公开(公告)号：US10762995B2

公开(公告)日：2020-09-01

申请号：US15520594

申请日：2015-10-05

Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE

Inventor： Young In Kim ,  Keung Koo Kim ,  Jae Joo Ha ,  Tae Wan Kim ,  Hun Sik Han ,  Kyung Jun Kang

IPC: G21C15/18 ,  G21C1/32 ,  G21D1/00 ,  F22D5/34 ,  F22D11/02 ,  G21C1/09 ,  G21C1/18 ,  F01K13/02 ,  F22B1/16 ,  F22B1/18 ,  F22B35/10 ,  G21C13/024 ,  G21D3/06

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 exchanger to the steam generator through the water supplying pipe.

公开(公告)号：US10706974B2

公开(公告)日：2020-07-07

申请号：US15100224

申请日：2014-12-02

Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE

Inventor： 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

IPC: G21C9/012 ,  G21C15/18 ,  G21C9/004

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.

公开(公告)号：US10276270B2

公开(公告)日：2019-04-30

申请号：US15030578

申请日：2014-11-25

Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE

Inventor： Young Soo Kim ,  Young In Kim ,  Cheon Tae Park ,  Ju Hyeon Yoon ,  Tae Wan Kim ,  Keung Koo Kim ,  Jae Joo Ha

IPC: G21D3/10 ,  G21C17/00 ,  G21C17/01 ,  G21C17/02 ,  G21C17/06 ,  G21C19/20 ,  G21C17/003 ,  G21C17/007 ,  G21C17/013 ,  G21C17/022 ,  G21C17/104 ,  G21C17/108 ,  G21C17/112 ,  G21C19/07 ,  G21C19/40 ,  G21C19/34 ,  G21C15/24 ,  G21C1/32 ,  G21C15/243 ,  G21C15/18 ,  G21D1/04 ,  G21C15/247 ,  G21C15/28

Abstract: The present invention discloses a nuclear reactor coolant pump that does not rely on an electric motor, but is operated by means of driving force generated inside a nuclear power plant, so a to be capable of maintaining the safety of the nuclear reactor when the nuclear reactor is operating normally and also in the event of an accident in the nuclear reactor. The nuclear reactor coolant pump comprises: a pump impeller rotatably installed in a first fluid passage of a nuclear reactor coolant system to circulate a first fluid inside the nuclear reactor coolant system; a drive unit receiving steam from a steam generator to generate driving force to rotate the pump impeller, and rotating about the same rotating shaft as the pump impeller to transfer the generated driving force to the pump impeller; and a steam supplying unit forming a passage between the steam generator and the drive unit to supply at least a portion of the steam released from the steam generator to the drive unit.

公开(公告)号：US10319481B2

公开(公告)日：2019-06-11

申请号：US14272421

申请日：2014-05-07

Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE

Inventor： Young In Kim ,  Soo Jai Shin ,  Han Ok Kang ,  Keung Koo Kim ,  Ju Hyeon Yoon ,  Tae Wan Kim ,  Jae Joo Ha

IPC: G21C15/18 ,  G21C13/02 ,  G21C15/12 ,  G21D3/06

Abstract: Provided is a passive containment spray system including: a spray coolant storage unit that communicates with a containment accommodating a reactor vessel and maintains equilibrium of pressure between the spray coolant storage unit and the containment; a spray pipe that is installed within the containment in such a manner that when an accident occurs, a coolant supplied from the spray coolant storage unit is sprayed into the containment through the spray pipe due to an increase in pressure within the containment; and a connection pipe one end of which is inserted into the spray coolant storage unit in such a manner as to provide a flow path along which the coolant flows and the other end of which is connected to the spray pipe in such a manner that the coolant is passively supplied to the spray pipe through the connection pipe therein.

公开(公告)号：US10325688B2

公开(公告)日：2019-06-18

申请号：US15327355

申请日：2015-07-22

Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE

Inventor： Young In Kim ,  Keung Koo Kim ,  Ju Hyeon Yoon ,  Jae Joo Ha ,  Tae Wan Kim ,  Cheon Tae Park ,  Seung Yeob Ryu ,  Han Ok Kang ,  Young Min Bae ,  Joo Hyung Moon ,  Hun Sik Han ,  Kyung Jun Kang ,  Soo Jai Shin ,  Seo Yoon Jung ,  Young Soo Kim

IPC: G21C15/18 ,  G21C1/32

Abstract: The present invention relates to a passive heat removal system which circulates cooling fluid to a steam generator via a main water supply line connected to the lower inlet of the steam generator, and a main steam pipe connected to the top outlet of the steam generator, to remove sensible heat of a nuclear reactor coolant system and residual heat of a core. The heat removal system comprises supplementary equipment for receiving surplus cooling fluid or for supplying supplementary cooling fluid in order to maintain the flow rate of the cooling fluid within a predetermined range. The supplementary equipment comprises: a supplementary tank, installed at a height between the lower inlet and the top outlet of the steam generator; a first connection pipe, connected to the main steam pipe and the supplementary tank; and a second connection pipe, connected to the supplementary tank and the main water supply pipe.

公开(公告)号：US10468143B2

公开(公告)日：2019-11-05

申请号：US14466744

申请日：2014-08-22

Applicant: Korea Atomic Energy Research Institute

Inventor： Seo Yoon Jung ,  Young In Kim ,  Jae Seon Lee ,  Keung Koo Kim ,  Tae Wan Kim ,  Jong Wook Kim

IPC: G21C7/14 ,  G21C1/08 ,  G21C7/12 ,  G21C1/32 ,  G21C3/326 ,  G21C7/10 ,  G21D3/04

Abstract: Disclosed are an in-vessel control rod drive mechanism and a nuclear reactor with the same. The in-vessel control rod drive mechanism includes a control rod drive mechanism for regulating and a control rod drive mechanism for shutdown provided at an upper or lower space of a reactor core to insert or withdraw a regulating rod and a shutdown rod into/from the reactor core based on an operation state of the nuclear reactor, wherein the control rod drive mechanism for regulating and the control rod drive mechanism for shutdown are alternately arranged in the vertical direction. Therefore, a space of containment can be minimized due to the installation of the in-vessel control rod drive mechanism, and thus a rod ejection accident can be prevented, and a loss-of-coolant accident can be reduced.

公开(公告)号：US10229762B2

公开(公告)日：2019-03-12

申请号：US14271316

申请日：2014-05-06

Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE

Inventor： Young In Kim ,  Keung Koo Kim ,  Young Min Bae ,  Ju Hyeon Yoon ,  Jae Joo Ha ,  Won Jae Lee ,  Tae Wan Kim

IPC: G21C15/18 ,  G21C13/02 ,  G21C15/12 ,  G21D3/06

Abstract: The present disclosure provides a cooling system of an emergency cooling tank, which enables long-term cooling without refilling cooling water, in case of the change in a quantity of heat transferred to the emergency cooling tank according to a lapse of time upon an occurrence of an accident of a nuclear reactor, and a nuclear power plant having the same. The emergency cooling tank cooling system includes an emergency cooling tank, a heat exchanging device installed to be exposed to an outside of the emergency cooling tank to operate in air, and configured to externally emit such that the operation of the emergency cooling tank is continued even without refilling the cooling water, and an opening and closing unit installed at an upper portion of the emergency cooling tank to be located higher than a water level of the cooling water.

公开(公告)号：US10811147B2

公开(公告)日：2020-10-20

申请号：US15108767

申请日：2014-12-29

Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE

Inventor： 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

IPC: G21C15/18 ,  G21C1/32 ,  G21C9/012 ,  G21C15/243 ,  G21D1/00 ,  F22B1/02 ,  G21C15/26 ,  G21C15/08

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.

公开(公告)号：US09761334B2

公开(公告)日：2017-09-12

申请号：US14172808

申请日：2014-02-04

Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE

Inventor： Young In Kim ,  Keung Koo Kim ,  Cheon Tae Park ,  Seung Yeop Yoo ,  Young Min Bae ,  Joo Hyung Moon ,  Soo Jai Shin ,  Han Ok Kang ,  Jun Lee ,  Won Jae Lee ,  Tae Wan Kim ,  Keun Bae Park ,  Ju Hyeon Yoon

IPC: G21C15/18 ,  G21D3/06

CPC classification number: G21C15/18 ,  G21D3/06 ,  Y02E30/40

Abstract: The present disclosure may disclose a multi stage safety injection device and a passive safety injection system having the same, including a safety injection tank formed to contain coolant to be injected into a reactor vessel by a gravitational head of water when an accident occurs in which the pressure or water level of the reactor vessel is decreased, a pressure balance line connected to the reactor vessel and safety injection tank to form a pressure balance state between the reactor vessel and the safety injection tank, a safety injection line connected to a lower end portion of the safety injection tank and the reactor vessel to inject coolant to the reactor vessel in a pressure balance state between the reactor vessel and the safety injection tank, and a flow control line extended from the safety injection line to an inner portion of the safety injection tank, and provided with safety injection ports into which coolant is injected at predetermined heights, respectively, to reduce the flow rate of coolant injected into the reactor vessel step by step according to the water level reduction of the safety injection tank, in order to inject coolant to the reactor vessel at multi stages.