KR102647479B1 - System for coolant feeding to steam generator using coolant in PAFS tank and Method for coolant feeding using the same - Google Patents
System for coolant feeding to steam generator using coolant in PAFS tank and Method for coolant feeding using the same Download PDFInfo
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- KR102647479B1 KR102647479B1 KR1020220008609A KR20220008609A KR102647479B1 KR 102647479 B1 KR102647479 B1 KR 102647479B1 KR 1020220008609 A KR1020220008609 A KR 1020220008609A KR 20220008609 A KR20220008609 A KR 20220008609A KR 102647479 B1 KR102647479 B1 KR 102647479B1
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- Prior art keywords
- steam generator
- water tank
- pressure
- valve
- passive auxiliary
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000002826 coolant Substances 0.000 title description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 230000004308 accommodation Effects 0.000 claims abstract description 28
- 239000000498 cooling water Substances 0.000 claims abstract description 23
- 230000005484 gravity Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/08—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being steam
- F22B1/14—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being steam coming in direct contact with water in bulk or in sprays
- F22B1/143—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being steam coming in direct contact with water in bulk or in sprays in combination with a nuclear installation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
- F22B35/004—Control systems for steam generators of nuclear power plants
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
본 발명은 피동보조급수탱크의 냉각수를 이용한 증기발생기의 충수 시스템 및 이를 이용한 충수 방법에 관한 것이다. 본 발명에 따른 피동보조급수탱크의 냉각수를 이용한 증기발생기의 충수 시스템은, 격납건물; 상기 격납건물 내에 위치하는 반응기 및 증기발생기; 상기 격납건물 외부에 위치하며 냉각수를 수용하고 있는 수용공간이 형성되어 있는 상기 피동보조급수탱크; 상기 피동보조급수탱크 내에 위치하는 열교환기; 상기 증기발생기와 상기 열교환기 사이를 연결하며 폐루프를 형성하는 순환배관; 및 상기 수용공간과 상기 증기발생기를 연결하는 제1배관부를 포함하며, 상기 피동보조급수탱크는 상기 수용공간의 개폐여부를 결정하는 댐퍼를 포함한다.The present invention relates to a water filling system for a steam generator using cooling water from a passive auxiliary water tank and a water filling method using the same. The steam generator water filling system using the cooling water of the passive auxiliary water tank according to the present invention includes a containment building; A reactor and steam generator located within the containment building; The passive auxiliary water tank located outside the containment building and having a receiving space containing cooling water; A heat exchanger located within the passive auxiliary water tank; A circulation pipe connecting the steam generator and the heat exchanger to form a closed loop; and a first piping unit connecting the accommodation space and the steam generator, and the passive auxiliary water tank includes a damper that determines whether to open or close the accommodation space.
Description
본 발명은 피동보조급수탱크의 냉각수를 이용한 증기발생기의 충수 시스템 및 이를 이용한 충수 방법에 관한 것이다.The present invention relates to a water filling system for a steam generator using cooling water from a passive auxiliary water tank and a water filling method using the same.
피동형보조급수(PAFS) 계통은 정전 사고시 원자로의 열을 제거하는 계통으로 펌프와 같은 능동형기기 없이 피동형기기만으로 구성되어 있다.The passive auxiliary water supply (PAFS) system is a system that removes heat from the nuclear reactor in the event of a power outage and consists of only passive devices without active devices such as pumps.
그러나 주증기안전밸브의 개방고착사고가 발생하여 PAFS의 폐회로를 구성하지 못하거나, PAFS 내부에 있는 열교환기의 플러깅 발생 또는 열성층 형성으로 자연대류 미발생 등 다양한 요인으로 PAFS의 폐루프 냉각이 성공하지 못할 경우가 발생한다. 이러한 경우가 발생하면 열 제거 효율이 크게 감소하는 문제가 있다.However, the closed-loop cooling of the PAFS was successful due to various factors such as failure to form a closed loop of the PAFS due to an open sticking accident of the main steam safety valve, plugging of the heat exchanger inside the PAFS, or non-occurrence of natural convection due to the formation of a thermal layer. There are cases where it cannot be done. When this case occurs, there is a problem that heat removal efficiency is greatly reduced.
따라서 본 발명의 목적은 피동보조급수탱크의 냉각수를 이용한 증기발생기의 충수 시스템 및 이를 이용한 충수 방법을 제공하는 것이다.Therefore, the purpose of the present invention is to provide a water filling system for a steam generator using cooling water from a passive auxiliary water tank and a water filling method using the same.
상기 본 발명의 목적은 피동보조급수탱크의 냉각수를 이용한 증기발생기의 충수 시스템에 있어서, 격납건물; 상기 격납건물 내에 위치하는 반응기 및 증기발생기; 상기 격납건물 외부에 위치하며 냉각수를 수용하고 있는 수용공간이 형성되어 있는 상기 피동보조급수탱크; 상기 피동보조급수탱크 내에 위치하는 열교환기; 상기 증기발생기와 상기 열교환기 사이를 연결하며 폐루프를 형성하는 순환배관; 및 상기 수용공간과 상기 증기발생기를 연결하는 제1배관부를 포함하며, 상기 피동보조급수탱크는 상기 수용공간의 개폐여부를 결정하는 댐퍼를 포함하는 것에 의해 달성된다.The object of the present invention is to provide a water supply system for a steam generator using cooling water from a passive auxiliary water tank, including a containment building; A reactor and steam generator located within the containment building; The passive auxiliary water tank located outside the containment building and having a receiving space containing cooling water; A heat exchanger located within the passive auxiliary water tank; A circulation pipe connecting the steam generator and the heat exchanger to form a closed loop; and a first piping unit connecting the accommodation space and the steam generator, wherein the passive auxiliary water tank includes a damper that determines whether to open or close the accommodation space.
상기 순환배관과 상기 수용공간을 연결하는 제2배관부를 더 포함할 수 있다.It may further include a second pipe connecting the circulation pipe and the receiving space.
상기 순환배관은, 상기 증기발생기의 증기를 상기 열교환기로 공급하는 제1순환배관; 및 상기 열교환기에서 응축된 냉각수를 상기 증기발생기로 공급하는 제2순환배관을 포함하며, 상기 제2배관부는 상기 제1순환배관과 상기 수용공간을 연결할 수 있다.The circulation pipe includes a first circulation pipe that supplies steam from the steam generator to the heat exchanger; and a second circulation pipe that supplies the cooling water condensed in the heat exchanger to the steam generator, and the second pipe portion may connect the first circulation pipe and the receiving space.
상기 제1순환배관에서 분기된 제3배관부; 및 상기 제3배관부의 단부에 연결되어 있으며 상기 격납건물의 외부에 위치하는 주증기안전밸브를 더 포함하며, 상기 제2배관부는 상기 제3배관부에서 분기될 수 있다.a third pipe branched from the first circulation pipe; and a main steam safety valve connected to an end of the third piping unit and located outside the containment building, wherein the second piping unit may branch from the third piping unit.
상기 제1배관부는 제1밸브를 포함하고, 상기 제2배관부는 제2밸브를 포함하며, 상기 제1밸브, 상기 제2밸브 및 상기 댐퍼를 제어하는 제어부를 더 포함하며, 상기 제어부는, 상기 순환배관의 작동에 문제가 있다고 판단되면, 상기 댐퍼를 닫아 상기 수용공간의 압력을 증가시킨 후 상기 제1밸브를 개방하여 상기 수용공간의 냉각수를 상기 증기발생기에 공급할 수 있다.The first piping part includes a first valve, the second piping part includes a second valve, and further includes a control unit that controls the first valve, the second valve, and the damper, and the control unit includes the If it is determined that there is a problem with the operation of the circulation pipe, the damper may be closed to increase the pressure of the accommodation space, and then the first valve may be opened to supply coolant from the accommodation space to the steam generator.
상기 제어부는, 상기 수용공간의 압력을 증가시키기 위해 상기 제2밸브를 개방하며, 상기 수용공간의 압력과 상기 증기발생기의 압력의 차이가 일정수준 이하이면 상기 제1밸브를 개방할 수 있다.The control unit opens the second valve to increase the pressure of the accommodation space, and may open the first valve when the difference between the pressure of the accommodation space and the pressure of the steam generator is below a certain level.
상기 본 발명의 목적은 피동보조급수탱크의 냉각수를 이용한 증기발생기의 충수 방법에 있어서, 열교환기를 수용하고 있는 피동보조급수탱크 내의 수용공간의 압력을 증가시키는 단계; 증기발생기의 압력과 상기 수용공간의 압력의 차이가 일정수준 이하이면 상기 수용공간에 수용되어 있는 냉각수를 중력급수를 통해 상기 증기발생기로 공급할 수 있다.The object of the present invention is to provide a method for filling a steam generator using cooling water from a passive auxiliary water tank, including the steps of increasing the pressure of the receiving space in the passive auxiliary water tank accommodating a heat exchanger; If the difference between the pressure of the steam generator and the pressure of the accommodation space is below a certain level, the cooling water contained in the accommodation space can be supplied to the steam generator through gravity feed.
상기 피동보조급수 탱크는 상기 수용공간을 개폐하는 댐퍼를 포함하며, 상기 압력을 증가시키는 단계에서는 상기 댐퍼를 닫을 수 있다.The passive auxiliary water tank includes a damper that opens and closes the receiving space, and the damper can be closed in the step of increasing the pressure.
상기 압력을 증가시키는 단계에서는, 상기 증기발생기로부터의 증기를 상기 수용공간 내로 공급할 수 있다.In the step of increasing the pressure, steam from the steam generator may be supplied into the receiving space.
상기 증기의 공급은, 상기 증기발생기와 상기 열교환기를 연결하는 순환배관으로부터 분기된 증기공급배관을 이용하여 수행될 수 있다.The supply of the steam may be performed using a steam supply pipe branched from the circulation pipe connecting the steam generator and the heat exchanger.
본 발명에 따르면 피동보조급수탱크의 냉각수를 이용한 증기발생기의 충수 시스템 및 이를 이용한 충수 방법이 제공된다.According to the present invention, a water filling system for a steam generator using cooling water from a passive auxiliary water tank and a water filling method using the same are provided.
도 1 및 도 2는 본 발명의 일실시예에 따른 충수 시스템의 구성도이고,
도 3 및 도 4는 본 발명의 일실시예에 따른 충수시스템을 이용한 충수방법을 나타낸 것이다.1 and 2 are configuration diagrams of a supplementary system according to an embodiment of the present invention;
Figures 3 and 4 show a water filling method using a water filling system according to an embodiment of the present invention.
본 발명에서는 피동보조급수탱크의 냉각수를 증기발생기에 직접주입한다.In the present invention, the cooling water from the passive auxiliary water tank is directly injected into the steam generator.
본 발명은 극한/광역재해로 인해 펌프 등 모든 능동형 기기기의 사용이 제한되고, 급수의 긴급한 공급이 불가할 때 피동보조급수탱크 내의 냉각수를 효과적으로 사용할 수 있는 방법을 제공한다.The present invention provides a method of effectively using the cooling water in the passive auxiliary water tank when the use of all active devices such as pumps is restricted due to extreme/wide-area disasters and urgent supply of water is not possible.
도 1 및 도 2를 참조하여 본 발명의 일실시예에 따른 충수 시스템을 설명한다.An appendix system according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
충수 및 배기 시스템(1)은 격납건물(10), 반응기(20), 증기발생기(30), 피동보조급수탱크(40), 열교환기(50), 순환배관(60), 배관부(71, 72, 73), 주증기안전밸브(74) 및 제어부(80)를 포함한다.The water supply and exhaust system (1) consists of a containment building (10), a reactor (20), a steam generator (30), a passive auxiliary water tank (40), a heat exchanger (50), a circulation pipe (60), and a piping section (71, 72, 73), the main steam safety valve 74, and the control unit 80.
반응기(20)와 증기발생기(30)는 격납건물(10)의 내부에 위치한다.The reactor 20 and steam generator 30 are located inside the containment building (10).
피동보조급수탱크(40)는 격납건물(10)의 외부에 위치하며, 증기발생기(30)보다 높게 위치한다. 피동보조급수탱크(40)의 내부에는 수용공간이 형성되어 있다. 수용공간에는 열교환기(50)와, 열교환기(50)를 둘러싸는 냉각수가 위치하고 있다. 피동보조급수탱크(40)는 수용공간 상부에 위치하는 댐퍼(41)를 포함하며, 댐퍼(41)는 수용공간의 개폐를 결정한다.The passive auxiliary water tank (40) is located outside the containment building (10) and is located higher than the steam generator (30). An accommodation space is formed inside the passive auxiliary water tank 40. In the accommodation space, a heat exchanger 50 and cooling water surrounding the heat exchanger 50 are located. The passive auxiliary water tank 40 includes a damper 41 located at the top of the accommodation space, and the damper 41 determines the opening and closing of the accommodation space.
열교환기(50)는 폐루프형태인 순환배관(60)을 통해 증기발생기(30)에 연결되어 있다. 순환배관(60)은 증기발생기(30)의 증기를 열교환기(50)에 공급하는 제1순환배관(60)과 증기발생기(30)에서 냉각되어 응축된 냉각수를 증기발생기(30)로 다시 공급하는 제2순환배관(62)을 포함한다.The heat exchanger 50 is connected to the steam generator 30 through a closed loop circulation pipe 60. The circulation pipe 60 supplies the first circulation pipe 60, which supplies steam from the steam generator 30 to the heat exchanger 50, and the cooling water cooled and condensed in the steam generator 30 back to the steam generator 30. It includes a second circulation pipe (62).
제1배관부(71)는 수용공간과 증기발생기(30)를 연결한다. 제1배관부(71)는 제1밸브(710)를 포함한다.The first piping part 71 connects the accommodation space and the steam generator 30. The first piping unit 71 includes a first valve 710.
제2배관부(72, 증기공급배관)는 제3배관부(73)과 수용공간을 연결하며, 제2밸브(720)를 포함한다.The second piping part 72 (steam supply pipe) connects the third piping part 73 and the receiving space and includes a second valve 720.
제3배관부(73)는 제1순환배관(61)에서 분기되어 있으며, 말단은 주증기안전밸브(74)에 연결되어 있다. 주증기안전밸브(74)는 격납건물(10)의 외부에 위치한다.The third pipe portion 73 is branched from the first circulation pipe 61, and its end is connected to the main steam safety valve 74. The main steam safety valve 74 is located outside the containment building 10.
위 구성 중 피동보조급수탱크(40), 열교환기(50), 순환배관(60), 제3배관부(73) 및 주증기안전밸브(74)는 피동보조급수계통을 형성한다.Among the above configurations, the passive auxiliary water supply tank (40), heat exchanger (50), circulation pipe (60), third pipe part (73), and main steam safety valve (74) form a passive auxiliary water supply system.
제어부(80)는 각종 센싱데이터를 기초로 댐퍼(41), 제1밸브(710) 및 제2밸브(720)를 제어한다.The control unit 80 controls the damper 41, the first valve 710, and the second valve 720 based on various sensing data.
센싱데이터는 증기발생기(30)의 압력 및 피동보조급수탱크(30)의 압력을 포함하며, 온도 데이터 및 유량 데이터를 더 포함할 수 있다. 도시하지는 않았지만, 센싱데이터의 생성을 위한 센서를 더 포함할 수 있다.The sensing data includes the pressure of the steam generator 30 and the pressure of the passive auxiliary water tank 30, and may further include temperature data and flow rate data. Although not shown, it may further include a sensor for generating sensing data.
이하, 도 3 및 도 4를 참조하여 냉각수 충수 방법에 대해 설명한다. Hereinafter, a method of adding coolant will be described with reference to FIGS. 3 and 4.
본 발명은 피동보조급수탱크(40) 내의 압력을 빌드업시키고, 그 압력을 이용하여 증기발생기(30)로 피동보조급수탱크(40) 내부의 냉각수를 직접 주입한다.The present invention builds up the pressure within the driven auxiliary water tank (40) and directly injects the cooling water inside the driven auxiliary water tank (40) into the steam generator (30) using the pressure.
본 발명에 따른 충수는 정전사고 피동보조급수계통의 폐루프 냉각 실패시 수행될 수 있다.Topping according to the present invention can be performed when closed-loop cooling of the passive auxiliary water supply system fails due to a power outage.
구체적으로는 정전사고 발생 이후 주증기안전밸브(74)의 개방고착사고가 발생하여 피동보조급수계통의 폐회로를 구성하지 못하거나, 열교환기(50)의 플러깅, 또는 열성층 형성으로 자연대류 발생하지 않는 등의 경우이다. Specifically, after a power outage accident, an open sticking accident of the main steam safety valve 74 occurred, preventing the closed circuit of the passive auxiliary water supply system from being formed, plugging of the heat exchanger 50, or natural convection not occurring due to the formation of a thermal layer. This is the case where it is not done.
먼저, 도 3과 같이 댐퍼(41)를 닫아 수용공간 내부의 증기압 축적을 준비하고, 이후 제2밸브(720)를 개방하여 증기발생기(30)로부터 배출되는 증기의 일정부분을 수용공간 내부로 도입한다. 증기는 제1순환배관(61), 제3배관부(73) 및 제2배관부(72)를 거쳐 공급된다. 증기의 공급에 의해 수용공간의 압력이 증가하고 수용공간과 증기발생기(30) 간의 압력 차이가 감소한다.First, as shown in FIG. 3, the damper 41 is closed to prepare for steam pressure accumulation inside the accommodation space, and then the second valve 720 is opened to introduce a certain portion of the steam discharged from the steam generator 30 into the accommodation space. do. Steam is supplied through the first circulation pipe (61), the third pipe section (73), and the second pipe section (72). By supplying steam, the pressure of the accommodation space increases and the pressure difference between the accommodation space and the steam generator 30 decreases.
이후, 수용공간과 증기발생기(30) 간의 압력 차이가 일정수준 이하가 되면 도 4와 같이 제1밸브(710)를 개방한다. 수용공간과 증기발생기(30) 간의 압력 차이는 수두차에 의한 중력급수가 가능한 압력 차이이며, 수용공간과 증기발생기(30) 사이의 압력이 동일해지는 경우를 포함한다.Thereafter, when the pressure difference between the receiving space and the steam generator 30 falls below a certain level, the first valve 710 is opened as shown in FIG. 4. The pressure difference between the accommodation space and the steam generator 30 is a pressure difference that allows gravity water supply due to the water head difference, and includes cases where the pressure between the accommodation space and the steam generator 30 becomes the same.
제1밸브(710)의 개방에 의해 수용공간 내의 냉각수가 중력급수에 의해 증기발생기(30)에 공급된다.By opening the first valve 710, the cooling water in the receiving space is supplied to the steam generator 30 by gravity feed.
본 발명에 따르면 원자력 발전소에서 설계기준초과사고 대처능력이 개선된다.According to the present invention, the ability to respond to accidents exceeding design standards in nuclear power plants is improved.
또한, 원자력 발전소 사고관리계획이 개선되며 중대사고 대처능력도 개선된다.In addition, nuclear power plant accident management plans will be improved and the ability to respond to serious accidents will also be improved.
외부자원(이동형펌프, 발전차 및 수원 등)이 도착하기 전에 노심의 잔열제거 기능이 수행되어 중대사고 발생이 예방되며, 중대사고 발생시 사고완화가 가능하다.The function of removing residual heat from the core is performed before the arrival of external resources (mobile pumps, power generation vehicles, water sources, etc.), preventing serious accidents, and in the event of a serious accident, accident mitigation is possible.
전술한 실시예들은 본 발명을 설명하기 위한 예시로서, 본 발명이 이에 한정되는 것은 아니다. 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 이로부터 다양하게 변형하여 본 발명을 실시하는 것이 가능할 것이므로, 본 발명의 기술적 보호범위는 첨부된 특허청구범위에 의해 정해져야 할 것이다.The above-described embodiments are examples for explaining the present invention, and the present invention is not limited thereto. Anyone skilled in the art to which the present invention pertains will be able to implement the present invention through various modifications, so the scope of technical protection of the present invention should be determined by the appended claims.
Claims (10)
격납건물;
상기 격납건물 내에 위치하는 반응기 및 증기발생기;
상기 격납건물 외부에 위치하며 냉각수를 수용하고 있는 수용공간이 형성되어 있는 상기 피동보조급수탱크;
상기 피동보조급수탱크 내에 위치하는 열교환기;
상기 증기발생기와 상기 열교환기 사이를 연결하며 폐루프를 형성하는 순환배관; 및
상기 수용공간과 상기 증기발생기를 연결하는 제1배관부를 포함하며,
상기 피동보조급수탱크는 상기 수용공간의 개폐여부를 결정하는 댐퍼를 포함하며,
상기 순환배관과 상기 수용공간을 연결하는 제2배관부를 더 포함하는 시스템.In the water supply system for a steam generator using cooling water from a passive auxiliary water tank,
containment building;
A reactor and steam generator located within the containment building;
The passive auxiliary water tank located outside the containment building and having a receiving space containing cooling water;
A heat exchanger located within the passive auxiliary water tank;
A circulation pipe connecting the steam generator and the heat exchanger and forming a closed loop; and
It includes a first piping part connecting the accommodation space and the steam generator,
The passive auxiliary water tank includes a damper that determines whether to open or close the receiving space,
A system further comprising a second piping unit connecting the circulation piping and the receiving space.
상기 순환배관은,
상기 증기발생기의 증기를 상기 열교환기로 공급하는 제1순환배관; 및
상기 열교환기에서 응축된 냉각수를 상기 증기발생기로 공급하는 제2순환배관을 포함하며,
상기 제2배관부는 상기 제1순환배관과 상기 수용공간을 연결하는 시스템.According to paragraph 1,
The circulation pipe is,
a first circulation pipe supplying steam from the steam generator to the heat exchanger; and
It includes a second circulation pipe that supplies cooling water condensed in the heat exchanger to the steam generator,
The second piping part is a system that connects the first circulation piping and the receiving space.
상기 제1순환배관에서 분기된 제3배관부; 및
상기 제3배관부의 단부에 연결되어 있으며 상기 격납건물의 외부에 위치하는 주증기안전밸브를 더 포함하며,
상기 제2배관부는 상기 제3배관부에서 분기된 시스템.According to paragraph 3,
a third pipe branched from the first circulation pipe; and
It is connected to an end of the third piping section and further includes a main steam safety valve located outside the containment building,
The second piping part is a system branched from the third piping part.
상기 제1배관부는 제1밸브를 포함하고,
상기 제2배관부는 제2밸브를 포함하며,
상기 제1밸브, 상기 제2밸브 및 상기 댐퍼를 제어하는 제어부를 더 포함하며,
상기 제어부는,
상기 순환배관의 작동에 문제가 있다고 판단되면,
상기 댐퍼를 닫아 상기 수용공간의 압력을 증가시킨 후 상기 제1밸브를 개방하여 상기 수용공간의 냉각수를 상기 증기발생기에 공급하는 시스템.According to paragraph 4,
The first piping part includes a first valve,
The second piping part includes a second valve,
It further includes a control unit that controls the first valve, the second valve, and the damper,
The control unit,
If it is determined that there is a problem with the operation of the circulation pipe,
A system that closes the damper to increase the pressure of the accommodation space and then opens the first valve to supply cooling water from the accommodation space to the steam generator.
상기 제어부는,
상기 수용공간의 압력을 증가시키기 위해 상기 제2밸브를 개방하며,
상기 수용공간의 압력과 상기 증기발생기의 압력의 차이가 일정수준 이하이면 상기 제1밸브를 개방하는 시스템.According to clause 5,
The control unit,
Opening the second valve to increase the pressure of the receiving space,
A system that opens the first valve when the difference between the pressure of the accommodation space and the pressure of the steam generator is below a certain level.
열교환기를 수용하고 있는 피동보조급수탱크 내의 수용공간의 압력을 증가시키는 단계;
증기발생기의 압력과 상기 수용공간의 압력의 차이가 일정수준 이하이면 상기 수용공간에 수용되어 있는 냉각수를 중력급수를 통해 상기 증기발생기로 공급하며,
상기 피동보조급수 탱크는 상기 수용공간을 개폐하는 댐퍼를 포함하며,
상기 압력을 증가시키는 단계에서는 상기 댐퍼를 닫으며,
상기 압력을 증가시키는 단계에서는,
상기 증기발생기로부터의 증기를 상기 수용공간 내로 공급하며,
상기 증기의 공급은,
상기 증기발생기와 상기 열교환기를 연결하는 순환배관으로부터 분기된 증기공급배관을 이용하여 수행되는 방법.In the method of filling a steam generator using cooling water from a passive auxiliary water tank,
Increasing the pressure of the accommodation space within the passive auxiliary water tank accommodating the heat exchanger;
If the difference between the pressure of the steam generator and the pressure of the accommodation space is below a certain level, the cooling water contained in the accommodation space is supplied to the steam generator through gravity feed,
The passive auxiliary water tank includes a damper that opens and closes the receiving space,
In the step of increasing the pressure, the damper is closed,
In the step of increasing the pressure,
Supplying steam from the steam generator into the receiving space,
The supply of steam is,
A method performed using a steam supply pipe branched from a circulation pipe connecting the steam generator and the heat exchanger.
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