JPS60247197A - Nuclear reactor well water purifying-drainage device - Google Patents
Nuclear reactor well water purifying-drainage deviceInfo
- Publication number
- JPS60247197A JPS60247197A JP59102575A JP10257584A JPS60247197A JP S60247197 A JPS60247197 A JP S60247197A JP 59102575 A JP59102575 A JP 59102575A JP 10257584 A JP10257584 A JP 10257584A JP S60247197 A JPS60247197 A JP S60247197A
- Authority
- JP
- Japan
- Prior art keywords
- reactor well
- water
- pool
- reactor
- well water
- 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
- Y02E30/30—Nuclear fission reactors
Landscapes
- Treatment Of Water By Ion Exchange (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 〔発明の利用分野〕 本発明は原子炉ウェル水浄化・排水装置に関する。[Detailed description of the invention] [Field of application of the invention] The present invention relates to a nuclear reactor well water purification/drainage system.
従来の原子炉ウェル水浄化・排水装置について第１図及
び第２図を用いて以下に説明する。A conventional reactor well water purification/drainage system will be described below with reference to FIGS. 1 and 2.
発電所の燃料交換は原子炉圧力容器１の蓋を取り外し、
プールゲート２０を開けて使用済燃料を原子炉圧力容器
１から使用済燃料貯蔵プール３へ移送して行う。この際
、交換中の使用済燃料から発生する崩壊熱の除去及び作
業時の被曝低減を目的として、原子炉ウェル２に原子炉
ウェル水移送ポンプ９によって原子炉ウェル水貯蔵槽７
の水が供給され、原子炉ウェル２の水張りが行われる。To replace the fuel at the power plant, remove the lid of the reactor pressure vessel 1,
This is done by opening the pool gate 20 and transferring the spent fuel from the reactor pressure vessel 1 to the spent fuel storage pool 3. At this time, for the purpose of removing decay heat generated from the spent fuel during exchange and reducing radiation exposure during work, a reactor well water transfer pump 9 is transferred to the reactor well water storage tank 7.
water is supplied, and the reactor well 2 is filled with water.
燃料交換終了後は、プールゲート２０を閉鎖し原子炉ウ
ェル２に張られた水を原子炉ウェル水貯蔵槽７に戻すが
、この排水には原子炉圧力容器１内及び使用済燃料から
発生した放射性不純物等が多く含まれる可能性があるこ
とから、燃料プール冷却浄化系の浄化装置６Ａ、６Ｂを
利用して浄化した後、原子炉ウェル水貯蔵槽７に戻す方
法を採用している。After the fuel exchange is completed, the pool gate 20 is closed and the water filled in the reactor well 2 is returned to the reactor well water storage tank 7, but this wastewater contains water generated from inside the reactor pressure vessel 1 and from the spent fuel. Since the water may contain a large amount of radioactive impurities, a method is adopted in which the water is purified using purifiers 6A and 6B of the fuel pool cooling and purification system, and then returned to the reactor well water storage tank 7.
一方、使用済燃料はある一定期間、使用済燃料貯蔵プー
ル３に貯蔵され、崩壊による発生熱が十分低下して安全
と認められた後発電所外に搬出される。燃料プール冷却
浄化系はプールゲート２０閉鎖後に上記使用済燃料貯蔵
プール３内で発生する崩壊熱を除去して使用済燃料貯蔵
プール水（以下プール水と略称）の温度を規定値以下に
抑制すると共に、浄化装置６Ａ、６Ｂによりプール水を
浄化して、プール水の透明度及び規定不純物濃度等を維
持する機能を有している。プール水は使用済燃料貯蔵プ
ール３からスキマセキ２１を通ってスキマサージタンク
４に入り、ポンプ５Ａ・５Ｂで昇圧され浄化装置６Ａ、
６Ｂ、冷却装置８を通って浄化・冷却された後使用済燃
料貯蔵プール３に戻って再び循環する。On the other hand, the spent fuel is stored in the spent fuel storage pool 3 for a certain period of time, and is transported out of the power plant after the heat generated by decay has sufficiently decreased and it is deemed safe. The fuel pool cooling and purification system removes the decay heat generated in the spent fuel storage pool 3 after the pool gate 20 is closed, and suppresses the temperature of the spent fuel storage pool water (hereinafter referred to as pool water) to below a specified value. In addition, the purifiers 6A and 6B purify the pool water to maintain the transparency and specified impurity concentration of the pool water. Pool water enters the skimmer surge tank 4 from the spent fuel storage pool 3 through the skimmer tank 21, is pressurized by the pumps 5A and 5B, and is sent to the purifier 6A,
6B, after being purified and cooled through the cooling device 8, it returns to the spent fuel storage pool 3 and is circulated again.
第１図に示す従来の実施例（その１）では、原子炉ウェ
ル排水管１１とスキマサージタンク４からのプール水循
環配管は並列に設置されるポンプ５Ａ、５Ｂ吸込部分岐
点の上流で合流し、かつポンプ５Ａ、５Ｂ吐出側配管も
合流した後に浄化装置６Ａ、６Ｂに導かれる構成となっ
ていたため、原子炉ウェル２の排水をポンプ５Ａ、５Ｂ
及びその排水の浄化を浄化装置６Ａ、６Ｂで行っている
間は、使用済燃料貯蔵プール３の冷却・浄化を行うこと
が出来ないため、プール水の温度及び濁度が上昇してし
まう問題点があった。In the conventional embodiment (part 1) shown in FIG. 1, the reactor well drain pipe 11 and the pool water circulation pipe from the skimmer surge tank 4 join upstream of the branch point of the suction section of pumps 5A and 5B installed in parallel. , and the discharge side pipes of pumps 5A and 5B were configured to be led to purifiers 6A and 6B after merging, so waste water from reactor well 2 was routed to pumps 5A and 5B.
The problem is that the temperature and turbidity of the pool water increase because the spent fuel storage pool 3 cannot be cooled and purified while the purification devices 6A and 6B are purifying the wastewater. was there.
第２図には従来の実施例（その２）を示す。本実施例で
は原子炉ウェル排水管１１をポンプ５Ａと吸込側保修用
弁１３Ａの間に接続し、がっ浄化装置６Ａ、６Ｂのバイ
パス配管をポンプ５Ｂと吐出側保修用弁１４Ｂ゛の間に
接続した構成となっている。この構成によれば、吸込側
保修用弁１３Ａ、吐出側保修用弁１４Ｂ、浄化装置バイ
パス弁１７Ａ及び冷却装置入口弁１９を閉じることによ
って。FIG. 2 shows a conventional embodiment (part 2). In this embodiment, the reactor well drain pipe 11 is connected between the pump 5A and the suction side maintenance valve 13A, and the bypass piping of the gas purification devices 6A and 6B is connected between the pump 5B and the discharge side maintenance valve 14B. It has a connected configuration. According to this configuration, by closing the suction side maintenance valve 13A, the discharge side maintenance valve 14B, the purifier bypass valve 17A, and the cooling device inlet valve 19.
原子炉ウェル水は、原子炉ウェル２→原子炉ウエル排水
管１１→ポンプ５Ａ→浄化装置６Ａ又は６Ｂ→原子炉ウ
エル水貯蔵槽７のルートを、プール水は、スキマサージ
タンク４→ポンプ５Ｂ→浄化装置バイパス弁１７Ｂ→冷
却装Ｍ８→使用済燃料貯蔵プール３のルートをそれぞれ
別々のルートを通って排水・循環することができるため
１、原子炉ウェル水の浄化・排水とプール水の冷却を同
時に行うことが可能であり、前記従来の実施例（その１
）において問題となっていた原子炉ウェル水排水時のプ
ール水温上昇を解決したものとなっている。しかしなが
ら本従来の実施例（その２）においても、原子炉ウェル
水排水時には、プール水は浄化装置６Ａ、６Ｂをバイパ
スして循環する必要があるためプール水の浄化を行うこ
とができず、又、使用済燃料貯蔵プール３内で発生した
放射性不純物等を含むプール水が浄化装置６Ａ、６Ｂを
経ずに直接冷却装置８に導かれるため、冷却装置８が汚
染される可能性があった。Reactor well water is routed through reactor well 2 → reactor well drain pipe 11 → pump 5A → purifier 6A or 6B → reactor well water storage tank 7. Pool water is routed through skimmer surge tank 4 → pump 5B → Purification device bypass valve 17B→cooling device M8→spent fuel storage pool 3 routes can be drained and circulated through separate routes; 1. Purification and drainage of reactor well water and cooling of pool water are possible. It is possible to simultaneously perform the above-mentioned conventional embodiment (part 1).
), which solved the problem of rising pool water temperature when draining reactor well water. However, even in this conventional embodiment (part 2), when draining the reactor well water, the pool water needs to be circulated bypassing the purification devices 6A and 6B, so the pool water cannot be purified. Since the pool water containing radioactive impurities generated in the spent fuel storage pool 3 was directly led to the cooling device 8 without passing through the purification devices 6A and 6B, there was a possibility that the cooling device 8 could be contaminated.
本発明の目的は、原子炉ウェル水の浄化・排水を行って
いる間も、燃料プール冷却浄化系のプール水の冷却及び
浄化機能を損わず、かつ燃料プール冷却浄化系の冷却装
置の汚染を防止することのできる原子炉ウェル水浄化・
排水装置を提供するにある。It is an object of the present invention to prevent the cooling and purification functions of the fuel pool cooling and purification system from being impaired while the reactor well water is being purified and drained, and to avoid contamination of the cooling device of the fuel pool cooling and purification system. Reactor well water purification and
Provide drainage equipment.
本発明は並列に設置される浄化装置の少なくとも１基の
出口側から原子炉ウェル水貯蔵槽への連絡配管又は、前
記浄化装置の出口側合流部に仕切弁を設置することによ
って、前記の目的を達成できるようにしたものである。The present invention achieves the above object by installing a gate valve at the connecting pipe from the outlet side of at least one of the purification devices installed in parallel to the reactor well water storage tank or at the outlet side confluence of the purification devices. It has been made possible to achieve this.
以下に本発明の実施例を図面を用いて説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第３図に本発明による実施例の１つを示すが、原子炉ウ
ェル排水管１１をポンプ５Ａと吸込側保修用弁１３Ａの
間に接読することは、前記従来の実施例（その２）と同
一である。本実施例は浄化装置６Ａの出口から原子炉ウ
ェル水貯蔵槽７への連絡配管２２を新たに設置したこと
に特徴がある。FIG. 3 shows one embodiment according to the present invention, but connecting the reactor well drain pipe 11 between the pump 5A and the suction side maintenance valve 13A is similar to the conventional embodiment (Part 2). is the same as This embodiment is characterized in that a connecting pipe 22 from the outlet of the purification device 6A to the reactor well water storage tank 7 is newly installed.
この連絡配管１１の設置により、原子炉ウェル水は、原
子炉ウェル２→原子炉ウエル排水管１１→ポンプ５Ａを
、又、プール水はスキマサージタンクリポンプ５Ｂを通
って、ポンプ５Ａ、５Ｂの吐出側で合流する。合流した
原子炉ウェル水とプール水は浄化装置６Ａ、６Ｂに導か
れ、一部は連絡配管２２を通って原子炉ウェル水貯蔵槽
７へ排水され、残りは冷却装置入口弁１９及び冷却装置
８を通って冷却された後、使用済燃料貯蔵プール３に戻
る。この際の原子炉ウェル貯蔵槽７への排水量と、使用
済燃料貯蔵槽３への循環水量は、浄化装置６Ａ、６Ｂの
内部に設置されている流量制御弁によって自動的に１７
２ずつに配分されるため、使用済燃料貯蔵プール３の水
位が上昇又は低下することはない。又、前述の様に原子
炉ウェル水とプール水は燃料交換中プールゲート２ｏが
開いているため、たがいにつながっており、放射性不純
物濃度等の水質及び温度はほぼ同一であるため、ポンプ
５Ａ、５Ｂの吐出側で合流することに関して水質上・温
度上の問題は無い。With the installation of this connecting pipe 11, reactor well water passes through the reactor well 2 → reactor well drain pipe 11 → pump 5A, and pool water passes through the skimmer surge tank pump 5B to pumps 5A and 5B. They merge on the discharge side. The combined reactor well water and pool water are led to the purification devices 6A and 6B, a portion of which is drained to the reactor well water storage tank 7 through the connecting pipe 22, and the rest is passed through the cooling device inlet valve 19 and the cooling device 8. After passing through and being cooled, it returns to the spent fuel storage pool 3. At this time, the amount of water discharged to the reactor well storage tank 7 and the amount of circulating water to the spent fuel storage tank 3 are automatically controlled by flow control valves installed inside the purification devices 6A and 6B.
Since the spent fuel storage pool 3 is divided into two parts, the water level of the spent fuel storage pool 3 will not rise or fall. In addition, as mentioned above, the reactor well water and pool water are connected to each other because the pool gate 2o is open during fuel exchange, and since the water quality and temperature, such as the concentration of radioactive impurities, are almost the same, pumps 5A, There are no problems regarding water quality or temperature regarding the merging on the discharge side of 5B.
なお、本実施例においては浄化装置６Ａの出口に原子炉
ウェル水貯蔵槽７への連絡配管２２を接続したが、並列
に設置されているもう一方の浄化装置１ｆ６Ｂの出口か
ら接続してももちろん良い。又、本実施例においては、
連絡配管２２の途中に、通常運転中の燃料プール冷却浄
化系の運転を防げない様に止め弁２３を設置することが
望ましい。In this embodiment, the connection pipe 22 to the reactor well water storage tank 7 is connected to the outlet of the purification device 6A, but it can also be connected from the outlet of the other purification device 1f6B installed in parallel. good. Moreover, in this example,
It is desirable to install a stop valve 23 in the middle of the connecting pipe 22 so as not to prevent the operation of the fuel pool cooling and purification system during normal operation.
第４図には本発明による他の実施例を示す。本実施例も
別々のポンプ５Ａ、５Ｂによって導かれた原子炉ウェル
水とプール水が、ポンプ５Ａ。FIG. 4 shows another embodiment according to the present invention. In this embodiment as well, the reactor well water and pool water are supplied to the pump 5A by separate pumps 5A and 5B.
５Ｂの吐出側で合流することは前述の実施例と同じであ
るが、浄化装置６Ａの出口から原子炉ウェル水貯蔵槽７
への連絡配管２２の代わりに、浄化装置６Ａ、６Ｂの出
口側合流部に仕切弁２４を設置したことに特徴がある。5B on the discharge side is the same as in the previous embodiment, but from the outlet of the purification device 6A to the reactor well water storage tank 7.
A feature is that a gate valve 24 is installed at the outlet side merging section of the purifiers 6A and 6B instead of the connecting pipe 22 to the purifiers 6A and 6B.
本実施例によれば仕切弁２４を閉じることによって浄化
装置６Ａから原子炉ウェル水貯蔵槽°７へのルートと、
浄化装置６Ｂから冷却装置８、使用済燃料貯蔵プール３
へのルートが別々に形成されるため、ポンプ５Ａ。According to this embodiment, by closing the gate valve 24, the route from the purification device 6A to the reactor well water storage tank °7,
From the purification device 6B to the cooling device 8 and the spent fuel storage pool 3
Pump 5A since the routes to are formed separately.
５Ｂの吐出側で合流した原子炉ウェル水とプール水は前
述の実施例と同様、１／２は原子炉ウェル水貯蔵槽７へ
排水され、残りの１／２は冷却された後使用済燃料貯蔵
プール３に戻る。1/2 of the reactor well water and pool water that merge on the discharge side of 5B is drained to the reactor well water storage tank 7, as in the previous embodiment, and the remaining 1/2 is cooled and then used as spent fuel. Return to storage pool 3.
第５図は本発明による他の実施例の１つであり、第３図
又は第４図に示す実施例に加えて、ポンプ５Ａと吐出側
保修用弁１４Ａの間から浄化装置６Ａの入口側に連絡配
管２５を設置した例である。FIG. 5 shows one of the other embodiments according to the present invention, and in addition to the embodiments shown in FIGS. 3 or 4, the inlet side of the purifier 6A is This is an example in which a connecting pipe 25 is installed.
前述の様に原子炉ウェル水とプール水の合流に関しては
通常は水質上・温度上とも問題は無いが、燃料の破損・
作業の手違い等の何らかの原因によって原子炉ウェル水
又はプール水の水質・温度が規準値より悪化して、合流
が好ましくないと考えられる場合は、本実施例に示すよ
うな連絡配管２５を設置して、吐出側保修用弁１４Ａ及
び浄化装置入口弁１’５ Ａを閉じれば、原子炉ウェル
水とプール水は合流することなくそれぞれ浄化・排水及
び浄化・冷却される。本実施例においても、通常運転中
の燃料プール冷却浄化系の運転を防げない様に止め弁２
６を設置するのが望ましい。As mentioned above, there are usually no problems in terms of water quality or temperature when reactor well water and pool water join together, but fuel damage and
If the quality and temperature of the reactor well water or pool water deteriorates from standard values due to some reason such as a mistake in work, and it is considered that merging is not desirable, a connecting pipe 25 as shown in this example is installed. Then, if the discharge side maintenance valve 14A and the purifier inlet valve 1'5A are closed, the reactor well water and pool water are purified, drained, and purified and cooled, respectively, without merging. In this embodiment as well, the stop valve 2
It is desirable to install 6.
なお、第３図、第４図及び第５図における実施例におい
てポンプ５Ａ、５Ｂ、浄化装置６Ａ。In addition, in the embodiments shown in FIGS. 3, 4, and 5, the pumps 5A, 5B, and the purifying device 6A.
６Ｂ及び他の並列に設置される弁・配管等については、
Ａ、Ｂをそれぞれ別個の機器として取り扱っているが、
これは説明を解かり易くするために便宜的に用いた符号
であって、Ａ、Ｂがそれぞれ入れ代わってももちろん良
い。Regarding 6B and other valves and piping installed in parallel,
A and B are treated as separate devices, but
These symbols are used for convenience in order to make the explanation easier to understand, and it goes without saying that A and B may be interchanged.
以上の様に本発明によれば、原子炉ウェル水の浄化・排
水を行っている間でもプール水の冷却・浄化を行うこと
が可能であるため、以下の効果がある。As described above, according to the present invention, the pool water can be cooled and purified even while the reactor well water is being purified and drained, so the following effects can be achieved.
（１）使用済燃料貯蔵プールの水質維持。(1) Maintaining water quality in the spent fuel storage pool.
（２）燃料プール冷却浄化系の冷却装置の汚染防止。(2) Preventing contamination of the cooling device of the fuel pool cooling and purification system.
第１図及び第２図は従来の例を示す系統図、第３図、第
４図及び第５図は本発明による実施例の系統図である。
′
１・・・原子炉圧力容器、２・・・原子炉ウェル、５Ａ
。
５Ｂ・・・ポンプ、６Ａ、６Ｂ・・・浄化装置、７・・
・原子炉ウェル水貯蔵槽、８・・・冷却装置、９・・・
原子炉ウェル水移送ポンプ、１２・・・スキマサージタ
ンク出口弁、１３Ａ、１３Ｂ・・・吸込側保修用弁、１
４Ａ。
１４Ｂ・・・吐出側保修用弁、１５Ａ、１５Ｂ・・・浄
化装置入口弁、１６Ａ、１６Ｂ・・・浄化装置出口弁、
１７Ａ、１７Ｂ・・・浄化装置バイパス弁、１８・・・
原子炉ウェル水排水弁、１９・・・冷却装置人口弁、２
０・・・プールゲート、２３．２６・・・止め弁、２４
第１図
第２鐙
■
挑３０
第４図1 and 2 are system diagrams showing a conventional example, and FIGS. 3, 4, and 5 are system diagrams of an embodiment according to the present invention. '1...Reactor pressure vessel, 2...Reactor well, 5A
. 5B...Pump, 6A, 6B...Purifier, 7...
・Reactor well water storage tank, 8...Cooling device, 9...
Reactor well water transfer pump, 12... Skimmer surge tank outlet valve, 13A, 13B... Suction side maintenance valve, 1
4A. 14B...Discharge side maintenance valve, 15A, 15B...Purifier inlet valve, 16A, 16B...Purifier outlet valve,
17A, 17B...Purifier bypass valve, 18...
Reactor well water drain valve, 19...Cooling device population valve, 2
0...Pool gate, 23.26...Stop valve, 24
Fig. 1 Stirrup 2 ■ Challenge 30 Fig. 4
Claims (1)
置される原子炉ウェルと、前記原子炉ウェルに燃料交換
時に張られた水張り水を、燃料交換後に排水する配管系
及び排水された水張り水を貯蔵する原子炉ウェル水貯蔵
槽を備え、前記原子炉ウェルから原子炉ウェル水貯蔵槽
への排水の移送及び排水の浄化を、使用済燃料貯蔵プー
ル水の冷却・浄化を行うために並列に設置されるポンプ
と並列に設置される浄化装置を共用して行う設備におい
て、前記浄化装置の少なくとも１基の出口側から前記原
子炉ウェル水貯蔵槽への連絡配管を設置したことを特徴
とする原子炉ウェル水浄化・排水装置。■A reactor well installed above the reactor pressure vessel in contact with the reactor pressure vessel, and a piping system for draining the water filled in the reactor well during fuel exchange after the fuel exchange, and A reactor well water storage tank for storing water filled water is provided, and the wastewater is transferred from the reactor well to the reactor well water storage tank and the wastewater is purified, and the spent fuel storage pool water is cooled and purified. A facility in which a pump installed in parallel and a purification device installed in parallel are shared, characterized in that a connecting pipe is installed from the outlet side of at least one of the purification devices to the reactor well water storage tank. Reactor well water purification and drainage equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59102575A JPS60247197A (en) | 1984-05-23 | 1984-05-23 | Nuclear reactor well water purifying-drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59102575A JPS60247197A (en) | 1984-05-23 | 1984-05-23 | Nuclear reactor well water purifying-drainage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60247197A true JPS60247197A (en) | 1985-12-06 |
Family
ID=14331022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59102575A Pending JPS60247197A (en) | 1984-05-23 | 1984-05-23 | Nuclear reactor well water purifying-drainage device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60247197A (en) |
-
1984
- 1984-05-23 JP JP59102575A patent/JPS60247197A/en active Pending
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