin, Hun Sik Han, Kyung Jun Kang, Tae Wan Kim
  • Patent number: 10808307
    Abstract: The present disclosure relates to a chromium-aluminum binary alloy with excellent corrosion resistance and a method of producing the same, and more particularly to a chromium-aluminum binary alloy with excellent corrosion resistance. The chromium-aluminum binary alloy may be easily produced and has ductility, thus being highly applicable as a coating material for a material requiring high-temperature corrosion resistance and wear resistance.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: October 20, 2020
    Assignee: Korea Atomic Energy Research Institute
    Inventors: Hyun Gil Kim, Il Hyun Kim, Yang-Il Jung, Dong Jun Park, Jung Hwan Park, Jeong-Yong Park, Yang-Hyun Koo
  • Patent number: 10811152
    Abstract: The present invention relates to a plate heat exchanger and provides a heat exchanger and a nuclear power plant comprising same, the heat exchanger comprising: a plate unit having multiple plates overlapping one another; a flow path unit, which forms flow paths having fluids flowing therein by processing at least parts of the respective plates; and a detection flow path formed between the multiple plates so as to allow the fluids leaking from the flow paths to flow thereinto and formed so as to detect the leakage of the fluids from the flow paths.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: October 20, 2020
    Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Young In Kim, Keung Koo Kim, Ju Hyeon Yoon, Suhn Choi, Hun Sik Han, Han Ok Kang
  • Patent number: 10811149
    Abstract: A passive natural circulation cooling system according to the present invention can comprise: a passive condensation tank formed to accommodate cooling water; and a condensate water recirculation device provided at the inner part or upper part of the passive condensation tank, and condensing the cooling water such that the cooling water circulates inside the passive condensation tank. The condense water recirculation device can include: a duct extending upwards from the upper part of the passive condensation tank; and a plurality of partition plates provided inside the passive condensation tank or the duct.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: October 20, 2020
    Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Kihwan Kim, Taesoon Kwon, Sungwon Bae
  • Patent number: 10762995
    Abstract: The present disclosure provides a stopped cooling system including: a steam line connecting portion connected to a steam line so as to receive cooling water through the steam line connected to an outlet of a steam generator; a stopped cooling heat exchanger for receiving cooling water that enters the stopped cooling system through the steam line connecting portion, and discharging same through a passage of the heat exchanger; a stopped cooling pump activated to perform stopped cooling of the nuclear reactor upon normal stoppage of the nuclear reactor after primary cooling of the nuclear reactor cooling system or when an accident occurs, and for forming a circulating flow of cooling water that circulates between the steam generator and the stopped cooling heat exchanger; and a water supplying pipe connecting portion connected to the heat exchanger passage and a water supplying pipe, which is connected to the inlet of the steam generator, so as to supply the cooling water cooled in the stopped cooling heat exch
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: September 1, 2020
    Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Young In Kim, Keung Koo Kim, Jae Joo Ha, Tae Wan Kim, Hun Sik Han, Kyung Jun Kang
  • Patent number: 10762997
    Abstract: A decontamination method that includes the steps of decontaminating an object containing radioactive contaminated metals or alloys with a chemical decontamination agent including sulfuric acid (H2SO4) and forming a Ba or Sr precipitate by adding a Ba or Sr cation and a hydroxylion or halogen anion salts to the decontamination waste water.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: September 1, 2020
    Assignee: Korea Atomic Energy Research Institute
    Inventors: Sang Yoon Park, Hui-Jun Won, Seonbyeong Kim, Wangkyu Choi, Mansoo Choi, Chong-Hun Jung, In-Ho Yoon, JeikWon Moon, Jun Young Jung, Jungsoon Park
  • Publication number: 20200273589
    Abstract: The present disclosure relates to a radioactive material reduction facility, including a containment, a boundary section provided inside the compartment to partition an inner space of the containment into a first space for accommodating a reactor coolant system and a second space formed between the first space and the containment, and surround the reactor coolant system to prevent radioactive material discharged from the reactor coolant system or a line connected to the reactor coolant system inside the first space from being directly discharged into the second space during an accident, an in-containment refueling water storage tank (IRWST) installed between the first space and the second space and formed to accommodate refueling water, and a first discharge line formed to guide the flow of steam and radioactive material formed in the first space inside the boundary section into the in-containment refueling water storage tank.
    Type: Application
    Filed: October 24, 2018
    Publication date: August 27, 2020
    Applicants: KOREA ATOMIC ENERGY RESEARCH INSTITUTE, KING ABDULLAH CITY FOR ATOMIC AND RENEWABLE ENERGY
    Inventors: Kyungjun KANG, Jihan CHUN, Hanok KANG
  • Patent number: 10736929
    Abstract: The present invention relates to a method for preparing an herbal composition with increased fat-soluble polyphenols, an herbal composition prepared by the method, and a use of the composition. The herbal composition with increased fat-soluble polyphenols of the present invention is characterized by the significantly increased content of fat-soluble polyphenols including decursin, compared with the herbal composition of comparative example, and also demonstrates a significant anti-oxidative activity, immune cell activating effect, and cancer cell growth inhibitory effect, significantly reduces renal toxicity and liver toxicity induced by the anticancer agent cisplatin back so as to be almost normal condition, and significantly inhibits the intestinal crypt loss caused by irradiation, compared with the herbal composition of comparative example.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: August 11, 2020
    Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Sung-Kee Jo, Hae Ran Park, Uhee Jung, Ho Yong Lee, Hyang Hee Cho
  • Publication number: 20200234835
    Abstract: A coolant recirculation system of a nuclear power plant is provided that may include: a reactor vessel configured to accommodate a reactor core and a reactor coolant therein; a steam generator configured to transfer a gas, converted from a liquid phase to a gaseous phase by exchanging heat with the reactor coolant, to a turbine system; a pressurizer configured to control pressure of the reactor coolant in the reactor vessel; a primary system pressure reducing valve located above the pressurizer and configured to open at a predetermined pressure to discharge the reactor coolant into a containment building for rapid depressurization; and a moisture separator connected to the primary system pressure reducing valve to separate moisture. The moisture separator may separate the reactor coolant into a gaseous phase and a liquid phase. Then, the liquid phase reactor coolant may be returned to the reactor vessel to be recirculated.
    Type: Application
    Filed: January 15, 2020
    Publication date: July 23, 2020
    Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Jonghyuk LEE, Kyungdoo KIM, Kwiseok HA, Sungwon BAE, Seungwook LEE, Chiwoong CHOI, Jaeseok HEO
  • Publication number: 20200234836
    Abstract: Provided are a system and method for reducing the atmospheric release of radioactive materials caused by a severe accident. The system includes a steam generator disposed in a containment building, configured to generate steam by using heat of a coolant heated in a nuclear reactor, and connected to a turbine through a main steam line, a decontamination tank connected to the main steam line through a connection line and containing decontamination water for decontaminating the steam delivered from the steam generator and reducing atmospheric release of radioactive materials when a severe accident occurs, and a depressurizing power generation unit disposed on the connection line and configured to generate emergency power while depressurizing the steam delivered from the steam generator toward the decontamination tank when the severe accident occurs.
    Type: Application
    Filed: January 22, 2020
    Publication date: July 23, 2020
    Applicant: Korea Atomic Energy Research Institute
    Inventors: Joo-Hwan PARK, Sung Il KIM, Kwang Soon HA, Byeong Hee LEE
  • Patent number: 10705243
    Abstract: Disclosed is a nondestructive inspection system includes: a radiation source system generating different types of radiations and irradiating the generated different types of radiations toward an inspection object; a detector system detecting each of the radiations transmitted through the inspection object; a transfer system varying a position of the inspection object such that the radiations generated by the radiation source system are irradiated to the inspection object; and an image system generating an image regarding the inspection object on the basis of a detection result from the detector system, wherein the radiation source system comprises: an electron gun generating an electron beam; an electron accelerator accelerating the electron beam generated by the electron gun; and a target system selectively generating at least one of various types of radiations according to variables when the electron beam accelerated by the electron accelerator is irradiated thereto.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: July 7, 2020
    Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Byeongno Lee, Soomin Lee, Namho Lee, Moonsik Chae, Jungho Mun, Kyungmin Oh, Changgoo Kang, Hansoo Kim
  • Patent number: 10706974
    Abstract: The present invention discloses a passive cooling system of a containment building, to which a plate-type heat exchanger is applied. A passive cooling system of a containment building comprises: a containment building; a plate-type heat exchanger provided to at least one of the inside and the outside of the containment building and comprising channels respectively provided to the both sides of a plate so as to be arranged dividedly from each other such that the plate-type heat exchanger carries out mutual heat exchange between the internal atmosphere of the containment building and a heat exchange fluid while maintaining a pressure boundary; and a pipe connected to the plate-type heat exchanger by penetrating the containment building so as to form the path of the internal atmosphere of the containment building or the heat exchange fluid.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: July 7, 2020
    Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Young In Kim, Cheon Tae Park, Seung Yeob Ryu, Young Min Bae, Joo Hyung Moon, Soo Jai Shin, Hun Sik Han, Kyung Jun Kang, Young Soo Kim, Tae Wan Kim, Ju Hyeon Yoon, Keung Koo Kim, Jae Joo Ha
  • Publication number: 20200205407
    Abstract: The present invention relates to a composition for controlling plant diseases containing a limonene derivative as an active ingredient. In the present invention, the limonene derivatives have an effect of inhibiting the growth of Xanthomonas oryzae pv. Oryzae (Xoo), which is a pathogen mediating bacterial leaf blight, and Magnaporthe oryzae, which is a pathogen mediating rice blast, and it was confirmed in an experiment with respect to inhibition using volatility (i.e., in a state not being in direct contact with Xoo or M. oryzae) that the limonene derivatives have a growth inhibitory effect. Accordingly, the limonene derivatives have an inhibitory effect against the growth of Xoo and thus they can be effectively used as a composition for controlling plant diseases.
    Type: Application
    Filed: June 7, 2018
    Publication date: July 2, 2020
    Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Sungbeom Lee, Gun Woong Lee, Kwangwoo Jung, Byung Yeoup Chung, Seungsik Lee, Jin-Hong Kim, Hyoungwoo Bai, Yong-Dae Park