JPS61170699A - Method of automatically controlling condenser bump - Google Patents
Method of automatically controlling condenser bumpInfo
- Publication number
- JPS61170699A JPS61170699A JP1091685A JP1091685A JPS61170699A JP S61170699 A JPS61170699 A JP S61170699A JP 1091685 A JP1091685 A JP 1091685A JP 1091685 A JP1091685 A JP 1091685A JP S61170699 A JPS61170699 A JP S61170699A
- Authority
- JP
- Japan
- Prior art keywords
- concentrator
- waste liquid
- amount
- liquid
- 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
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (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、放射性廃棄物処理設備における濃縮器側斜方
法に係り、特に、運転員の省力化及び被曝低減に好適な
濃縮器バンプ自動制御方法に関する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a concentrator side tilting method in a radioactive waste processing facility, and in particular, to an automatic concentrator bump control method suitable for saving labor and reducing radiation exposure of operators. Regarding.
原子力発電所で発生する廃液は、液体廃棄物処理設備圧
おいて、廃液の性状により、機器ドレン系、床ドレン系
、化学廃液系の３種に分類・収集される。Waste liquid generated at nuclear power plants is classified and collected in three types according to the properties of the waste liquid: equipment drain type, floor drain type, and chemical waste liquid type.
機器ドレンの廃液性状は比較的電導度が低く、高純度廃
液であるが、復水として再使用するためる過・脱塩処理
を行なっている。Although the waste liquid from the equipment drain has relatively low conductivity and is a high-purity waste liquid, it is subjected to filtration and desalination treatment to be reused as condensate.
床ドレンの廃液性状は比較的亀導度が高く、低純度廃液
であシ、濃縮・脱塩処理をして廃棄物の減容化を行なっ
ている。The waste liquid from the floor drain has a relatively high conductivity, and the waste liquid is of low purity and is concentrated and desalted to reduce the volume of the waste.
化学廃液の廃液性状は、電導度が高く、樹脂再生時に使
用する硫酸及び水酸化ナトリウム等が流入して化学的不
純物が多量に含まれるため、ｐＨが大きく変動する。こ
のため、腐食防止対策として、硫酸または水酸化ナトリ
ウムで中和処理を行ない、ｐＨを８〜１０（弱アルカリ
性）Ｋ調整して濃縮・脱塩処理により、床ドレン系と同
様に廃棄物の減容化を行なっている。The chemical waste liquid has high conductivity and contains a large amount of chemical impurities due to the inflow of sulfuric acid, sodium hydroxide, etc. used during resin regeneration, so the pH fluctuates greatly. Therefore, as a corrosion prevention measure, we perform neutralization treatment with sulfuric acid or sodium hydroxide, adjust the pH to 8 to 10 K (weakly alkaline), and perform concentration and desalination treatment to reduce waste in the same way as with floor drain systems. We are carrying out nurturing.
従来、床ドレン系及び化学廃液系においては濃縮処理を
行ない、濃縮器内廃液の水質管理基準によって濃縮器の
バンプ操作を実施している。濃縮器の運転は、濃縮器内
廃液のｐＨ，比重、塩素イオン濃度、放射能濃度のいず
れかが水質管理基準に達したことを、運転員が適時に濃
縮器内廃液をサンプリング分析することにより確認し、
運転員の判断に基づいて濃縮器のバンプ操作を行なって
いる。そのため、サンプリング分析時の作業員の被曝低
減及び運転員の省力化を図ることが重要な課題となって
いる。Conventionally, in bed drain systems and chemical waste liquid systems, concentration processing has been carried out, and the bump operation of the concentrator has been carried out in accordance with water quality control standards for waste liquid in the concentrator. The concentrator is operated by an operator who samples and analyzes the concentrator waste liquid in a timely manner to determine whether the pH, specific gravity, chloride ion concentration, or radioactivity concentration of the concentrator waste liquid has reached the water quality control standards. Confirmed,
Concentrator bump operations are performed based on operator judgment. Therefore, it is an important issue to reduce the radiation exposure of workers during sampling analysis and to save the labor of operators.
この解決策として、濃縮器へ給液する前に、床ドレン及
び化学廃液を収集する廃液タンクにて、濃縮器内廃液の
水質管理基準であるｐＨ，比重。As a solution to this problem, before supplying liquid to the concentrator, the pH and specific gravity of the waste liquid in the concentrator, which are water quality control standards, are determined in the waste liquid tank that collects the bed drain and chemical waste liquid.
塩素イオン濃度、放射能濃度を自動分析し、濃縮器への
給液量を規定することにより、濃縮器のバンプ時期を自
動的に決定する濃縮器バンプ自動制御を行なう。Concentrator bump automatic control is performed to automatically determine the concentrator bump timing by automatically analyzing the chloride ion concentration and radioactivity concentration and regulating the amount of liquid supplied to the concentrator.
尚、この種の制御方法に関連するものに、特開昭５４−
７４９９９号がある。その内容は、濃縮器内廃液の濃縮
度により、濃縮器濃縮完了出力信号を運転指令部に出力
して、濃縮器処理運転を停止させる制御システムであり
、濃縮器バンプ操作の準備作業を予め予測するものであ
る。ここでの濃縮度とは、濃縮廃液の密度、＊縮器出入
口部間の濁度差と濃縮器通過流量との積を積分した値で
ある濁度積算量、＃縮器出入口部間の電導度差と濃縮器
通過流量との積を積分した値である電導度積算量、濃縮
度流入量と濃縮廃液量の比である体積濃縮率のいずれか
を示す。In addition, related to this type of control method, Japanese Patent Application Laid-Open No. 1986-
There is No. 74999. The content is a control system that outputs a concentrator concentration completion output signal to the operation command unit according to the concentration level of the waste liquid in the concentrator, and stops the concentrator processing operation, and predicts the preparation work for concentrator bump operation in advance. It is something to do. Concentration here refers to the density of the concentrated waste liquid, *the integrated amount of turbidity which is the product of the turbidity difference between the condenser inlet and outlet and the flow rate passing through the condenser, and #the electrical conductivity between the condenser inlet and outlet. It shows either the conductivity integrated amount, which is a value obtained by integrating the product of the temperature difference and the flow rate passing through the concentrator, or the volume concentration ratio, which is the ratio of the concentration inflow amount and the concentrated waste liquid amount.
従来は、濃縮器３より適時に直接サンプリング分析し、
水質管理基準の目安として比重または塩素イオン濃度の
いずれかが基準に達した場合に、手動でバンプを実施し
ている。本発明においては水質管理基準項目ＬｐＨ及び
放射能濃度を追加しておシ、従来濃縮器からサンプリン
グしていたもの全廃液タンク１で自動分析している。特
に、ｐＨについては、濃縮器の腐食防止面から水質管理
する必要性が大であり、濃縮器内の廃液温度が高いため
濃縮器からサンプリングしてｐＨを分析することは困難
となる。Conventionally, sampling and analysis were carried out directly from the concentrator 3 in a timely manner.
As a guideline for water quality management standards, bumping is carried out manually when either specific gravity or chloride ion concentration reaches the standard. In the present invention, water quality control standard items LpH and radioactivity concentration are added, and samples that were conventionally sampled from the concentrator are automatically analyzed in the waste liquid tank 1. In particular, regarding pH, there is a great need to control water quality from the standpoint of preventing corrosion of the concentrator, and since the temperature of the waste liquid in the concentrator is high, it is difficult to sample from the concentrator and analyze the pH.
本発明の目的は、濃縮器のバンプ時期を廃液タンクから
濃縮器への給液量で規定することにより濃縮器のバンプ
時期を決定し制御する方法を提供することＫある。An object of the present invention is to provide a method for determining and controlling the bump timing of a concentrator by defining the bump timing of the concentrator by the amount of liquid supplied from a waste liquid tank to the concentrator.
本発明による濃縮器バンプ自動制御は、廃液性状により
分類・収集されたタンク内廃液の水質（ｐＨ，比重、塩
素イオン濃度、放射能濃度）と濃縮器保有水食及び給液
流量（ｍ３／ｈｉとから、濃縮器内廃液の水質管理基準
を満たす濃縮器への給液量を演算することにより、濃縮
器のバンプ時期を自動的に決定し制御することで、作業
員の被曝低減及び省力化を図るものである。The automatic concentrator bump control according to the present invention is based on the water quality (pH, specific gravity, chloride ion concentration, radioactivity concentration) of the waste liquid in the tank, which is classified and collected according to the properties of the waste liquid, and the concentration of water contained in the concentrator and the flow rate of liquid supplied (m3/hi). Based on this, by calculating the amount of liquid supplied to the concentrator that satisfies the water quality control standards for waste liquid in the concentrator, the bump timing of the concentrator is automatically determined and controlled, reducing worker exposure and saving labor. The aim is to
以下、本発明の一実施例を図により説明する。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
原子力発電設備で発生する床ドレン及び化学廃液は、流
入配管１３を介して廃液タンク１．こ収集される。廃液
タンク１に収集された廃液は、廃液移送ポンプ１２によ
り循環ライン１４ｔ−介して攪拌されｉ）Ｈ検出器８．
比重検出器９．塩素イオン濃度検出器１０．放射能濃度
検出器１１で各々の水質が自動分析される。自動分析に
よシ規定された廃液タンク１内の廃液は、廃液移送ポン
プ１２及び積算流量計２１−介して濃縮器３に給液し、
濃縮器３内の液位を一定にしながら濃縮処理する。Floor drain and chemical waste generated in nuclear power generation facilities are transferred to waste liquid tank 1 through inflow piping 13. This will be collected. The waste liquid collected in the waste liquid tank 1 is agitated by the waste liquid transfer pump 12 through the circulation line 14t.i) H detector 8.
Specific gravity detector9. Chlorine ion concentration detector 10. The radioactive concentration detector 11 automatically analyzes the quality of each water. The waste liquid in the waste liquid tank 1 determined by the automatic analysis is supplied to the concentrator 3 via the waste liquid transfer pump 12 and the integrated flow meter 21.
Concentration processing is performed while keeping the liquid level in the concentrator 3 constant.
濃縮器３で発生する蒸発蒸気は、凝縮されて配管１５を
介し、処理水タンク４に回収される。また、濃縮器３で
濃縮処理された廃液は、配管１６を介し、濃縮廃液貯蔵
タンク５にて一定期間貯蔵減衰する。The evaporated vapor generated in the concentrator 3 is condensed and collected into the treated water tank 4 via the pipe 15. Further, the waste liquid concentrated in the concentrator 3 is stored and attenuated for a certain period of time in the concentrated waste liquid storage tank 5 via the pipe 16.
本発明の自動制御は、廃液タンク１内の水質を分析する
、ｐＨ検出器８．比重検出器９．塩素イオン濃度検出器
１０．放射能濃度検出器１１の各々の検出信号と、廃液
移送ポンプ１２の移送流量、濃縮器３の保有水量（バン
プする濃縮廃液量）及び濃縮器３内廃液の水質管理基準
値とから、演算装置７により、各水質項目（ｐＨ，比重
、塩素イオン濃度、゛放射能濃度）ごとに濃縮器３への
給液量を演算し、かつ給液量が最小となる信号を積算流
量計２に出力する。出力された信号は、積算流量計２に
より廃液移送ポンプ１２及び濃縮器３に停止信号を与え
、廃液タンク１から濃縮器３への給液を停止するととも
に、濃縮器３の濃縮処理運転も１苧止して、かつ濃縮器
３の濃縮廃液全濃縮廃液貯蔵タンク５へ自動的にバンプ
する。ただし、演算装置７で出力された給液量が、タン
ク液位検出器６によって検出される廃液タンク１の最大
廃液量よりも大きい場合は、廃液タンク１の最大廃液量
の出力信号が、演算装置７から積算流量計２に与えられ
、前述と同様の制御をする。The automatic control of the present invention includes a pH detector 8. which analyzes the water quality in the waste liquid tank 1. Specific gravity detector9. Chlorine ion concentration detector 10. Based on each detection signal of the radioactivity concentration detector 11, the transfer flow rate of the waste liquid transfer pump 12, the amount of water held in the concentrator 3 (the amount of concentrated waste liquid to be bumped), and the water quality control standard value of the waste liquid in the concentrator 3, a calculation device 7, calculate the amount of liquid supplied to the concentrator 3 for each water quality item (pH, specific gravity, chloride ion concentration, radioactivity concentration), and output a signal that minimizes the amount of liquid supplied to the integrated flow meter 2. do. The output signal gives a stop signal to the waste liquid transfer pump 12 and the concentrator 3 by the integrated flow meter 2, and the liquid supply from the waste liquid tank 1 to the concentrator 3 is stopped, and the concentration processing operation of the concentrator 3 is also stopped. The entire concentrated waste liquid of the concentrator 3 is automatically bumped into the concentrated waste liquid storage tank 5. However, if the amount of liquid supplied by the calculation device 7 is larger than the maximum amount of waste liquid in the waste liquid tank 1 detected by the tank liquid level detector 6, the output signal of the maximum amount of waste liquid in the waste liquid tank 1 will be It is given to the integrating flowmeter 2 from the device 7, and is controlled in the same manner as described above.
本発明によれば、濃縮器のバンブ操作及びサンプリング
分析が自動的に制御されるので、作業員の被曝低減、省
力化及びサンプリング分析時間の短縮化の効果がある。According to the present invention, since the bump operation of the concentrator and the sampling analysis are automatically controlled, there are effects of reducing radiation exposure of workers, saving labor, and shortening the sampling analysis time.
図は、本発明の一実施例を示す放射性廃棄物処理設備に
おける濃縮器廻りのフローダイヤグラムでおる。
ｌ・・・廃液タンク、２・・・積算流量計、３・・・濃
縮器、４・・・処理水タンク、６用タンク液位検出器、
７・・・演算装置、８・・・ｐＨ検出器、９・・・比重
検出器、１１・・・放射能濃度検出器、１２・・・廃液
移送ポンプ。The figure is a flow diagram around a concentrator in a radioactive waste treatment facility showing one embodiment of the present invention. 1... Waste liquid tank, 2... Integral flow meter, 3... Concentrator, 4... Treated water tank, Tank level detector for 6,
7... Arithmetic device, 8... pH detector, 9... Specific gravity detector, 11... Radioactivity concentration detector, 12... Waste liquid transfer pump.
Claims (1)
ポンプと、濃縮器への給液量を規定する流量計と、この
廃液を濃縮処理する濃縮器と、濃縮器で濃縮処理された
濃縮廃液を貯蔵する貯蔵タンクを有する放射性廃棄物処
理設備において、濃縮器バンプの判断基準となるｐＨ、
比重、塩素イオン濃度及び放射能濃度を検出する測定器
、及び廃液タンクの液位検出器とにより、廃液タンクか
ら濃縮器への給液量を決定する演算装置を有し、濃縮器
のバンプ時期を廃液タンクから濃縮器への給液量で規定
することを特徴とする濃縮器バンプ自動制御方法。1. A waste liquid tank that collects waste liquid, a pump that transfers this waste liquid, a flow meter that regulates the amount of liquid supplied to the concentrator, a concentrator that concentrates this waste liquid, and a concentrator that has been concentrated by the concentrator. In radioactive waste treatment facilities that have storage tanks for storing waste liquid, pH, which is the criterion for determining concentrator bumps,
It has a calculation device that determines the amount of liquid to be supplied from the waste liquid tank to the concentrator using a measuring device that detects specific gravity, chlorine ion concentration, and radioactivity concentration, and a liquid level detector of the waste liquid tank, and determines when the concentrator bumps. An automatic concentrator bump control method, characterized in that: is defined by the amount of liquid supplied from a waste liquid tank to a concentrator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1091685A JPS61170699A (en) | 1985-01-25 | 1985-01-25 | Method of automatically controlling condenser bump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1091685A JPS61170699A (en) | 1985-01-25 | 1985-01-25 | Method of automatically controlling condenser bump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61170699A true JPS61170699A (en) | 1986-08-01 |
Family
ID=11763578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1091685A Pending JPS61170699A (en) | 1985-01-25 | 1985-01-25 | Method of automatically controlling condenser bump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61170699A (en) |
-
1985
- 1985-01-25 JP JP1091685A patent/JPS61170699A/en active Pending
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