JPH06258491A - Water supply equipment for condensate storage tank - Google Patents
Water supply equipment for condensate storage tankInfo
- Publication number
- JPH06258491A JPH06258491A JP5041324A JP4132493A JPH06258491A JP H06258491 A JPH06258491 A JP H06258491A JP 5041324 A JP5041324 A JP 5041324A JP 4132493 A JP4132493 A JP 4132493A JP H06258491 A JPH06258491 A JP H06258491A
- Authority
- JP
- Japan
- Prior art keywords
- water
- storage tank
- condensate storage
- piping
- tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
Landscapes
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は原子力発電所の原子力圧
力容器および原子炉格納容器へ冷却水を注水する際に、
その水源である復水貯蔵槽に水を補給するための復水貯
蔵槽の水補給設備に関する。BACKGROUND OF THE INVENTION The present invention relates to the injection of cooling water into a nuclear pressure vessel and a reactor containment vessel of a nuclear power plant.
The present invention relates to a water supply facility of a condensate storage tank for supplying water to the condensate storage tank that is the water source.
【０００２】[0002]
【従来の技術】原子力発電所では、その事故時などに原
子力圧力容器および原子炉格納容器へ冷却水を注水する
ため、緊急炉心冷却系，格納容器スプレイ系などの設備
が設置されている。2. Description of the Related Art In a nuclear power plant, facilities such as an emergency core cooling system and a containment vessel spray system are installed to inject cooling water into a nuclear pressure vessel and a reactor containment vessel in the event of an accident.
【０００３】この冷却水を注水する設備の水源としては
復水貯蔵槽があり、この復水貯蔵槽は原子力発電所の安
全解析上必要となる以上の水量を保有している。なお、
復水を貯蔵する設備は、安全設計の要求により高い耐震
性が求められるため、その基礎部は岩盤にて支持する必
要があることから、一般的に地盤面から岩盤までが浅い
原子力発電所では人工岩盤上に独立設置するタンク方
式、地盤面から岩盤までが深い原子力発電所では耐震性
の高い建屋内に設置する槽方式がそれぞれ採用されてい
る。A condensate storage tank is used as a water source of the facility for injecting the cooling water, and the condensate storage tank has an amount of water more than necessary for safety analysis of the nuclear power plant. In addition,
Equipment for storing condensate requires high seismic resistance due to safety design requirements, and therefore the foundation of the equipment must be supported by bedrock, so in a nuclear power plant where the ground surface to bedrock is generally shallow. A tank system installed independently on artificial rock and a tank system installed inside a highly earthquake-resistant building are adopted for nuclear power plants with deep ground to rock.
【０００４】復水貯蔵槽に貯蔵される復水は、通常水処
理装置などを経て復水貯蔵槽に補給されるものの、その
補給量は比較的少量である。The condensate stored in the condensate storage tank is usually replenished to the condensate storage tank through a water treatment device or the like, but the replenishment amount is relatively small.
【０００５】従来の復水貯蔵槽の設計では、万一大量の
復水が必要となり、通常の復水補給方法では容量が不足
する場合を考慮し、復水貯蔵槽に予備の水補給配管を設
置していた。この予備の水補給配管は建屋外壁面に送水
口を配設し、この送水口から復水貯蔵槽までを配管で接
続する。そして、復水が必要になった場合には、可搬式
ポンプ車などにより、その取水口から海水などを汲み上
げ、上記送水口から送水することにより、復水貯蔵槽へ
水を補給していた。In the conventional design of a condensate storage tank, a large amount of condensate is needed, and in consideration of the case where the capacity is insufficient by the ordinary condensate replenishment method, a spare water supply pipe is installed in the condensate storage tank. It was installed. This spare water supply pipe has a water supply port provided on the exterior wall surface of the building, and a pipe is connected from this water supply port to the condensate storage tank. When condensate is needed, a portable pump truck or the like pumps seawater or the like from the intake port and supplies the water from the water supply port to replenish the condensate storage tank.
【０００６】なお、水補給配管の途中には、通常時
「閉」の弁を設置しており、放射性物質を含有する復水
貯蔵槽の雰囲気が外気に開放しないようにしている。A valve which is normally "closed" is installed in the middle of the water supply pipe to prevent the atmosphere of the condensate storage tank containing radioactive substances from opening to the outside air.
【０００７】[0007]
【発明が解決しようとする課題】ところで、近年その対
応が検討されている原子力発電所のシビアアクシデント
においては、Ｓ2 クラスの地震、ステーションブラック
アウトなど原子力発電所の全電源喪失、既存の原子炉注
水設備の機能喪失、動的機器の単一故障、従来考慮して
いた原子炉冷却水注水量以上の量の注水を要する事故事
象などを仮定している。By the way, in severe accidents of nuclear power plants, which are being investigated in recent years, S 2 class earthquakes, station blackouts, loss of all power sources of nuclear power plants, existing nuclear reactors, etc. It is assumed that there is a loss of function of water injection equipment, a single failure of dynamic equipment, and an accident event that requires injection of water in excess of the reactor cooling water injection amount that had been considered in the past.
【０００８】この場合、原子力圧力容器および原子炉格
納容器に対し、従来考慮していた量以上の冷却水を注水
する必要があり、その水源である復水貯蔵槽の保有水量
以上となるため、復水貯蔵槽に水を補給する必要が生ず
る。In this case, it is necessary to inject into the nuclear pressure vessel and the reactor containment vessel more cooling water than has been conventionally considered, and since the amount of water held by the condensate storage tank, which is the water source, is greater than that. It becomes necessary to replenish the condensate storage tank with water.
【０００９】従来の技術では、復水貯蔵槽に予備の水補
給配管が設置されており、可搬式ポンプ車などによる水
の補給が可能なようにしている。In the prior art, a spare water supply pipe is installed in the condensate storage tank so that water can be supplied by a portable pump car or the like.
【００１０】しかし、上記シビアアクシデントを想定し
た場合には、その水補給を行うことに関し、以下のよう
な課題が残されていた。However, in the case of the severe accident described above, the following problems remain regarding the water supply.
【００１１】第一に、可搬式ポンプ設備に送水を期待す
る場合、可搬式ポンプ設備がその保管場所から取水口の
水を汲み上げる場所へ移動するのに要する時間、および
可搬式ポンプ設備から復水貯蔵槽の予備の水補給配管送
水口までを接続する送水ホースを敷設し且つ接続するの
に要する時間を考慮すると、原子力圧力容器および原子
炉格納容器に冷却水の注水を開始しなければならない時
に間に合わない可能性がある。First, when the portable pump equipment is expected to send water, the time required for the portable pump equipment to move from its storage location to the location where the water at the intake is pumped up, and the condensed water from the portable pump equipment. Considering the time required to lay and connect the water supply hose that connects the auxiliary water supply pipe of the storage tank to the water supply port, when the injection of cooling water into the nuclear pressure vessel and the reactor containment vessel must be started. It may not be in time.
【００１２】第二に、Ｓ2 クラスの地震を想定した場
合、原子力発電所の構内道路が損壊する危険性があり、
この際には可搬式ポンプ設備がその保管場所から取水口
などの水を汲み上げる場所へ移動できない事態が発生す
ることがある。Secondly, if an S 2 class earthquake is assumed, there is a risk that the road inside the nuclear power plant will be damaged.
In this case, there may occur a situation where the portable pump equipment cannot be moved from its storage location to a location for pumping water such as an intake.
【００１３】本発明は上述した事情を考慮してなされた
もので、復水貯蔵槽への水補給を可能とするとともに、
水補給に要する時間を短縮可能な復水貯蔵槽の水補給設
備を提供することを目的とする。The present invention has been made in consideration of the above-mentioned circumstances, and makes it possible to supply water to a condensate storage tank,
It is an object of the present invention to provide a water supply facility for a condensate storage tank that can reduce the time required for water supply.
【００１４】[0014]
【課題を解決するための手段】本発明に係る復水貯蔵槽
の水補給設備は、上述した課題を解決するために、原子
力発電所の冷却水を貯蔵する復水貯蔵槽と、水を保有す
る保有槽と、この保有槽と上記復水貯蔵槽とを接続し保
有槽から復水貯蔵槽側に下り勾配で敷設された補給配管
と、この補給配管の途中に設置された開閉弁とを備えた
ものである。In order to solve the above-mentioned problems, a water supply facility for a condensate storage tank according to the present invention has a condensate storage tank for storing cooling water of a nuclear power plant and water. A holding tank, a replenishment pipe that connects the holding tank and the condensate storage tank, and is laid from the holding tank to the condensate storage tank with a downward slope; Be prepared.
【００１５】[0015]
【作用】上記の構成を有する本発明において、原子力発
電所の復水貯蔵槽には原子力圧力容器および原子炉格納
容器に注水するための冷却水が貯蔵されている。この復
水貯蔵槽に貯蔵された冷却水を原子力圧力容器および原
子炉格納容器に注水し、復水貯蔵槽の復水が枯渇した場
合、開閉弁を「開」とする。In the present invention having the above structure, the condensate storage tank of the nuclear power plant stores cooling water for pouring water into the nuclear pressure vessel and the reactor containment vessel. The cooling water stored in this condensate storage tank is poured into the nuclear pressure vessel and the reactor containment vessel, and when the condensate in the condensate storage tank is exhausted, the on-off valve is opened.
【００１６】復水貯蔵槽と水が保有される保有槽とを接
続する補給配管を、復水貯蔵槽側に下り勾配で敷設して
おくことにより、水が保有されている保有槽から復水貯
蔵槽へ、その静水頭差により流入する。復水貯蔵槽に水
が補給されることにより、冷却水が確保され、原子力圧
力容器および原子炉格納容器へ冷却水を注水することが
できる。By supplying a replenishment pipe for connecting the condensate storage tank and the holding tank in which water is held to the condensate storage tank side with a downward slope, the condensate from the holding tank in which water is held is condensed. It flows into the storage tank due to the difference in hydrostatic head. By supplying water to the condensate storage tank, cooling water is secured, and cooling water can be poured into the nuclear pressure vessel and the reactor containment vessel.
【００１７】[0017]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【００１８】図１は本発明に係る復水貯蔵槽の水補給設
備の一実施例を示す概略系統図である。図１において、
原子力発電所の復水貯蔵槽１には、図示しない原子力圧
力容器および原子炉格納容器に注水するための冷却水が
貯蔵されている。この貯蔵された冷却水は、冷却水注水
ポンプ２および冷却水注水配管３を経て上記原子力圧力
容器および原子炉格納容器に注水される。FIG. 1 is a schematic system diagram showing an embodiment of a water replenishing facility for a condensate storage tank according to the present invention. In FIG.
A condensate storage tank 1 of a nuclear power plant stores cooling water for pouring water into a nuclear pressure vessel and a reactor containment vessel (not shown). The stored cooling water is injected into the nuclear pressure vessel and the reactor containment vessel through the cooling water injection pump 2 and the cooling water injection pipe 3.
【００１９】また、復水貯蔵槽１には水補給配管４の一
端が接続され、この水補給配管４の他端が自然水である
海水を保有する保有槽５の取水口５ａと接続されてい
る。水補給配管４の途中には開閉弁としての２つの止水
弁６，６と、これらの止水弁６，６間に介装されたスペ
クタクルフランジ７とが設置されている。Further, one end of a water supply pipe 4 is connected to the condensate storage tank 1, and the other end of the water supply pipe 4 is connected to an intake port 5a of a holding tank 5 holding seawater which is natural water. There is. Two water shutoff valves 6 and 6 as open / close valves and a spectacle flange 7 interposed between these water shutoff valves 6 and 6 are installed in the middle of the water supply pipe 4.
【００２０】さらに、復水貯蔵槽１と海水が保有される
保有槽５の取水口５ａとを接続する水補給配管４は、復
水貯蔵槽１側に下り勾配で敷設されており、止水弁６，
６を「開」にすれば、取水口５ａから復水貯蔵槽１へそ
の静水頭差により海水が流入するようになっている。Further, the water supply pipe 4 connecting the condensate storage tank 1 and the intake port 5a of the holding tank 5 in which seawater is held is laid on the side of the condensate storage tank 1 at a descending slope to stop water. Valve 6,
When 6 is opened, seawater flows into the condensate storage tank 1 from the intake port 5a due to the difference in its hydrostatic head.
【００２１】次に、本実施例の作用について説明する。Next, the operation of this embodiment will be described.
【００２２】上記原子力圧力容器および原子炉格納容器
に冷却水を注水する必要が生じた場合、冷却水注水ポン
プ２を運転して冷却水注水配管３を経て復水貯蔵槽１内
の冷却水を原子力圧力容器および原子炉格納容器に注水
する。When it becomes necessary to inject cooling water into the nuclear pressure vessel and the reactor containment vessel, the cooling water injection pump 2 is operated to supply the cooling water in the condensate storage tank 1 through the cooling water injection pipe 3. Water is injected into the nuclear pressure vessel and the containment vessel.
【００２３】また、復水貯蔵槽１内の冷却水が枯渇した
場合には、スペクタクルフランジ７を「開」とした後、
止水弁６，６を「開」とすることにより、保有槽５内の
海水が静水頭差によって水補給配管４を通して復水貯蔵
槽１内に流入する。When the cooling water in the condensate storage tank 1 is exhausted, after the spectacle flange 7 is opened,
By setting the water shutoff valves 6 and 6 to “open”, the seawater in the holding tank 5 flows into the condensate storage tank 1 through the water supply pipe 4 due to the hydrostatic head difference.
【００２４】すると、復水貯蔵槽１内に流入した海水を
水源として冷却水注水ポンプ２および冷却水注水配管３
により、原子力圧力容器および原子炉格納容器への注水
が継続可能となる。Then, using the seawater flowing into the condensate storage tank 1 as a water source, the cooling water injection pump 2 and the cooling water injection pipe 3
As a result, water injection into the nuclear pressure vessel and the containment vessel can be continued.
【００２５】なお、上記実施例では保有槽５内に保有す
る水を海水としたが、これに限らず、雨水などの自然水
やその他の水であってもよい。In the above embodiment, the water held in the holding tank 5 is seawater, but the water is not limited to this and may be natural water such as rainwater or other water.
【００２６】[0026]
【発明の効果】以上説明したように、本発明に係る復水
貯蔵槽の水補給設備によれば、原子力発電所の冷却水を
貯蔵する復水貯蔵槽と、水を保有する保有槽と、この保
有槽と上記復水貯蔵槽とを接続し保有槽から復水貯蔵槽
側に下り勾配で敷設された補給配管と、この補給配管の
途中に設置された開閉弁とを備えたことにより、復水貯
蔵槽への水補給の際に、可搬式ポンプ設備を使用しない
ため、補給開始時間の短縮化が図れる。また、復水貯蔵
槽へ静水頭差により水を流入させるようにしたので、電
源が不要となり、電源喪失時にも水補給が可能になる。
その結果、信頼性を向上させることができる。As described above, according to the water supply facility for the condensate storage tank according to the present invention, the condensate storage tank for storing the cooling water of the nuclear power plant, the holding tank for holding the water, By providing this holding tank and the condensate storage tank by connecting the holding tank to the condensate storage tank side from the holding tank with a descending slope, and by providing an opening / closing valve installed in the middle of this holding pipe, Since no portable pump equipment is used for replenishing water to the condensate storage tank, the replenishment start time can be shortened. Further, since the water is caused to flow into the condensate storage tank by the difference in the hydrostatic head, the power supply is not required, and the water can be replenished even when the power supply is lost.
As a result, reliability can be improved.
【図１】本発明に係る復水貯蔵槽の水補給設備の一実施
例を示す概略系統図。FIG. 1 is a schematic system diagram showing an embodiment of a water supply facility for a condensate storage tank according to the present invention.
１ 復水貯蔵槽 ２ 冷却水注水ポンプ ３ 冷却水注水配管 ４ 水補給配管 ５ 保有槽 ５ａ 取水口 ６ 止水弁 ７ スペクタクルフランジ 1 Condensate storage tank 2 Cooling water injection pump 3 Cooling water injection pipe 4 Water supply pipe 5 Holding tank 5a Water intake 6 Water stop valve 7 Spectacle flange
Claims (1)
蔵槽と、水を保有する保有槽と、この保有槽と上記復水
貯蔵槽とを接続し保有槽から復水貯蔵槽側に下り勾配で
敷設された補給配管と、この補給配管の途中に設置され
た開閉弁とを備えたことを特徴とする復水貯蔵槽の水補
給設備。1. A condensate storage tank for storing cooling water of a nuclear power plant, a holding tank for holding water, and the holding tank and the condensate storage tank are connected to each other from the holding tank to the condensate storage tank side. A water replenishment facility for a condensate storage tank, comprising a replenishment pipe laid at a downward slope and an opening / closing valve installed in the middle of the replenishment pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5041324A JPH06258491A (en) | 1993-03-02 | 1993-03-02 | Water supply equipment for condensate storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5041324A JPH06258491A (en) | 1993-03-02 | 1993-03-02 | Water supply equipment for condensate storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06258491A true JPH06258491A (en) | 1994-09-16 |
Family
ID=12605349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5041324A Pending JPH06258491A (en) | 1993-03-02 | 1993-03-02 | Water supply equipment for condensate storage tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06258491A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014029303A (en) * | 2012-07-31 | 2014-02-13 | Toshiba Corp | Water injection facility and nuclear reactor system |
| JP2014089139A (en) * | 2012-10-31 | 2014-05-15 | Hitachi-Ge Nuclear Energy Ltd | Nuclear fuel cooling method and nuclear fuel cooling device |
| WO2018062916A1 (en) * | 2016-09-30 | 2018-04-05 | 한국수력원자력 주식회사 | Coolant tank, and passive containment cooling system comprising same |
| WO2018062917A1 (en) * | 2016-09-30 | 2018-04-05 | 한국수력원자력 주식회사 | Cooling water reservoir and passive cooling system comprising same for reactor containment building |
| KR20180036641A (en) * | 2016-09-30 | 2018-04-09 | 한국수력원자력 주식회사 | Coolant tank, and containment passive cooling system including the same |
-
1993
- 1993-03-02 JP JP5041324A patent/JPH06258491A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014029303A (en) * | 2012-07-31 | 2014-02-13 | Toshiba Corp | Water injection facility and nuclear reactor system |
| JP2014089139A (en) * | 2012-10-31 | 2014-05-15 | Hitachi-Ge Nuclear Energy Ltd | Nuclear fuel cooling method and nuclear fuel cooling device |
| WO2018062916A1 (en) * | 2016-09-30 | 2018-04-05 | 한국수력원자력 주식회사 | Coolant tank, and passive containment cooling system comprising same |
| WO2018062917A1 (en) * | 2016-09-30 | 2018-04-05 | 한국수력원자력 주식회사 | Cooling water reservoir and passive cooling system comprising same for reactor containment building |
| KR20180036641A (en) * | 2016-09-30 | 2018-04-09 | 한국수력원자력 주식회사 | Coolant tank, and containment passive cooling system including the same |
| US11081242B2 (en) | 2016-09-30 | 2021-08-03 | Korea Hydro & Nuclear Power Co., Ltd. | Coolant tank, and passive containment cooling system comprising same |
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