KR20220096377A - Nuclear Power Plant Having Improved Safety by Double Containment - Google Patents

Nuclear Power Plant Having Improved Safety by Double Containment Download PDF

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KR20220096377A
KR20220096377A KR1020200188763A KR20200188763A KR20220096377A KR 20220096377 A KR20220096377 A KR 20220096377A KR 1020200188763 A KR1020200188763 A KR 1020200188763A KR 20200188763 A KR20200188763 A KR 20200188763A KR 20220096377 A KR20220096377 A KR 20220096377A
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space
containment
power plant
nuclear power
auxiliary
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KR102561992B1 (en
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한승주
김대준
김광홍
양원석
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한국수력원자력 주식회사
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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C13/00—Pressure vessels; Containment vessels; Containment in general
    • G21C13/10—Means for preventing contamination in the event of leakage, e.g. double wall
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C13/00—Pressure vessels; Containment vessels; Containment in general
    • G21C13/02—Details
    • G21C13/028—Seals, e.g. for pressure vessels or containment vessels
    • G21C13/0285—Seals, e.g. for pressure vessels or containment vessels for container apertures
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C13/00—Pressure vessels; Containment vessels; Containment in general
    • G21C13/08—Vessels characterised by the material; Selection of materials for pressure vessels
    • G21C13/093—Concrete vessels
    • 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

The present invention relates to a nuclear power plant for increasing safety by double containment. The nuclear power plant comprises: a nuclear reactor building that forms an accommodation space for accommodating a nuclear reactor and has a through-hole formed therein; an auxiliary building surrounding the nuclear reactor building and forming an auxiliary space; and a containment unit located in the auxiliary space and communicating with the through-hole and forming a containment space separated from the auxiliary space.

Description

이중 격납에 의해 안전성이 향상된 원자력발전소{Nuclear Power Plant Having Improved Safety by Double Containment}Nuclear Power Plant Having Improved Safety by Double Containment

본 발명은 이중 격납에 의해 안전성이 향상된 원자력발전소에 관한 것이다.The present invention relates to a nuclear power plant with improved safety by double containment.

EUR요건에서 원자로계통은 방사능 방출요건 만족을 위해 1차 원자로 건물 및 2차 원자로 건물을 포함해야 한다. 이에, 국내외 다수 유럽 수출형 원전의 경우 1차 원자로 건물을 2차 원자로 건물이 둘러싸는 완전이중격납건물 구조를 채택하고 있다. In the EUR requirements, the reactor system must include a primary reactor building and a secondary reactor building in order to meet the radioactive emission requirements. Accordingly, in the case of many domestic and foreign export-type nuclear power plants in Europe, the structure of a fully double containment building is adopted in which the primary reactor building is surrounded by the secondary reactor building.

완전이중격납구조는 1차 격벽을 통한 누설이 1차 원자로 건물과 2차 원자로 건물 사이의 환형 공간에 모이고 HVAC(공기조화)이 추가적으로 여과한다. 현재 가동원전의 종합누설율 시험(ILRT)과 국부누설율 시험(LLRT) 경험에 따르면 1차원자로 건물로부터의 대부분의 누설은 격리밸브 누설시험에서 발생하며, 격벽으로의 누설은 매우 낮은 수치이다. In the full double containment structure, leakage through the primary bulkhead is collected in the annular space between the primary and secondary reactor buildings and additionally filtered by HVAC (air conditioning). According to the experience of the integrated leakage rate test (ILRT) and the local leak rate test (LLRT) of the currently operating nuclear power plant, most leakage from the one-dimensional reactor building occurs through the isolation valve leakage test, and the leakage to the bulkhead is very low.

완전이중격납건물의 격리밸브가 환형 공간에 설치될 경우 배치 및 유지보수에 어려움이 있어, 2차 격납 건물 외부에 설치되는 경우도 발생하며, 이 경우 이중여과 효과를 가질 수 없다. 또한, 완전이중 원자로 격납 건물의 경우 건설물량 및 건설 공사 기간이 증가하여 경제성 및 효율성 측면에서 불리하다. When the isolation valve of a fully double containment building is installed in an annular space, it is difficult to arrange and maintain it, so it may be installed outside the secondary containment building. In addition, in the case of a fully-duplex nuclear reactor containment building, the construction quantity and construction period increase, which is disadvantageous in terms of economic feasibility and efficiency.

한국 등록 특허 제10-1230713호 (2013년 02월 07일 공고)Korea Registered Patent No. 10-1230713 (published on February 07, 2013)

본 발명의 목적은 이중 격납에 의해 안전성이 향상된 원자력발전소를 제공하는 것이다.An object of the present invention is to provide a nuclear power plant with improved safety by double containment.

본 발명은 이중 격납에 의해 안전성이 향상된 원자력발전소에 있어서, 원자로를 수용하는 수용공간을 형성하며 관통공이 형성되어 있는 원자로 건물, 상기 원자로 건물을 둘러싸고 있으며 보조공간을 형성하는 보조건물 및 상기 보조공간 내에 위치하고 상기 관통공과 연통하며, 상기 보조공간과 분리된 격납공간을 형성하는 격납유닛을 포함하는 원자력발전소에 관한 것이다.The present invention relates to a nuclear power plant with improved safety by double containment, a nuclear reactor building that forms an accommodation space for accommodating a nuclear reactor and has a through hole formed therein, an auxiliary building surrounding the reactor building and forming an auxiliary space, and within the auxiliary space It relates to a nuclear power plant including a containment unit located in communication with the through hole and forming a containment space separated from the auxiliary space.

상기 보조건물은 비상배기 공기조화기를 더 포함하고, 상기 비상배기 공기조화기는 상기 격납공간과 연결된 AHU 및 ACU를 포함하며, 상기 격납공간은 부압상태를 유지한다.The auxiliary building further includes an emergency exhaust air conditioner, the emergency exhaust air conditioner includes an AHU and an ACU connected to the containment space, and the containment space maintains a negative pressure state.

상기 격납유닛은 제1격납유닛과 제2격납유닛을 포함한다.The storage unit includes a first storage unit and a second storage unit.

본 발명은 배관부를 더 포함하며, 상기 배관부는 상기 제1격납유닛 내에 위치하는 격리밸브, 상기 격리밸브와 연결되어 있으며 상기 관통공을 통해 상기 수용공간으로 연장된 제1배관 및 상기 격리밸브와 연결되어 있으며 상기 보조공간으로 연장된 제2배관을 포함한다.The present invention further includes a pipe part, wherein the pipe part is connected to an isolation valve located in the first containment unit, the isolation valve, and a first pipe extending into the accommodation space through the through hole and connected to the isolation valve and a second pipe extending to the auxiliary space.

본 발명은 전선부를 더 포함하며, 상기 전선부는 상기 제2격납유닛 내에 위치하고 상기 관통공을 통해 상기 수용공간으로 연장된 제1전선 및 상기 보조공간으로 연장된 제2전선을 포함한다.The present invention further includes an electric wire part, wherein the electric wire part includes a first electric wire located in the second containment unit and extending to the receiving space through the through hole and a second electric wire extending to the auxiliary space.

상기 제2격납유닛은 상기 격납공간에 위치하는 피동형촉매결합기를 더 포함한다.The second containment unit further includes a passive catalyst coupler positioned in the containment space.

본 발명에 따르면, 이중 격납에 의해 안전성이 향상된 원자력발전소가 제공된다.According to the present invention, there is provided a nuclear power plant with improved safety by double containment.

도 1은 본 발명의 일실시예에 따른 원자력발전소를 나타낸 그림이며,
도 2는 본 발명의 일실시예에 따른 원자력발전소를 나타낸 또 다른 그림이다.1 is a diagram showing a nuclear power plant according to an embodiment of the present invention,
2 is another diagram showing a nuclear power plant according to an embodiment of the present invention.

이하 도면을 참조하여 본 발명을 더욱 상세히 설명한다. 첨부된 도면은 본 발명의 기술적 사상을 더욱 구체적으로 설명하기 위하여 도시한 일 예에 불과하므로 본 발명의 사상이 첨부된 도면에 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to the drawings. Since the accompanying drawings are merely examples shown in order to explain the technical idea of the present invention in more detail, the spirit of the present invention is not limited to the accompanying drawings.

도 1은 본 발명의 일실시예에 따른 원자력발전소를 나타낸 그림이며, 도 2는 본 발명의 일실시예에 따른 원자력발전소를 나타낸 또 다른 그림으로, 도 1 및 도 2를 참조하여 발명의 이중 격납에 의해 안전성이 향상된 원자력발전소를 설명한다.1 is a diagram showing a nuclear power plant according to an embodiment of the present invention, and FIG. 2 is another diagram showing a nuclear power plant according to an embodiment of the present invention. Nuclear power plants with improved safety are explained.

본 발명의 원자력발전소(1)는 원자로 건물(10), 보조건물(20), 격납유닛(30), 배관부(40) 및 전선부(50)를 포함한다.The nuclear power plant 1 of the present invention includes a nuclear reactor building 10 , an auxiliary building 20 , a containment unit 30 , a piping unit 40 , and an electric wire unit 50 .

원자로 건물(10)은 원자로가 수용되는 수용공간을 형성하며, 측면에는 관통공(110)이 형성되어 있다.The nuclear reactor building 10 forms an accommodation space in which the nuclear reactor is accommodated, and a through hole 110 is formed in the side surface.

관통공(110)은 4개로 마련되어 있으나, 이에 한정되지 않는다.Four through-holes 110 are provided, but the present invention is not limited thereto.

수용공간에는 원자로가 위치하고, 관통공(110)은 배관이나 전선 등이 통과하기 위해 마련된다.A nuclear reactor is located in the accommodation space, and the through hole 110 is provided for a pipe or an electric wire to pass therethrough.

보조건물(20)은 보조공간을 형성하고 비상배기 공기조화기(210)를 포함한다.The auxiliary building 20 forms an auxiliary space and includes an emergency exhaust air conditioner 210 .

보조건물(20) 내에는 발전을 위한 터빈 등의 시설이 위치한다.In the auxiliary building 20, facilities such as a turbine for power generation are located.

비상배기 공기조화기(210)는 AHU(Air Handling Unit, 211) 및 ACU(Air Conditioning Unit, 212)를 포함한다.The emergency exhaust air conditioner 210 includes an Air Handling Unit (AHU) 211 and an Air Conditioning Unit (ACU) 212 .

도시하지는 않았지만, 비상배기 공기조화기(210)는 격납공간에서 발생하는 유해가스를 처리하기 위한 처리설비를 더 포함할 수 있다.Although not shown, the emergency exhaust air conditioner 210 may further include a treatment facility for treating harmful gas generated in the containment space.

보조건물(20)은 원자로 건물(10)보다 낮게 마련되어 있으며, 원자로 건물(10)을 둘러싸고 있다.The auxiliary building 20 is provided lower than the reactor building 10 and surrounds the reactor building 10 .

격납유닛(30)은 보조공간 내부에 위치하고, 원자로 건물(10)의 관통공(110)과 연결되어 있다. The containment unit 30 is located inside the auxiliary space and is connected to the through hole 110 of the nuclear reactor building 10 .

격납유닛(30)의 내부에는 격납공간이 마련되어 있다.A storage space is provided inside the storage unit 30 .

격납공간은 보조공간과는 분리되어 있다.The containment space is separated from the auxiliary space.

각 격납유닛(30)은 AHU(Air Handling Unit, 211) 및 ACU(Air Conditioning Unit, 212)과 연결되어 있다.Each of the containment units 30 is connected to an Air Handling Unit (AHU) 211 and an Air Conditioning Unit (ACU) 212 .

격납유닛(30)은 유해가스가 보조공간으로 유출되지 않도록 부압상태를 유지하고 있으며, 발생한 유해가스는 비상배기 공기조화기(210)를 통해 여과 배기된다.The containment unit 30 maintains a negative pressure state so that the harmful gas does not flow into the auxiliary space, and the generated harmful gas is filtered and exhausted through the emergency exhaust air conditioner 210 .

격납유닛(30)은 제1격납유닛(310) 및 제2격납유닛(320)을 포함한다.The storage unit 30 includes a first storage unit 310 and a second storage unit 320 .

도 2에서 도시한 바와 같이, 제1격납유닛(310)은 MPA(Mechanical Penetration Area)에 2개가 마련되어 있고, 제2격납유닛(320)은 EPA(Electrical Penetration Area)에 2개가 마련될 수 있다. 그러나 이에 한정되는 것은 아니다.As shown in FIG. 2 , two of the first storage units 310 are provided in a Mechanical Penetration Area (MPA), and two of the second storage units 320 are provided in an Electrical Penetration Area (EPA). However, the present invention is not limited thereto.

제2격납유닛(320)의 격납공간에는 피동형촉매결합기(PAR, Passive Autocatalytic Recombiner, 321)가 마련되어 있다.A passive autocatalytic recombine (PAR) 321 is provided in the storage space of the second containment unit 320 .

사고 발생 시 전원상실 등의 이유로 비상배기 공기조화기(210) 작동이 불가할 경우 전원을 사용하지 않는 PAR(321)를 통해 폭발 위험성이 높은 수소를 저감시킬 수 있다. When the emergency exhaust air conditioner 210 cannot be operated due to power loss or the like when an accident occurs, hydrogen, which has a high risk of explosion, can be reduced through the PAR 321 that does not use power.

다른 실시예에서는 PAR(321)가 제1격납유닛(310)의 격납공간에도 마련될 수 있다.In another embodiment, the PAR 321 may also be provided in the storage space of the first storage unit 310 .

배관부(40)는 격리밸브(410), 제1배관(420) 및 제2배관(430)을 포함한다.The pipe part 40 includes an isolation valve 410 , a first pipe 420 , and a second pipe 430 .

격리밸브(410)는 제1격납유닛(310)의 격납공간에 위치한다.The isolation valve 410 is located in the containment space of the first containment unit 310 .

제1배관(420)은 격리밸브(410)와 연결되어 있으며, 관통공(110)을 통해 수용공간으로 연장되어 있다. The first pipe 420 is connected to the isolation valve 410 and extends into the receiving space through the through hole 110 .

제2배관(430) 역시 격리밸브(410)와 연결되어 있으며, 보조공간으로 연장되어 있다.The second pipe 430 is also connected to the isolation valve 410 and extends into the auxiliary space.

전선부(50)는 제1전선(510) 및 제2전선(520)을 포함한다.The wire unit 50 includes a first wire 510 and a second wire 520 .

제1전선(510)은 관통공(110)을 통해 수용공간으로 연장되어 있으며, 제2전선(520)은 보조공간으로 연장되어 있다.The first wire 510 extends into the receiving space through the through hole 110 , and the second wire 520 extends into the auxiliary space.

본 발명은 단일 격납구조를 가지는 원자로 건물(10)의 관통공(110) 구역만 격실화하여 2차 구조물화하고, 관통공(110)을 통한 방사성물질 누설을 추가적으로 수집하여 여과한다.In the present invention, only the through-hole 110 section of the nuclear reactor building 10 having a single containment structure is compartmentalized to form a secondary structure, and radioactive material leakage through the through-hole 110 is additionally collected and filtered.

격납유닛(30)은 스틸이나 콘크리트 구조물로 마련될 수 있다. 누설방지를 위해 보조공간 등과의 차단을 위해 내부 및/또는 외부에 수지 라이닝이 마련될 수도 있다.The containment unit 30 may be provided with a steel or concrete structure. A resin lining may be provided inside and/or outside to block the auxiliary space to prevent leakage.

본 발명에 따르면 이중격납을 요구하는 EUR 요건을 충족하면서도, 비교적 설치가 간단한 격납유닛(30)만을 설치하기 때문에 건설 공사 기간을 단축할 수 있다.According to the present invention, the construction period can be shortened because only the containment unit 30, which is relatively easy to install, is installed while satisfying the EUR requirement for double containment.

또한, 원자로 건물의 관통부 구역만을 격납화하여 건설물량 구매비, 시공비를 절감할 수 있다. In addition, it is possible to reduce the purchase cost of the construction quantity and the construction cost by containing only the penetration section of the nuclear reactor building.

격리밸브(410)의 점검이나 고장 시에는 격납유닛(30)만을 분해하면 되기 때문에 격리밸브(410)의 점검이나 고장에 쉽게 대응가능하다. Since it is only necessary to disassemble the containment unit 30 when the isolation valve 410 is inspected or broken, it is possible to easily respond to the inspection or failure of the isolation valve 410 .

다른 실시예에서는 격리밸브(410)의 점검이나 고장에 용이하게 대응하기 위해 격납유닛(30)을 분리형이나 개폐형으로 마련할 수 있다.In another embodiment, in order to easily respond to the inspection or failure of the isolation valve 410, the containment unit 30 may be provided as a separate type or an open/close type.

이상으로 본 발명 내용의 특정한 부분을 상세히 기술하였는바, 당업계의 통상의 지식을 가진 자에게 있어서, 이러한 구체적 기술은 단지 바람직한 실시 양태일 뿐이며, 이에 의해 본 발명의 범위가 제한되는 것이 아닌 점은 명백할 것이다. 따라서, 본 발명의 실질적인 범위는 첨부된 청구항들과 그것들의 등가물에 의하여 정의된다고 할 것이다. As described above in detail a specific part of the content of the present invention, for those of ordinary skill in the art, it is clear that this specific description is only a preferred embodiment, and the scope of the present invention is not limited thereby. something to do. Accordingly, it is intended that the substantial scope of the present invention be defined by the appended claims and their equivalents.

Claims (6)

이중 격납에 의해 안전성이 향상된 원자력발전소에 있어서,
원자로를 수용하는 수용공간을 형성하며 관통공이 형성되어 있는 원자로 건물;
상기 원자로 건물을 둘러싸고 있으며 보조공간을 형성하는 보조건물; 및
상기 보조공간 내에 위치하고 상기 관통공과 연통하며, 상기 보조공간과 분리된 격납공간을 형성하는 격납유닛;을 포함하는 원자력발전소.In a nuclear power plant with improved safety by double containment,
a reactor building that forms an accommodating space for accommodating the nuclear reactor and has a through hole formed therein;
an auxiliary building surrounding the reactor building and forming an auxiliary space; and
and a containment unit located in the auxiliary space, communicating with the through hole, and forming a containment space separated from the auxiliary space. 제1항에 있어서,
상기 보조건물은,
비상배기 공기조화기를 더 포함하고,
상기 비상배기 공기조화기는,
상기 격납공간과 연결된 AHU 및 ACU를 포함하며,
상기 격납공간은 부압상태를 유지하는 원자력발전소.According to claim 1,
The auxiliary building is
Further comprising an emergency exhaust air conditioner,
The emergency exhaust air conditioner,
It includes an AHU and an ACU connected to the containment space,
The containment space is a nuclear power plant to maintain a negative pressure state. 제1항에 있어서,
상기 격납유닛은,
제1격납유닛과 제2격납유닛을 포함하는 원자력발전소.According to claim 1,
The storage unit is
A nuclear power plant comprising a first containment unit and a second containment unit. 제3항에 있어서,
배관부를 더 포함하며,
상기 배관부는,
상기 제1격납유닛 내에 위치하는 격리밸브, 상기 격리밸브와 연결되어 있으며 상기 관통공을 통해 상기 수용공간으로 연장된 제1배관; 및
상기 격리밸브와 연결되어 있으며 상기 보조공간으로 연장된 제2배관;을 포함하는 원자력발전소.4. The method of claim 3,
It further includes a pipe portion,
The pipe part,
an isolation valve located in the first containment unit, a first pipe connected to the isolation valve and extending into the accommodation space through the through hole; and
A nuclear power plant comprising a; a second pipe connected to the isolation valve and extending to the auxiliary space. 제3항에 있어서,
전선부를 더 포함하며,
상기 전선부는,
상기 제2격납유닛 내에 위치하고 상기 관통공을 통해 상기 수용공간으로 연장된 제1전선; 및
상기 보조공간으로 연장된 제2전선;을 포함하는 원자력발전소.4. The method of claim 3,
It further includes a wire part,
The wire part,
a first wire located in the second containment unit and extending into the accommodation space through the through hole; and
A nuclear power plant comprising a; a second wire extending into the auxiliary space. 제5항에 있어서,
상기 제2격납유닛은,
상기 격납공간에 위치하는 피동형촉매결합기를 더 포함하는 원자력발전소.6. The method of claim 5,
The second storage unit,
The nuclear power plant further comprising a passive catalytic coupler positioned in the containment space.
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JPH10282284A (en) * 1997-04-10 1998-10-23 Toshiba Corp Nuclear power generating facility
KR20010076565A (en) * 2000-01-26 2001-08-16 이종훈 Passive Secondary Condensing System
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