JP2001133428A - Method for evaluating noble metal chemical injection effect and apparatus therefor - Google Patents
Method for evaluating noble metal chemical injection effect and apparatus thereforInfo
- Publication number
- JP2001133428A JP2001133428A JP31804199A JP31804199A JP2001133428A JP 2001133428 A JP2001133428 A JP 2001133428A JP 31804199 A JP31804199 A JP 31804199A JP 31804199 A JP31804199 A JP 31804199A JP 2001133428 A JP2001133428 A JP 2001133428A
- Authority
- JP
- Japan
- Prior art keywords
- noble metal
- water
- measuring
- measurement
- chemical injection
- 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
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は例えば原子炉内にお
ける貴金属付着密度を迅速かつ簡便に評価することがで
きる貴金属化学注入効果の評価方法及びその評価装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for evaluating a chemical injection effect of a noble metal, which can quickly and easily evaluate a noble metal adhesion density in a nuclear reactor, for example.
【０００２】[0002]
【従来の技術】原子力プラントにおける粒界応力腐食割
れの抑制を目的として炉水への水素注入が実施されてい
る。しかし、炉水への水素注入はタービン系での放射線
線量率を増大させるため、プラントによっては水素注入
量の上限が大きく制約される場合がある。2. Description of the Related Art Hydrogen is injected into reactor water for the purpose of suppressing intergranular stress corrosion cracking in a nuclear power plant. However, since hydrogen injection into reactor water increases the radiation dose rate in the turbine system, the upper limit of the hydrogen injection amount may be significantly restricted depending on the plant.
【０００３】貴金属コーティング、貴金属クラッディン
グなどの貴金属技術は貴金属の触媒作用を利用して水素
注入による腐食電位卑化効果を増大し、少量の水素注入
量で応力腐食割れを効率よく抑制することを目的とする
ものである。Noble metal technologies such as noble metal coating and noble metal cladding use the catalytic action of noble metal to increase the corrosion potential lowering effect by hydrogen injection and to efficiently suppress stress corrosion cracking with a small amount of hydrogen injection. It is the purpose.
【０００４】中でも炉水に貴金属化合物を注入して材料
表面に貴金属を析出させる貴金属化学注入技術は他の工
法と異なり大規模な工事を必要としないために実機への
適用性が最も優れていると考えられる方法である。しか
し、貴金属化学注入は炉水に貴金属化合物を混入しその
化学反応により貴金属を材料表面に付着させる方法であ
るため、付着密度を直接コントロールすることは困難で
ある。[0004] Above all, the noble metal chemical injection technique of injecting a noble metal compound into reactor water to precipitate a noble metal on the material surface does not require a large-scale construction unlike other construction methods, and is therefore most applicable to an actual machine. It is a method considered to be. However, noble metal chemical injection is a method in which a noble metal compound is mixed into reactor water and the noble metal is attached to the material surface by a chemical reaction thereof. Therefore, it is difficult to directly control the attachment density.
【０００５】また、貴金属は材料表面に付着する形で存
在するため、プラントの運転に伴い付着した貴金属が減
少することも予測される。貴金属化学注入効果は付着し
た貴金属密度の影響を受けるため、貴金属の付着密度を
簡便に評価する方法を開発することは実機適用に向けて
重要な課題である。[0005] Further, since the noble metal is present in the form of adhering to the surface of the material, it is expected that the noble metal adhering to the plant will decrease with the operation of the plant. Since the noble metal chemical injection effect is affected by the density of the noble metal deposited, developing a method for simply evaluating the density of the noble metal deposited is an important issue for practical application.
【０００６】現在、実プラントに対して提案されている
評価方法には分析用試験片を原子炉内に挿入し貴金属化
学注入処理を施した後、試験片を取り出して分析により
貴金属付着密度を測定する方法と、実機構造物の表面か
ら掻き取った酸化物を分析して貴金属の付着密度を測定
する方法がある。At present, an evaluation method proposed for an actual plant involves inserting a test piece for analysis into a nuclear reactor, performing a chemical injection treatment of a noble metal, removing the test piece, and measuring the adhesion density of the noble metal by analysis. And a method of analyzing the oxide scraped from the surface of the actual structure to measure the adhesion density of the noble metal.
【０００７】[0007]
【発明が解決しようとする課題】貴金属化学注入技術に
おいて試験片又は掻き取った酸化物を分析する方法は原
子炉からサンプルを取り出し分析する必要があるため、
測定結果が得られるまで時間と手間が必要となる。その
ため、検査の結果を貴金属化学注入処理に反映するため
には分析結果が得られるまで必要に応じて再施工ができ
る状態を保持しておく必要があると考えられる。The method of analyzing a specimen or scraped oxide in the precious metal chemical injection technique requires removing a sample from the reactor and analyzing it.
It takes time and effort until a measurement result is obtained. Therefore, in order to reflect the result of the inspection in the noble metal chemical injection treatment, it is considered necessary to maintain a state in which re-construction can be performed as necessary until an analysis result is obtained.
【０００８】また、測定結果が得られた場合には別の作
業が実施されているか、既にプラントが再起動している
など、測定結果を反映できない可能性も考えられる。さ
らに、試験片のサンプリングによる評価方法については
試験片がある位置の貴金属付着量しか評価できないた
め、原子炉内全体の代表性については疑問の残る部分も
あり、任意の箇所の貴金属処理効果を迅速に評価する方
法及びその装置の開発が要望される。Further, when the measurement result is obtained, there is a possibility that the measurement result cannot be reflected, for example, another operation is being performed, or the plant has already been restarted. Furthermore, since the evaluation method based on sampling of the test piece can evaluate only the amount of noble metal deposited at the location where the test piece is located, there is still a question about the representativeness of the entire reactor interior. It is desired to develop a method and an apparatus for the evaluation.
【０００９】比較的簡便な応力腐食割れ抑制効果の評価
方法としては腐食電位測定が挙げられる。しかし、腐食
電位測定については水素を含んだ炉水が測定部位に接し
ていなければならないことや、炉内構造物の任意の部位
の電位を直接測定することはできない等の課題がある。As a relatively simple method for evaluating the effect of suppressing stress corrosion cracking, there is a method of measuring corrosion potential. However, the corrosion potential measurement has problems such as that the reactor water containing hydrogen must be in contact with the measurement site, and the potential of any site of the furnace internal structure cannot be directly measured.
【００１０】本発明は上記課題を解決し、上記要望を満
たすためになされたもので、貴金属化学注入処理が施さ
れた材料の検査などに反映できる迅速かつ簡便な貴金属
化学注入効果の評価方法及びその評価装置を提供するこ
とにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has been made to satisfy the above-mentioned demands. A method for quickly and easily evaluating the effect of chemical injection of a noble metal which can be reflected in inspection of a material subjected to a chemical injection treatment of a noble metal, and It is to provide the evaluation device.
【００１１】[0011]
【課題を解決するための手段】請求項１の発明は貴金属
化学注入処理を施した原子炉、原子炉機器、又は冷却水
を通水する配管の一部、あるいはこれらとほぼ同等の材
料で製作し前記原子炉内で貴金属処理を施した材料を被
測定試料として参照電極に対して示す前記被測定試料の
腐食電位を溶存酸素水素濃度及び溶存酸素濃度を所定の
値に調整した純水又は水溶液の測定用水中で測定するこ
とにより、前記貴金属化学注入処理が施された前記被測
定試料の応力腐食割れ抑制効果を評価することを特徴と
する。According to the first aspect of the present invention, a part of a reactor, a reactor equipment, a pipe for passing cooling water through which a noble metal is chemically injected, or a material substantially equivalent thereto is used. A pure water or aqueous solution in which the corrosion potential of the sample to be measured is adjusted to a predetermined value by adjusting the corrosion potential of the sample to be measured to a reference electrode using a material subjected to a noble metal treatment in the reactor as a sample to be measured. By measuring in the measuring water, the effect of suppressing the stress corrosion cracking of the sample to be measured subjected to the noble metal chemical injection treatment is evaluated.
【００１２】請求項１の発明によれば、貴金属化学注入
処理による粒界応力腐食割れ抑制は腐食電位の卑化に起
因するものであることに着目し、貴金属注入処理された
材料の腐食電位を溶存水素濃度及び溶存水素濃度が調整
された純水又は水溶液中で測定し、貴金属化学注入の効
果を評価することができる。According to the first aspect of the present invention, attention is paid to the fact that the suppression of intergranular stress corrosion cracking by the noble metal chemical injection treatment is caused by the base of the corrosion potential. It is possible to evaluate the effect of chemical injection of noble metal by measuring the dissolved hydrogen concentration and pure water or an aqueous solution in which the dissolved hydrogen concentration is adjusted.
【００１３】請求項２の発明は、前記測定用水は電解質
として高温水中で分解してガスに変化する炭酸又は硝酸
を添加した水溶液からなることを特徴とする。請求項２
の発明によれば、電解質に高温水中で分解してガスとな
る炭酸又は硝酸を測定用水に添加することにより、運転
時に不純物イオンを残留することなく測定感度を向上す
ることができる。[0013] The invention of claim 2 is characterized in that the measuring water is composed of an aqueous solution to which carbonic acid or nitric acid, which decomposes in high-temperature water and changes into gas, is added as an electrolyte. Claim 2
According to the invention, by adding carbonic acid or nitric acid which is decomposed into gas into the electrolyte in high-temperature water to the water for measurement, the measurement sensitivity can be improved without impurity ions remaining during operation.
【００１４】請求項３の発明は、被測定試料上に載置さ
れる参照電極を内蔵した測定セルと、この測定セルに接
続した測定用水注入ラインと、この測定用水注入ライン
に接続した水質調整槽と、この水質調整槽に接続した水
素及び酸素注入ラインと、水素濃度計、酸素濃度計及び
導電率計を備えた測定用水循環ラインと、前記被測定試
料に接続する試料極端子と前記参照電極とを接続する電
位差計とを具備したことを特徴とする。According to a third aspect of the present invention, there is provided a measuring cell having a built-in reference electrode mounted on a sample to be measured, a measuring water injection line connected to the measuring cell, and a water quality adjusting device connected to the measuring water injection line. Tank, a hydrogen and oxygen injection line connected to the water quality adjustment tank, a hydrogen concentration meter, a water circulation line for measurement equipped with an oxygen concentration meter and a conductivity meter, a sample electrode terminal connected to the sample to be measured, and the reference. And a potentiometer for connecting the electrodes.
【００１５】請求項３の発明によれば、測定対象材料の
周囲の環境を隔離して水質を制御して腐食電位を測定す
ることにより、原子炉冷却水全体の水質を制御すること
なく貴金属化学注入効果を評価することができる。According to the third aspect of the present invention, the environment around the material to be measured is isolated, the water quality is controlled and the corrosion potential is measured, so that the noble metal chemistry can be controlled without controlling the water quality of the entire reactor cooling water. The injection effect can be evaluated.
【００１６】請求項４の発明は、前記測定セルの下端部
には前記被測定試料面に密着するシール又はこのシール
の上方にスリットあるいは接続センサを設けてなること
を特徴とする。According to a fourth aspect of the present invention, a seal or a slit or a connection sensor is provided above the seal at the lower end of the measurement cell.
【００１７】また、測定セル側面にスリットを設けるこ
とによりセル内部の炉水を排出しながら水質が調整され
た炉水を導入することができるため、測定対象材料周囲
の水質が一定に保たれた条件で腐食電位を測定すること
ができる。Further, by providing a slit on the side surface of the measuring cell, it is possible to introduce the reactor water whose water quality is adjusted while discharging the reactor water inside the cell, so that the water quality around the material to be measured is kept constant. The corrosion potential can be measured under the conditions.
【００１８】さらに、測定セルと測定対象材料の間に間
隔をあけることにより、測定用水の注入に伴いセル内部
の炉水が排出されるため、測定対象材料周囲の水質が一
定に保たれた条件で腐食電位を測定することができる。Further, by providing an interval between the measurement cell and the material to be measured, the reactor water inside the cell is discharged along with the injection of the water for measurement, so that the water quality around the material to be measured is kept constant. Can be used to measure the corrosion potential.
【００１９】請求項５の発明は、カメラ及び水中移動機
構を備えた炉内監視用ロボットに参照電極を内蔵した測
定セルを取付け、原子炉上部から前記測定セルを導入し
遠隔操作により評価対象部位まで前記測定セルを設置
し、前記測定セルに測定用水注入ラインを介して接続さ
れ水素及び酸素濃度が調整される測定用水を貯留した水
質調整槽を設けてなることを特徴とする。According to a fifth aspect of the present invention, a measuring cell having a built-in reference electrode is attached to a furnace monitoring robot having a camera and an underwater moving mechanism, the measuring cell is introduced from the upper part of the reactor, and a portion to be evaluated is remotely operated. And a water quality adjusting tank connected to the measuring cell via a measuring water injection line and storing measuring water whose hydrogen and oxygen concentrations are adjusted.
【００２０】請求項５の発明によれば、炉内監視ロボッ
トに測定セルを取付け、測定部位に運搬することによ
り、測定部位をサンプリングすることなく、任意の部位
における貴金属化学注入効果を評価することができる。According to the fifth aspect of the present invention, a measurement cell is attached to a furnace monitoring robot and transported to a measurement site, whereby the effect of noble metal chemical injection at an arbitrary site can be evaluated without sampling the measurement site. Can be.
【００２１】本発明の総合的な効果としては配管を水質
が調整された測定用水で満たし腐食電位を測定すること
により、原子炉外から測定セルの運搬が困難な部位の腐
食電位を原子炉冷却水全体の水質を制御することなく貴
金属処理効果を評価することができる。The overall effect of the present invention is to fill the pipe with measuring water whose quality is adjusted and measure the corrosion potential, so that the corrosion potential of the part where the measurement cell is difficult to be transported from outside the reactor can be reduced. The precious metal treatment effect can be evaluated without controlling the water quality of the whole water.
【００２２】原子炉内に予め挿入しておいた試験片を取
り出して腐食電位を測定することにより、原子炉構成材
料を炉内から取り出すことなく貴金属化学注入処理によ
る応力腐食割れ抑制効果を評価することができる。By taking out the test piece previously inserted into the reactor and measuring the corrosion potential, the effect of suppressing the stress corrosion cracking by the chemical injection treatment of the noble metal can be evaluated without removing the reactor constituent materials from the furnace. be able to.
【００２３】[0023]
【発明の実施の形態】図１から図３により請求項１の発
明に対応する貴金属化学注入処理効果の評価方法の第１
の実施の形態を説明する。1 to 3 show a first embodiment of a method for evaluating the effect of a chemical injection treatment of a noble metal according to the present invention.
An embodiment will be described.
【００２４】図１において、符号１は原子炉、２は参照
電極、３は原子炉１内に設置された炉心を包囲するシュ
ラウドで、シュラウド３に参照電極２を内蔵した測定セ
ル６が取付けられている。原子炉１の外側に試料極端子
４が取付けられ、試料極端子４と参照電極２は電位差計
７に電気的に接続し、電位差計７はパーソナルコンピュ
ータ８に接続している。In FIG. 1, reference numeral 1 denotes a reactor, reference numeral 2 denotes a reference electrode, reference numeral 3 denotes a shroud surrounding the reactor core installed in the reactor 1, and a measuring cell 6 having a reference electrode 2 built therein is attached to the shroud 3. ing. A sample electrode terminal 4 is mounted outside the reactor 1, and the sample electrode terminal 4 and the reference electrode 2 are electrically connected to a potentiometer 7, and the potentiometer 7 is connected to a personal computer 8.
【００２５】測定セル６は水質調整槽５に測定用水注入
ライン25を通して接続している。水質調整槽５には水素
濃度計11と酸素濃度計12が接続しており、水素（Ｈ2 ）
および酸素（Ｏ2 ）が注入され、必要に応じて窒素（Ｎ
2 ）が希釈ガスとして注入される。The measuring cell 6 is connected to the water quality adjusting tank 5 through a measuring water injection line 25. A hydrogen concentration meter 11 and an oxygen concentration meter 12 are connected to the water quality adjustment tank 5, and hydrogen (H 2 )
And oxygen (O 2 ) are injected, and nitrogen (N
2 ) is injected as diluent gas.
【００２６】定期点検等の理由で原子炉１が解放された
状態で測定セル６を炉内構造物に設置する。図１では炉
内構造物の例としてシュラウド３を対象とした場合を示
しているため、試料極端子４を原子炉１に取付けて参照
電極２とともに腐食電位を測定するための導通を取って
いる。The measurement cell 6 is installed on the internal structure of the reactor while the reactor 1 is open for a reason such as a periodic inspection. FIG. 1 shows a case in which the shroud 3 is used as an example of the furnace internal structure. Therefore, the sample electrode terminal 4 is attached to the nuclear reactor 1 and conduction for measuring the corrosion potential together with the reference electrode 2 is established. .
【００２７】水質調整槽５で溶存水素濃度及び溶存酸素
濃度が制御された純水又は水溶液の測定用水を調整す
る。この測定用水を測定セル６内に送り込み、測定セル
６内部を水質が制御された測定用水で満たした状態にす
る。この状態で測定セル６内に設置された参照電極２に
対するシュラウド３の腐食電位を電位差計７で測定し、
その結果をパソコン８で記録する。In the water quality adjusting tank 5, pure water or water for measuring an aqueous solution in which the dissolved hydrogen concentration and the dissolved oxygen concentration are controlled is adjusted. This measuring water is sent into the measuring cell 6, and the inside of the measuring cell 6 is filled with the controlled measuring water. In this state, the corrosion potential of the shroud 3 with respect to the reference electrode 2 installed in the measurement cell 6 was measured by a potentiometer 7,
The result is recorded by the personal computer 8.
【００２８】図２に貴金属付着密度と応力腐食割れ感受
性の関係を示す。図２から一定量以上貴金属が付着する
ことにより応力腐食割れ感受性は大きく低下することが
認められる。また、図３に貴金属付着密度と腐食電位の
関係を示す。図３から貴金属付着密度とともに腐食電位
は卑化し、付着密度が一定量以上となると腐食電位は大
きく卑化することが認められる。このことより、腐食電
位を測定することにより応力腐食割れ感受性を低減する
ために十分な貴金属着密度が得られていることを評価す
ることができる。FIG. 2 shows the relationship between the noble metal adhesion density and the susceptibility to stress corrosion cracking. From FIG. 2, it is recognized that the stress corrosion cracking susceptibility is greatly reduced by the attachment of a predetermined amount or more of noble metal. FIG. 3 shows the relationship between the noble metal adhesion density and the corrosion potential. From FIG. 3, it is recognized that the corrosion potential becomes lower together with the noble metal adhesion density, and that the corrosion potential becomes significantly lower when the adhesion density exceeds a certain amount. From this, by measuring the corrosion potential, it can be evaluated that a sufficient noble metal deposition density for reducing the stress corrosion cracking susceptibility has been obtained.
【００２９】本実施の形態によれば、貴金属付着密度を
評価することにより、貴金属化学注入処理工事後の貴金
属付着状況及び貴金属化学注入処理後ある期間運転した
後の貴金属付着状況に関する情報が得られ、これにより
応力腐食割れ抑制効果を得るために十分な貴金属付着状
況が得られているか否かを判定することができる。ま
た、貴金属付着状況の経時変化により、貴金属化学注入
処理を再施工する時期を予測することができる。According to the present embodiment, by evaluating the noble metal adhesion density, information on the noble metal adhesion status after the noble metal chemical injection treatment and the noble metal adhesion status after a certain period of operation after the noble metal chemical injection treatment can be obtained. Thus, it can be determined whether or not a sufficient noble metal adhesion state for obtaining the effect of suppressing stress corrosion cracking has been obtained. In addition, it is possible to predict a time when the precious metal chemical injection treatment is to be re-applied, based on a change with time of the noble metal adhesion state.
【００３０】なお、請求項２の発明に対応する発明の実
施の形態としては、第１の実施の形態における測定用水
に電解質として高温水中で分解してガスに変化する炭酸
又は硝酸を添加することにある。これにより、運転時に
不純物イオンを残留することなく、測定感度を向上する
ことができる。As an embodiment of the invention corresponding to the second aspect of the invention, the measurement water in the first embodiment is added with carbonic acid or nitric acid which decomposes in high-temperature water and changes into gas as an electrolyte. It is in. Thereby, the measurement sensitivity can be improved without the impurity ions remaining during operation.
【００３１】次に、図４により本発明の請求項３に対応
する貴金属化学注入効果の評価装置の第１の実施の形態
を説明する。図４中、図１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。Next, a first embodiment of an apparatus for evaluating the effect of chemical injection of a noble metal according to a third aspect of the present invention will be described with reference to FIG. 4, the same parts as those in FIG. 1 are denoted by the same reference numerals, and the description of the overlapping parts will be omitted.
【００３２】本実施の形態が図１の装置と異なる点はシ
ュラウド３に代る被測定試料９と、水質調整槽５に接続
した測定用水循環ライン26および水素及び酸素注入ライ
ン27と、各ライン26，27にそれぞれ取付けた流量計16を
設置したことにある。The present embodiment is different from the apparatus shown in FIG. 1 in that a sample 9 to be measured instead of the shroud 3, a measurement water circulation line 26 and a hydrogen and oxygen injection line 27 connected to the water quality adjustment tank 5, That is, the flowmeter 16 attached to each of 26 and 27 was installed.
【００３３】測定用水循環ライン26には水素濃度計11，
酸素濃度計12及び導電率計13を備え、水素及び酸素注入
ライン27には水素ボンベ14と酸素ボンベ15を備えてい
る。また、測定セル６は下端開口部を有し、上端から挿
入された測定用水注入ノズル10および参照電極２を備え
ている。被測定試料９に参照電極２と測定部との導通を
取るための試料極端子４を有し、電位差計７に接続す
る。水質調整槽５は水質を制御するためのものである。In the measuring water circulation line 26, a hydrogen concentration meter 11,
An oxygen concentration meter 12 and a conductivity meter 13 are provided, and a hydrogen and oxygen injection line 27 is provided with a hydrogen cylinder 14 and an oxygen cylinder 15. The measuring cell 6 has a lower end opening and includes a measuring water injection nozzle 10 and a reference electrode 2 inserted from the upper end. The sample 9 to be measured has a sample electrode terminal 4 for establishing conduction between the reference electrode 2 and the measuring section, and is connected to the potentiometer 7. The water quality adjusting tank 5 is for controlling water quality.
【００３４】本実施の形態によれば、水質調整槽５によ
り溶存水素濃度及び溶存酸素濃度を制御した純水又は水
溶液を測定用水注入ライン25を通して測定セル６に注入
し、被測定試料９と参照電極２間の電位差を電位差計７
で測定することにより腐食電位を得ることができる。こ
の腐食電位はパーソナルコンピュータ８により記録され
る。According to the present embodiment, pure water or an aqueous solution in which the dissolved hydrogen concentration and the dissolved oxygen concentration are controlled by the water quality adjusting tank 5 is injected into the measuring cell 6 through the measuring water injection line 25 and is referred to as the sample 9 to be measured. The potential difference between the electrodes 2 is measured by a potentiometer 7
The corrosion potential can be obtained by performing the above measurement. This corrosion potential is recorded by the personal computer 8.
【００３５】次に、図５により、本発明の請求項４に対
応する貴金属化学注入効果の評価装置の第２の実施の形
態を説明する。本実施の形態は図４に示した測定セル６
とほぼ同様の構成を有する測定セル19の下端開口部にシ
ール20を設けたことにある。測定セル19は被測定試料９
とシール20により密着し、測定部の環境を炉水から隔離
することができる。また、測定セル19は測定用水注入ノ
ズル10と測定用水排出ノズル18を備え、注水と排水を同
時に行うことにより、測定セル19内を常に所定の水質に
保つことができる。これにより測定用水の水質を変化し
ながら腐食電位を測定し、両者の関係を測定することが
できる。Next, a second embodiment of the apparatus for evaluating the effect of chemical injection of a noble metal according to the present invention will be described with reference to FIG. In this embodiment, the measuring cell 6 shown in FIG.
That is, a seal 20 is provided at the lower end opening of the measurement cell 19 having substantially the same configuration as that of FIG. The measurement cell 19 is the sample 9 to be measured.
And the seal 20 so that the environment of the measuring section can be isolated from the reactor water. The measurement cell 19 includes the measurement water injection nozzle 10 and the measurement water discharge nozzle 18, and by simultaneously performing water injection and drainage, the inside of the measurement cell 19 can always be maintained at a predetermined water quality. Thus, the corrosion potential can be measured while changing the quality of the measurement water, and the relationship between the two can be measured.
【００３６】図６は測定用水の溶存水素濃度／溶存酸素
濃度比と腐食電位の関係を示している。すなわち、溶存
水素濃度／酸素濃度比の増加に伴い貴金属化学注入によ
り貴金属が付着した材料の腐食電位は卑化する。この腐
食電位の卑化の挙動は貴金属付着密度により異なる。従
って、所定の溶存水素濃度／溶存酸素濃度比に対する腐
食電位を測定することにより、貴金属化学注入効果の貴
金属付着密度の評価ができる。FIG. 6 shows the relationship between the dissolved hydrogen concentration / dissolved oxygen concentration ratio of the measuring water and the corrosion potential. In other words, as the ratio of the concentration of dissolved hydrogen to the concentration of oxygen increases, the corrosion potential of the material to which the noble metal has adhered due to the chemical injection of the noble metal becomes lower. The behavior of the base of the corrosion potential differs depending on the noble metal adhesion density. Therefore, by measuring the corrosion potential with respect to a predetermined dissolved hydrogen concentration / dissolved oxygen concentration ratio, the noble metal adhesion density of the noble metal chemical injection effect can be evaluated.
【００３７】本実施の形態によれば、常に測定セル19内
の測定用水の水質を制御することができるため、連続的
に水質を変えた環境での水質に対する腐食電位の変化を
測定することができる。これにより、水質を変化したと
きの腐食電位の変化量など、信頼性の高い評価パラメー
タを測定することができる。According to the present embodiment, since the quality of the measuring water in the measuring cell 19 can be constantly controlled, it is possible to measure the change of the corrosion potential with respect to the water quality in an environment where the water quality is continuously changed. it can. This makes it possible to measure highly reliable evaluation parameters such as the amount of change in corrosion potential when the water quality changes.
【００３８】次に、図７により、本発明の請求項４に対
応する貴金属化学注入効果の評価装置の第３の実施の形
態を説明する。本実施の形態は図５で説明した測定セル
19において、測定用水排出ノズル18の代りに測定セル19
側面に排水用のスリット21を設けたことにある。その他
の構成は図５と同様であるので、図７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。Next, a third embodiment of the apparatus for evaluating the effect of chemical injection of a noble metal according to the present invention will be described with reference to FIG. In this embodiment, the measuring cell described with reference to FIG.
19, a measuring cell 19 is used instead of the measuring water discharge nozzle 18.
This is because a slit 21 for drainage is provided on the side surface. Other configurations are the same as those in FIG. 5, and therefore, in FIG. 7, the same portions as those in FIG.
【００３９】本実施の形態によれば注水に伴い測定セル
19内の測定用水はスリット21を通して排出されるため、
ポンプにより測定用水を排出することなく水質を制御し
た測定が容易にできる。According to the present embodiment, the measuring cell
Since the measuring water in 19 is discharged through the slit 21,
The water quality can be easily controlled without discharging the water for measurement by the pump.
【００４０】次に、図８により、本発明の請求項４に対
応する貴金属化学注入効果の評価装置の第４の実施の形
態を説明する。本実施の形態は測定セル19を被測定試料
９に接触させることなく、測定セル19と被測定試料９の
すき間から排水を行うことにある。本実施の形態によれ
ば、非接触であるため、測定セル19の下端開口部に設け
た図５および図７に示したシール20を削除することがで
きる。また、測定セル19の下端部に接触センサ22を設け
ることにより、非接触であっても被測定試料９の面に対
する測定セル19の位置関係を常に一定に保って測定を行
うことができる。Next, a fourth embodiment of the apparatus for evaluating the effect of chemical injection of a noble metal according to the present invention will be described with reference to FIG. In the present embodiment, the drainage is performed from the gap between the measurement cell 19 and the sample 9 without bringing the measurement cell 19 into contact with the sample 9. According to the present embodiment, since there is no contact, the seal 20 shown in FIGS. 5 and 7 provided at the lower end opening of the measurement cell 19 can be omitted. Further, by providing the contact sensor 22 at the lower end of the measurement cell 19, the measurement can be performed while the positional relationship of the measurement cell 19 with respect to the surface of the sample 9 to be measured is always kept constant even in non-contact.
【００４１】次に、図９により本発明の請求項３に対応
する貴金属化学注入効果の評価装置の第５の実施形態を
説明する。被測定材料の例としては炉内機器のみに限る
ものではなく、図９に示したように原子炉再循環系（以
下、PLR と記す）等ステンレス鋼製のPLR 配管23に対し
ても応力腐食割れ抑制効果が発揮される。しかし、この
ような部位に対して炉外から測定セル６または19を挿入
して設置することは困難である。Next, a fifth embodiment of the apparatus for evaluating the effect of chemical injection of a noble metal according to the third aspect of the present invention will be described with reference to FIG. The example of the material to be measured is not limited to the in-reactor equipment alone, and stress corrosion is also applied to a stainless steel PLR pipe 23 such as a reactor recirculation system (hereinafter referred to as PLR) as shown in FIG. A crack suppressing effect is exhibited. However, it is difficult to insert and install the measurement cell 6 or 19 from such a location outside the furnace.
【００４２】そこで、本実施の形態では測定セル６又は
19に代るものとしてPLR 配管23の一部に参照電極２と試
料極端子４を取付け、溶存水素濃度及び溶存酸素濃度を
制御した純水または水溶液で満たし、PLR 配管23の腐食
電位を測定する評価装置を提供することにある。Therefore, in this embodiment, the measuring cell 6 or
As an alternative to 19, the reference electrode 2 and the sample electrode terminal 4 are attached to a part of the PLR pipe 23 and filled with pure water or an aqueous solution in which the dissolved hydrogen concentration and the dissolved oxygen concentration are controlled, and the corrosion potential of the PLR pipe 23 is measured. It is to provide an evaluation device.
【００４３】図９はPLR 配管23における貴金属化学注入
効果評価装置の構成を示したものである。図９におい
て、原子炉１に接続したPLR 配管23内部に参照電極２を
取付け、PLR 配管23の外側面に試料極端子４を取付け
る。PLR 配管23に測定用水注入ライン25と測定用水戻り
ライン28を介して水質調整槽５を接続する。その他は図
１と同様の構成となっている。FIG. 9 shows the configuration of a device for evaluating the effect of noble metal chemical injection in the PLR pipe 23. In FIG. 9, the reference electrode 2 is mounted inside the PLR pipe 23 connected to the reactor 1, and the sample electrode terminal 4 is mounted on the outer surface of the PLR pipe 23. The water quality adjusting tank 5 is connected to the PLR pipe 23 via a measuring water injection line 25 and a measuring water return line 28. Other configurations are the same as those in FIG.
【００４４】本実施の形態によれば、定期点検等、原子
炉１の停止中にPLR 配管23の一部を隔離し、PLR ポンプ
24により溶存水素濃度及び溶存酸素濃度を制御した純水
又は水溶液を測定用水注入ライン25および測定用水戻り
ライン28を通して循環させる。PLR 配管23内に参照電極
２を取付けることにより、参照電極２に対するPLR 配管
23の腐食電位を測定し貴金属化学注入効果を評価するこ
とができる。According to the present embodiment, a part of the PLR pipe 23 is isolated during the shutdown of the reactor 1 for periodical inspection or the like, and the PLR pump 23 is isolated.
Pure water or an aqueous solution whose dissolved hydrogen concentration and dissolved oxygen concentration are controlled by 24 is circulated through a measuring water injection line 25 and a measuring water return line 28. By mounting the reference electrode 2 in the PLR pipe 23, the PLR pipe
The corrosion potential of 23 can be measured to evaluate the effect of chemical injection of precious metals.
【００４５】次に、請求項５に対応する発明の第６の実
施の形態を説明する。本実施の形態は、カメラ及び水中
移動機構を備えた炉内監視用ロボットに図１、図４、図
７又は図８に示した測定セル６または19を取付け、図１
又は図９に示した原子炉１の上部から測定セル６または
19を導入し、遠隔操作により評価対象部位まで測定セル
６又は19を輸送し、腐食電位を測定することにある。Next, a sixth embodiment of the invention corresponding to claim 5 will be described. In the present embodiment, the measuring cell 6 or 19 shown in FIG. 1, FIG. 4, FIG. 7 or FIG. 8 is attached to a furnace monitoring robot provided with a camera and an underwater moving mechanism.
Or, from the upper part of the reactor 1 shown in FIG.
19 is to be introduced, the measuring cell 6 or 19 is transported to a site to be evaluated by remote control, and the corrosion potential is measured.
【００４６】この場合、例えば図１、図４又は図９に示
したように測定セル６又は19に測定用水注入ライン25を
介して水質調整槽５を設ける。水質調整槽５には水素及
び酸素濃度が調整された測定用水を貯留する。これによ
り、測定部位に測定セルを運搬し、測定部位をサンプリ
ングすることなく、任意の部位における貴金属化学注入
効果を評価できる。In this case, for example, as shown in FIG. 1, FIG. 4 or FIG. 9, the water quality adjusting tank 5 is provided in the measuring cell 6 or 19 via the measuring water injection line 25. The water for adjusting the hydrogen and oxygen concentrations is stored in the water quality adjusting tank 5. As a result, the effect of noble metal chemical injection at an arbitrary site can be evaluated without transporting the measurement cell to the measurement site and sampling the measurement site.
【００４７】[0047]
【発明の効果】本発明によれば、つぎに述べる効果があ
る。貴金属化学注入処理では貴金属が付着することによ
り少量の水素注入で腐食電位が卑化し、粒界応力腐食割
れが抑制されることから、原子炉を構成する材料の腐食
電位を水質が制御された純水又は水溶液の測定用水中で
測定することにより貴金属化学注入効果を評価すること
ができる。According to the present invention, the following effects can be obtained. In the precious metal chemical injection treatment, the noble metal adheres, and a small amount of hydrogen implants lowers the corrosion potential and suppresses intergranular stress corrosion cracking. The effect of noble metal chemical injection can be evaluated by measuring in water or water for measuring an aqueous solution.
【００４８】また、参照電極及び測定水供給装置を備え
た測定用セルと、測定部位との導通を取るための端子
と、腐食電位を測定するための参照電極と、腐食電位を
測定するための電位差計と、水質制御装置からなる測定
装置を用いることにより、水質が制御された環境での腐
食電位を測定することができる。Also, a measuring cell provided with a reference electrode and a measuring water supply device, a terminal for establishing continuity with a measuring site, a reference electrode for measuring a corrosion potential, and a terminal for measuring a corrosion potential. By using a potentiometer and a measuring device including a water quality control device, the corrosion potential in an environment where the water quality is controlled can be measured.
【図１】本発明に係る貴金属化学注入効果の評価方法の
第１の実施の形態を説明するための装置配置図。FIG. 1 is an apparatus layout diagram for explaining a first embodiment of a method for evaluating a noble metal chemical injection effect according to the present invention.
【図２】図１において、貴金属付着密度と応力腐食割れ
感受性を示すプロット図。FIG. 2 is a plot diagram showing the noble metal adhesion density and stress corrosion cracking susceptibility in FIG.
【図３】同じく、貴金属付着密度と腐食電位の関係を示
すプロット図。FIG. 3 is a plot diagram showing the relationship between the noble metal adhesion density and the corrosion potential.
【図４】本発明に係る貴金属化学注入効果の評価装置の
第１の実施の形態を説明するための系統図。FIG. 4 is a system diagram for explaining a first embodiment of an apparatus for evaluating a noble metal chemical injection effect according to the present invention.
【図５】本発明に係る貴金属化学注入効果の評価装置の
第２の実施の形態を説明するための側面図。FIG. 5 is a side view for explaining a second embodiment of the noble metal chemical injection effect evaluation apparatus according to the present invention.
【図６】図４において、溶存酸素／酸素濃度と腐食電位
の関係を示すプロット図。FIG. 6 is a plot diagram showing the relationship between dissolved oxygen / oxygen concentration and corrosion potential in FIG.
【図７】本発明に係る貴金属化学注入効果の評価装置の
第３の実施の形態を説明するための側面図。FIG. 7 is a side view for explaining a third embodiment of the apparatus for evaluating a noble metal chemical injection effect according to the present invention.
【図８】本発明に係る貴金属化学注入効果の評価装置の
第４の実施の形態を説明するための側面図。FIG. 8 is a side view for explaining a fourth embodiment of the noble metal chemical injection effect evaluation apparatus according to the present invention.
【図９】本発明に係る貴金属化学注入効果の評価装置の
第５の実施の形態を説明するための系統図。FIG. 9 is a system diagram for explaining a fifth embodiment of the apparatus for evaluating a noble metal chemical injection effect according to the present invention.
１…原子炉、２…参照電極、３…シュラウド、４…試料
極端子、５…水質調整槽、６…測定セル、７…電位差
計、８…パーソナルコンピュータ、９…被測定試料、10
…測定用水注入ノズル、11…水素濃度計、12…酸素濃度
計、13…導電率計、14…水素ボンベ、15…酸素ボンベ、
16…流量計、17…ポンプ、18…測定用水排出ノズル、19
…測定セル、20…シール、21…スリット、22…接触セン
サ、23…PLR 配管、24…PLR ポンプ、25…測定用水注入
ライン、26…測定用水循環ライン、27…水素及び酸素注
入ライン、28…測定用水戻りライン。DESCRIPTION OF SYMBOLS 1 ... Reactor, 2 ... Reference electrode, 3 ... Shroud, 4 ... Sample electrode terminal, 5 ... Water quality adjustment tank, 6 ... Measurement cell, 7 ... Potentiometer, 8 ... Personal computer, 9 ... Sample to be measured, 10
... water injection nozzle for measurement, 11 ... hydrogen concentration meter, 12 ... oxygen concentration meter, 13 ... conductivity meter, 14 ... hydrogen cylinder, 15 ... oxygen cylinder,
16… Flow meter, 17… Pump, 18… Measuring water discharge nozzle, 19
... Measurement cell, 20 ... Seal, 21 ... Slit, 22 ... Contact sensor, 23 ... PLR pipe, 24 ... PLR pump, 25 ... Measurement water injection line, 26 ... Measurement water circulation line, 27 ... Hydrogen and oxygen injection line, 28 … Water return line for measurement.
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｇ２１Ｃ 17/02 Ｇ２１Ｃ 17/00 Ｒ Ｇ２１Ｄ 1/00 17/02 Ｆ 3/08 Ｇ２１Ｄ 1/00 Ｘ (72)発明者 阿部 由美子 神奈川県横浜市磯子区新杉田町８番地 株 式会社東芝横浜事業所内 (72)発明者 斉藤 宣久 神奈川県横浜市磯子区新杉田町８番地 株 式会社東芝横浜事業所内 Ｆターム(参考） 2G050 AA01 BA01 BA03 BA10 CA02 CA04 DA01 EA01 EA04 EA05 EA06 EB03 EC01 EC03 2G075 AA02 BA17 CA07 CA13 DA15 EA03 FA10 FA20 FC04 FC14 GA02 GA21 Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat II (reference) G21C 17/02 G21C 17/00 R G21D 1/00 17/02 F 3/08 G21D 1/00 X (72) Inventor Yumiko Abe 8 Shinsugita-cho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Inside the Toshiba Yokohama Office, Ltd. (72) Inventor Norihisa Saito 8 Shinsugita-cho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture F-term in the Toshiba Yokohama Office 2G050 AA01 BA01 BA03 BA10 CA02 CA04 DA01 EA01 EA04 EA05 EA06 EB03 EC01 EC03 2G075 AA02 BA17 CA07 CA13 DA15 EA03 FA10 FA20 FC04 FC14 GA02 GA21
Claims (5)
子炉機器、又は冷却水を通水する配管の一部、あるいは
これらとほぼ同等の材料で製作し前記原子炉内で貴金属
処理を施した材料を被測定試料として参照電極に対して
示す前記被測定試料の腐食電位を、溶存酸素水素濃度及
び溶存酸素濃度を所定の値に調整した純水又は水溶液の
測定用水中で測定することにより、前記貴金属化学注入
処理が施された前記被測定試料の応力腐食割れ抑制効果
を評価することを特徴とする貴金属化学注入効果の評価
方法。1. A reactor, a reactor equipment, or a part of a piping through which cooling water flows, or a material substantially equivalent thereto, which has been subjected to a chemical injection treatment of a noble metal, and is subjected to a noble metal treatment in the reactor. By measuring the corrosion potential of the sample to be measured, which shows the material thus measured as a sample to be measured with respect to a reference electrode, in pure water or water for measurement of an aqueous solution in which the dissolved oxygen-hydrogen concentration and the dissolved oxygen concentration have been adjusted to predetermined values. A method for evaluating a chemical injection effect of the noble metal, wherein the effect of suppressing the stress corrosion cracking of the sample to be measured subjected to the chemical injection treatment of the noble metal is evaluated.
分解してガスに変化する炭酸又は硝酸を添加した水溶液
からなることを特徴とする請求項１記載の貴金属化学注
入効果の評価方法。2. The method for evaluating the effect of chemical injection of a noble metal according to claim 1, wherein the water for measurement comprises an aqueous solution to which carbonic acid or nitric acid which is decomposed in high-temperature water and changes into a gas as an electrolyte is added.
蔵した測定セルと、この測定セルに接続した測定用水注
入ラインと、この測定用水注入ラインに接続した水質調
整槽と、この水質調整槽に接続した水素及び酸素注入ラ
インと、水素濃度計、酸素濃度計及び導電率計を備えた
測定用水循環ラインと、前記被測定試料に接続する試料
極端子と前記参照電極とを接続する電位差計とを具備し
たことを特徴とする貴金属化学注入効果の評価装置。3. A measuring cell having a built-in reference electrode mounted on a sample to be measured, a measuring water injection line connected to the measuring cell, a water quality adjusting tank connected to the measuring water injection line, A hydrogen and oxygen injection line connected to the adjustment tank, a measurement water circulation line including a hydrogen concentration meter, an oxygen concentration meter, and a conductivity meter, and a sample electrode terminal connected to the sample to be measured and the reference electrode are connected. An apparatus for evaluating the effect of chemical injection of a noble metal, comprising: a potentiometer.
料面に密着するシール又はこのシールの上方にスリット
あるいは接続センサを設けてなることを特徴とする請求
項３記載の貴金属化学注入効果の評価装置。4. The noble metal chemical injection effect according to claim 3, wherein a seal or a slit or a connection sensor is provided at a lower end portion of the measurement cell in close contact with the surface of the sample to be measured or above the seal. Evaluation device.
視用ロボットに参照電極を内蔵した測定セルを取付け、
原子炉上部から前記測定セルを導入し遠隔操作により評
価対象部位まで前記測定セルを設置し、前記測定セルに
測定用水注入ラインを介して接続され水素及び酸素濃度
が調整される測定用水を貯留した水質調整槽を設けてな
ることを特徴とする貴金属化学注入効果の評価装置。5. A measuring cell having a built-in reference electrode is attached to a furnace monitoring robot having a camera and an underwater moving mechanism,
The measurement cell was introduced from the upper part of the reactor and the measurement cell was set up to the evaluation target site by remote control, and the measurement water connected to the measurement cell via a measurement water injection line and the hydrogen and oxygen concentrations were adjusted was stored. An apparatus for evaluating the effect of chemical injection of precious metals, comprising a water quality adjusting tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31804199A JP2001133428A (en) | 1999-11-09 | 1999-11-09 | Method for evaluating noble metal chemical injection effect and apparatus therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31804199A JP2001133428A (en) | 1999-11-09 | 1999-11-09 | Method for evaluating noble metal chemical injection effect and apparatus therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001133428A true JP2001133428A (en) | 2001-05-18 |
Family
ID=18094845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31804199A Pending JP2001133428A (en) | 1999-11-09 | 1999-11-09 | Method for evaluating noble metal chemical injection effect and apparatus therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001133428A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006090712A (en) * | 2004-09-21 | 2006-04-06 | Hiroshima Univ | Corrosion tester |
| JP2013068614A (en) * | 2011-09-23 | 2013-04-18 | Ge-Hitachi Nuclear Energy Americas Llc | Method for controlling oxygen concentration of reactor cooling water sample by using desalinated water |
| JP2018155588A (en) * | 2017-03-17 | 2018-10-04 | 日立Ｇｅニュークリア・エナジー株式会社 | Method for analyzing amount of adhering noble metal |
| CN109507236A (en) * | 2018-11-23 | 2019-03-22 | 歌尔股份有限公司 | Metal adhesive detection circuit and detection device |
| CN111551482A (en) * | 2020-05-15 | 2020-08-18 | 中国核动力研究设计院 | Comprehensive dynamic water corrosion test device with high-temperature and high-pressure one-loop and two-loop linkage operation |
| CN114839233A (en) * | 2021-02-01 | 2022-08-02 | 中国石油化工股份有限公司 | Test pipeline system and method for simulating flow and corrosion of large pipeline |
-
1999
- 1999-11-09 JP JP31804199A patent/JP2001133428A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006090712A (en) * | 2004-09-21 | 2006-04-06 | Hiroshima Univ | Corrosion tester |
| JP2013068614A (en) * | 2011-09-23 | 2013-04-18 | Ge-Hitachi Nuclear Energy Americas Llc | Method for controlling oxygen concentration of reactor cooling water sample by using desalinated water |
| US9443621B2 (en) | 2011-09-23 | 2016-09-13 | Ge-Hitachi Nuclear Energy Americas Llc | Method of adjusting oxygen concentration of reactor water samples using demineralized water |
| JP2018155588A (en) * | 2017-03-17 | 2018-10-04 | 日立Ｇｅニュークリア・エナジー株式会社 | Method for analyzing amount of adhering noble metal |
| CN109507236A (en) * | 2018-11-23 | 2019-03-22 | 歌尔股份有限公司 | Metal adhesive detection circuit and detection device |
| CN111551482A (en) * | 2020-05-15 | 2020-08-18 | 中国核动力研究设计院 | Comprehensive dynamic water corrosion test device with high-temperature and high-pressure one-loop and two-loop linkage operation |
| CN114839233A (en) * | 2021-02-01 | 2022-08-02 | 中国石油化工股份有限公司 | Test pipeline system and method for simulating flow and corrosion of large pipeline |
| CN114839233B (en) * | 2021-02-01 | 2024-03-29 | 中国石油化工股份有限公司 | Test pipeline system and method for simulating flow and corrosion of large pipeline |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5519330A (en) | Method and apparatus for measuring degree of corrosion of metal materials | |
| US8191406B2 (en) | Method and device for pretreating a fuel rod cladding tube for material tests, test body and method for testing corrosion characteristics | |
| US6487265B1 (en) | Treatment method of nuclear reactor internal component | |
| Manahan Sr et al. | Determination of the fate of the current in the stress corrosion cracking of sensitized type 304SS in high temperature aqueous systems | |
| Indig et al. | Electrochemical measurements and modeling predictions in boiling water reactors under various operating conditions | |
| JPH10505684A (en) | Metal alloy coating for reducing stress corrosion cracking of metal parts in high temperature water | |
| US5579354A (en) | Method of measuring a corrosion potential, method of simulating potential characteristics of a reaction rate, and plant monitoring system adopting them | |
| JPH10504908A (en) | Noble metal-added insulating protective coating for reducing stress corrosion cracking | |
| JPH0821793A (en) | Method for evaluating corrosion resistance of metallic material, method for designing high corrosion-resistant alloy, method for diagnosing corrosion state of metallic material and method for operating plant | |
| JP2001133428A (en) | Method for evaluating noble metal chemical injection effect and apparatus therefor | |
| JP2001091688A (en) | Nuclear power plant | |
| JP2008008750A (en) | Corrosive environment determination method of nuclear reactor cooling water, and device therefor | |
| JP4777835B2 (en) | Crevice water quality measurement method and crevice water quality measurement device | |
| JP3061707B2 (en) | Method and apparatus for measuring corrosion of metallic materials | |
| JPH10186085A (en) | Device and method for sticking noble metal to nuclear reactor structural material | |
| JPH11295480A (en) | Method for forming catalyst surface | |
| JPH08220293A (en) | Operation method for nuclear power plant | |
| US5316633A (en) | Method and apparatus for measuring sensitization of structural members | |
| JP2743717B2 (en) | Sensitivity detection method for structural materials and water quality control system for nuclear power plant | |
| US8424395B2 (en) | Apparatus for monitoring deposition of a noble metal in a nuclear reactor | |
| JPH10111286A (en) | Evaluation of water quality of reactor water of nuclear reactor | |
| RU2705565C1 (en) | Method of controlling corrosion rate of equipment of technological circuits of nuclear power plants | |
| JPH0777597A (en) | Water quality control method for nuclear reactor | |
| JP2003222697A (en) | Method for evaluating quantity of accreting noble metal and method for accreting noble metal | |
| JP4557511B2 (en) | Method and apparatus for inhibiting corrosion of nuclear reactor structural members |