JP2000019294A - Facility for storing and transporting radioactive waste liquor - Google Patents
Facility for storing and transporting radioactive waste liquorInfo
- Publication number
- JP2000019294A JP2000019294A JP10184363A JP18436398A JP2000019294A JP 2000019294 A JP2000019294 A JP 2000019294A JP 10184363 A JP10184363 A JP 10184363A JP 18436398 A JP18436398 A JP 18436398A JP 2000019294 A JP2000019294 A JP 2000019294A
- Authority
- JP
- Japan
- Prior art keywords
- waste liquid
- line
- automatic valve
- concentration
- dilution 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
Landscapes
- Accessories For Mixers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は原子力発電所や再処
理施設等に設置される放射性濃縮廃液を貯蔵する濃縮タ
ンク内の放射性濃縮廃液を希釈して移送するための放射
性廃液の貯蔵，移送設備に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radioactive waste liquid storage and transfer facility for diluting and transferring a radioactive concentrated waste liquid in a concentration tank for storing a radioactive concentrated waste liquid installed in a nuclear power plant or a reprocessing facility. About.
【０００２】[0002]
【従来の技術】例えば使用済燃料の再処理では燃料集合
体に閉じ込められている放射性物質が工程内に取り出さ
れウランおよびプルトニウムの回収が行われる。これに
伴ない多種多様の放射性廃棄物が発生する。使用済燃料
は硝酸により溶解されその後の処理によって高レベル放
射性廃液を発生する。この高レベル放射性廃液は一旦濃
縮タンク内に貯蔵されて濃縮された後、固化工程に移さ
れ固化処理されて貯蔵される。2. Description of the Related Art In the reprocessing of spent fuel, for example, radioactive substances trapped in a fuel assembly are taken out in a process and uranium and plutonium are recovered. A variety of radioactive wastes are generated along with this. Spent fuel is dissolved by nitric acid and subsequent processing produces high level radioactive liquid waste. This high-level radioactive waste liquid is once stored in a concentration tank and concentrated, then transferred to a solidification step, solidified, and stored.
【０００３】また、中レベル放射性廃液は再処理プロセ
スにおいて中間的に発生するが、高レベル放射性廃液に
比較して比放射能および核種崩壊による発熱は低いが、
濃縮されて高レベル放射性濃縮廃液となり、濃縮タンク
に貯蔵される。この高レベル濃縮廃液は中和処理，油分
除去処理された後、放出廃液として移送され、再濃縮さ
れた後、固化処理される。[0003] In addition, medium-level radioactive liquid waste is generated in the middle of the reprocessing process, but has lower specific activity and lower heat generation due to nuclide decay than high-level radioactive liquid waste.
It is concentrated to a high-level radioactive waste liquid and stored in a concentration tank. This high-level concentrated waste liquid is subjected to neutralization treatment and oil removal treatment, transferred as a discharge waste liquid, re-concentrated, and then solidified.
【０００４】一方、沸騰水型原子力発電所には復水脱塩
装置や原子炉冷却材浄化系のろ過脱塩器が設置されてい
るが、このろ過脱塩器内に充填したイオン交換樹脂を再
生する際にも放射性廃液が生じ、この放射性廃液を濃縮
タンクに送り込んで貯蔵したり濃縮したりする。On the other hand, a condensate demineralizer and a filter desalinator for purifying a reactor coolant are installed in a boiling water type nuclear power plant. Radioactive waste liquid is also generated during regeneration, and this radioactive waste liquid is sent to a concentration tank for storage or concentration.
【０００５】図５により従来のこの種の濃縮タンクと、
この濃縮タンクを設置した放射性廃液の貯蔵，移送設備
の一例を説明する。図５中、符号１は上端が密閉された
濃縮タンクで、この濃縮タンク１内に撹拌ノズル２が設
けられている。この撹拌ノズル２に接続する撹拌ライン
３がタンク１の下端から上端に達する循環配管系となっ
ており、この撹拌ライン３には第１の自動弁４，循環ポ
ンプ５および第２の自動弁６が設けられている。[0005] FIG. 5 shows a conventional concentration tank of this type,
An example of a facility for storing and transferring radioactive waste liquid provided with this concentration tank will be described. In FIG. 5, reference numeral 1 denotes a concentration tank whose upper end is sealed, and a stirring nozzle 2 is provided in the concentration tank 1. A stirring line 3 connected to the stirring nozzle 2 forms a circulation piping system extending from the lower end to the upper end of the tank 1. The stirring line 3 includes a first automatic valve 4, a circulation pump 5, and a second automatic valve 6. Is provided.
【０００６】撹拌ライン３から分岐して第３の自動弁７
が接続し、第３の自動弁７の下流側に移送ライン８が接
続している。濃縮タンク１，撹拌ライン３および移送ラ
イン８には保温や加熱するためのヒータ９が設けられて
いる。濃縮タンク１内の濃縮廃液はヒータ２で加熱され
て濃縮倍率が高められ、濃縮タンク１内で濃縮廃液中の
塩の貯蔵量を増加させている。The third automatic valve 7 branches off from the stirring line 3
Are connected, and a transfer line 8 is connected downstream of the third automatic valve 7. The concentration tank 1, the stirring line 3 and the transfer line 8 are provided with a heater 9 for keeping the temperature or heating. The concentrated waste liquid in the concentration tank 1 is heated by the heater 2 to increase the concentration ratio, and the amount of stored salt in the concentrated waste liquid in the concentration tank 1 is increased.
【０００７】濃縮廃液を濃縮タンク１から移送先へ移送
する場合には第１の自動弁４，第２の自動弁７，第３の
自動弁６を開き、循環ポンプ５を運転し、撹拌ライン３
に流し、撹拌ノズル２で撹拌しながら移送ライン８から
移送するが、濃縮タンク１，撹拌ライン３のほか、移送
ライン８へもヒータ９を設置し、貯蔵時の塩濃度の状態
で移送を行っている。この場合、希釈水は投入していな
い。When transferring the concentrated waste liquid from the concentration tank 1 to the transfer destination, the first automatic valve 4, the second automatic valve 7, and the third automatic valve 6 are opened, the circulating pump 5 is operated, and the stirring line is operated. 3
Then, the mixture is transferred from the transfer line 8 while being stirred by the stirring nozzle 2. In addition to the concentration tank 1 and the stirring line 3, the heater 9 is installed in the transfer line 8, and the transfer is performed in the state of the salt concentration at the time of storage. ing. In this case, no dilution water was added.
【０００８】[0008]
【発明が解決しようとする課題】上記構成のような従来
の濃縮廃液の貯蔵，移送設備では、濃縮タンク１から移
送先までの距離が長い場合、ヒータ９を設けなければな
らず、しかもそのための運転コストがかかる。ヒータ９
を設けない場合には濃縮廃液の塩の溶解度が低下するこ
とから濃縮タンク１内の塩貯蔵量が低下し、濃縮タンク
１を余分に増設しなければならない課題がある。In the conventional storage and transfer equipment for concentrated waste liquid having the above-described structure, when the distance from the concentration tank 1 to the transfer destination is long, a heater 9 must be provided. Operating costs are high. Heater 9
If the concentration tank is not provided, the solubility of the salt in the concentrated waste liquid is reduced, so that the amount of salt stored in the concentration tank 1 is reduced, and there is a problem that the concentration tank 1 needs to be additionally provided.
【０００９】なお、ここで、塩とは例えば復水脱塩装置
内のイオン交換樹脂を再生する場合に硫酸（Ｈ2 Ｓ
Ｏ4 ）と、か性ソーダ（ＮａＯＨ）などを使用するが、
この再生時に生じる硫酸ナトリウム等を指している。Here, the salt means, for example, sulfuric acid (H 2 S) when regenerating an ion exchange resin in a condensate desalination apparatus.
O 4 ) and caustic soda (NaOH)
It refers to sodium sulfate and the like generated during this regeneration.
【００１０】本発明は上記課題を解決するためになされ
たもので、放射性濃縮廃液の移送ラインにヒータを設け
ることなく、濃縮タンクの容量や基数を低減し、コスト
ダウンを図ることができる放射性廃液の貯蔵，移送設備
を提供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is possible to reduce the volume and the number of the concentration tanks and reduce the cost without providing a heater on a transfer line for the radioactive waste liquid. Storage and transfer equipment.
【００１１】[0011]
【課題を解決するための手段】請求項１の発明は、放射
性濃縮廃液を貯蔵する濃縮タンクに、希釈水流入ライン
を接続し、かつこの希釈水流入ラインから流入する希釈
水と前記放射性濃縮廃液の混合液を前記濃縮タンクから
流出して前記濃縮タンクへ戻す第１の自動弁，循環ポン
プ及び第２の自動弁を有する循環配管系の撹拌ラインを
設け、この撹拌ラインから二枝分岐してそれぞれの分岐
管にサンプリング部と第３の自動弁を接続し、この第３
の自動弁の下流側に移送ラインを接続し、この移送ライ
ンを除く前記濃縮タンクと前記撹拌ラインにヒータを設
けてなることを特徴とする。According to a first aspect of the present invention, a dilution water inflow line is connected to a concentration tank for storing a radioactive concentration waste liquid, and the dilution water flowing from the dilution water inflow line and the radioactive concentration waste liquid are connected to the dilution tank. A stirring line of a circulation piping system having a first automatic valve, a circulation pump, and a second automatic valve for flowing the mixed solution out of the concentration tank and returning the mixture to the concentration tank is provided. A sampling section and a third automatic valve are connected to each of the branch pipes.
A transfer line is connected downstream of the automatic valve, and a heater is provided in the concentration tank and the stirring line except for the transfer line.
【００１２】本発明によれば、濃縮廃液の貯蔵，移送設
備において、移送ラインにヒータを設ける必要がなく、
濃縮廃液を所定の濃度に希釈して移送することができ
る。よって、移送ラインが長い場合、濃縮タンクの増設
による配置スペースの追加を行う必要がなく、ヒータ設
備および運転コストの低減に寄与できる。According to the present invention, in the storage and transfer equipment for concentrated waste liquid, it is not necessary to provide a heater in the transfer line.
The concentrated waste liquid can be transferred after being diluted to a predetermined concentration. Therefore, when the transfer line is long, it is not necessary to add an arrangement space by increasing the concentration tank, which can contribute to a reduction in heater equipment and operating costs.
【００１３】請求項２の発明は、放射性濃縮廃液の濃縮
タンクに第１の自動弁，循環ポンプおよび第２の自動弁
を有する循環配管系の撹拌ラインを設け、この撹拌ライ
ンから二枝分岐してそれぞれの分岐管にサンプリング部
と第３の自動弁を接続し、この第３の自動弁の下流側に
廃液流量計，廃液流量調整弁，希釈水注入ラインおよび
ラインミキサを順次直列接続した移送ラインを設け、前
記廃液流量計と前記廃液流量調整弁および前記希釈水ラ
インに設けた希釈水流量計と希釈水流量調整弁が電気的
に接続する制御盤を設けてなることを特徴とする。According to a second aspect of the present invention, a stirring line of a circulation piping system having a first automatic valve, a circulation pump, and a second automatic valve is provided in a concentration tank for radioactive concentrated waste liquid, and the stirring line is branched into two branches. A sampling unit and a third automatic valve are connected to each of the branch pipes, and a waste liquid flow meter, a waste liquid flow control valve, a dilution water injection line, and a line mixer are sequentially connected downstream of the third automatic valve. A line is provided, and a control panel is provided in which the waste liquid flow meter and the waste liquid flow control valve and the dilution water flow meter and the dilution water flow control valve provided in the dilution water line are electrically connected.
【００１４】本発明によれば、サンプリングにより濃縮
廃液の塩濃度を確認後、希釈水を注入しラインミキサで
混合して濃縮廃液を所定の濃度にして移送ラインから移
送できる。According to the present invention, after confirming the salt concentration of the concentrated waste liquid by sampling, the dilution water can be injected and mixed by the line mixer to transfer the concentrated waste liquid to a predetermined concentration and can be transferred from the transfer line.
【００１５】請求項３の発明は、前記サンプリング部の
代りに濃度計を設け、この濃度計を前記流量調整弁と電
気的に接続してなることを特徴とする。本発明によれ
ば、濃度計により濃縮廃液の塩濃度を確認後、濃縮廃液
に対する希釈割合を制御盤で設定し、自動で濃縮廃液を
所定の濃度に調整し、移送することができる。According to a third aspect of the present invention, a densitometer is provided in place of the sampling unit, and the densitometer is electrically connected to the flow control valve. ADVANTAGE OF THE INVENTION According to this invention, after confirming the salt concentration of a concentrated waste liquid with a densitometer, the dilution ratio with respect to a concentrated waste liquid can be set by a control panel, and the concentrated waste liquid can be automatically adjusted to a predetermined concentration and transferred.
【００１６】請求項４の発明は、前記ラインミキサの下
流側に濃度計を設け、この濃度計を前記流量調整弁と電
気的に接続してなることを特徴とする。本発明によれ
ば、濃縮移送時の塩濃度を制御盤で設定しておき、濃度
計により塩濃度を自動計測し、制御盤内で所定の濃度廃
液の塩濃度となるように制御し、移送することができ
る。A fourth aspect of the present invention is characterized in that a densitometer is provided downstream of the line mixer, and the densitometer is electrically connected to the flow control valve. According to the present invention, the salt concentration at the time of concentration transfer is set in the control panel, the salt concentration is automatically measured by the concentration meter, and the concentration is controlled so as to be a predetermined concentration waste liquid in the control panel, and the transfer is performed. can do.
【００１７】[0017]
【発明の実施の形態】図１により本発明に係る放射性廃
液の貯蔵，移送設備の第１の実施の形態を説明する。な
お、図１中、図５と同一部分には同一符号を付して重複
する部分の説明は省略する。本実施の形態が従来例と異
なる点は濃縮タンク１の上端に希釈水流入ライン10を接
続したことにある。希釈水流入ライン10には積算流量計
11と手動弁12が直列接続されており、手動弁12を開くこ
とにより所定量の積算された希釈水が濃縮タンク１内に
流入する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a facility for storing and transferring radioactive waste liquid according to the present invention will be described with reference to FIG. In FIG. 1, the same portions as those in FIG. 5 are denoted by the same reference numerals, and the description of the overlapping portions will be omitted. This embodiment differs from the conventional example in that a dilution water inflow line 10 is connected to the upper end of the concentration tank 1. Integrated flow meter in dilution water inflow line 10
11 and a manual valve 12 are connected in series. When the manual valve 12 is opened, a predetermined amount of the diluted water flows into the concentration tank 1.
【００１８】また、撹拌ライン３から分岐してサンプリ
ング部13を設け、撹拌ライン３から濃縮廃液をサンプリ
ングして塩濃度を測定する。さらに、第３の自動弁７の
下流側に接続する移送ライン８にはヒータ９を設置しな
い。ヒータ９は濃縮タンク１と撹拌ライン３にのみ設置
する。A sampling section 13 is provided branching from the stirring line 3, and the concentrated waste liquid is sampled from the stirring line 3 to measure the salt concentration. Further, the heater 9 is not installed on the transfer line 8 connected to the downstream side of the third automatic valve 7. The heater 9 is installed only in the concentration tank 1 and the stirring line 3.
【００１９】ここで、濃縮廃液を濃縮タンク１内に貯蔵
し、濃縮廃液の移送前に第２の自動弁６と第１の自動弁
４を開とし、第３の自動弁を閉とし、循環ポンプ５を運
転する。そして、撹拌ライン３に濃縮廃液を流し、濃縮
タンク１内で撹拌ノズル２から噴射し、撹拌する。撹拌
しながらサンプリング部13から濃縮廃液を採取して濃縮
廃液の濃度を確認し、移送時の濃縮廃液の濃度から、濃
縮廃液の希釈水の量を決定する。Here, the concentrated waste liquid is stored in the concentration tank 1, and before the transfer of the concentrated waste liquid, the second automatic valve 6 and the first automatic valve 4 are opened, the third automatic valve is closed, and the circulation is performed. The pump 5 is operated. Then, the concentrated waste liquid flows into the stirring line 3, and is jetted from the stirring nozzle 2 in the concentration tank 1 and stirred. The concentrated waste liquid is sampled from the sampling unit 13 with stirring to check the concentration of the concentrated waste liquid, and the amount of dilution water of the concentrated waste liquid is determined from the concentration of the concentrated waste liquid at the time of transfer.
【００２０】手動弁12を開き、希釈水を希釈水流入ライ
ン10から手動弁12を通して開度を調整しながら流し、積
算流量計11で所定量を濃縮タンク１に投入する。希釈水
を投入後、濃縮廃液の撹拌を実施しながら第３の自動弁
７を開き、移送ライン８から所定の濃度に希釈した濃縮
廃液を移送する。The manual valve 12 is opened, the dilution water flows from the dilution water inflow line 10 through the manual valve 12 while adjusting the opening, and a predetermined amount is charged into the concentration tank 1 by the integrating flow meter 11. After charging the dilution water, the third automatic valve 7 is opened while stirring the concentrated waste liquid, and the concentrated waste liquid diluted to a predetermined concentration is transferred from the transfer line 8.
【００２１】しかして、本実施の形態によれば、移送ラ
イン８にヒータを設置しない濃縮廃液希釈システムとす
ることができる。これに伴い、移送ライン８が長い設備
の場合、濃縮タンク１の増設による配置スペースを追加
することなく、ヒータ設備の削減および運転コストを低
減することができる。また、サンプリング部13により濃
縮廃液の塩濃度を確認後、希釈水を注入した後、濃縮廃
液を所定濃度に調整して移送することができる。Thus, according to the present embodiment, a concentrated waste liquid dilution system in which a heater is not installed in the transfer line 8 can be provided. Accordingly, in the case where the transfer line 8 is a long facility, it is possible to reduce the number of heater facilities and reduce the operation cost without adding an arrangement space by increasing the concentration tank 1. In addition, after confirming the salt concentration of the concentrated waste liquid by the sampling unit 13, after injecting dilution water, the concentrated waste liquid can be adjusted to a predetermined concentration and transferred.
【００２２】つぎに図２により本発明の第２の実施の形
態を説明する。本実施の形態が第１の実施の形態と異な
る点は移送ライン８に希釈水流入ライン10を接続すると
ともに移送ライン８に接続した第３の自動弁７と希釈水
流入ライン10との間に廃液流量計14，廃液流量調整弁15
を設け、希釈水流入ライン10の下流側にラインミキサ16
を設けたことにある。Next, a second embodiment of the present invention will be described with reference to FIG. This embodiment is different from the first embodiment in that a dilution water inflow line 10 is connected to the transfer line 8 and a third automatic valve 7 connected to the transfer line 8 is connected to the dilution water inflow line 10. Waste liquid flow meter 14, Waste liquid flow control valve 15
And a line mixer 16 downstream of the dilution water inflow line 10.
Has been established.
【００２３】図２において、濃縮廃液はタンク１に貯蔵
し、濃縮廃液の移送前に第１の自動弁４と第２の自動弁
６を開とし、第３の自動弁７および第４の自動弁19を閉
とし、ポンプ５を運転する。そして、撹拌ライン３に濃
縮廃液を流し、濃縮タンク１内で撹拌ノズル２から噴射
し、撹拌する。In FIG. 2, the concentrated waste liquid is stored in a tank 1, and before the concentrated waste liquid is transferred, the first automatic valve 4 and the second automatic valve 6 are opened, and the third automatic valve 7 and the fourth automatic valve 7 are opened. The valve 19 is closed and the pump 5 is operated. Then, the concentrated waste liquid flows into the stirring line 3, and is jetted from the stirring nozzle 2 in the concentration tank 1 and stirred.
【００２４】撹拌しながら、サンプリング部13からサン
プリングし、濃縮廃液の濃度を確認し、移送時の濃縮廃
液の濃度から、濃縮廃液の希釈割合を決定し、制御盤21
に設定する。While stirring, sampling is performed from the sampling unit 13 to check the concentration of the concentrated waste liquid, and the dilution ratio of the concentrated waste liquid is determined from the concentration of the concentrated waste liquid at the time of transfer.
Set to.
【００２５】希釈水の希釈割合設定後、濃縮廃液の撹拌
を実施しながら、第３の自動弁７と第４の自動弁19を開
し、希釈水流入ライン10から希釈水を投入し、濃縮廃液
を希釈しながらラインミキサ16で混合し、移送ライン８
から所定の濃度に希釈した濃縮廃液を移送する。After setting the dilution ratio of the dilution water, the third automatic valve 7 and the fourth automatic valve 19 are opened while stirring the concentrated waste liquid, and the dilution water is introduced from the dilution water inflow line 10 to concentrate the dilution water. The waste liquid is mixed with the line mixer 16 while diluting it and the transfer line 8
And the concentrated waste liquid diluted to a predetermined concentration is transferred.
【００２６】このとき、濃縮廃液は廃液流量計14で、希
釈水は希釈水流量計17で流量を計測し、制御盤21へ信号
を送る。そして、制御盤21に設定した希釈割合にしたが
って、濃縮廃液は廃液流量調整弁15で、希釈水は希釈水
流量調整弁18で流量を調整する。At this time, the flow rate of the concentrated waste liquid is measured by the waste liquid flow meter 14, and the flow rate of the dilution water is measured by the dilution water flow meter 17, and a signal is sent to the control panel 21. Then, in accordance with the dilution ratio set in the control panel 21, the flow rate of the concentrated waste liquid is adjusted by the waste liquid flow rate adjustment valve 15, and the flow rate of the dilution water is adjusted by the dilution water flow rate adjustment valve 18.
【００２７】本実施の形態によれば第１の実施の形態の
作用効果のほかに、サンプリングにより濃縮廃液の塩濃
度を確認後、希釈水を注入しラインミキサで混合して濃
縮廃液を所定の濃度にして移送ラインから移送できる。
また、濃縮廃液の塩濃度を低下させることができるの
で、塩析出による閉塞を防止することができる。According to the present embodiment, in addition to the operation and effect of the first embodiment, after confirming the salt concentration of the concentrated waste liquid by sampling, diluting water is injected and mixed by a line mixer to reduce the concentrated waste liquid to a predetermined concentration. The concentration can be transferred from the transfer line.
Further, since the salt concentration of the concentrated waste liquid can be reduced, clogging due to salt precipitation can be prevented.
【００２８】つぎに図３により本発明の第３の実施の形
態を説明する。本実施の形態は第２の実施の形態におい
て、サンプリング部13の代りに濃度計22を撹拌ラインに
設け、この濃度計22の濃度信号を廃液流量計14および廃
液流量調整弁15に送信するように電気的に接続したこと
にある。Next, a third embodiment of the present invention will be described with reference to FIG. This embodiment is different from the second embodiment in that a concentration meter 22 is provided in the stirring line instead of the sampling unit 13 and the concentration signal of the concentration meter 22 is transmitted to the waste liquid flow meter 14 and the waste liquid flow regulating valve 15. That it is electrically connected to
【００２９】図３において、濃縮廃液はタンク１に貯蔵
し、濃縮廃液の移送前に第１の自動弁４と第２の自動弁
６を開とし、第３の自動弁７および第４の自動弁19を閉
とし、ポンプ５を運転する。そして、撹拌ライン３に濃
縮廃液を流し、濃縮タンク１内で撹拌ノズル２から噴射
し、撹拌する。In FIG. 3, the concentrated waste liquid is stored in the tank 1, and before the concentrated waste liquid is transferred, the first automatic valve 4 and the second automatic valve 6 are opened, and the third automatic valve 7 and the fourth automatic valve 7 are opened. The valve 19 is closed and the pump 5 is operated. Then, the concentrated waste liquid flows into the stirring line 3, and is jetted from the stirring nozzle 2 in the concentration tank 1 and stirred.
【００３０】制御盤21により希釈水の希釈割合を設定
し、濃縮廃液の撹拌を実施しながら、第３の自動弁７と
第４の自動弁19を開とし、希釈水流入ライン10から希釈
水を投入し、濃縮廃液を希釈しながらラインミキサ16で
混合し、希釈水移送ライン10から所定の濃度に希釈した
濃縮廃液を移送する。The third automatic valve 7 and the fourth automatic valve 19 are opened while stirring the concentrated waste liquid by setting the dilution ratio of the dilution water by the control panel 21, and the dilution water is supplied from the dilution water inflow line 10. The concentrated waste liquid is mixed by the line mixer 16 while diluting the concentrated waste liquid, and the concentrated waste liquid diluted to a predetermined concentration is transferred from the dilution water transfer line 10.
【００３１】このとき、濃縮廃液の濃度を撹拌ライン３
に設置した濃度形22により計測し制御盤21へ信号を送
り、また、濃縮廃液の流量は廃液流量計14により制御盤
21に設定した希釈水の割合となるように、濃縮廃液は廃
液流量調整弁15により、希釈水は希釈水流量調整弁18で
流量を調整するよう制御盤21により制御する。At this time, the concentration of the concentrated waste liquid is adjusted by the stirring line 3
Measured by the concentration type 22 installed in the control panel and sends a signal to the control panel 21.The flow rate of the concentrated waste liquid is controlled by the waste liquid flow meter 14
The control panel 21 controls the flow rate of the concentrated waste liquid by the waste liquid flow rate adjustment valve 15 and the flow rate of the dilution water by the dilution water flow rate adjustment valve 18 so that the dilution water ratio is set to 21.
【００３２】本実施の形態は第２の実施の形態に準じて
おり、濃度計により濃縮廃液の塩濃度を確認後、濃縮廃
液に対する希釈割合を制御盤で設定し、自動で濃縮廃液
を所定の濃度に調整し、移送することができる。その他
の作用効果は第２の実施の形態と同様なので、その説明
は省略する。This embodiment is similar to the second embodiment. After confirming the salt concentration of the concentrated waste liquid with a densitometer, the dilution ratio with respect to the concentrated waste liquid is set by a control panel, and the concentrated waste liquid is automatically discharged to a predetermined concentration. The concentration can be adjusted and transported. Other functions and effects are the same as those of the second embodiment, and a description thereof will be omitted.
【００３３】つぎに図４により本発明の第４の実施の形
態を説明する。本実施の形態は第３の実施の形態におい
て、濃度計22を移送ライン８のラインミキサ16の下流側
に接続したことにある。その他の部分は第３の実施の形
態と同様であるので、その説明は省略する。Next, a fourth embodiment of the present invention will be described with reference to FIG. This embodiment is different from the third embodiment in that the densitometer 22 is connected to the transfer line 8 on the downstream side of the line mixer 16. Other parts are the same as those of the third embodiment, and the description thereof is omitted.
【００３４】図４において、濃縮廃液は濃縮タンク１に
貯蔵し、濃縮廃液の移送前に第１の自動弁４，第２の自
動弁６を開とし、第３の自動弁７および第４の自動弁を
閉とし、ポンプ５を運転する。そして、撹拌ライン３に
濃縮廃液を流し、濃縮タンク１内で撹拌ノズル２から噴
射し、撹拌する。In FIG. 4, the concentrated waste liquid is stored in the concentration tank 1, the first automatic valve 4 and the second automatic valve 6 are opened before the concentrated waste liquid is transferred, and the third automatic valve 7 and the fourth automatic valve 7 are opened. The automatic valve is closed, and the pump 5 is operated. Then, the concentrated waste liquid flows into the stirring line 3, and is jetted from the stirring nozzle 2 in the concentration tank 1 and stirred.
【００３５】制御盤20により希釈水の希釈割合を設定
し、濃縮廃液の撹拌を実施しながら、第３の自動弁７と
第４の自動弁19を開とし、希釈水ライン10から希釈水を
投入し、濃縮廃液を希釈しながらラインミキサ16で混合
し、移送ライン８から所定の濃度に希釈した濃度廃液を
移送する。The dilution ratio of the dilution water is set by the control panel 20, and the third automatic valve 7 and the fourth automatic valve 19 are opened while stirring the concentrated waste liquid. Then, the concentrated waste liquid is mixed with the line mixer 16 while diluting the concentrated waste liquid, and the concentration waste liquid diluted to a predetermined concentration is transferred from the transfer line 8.
【００３６】この場合、濃縮廃液の濃度を移送ライン８
に設置した濃度計22により計測し、制御盤21へ信号を送
り、また、濃縮廃液の流量は廃液流量計14で、希釈水は
希釈水流量計17で計測し、制御盤21へ信号を送信する。
そして、制御盤21に設定した希釈水の割合となるよう
に、濃縮廃液は廃液流量調整弁15で、希釈水は希釈水流
量調整弁18で流量を調整するよう制御盤21により制御す
る。In this case, the concentration of the concentrated waste liquid is transferred to the transfer line 8.
The concentration is measured by the concentration meter 22 installed in the system, and a signal is sent to the control panel 21.The flow rate of the concentrated waste liquid is measured by the waste liquid flow meter 14, and the dilution water is measured by the dilution water flow meter 17, and the signal is transmitted to the control panel 21. I do.
The concentrated waste liquid is controlled by the waste liquid flow control valve 15 and the diluted water is controlled by the dilute water flow control valve 18 by the control panel 21 so as to adjust the flow rate to the dilution water set in the control panel 21.
【００３７】本実施の形態による作用効果は、濃縮移送
時の塩濃度を制御盤で設定しておき、濃度計により塩濃
度を自動計測し、制御盤内で所定の濃度廃液の塩濃度と
なるように制御し、移送することができる。その他は第
２および第３の実施の形態の作用効果に準じているの
で、その説明は省略する。The operation and effect of the present embodiment are as follows. The salt concentration at the time of concentration transfer is set on the control panel, the salt concentration is automatically measured by the concentration meter, and the salt concentration of the predetermined concentration waste liquid is obtained in the control panel. Can be controlled and transported. Others are in accordance with the operation and effect of the second and third embodiments, and the description thereof is omitted.
【００３８】[0038]
【発明の効果】本発明によれば、移送ラインにヒータを
設ける必要のない濃縮廃液希釈移送システムとすること
ができ、とくに移送ラインが長い設備の場合には濃縮タ
ンクの増設による配置スペースの追加の必要がなく、ヒ
ータ設備の削減および運転コストの低減を図ることがで
きる。According to the present invention, it is possible to provide a concentrated waste liquid dilution transfer system which does not require a heater in the transfer line. In particular, in the case of equipment having a long transfer line, an additional space is required by increasing the concentration tank. Therefore, it is possible to reduce the number of heater facilities and the operating cost.
【図１】本発明に係る放射性廃液の貯蔵，移送設備の第
１の実施の形態を示す機器配管系統図。FIG. 1 is an equipment piping system diagram showing a first embodiment of a storage and transfer facility for radioactive waste liquid according to the present invention.
【図２】本発明に係る放射性廃液の貯蔵，移送設備の第
２の実施の形態を示す機器配管系統図。FIG. 2 is an equipment piping system diagram showing a second embodiment of a storage and transfer facility for radioactive waste liquid according to the present invention.
【図３】本発明に係る放射性廃液の貯蔵，移送設備の第
３の実施の形態を示す機器配管系統図。FIG. 3 is an equipment piping system diagram showing a third embodiment of the storage and transfer facility for radioactive waste liquid according to the present invention.
【図４】本発明に係る放射性廃液の貯蔵，移送設備の第
４の実施の形態を示す機器配管系統図。FIG. 4 is an equipment piping system diagram showing a fourth embodiment of the radioactive waste liquid storage and transfer facility according to the present invention.
【図５】従来の放射性廃液の貯蔵，移送設備を示す機器
配管系統図。FIG. 5 is an equipment piping diagram showing a conventional radioactive waste liquid storage and transfer facility.
１…濃縮タンク、２…撹拌ノズル、３…撹拌ライン、４
…第１の自動弁、５…循環ポンプ、６…第２の自動弁、
７…第３の自動弁、８…移送ライン、９…ヒータ、10…
希釈水流入ライン、11…積算流量計、12…手動弁、13サ
ンプリング部、14…廃液流量計、15…廃液流量調整弁、
16…ラインミキサ、17…希釈水流量計、18…希釈水流量
調整弁、19…第４の自動弁、20…逆止弁、21…制御盤、
22…濃度計。DESCRIPTION OF SYMBOLS 1 ... Concentration tank, 2 ... Stirring nozzle, 3 ... Stirring line, 4
... first automatic valve, 5 ... circulation pump, 6 ... second automatic valve,
7 ... third automatic valve, 8 ... transfer line, 9 ... heater, 10 ...
Dilution water inflow line, 11: integrating flow meter, 12: manual valve, 13 sampling section, 14: waste liquid flow meter, 15: waste liquid flow adjusting valve
16 ... line mixer, 17 ... dilution water flow meter, 18 ... dilution water flow control valve, 19 ... fourth automatic valve, 20 ... check valve, 21 ... control panel,
22 ... Densitometer.
Claims (4)
に、希釈水流入ラインを接続し、かつこの希釈水流入ラ
インから流入する希釈水と前記放射性濃縮廃液の混合液
を前記濃縮タンクから流出して前記濃縮タンクへ戻す第
１の自動弁，循環ポンプ及び第２の自動弁を有する循環
配管系の撹拌ラインを設け、この撹拌ラインから二枝分
岐してそれぞれの分岐管にサンプリング部と第３の自動
弁を接続し、この第３の自動弁の下流側に移送ラインを
接続し、この移送ラインを除く前記濃縮タンクと前記撹
拌ラインにヒータを設けてなることを特徴とする放射性
廃液の貯蔵，移送設備。1. A dilution water inflow line is connected to a concentration tank for storing radioactive concentrated waste liquid, and a mixture of dilution water and the radioactive concentrated waste liquid flowing from the diluted water inflow line flows out of the concentration tank. A stirring line of a circulation piping system having a first automatic valve, a circulation pump, and a second automatic valve for returning to the concentration tank is provided. The stirring line is branched into two branches, and a sampling section and a third branch are provided in each branch pipe. An automatic valve is connected, a transfer line is connected downstream of the third automatic valve, and a heater is provided in the concentration tank and the stirring line except for the transfer line. Transfer equipment.
動弁，循環ポンプおよび第２の自動弁を有する循環配管
系の撹拌ラインを設け、この撹拌ラインから二枝分岐し
てそれぞれの分岐管にサンプリング部と第３の自動弁を
接続し、この第３の自動弁の下流側に廃液流量計，廃液
流量調整弁，希釈水注入ラインおよびラインミキサを順
次直列接続した移送ラインを設け、前記廃液流量計と前
記廃液流量調整弁および前記希釈水ラインに設けた希釈
水流量計と希釈水流量調整弁が電気的に接続する制御盤
を設けてなることを特徴とする放射性廃液の貯蔵，移送
設備。2. A stirring line of a circulation piping system having a first automatic valve, a circulation pump and a second automatic valve is provided in a concentration tank of a radioactive concentrated waste liquid, and the stirring line is branched into two branches. A sampling line and a third automatic valve are connected to the second automatic valve, and a transfer line in which a waste liquid flow meter, a waste liquid flow control valve, a dilution water injection line, and a line mixer are sequentially connected in series is provided downstream of the third automatic valve. A storage and transfer of radioactive waste liquid, comprising: a waste liquid flow meter, the waste liquid flow control valve, and a control panel electrically connected to the dilution water flow meter and the dilution water flow control valve provided in the dilution water line. Facility.
け、この濃度計を前記流量調整弁と電気的に接続してな
ることを特徴とする請求項２記載の放射性廃液の貯蔵，
移送設備。3. The storage of radioactive waste liquid according to claim 2, wherein a densitometer is provided in place of the sampling unit, and the densitometer is electrically connected to the flow control valve.
Transfer equipment.
け、この濃度計を前記流量調整弁と電気的に接続してな
ることを特徴とする請求項２記載の放射性廃液の貯蔵，
移送設備。4. The storage of a radioactive waste liquid according to claim 2, wherein a concentration meter is provided downstream of the line mixer, and the concentration meter is electrically connected to the flow control valve.
Transfer equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10184363A JP2000019294A (en) | 1998-06-30 | 1998-06-30 | Facility for storing and transporting radioactive waste liquor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10184363A JP2000019294A (en) | 1998-06-30 | 1998-06-30 | Facility for storing and transporting radioactive waste liquor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000019294A true JP2000019294A (en) | 2000-01-21 |
Family
ID=16151933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10184363A Pending JP2000019294A (en) | 1998-06-30 | 1998-06-30 | Facility for storing and transporting radioactive waste liquor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000019294A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013195191A (en) * | 2012-03-19 | 2013-09-30 | Toshiba Corp | Fissile material housing tank and fissile material housing method |
| KR20220140194A (en) * | 2021-04-09 | 2022-10-18 | 주식회사 새빛이엔이 | A disposal system of liquid waste generated in separate buildings of nuclear power plants |
-
1998
- 1998-06-30 JP JP10184363A patent/JP2000019294A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013195191A (en) * | 2012-03-19 | 2013-09-30 | Toshiba Corp | Fissile material housing tank and fissile material housing method |
| KR20220140194A (en) * | 2021-04-09 | 2022-10-18 | 주식회사 새빛이엔이 | A disposal system of liquid waste generated in separate buildings of nuclear power plants |
| KR102493666B1 (en) * | 2021-04-09 | 2023-01-31 | 주식회사 새빛이엔이 | A disposal system of liquid waste generated in separate buildings of nuclear power plants |
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