JPS6199890A - Method of repairing sealing surface of pressure tube for pressure tube type reactor - Google Patents
Method of repairing sealing surface of pressure tube for pressure tube type reactorInfo
- Publication number
- JPS6199890A JPS6199890A JP59221148A JP22114884A JPS6199890A JP S6199890 A JPS6199890 A JP S6199890A JP 59221148 A JP59221148 A JP 59221148A JP 22114884 A JP22114884 A JP 22114884A JP S6199890 A JPS6199890 A JP S6199890A
- Authority
- JP
- Japan
- Prior art keywords
- pressure tube
- sealing surface
- pressure pipe
- pressure
- seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Heat Treatment Of Articles (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】
（産業上の利用分野）
本発明は圧力管型原子炉の圧力管シール面の補修方法に
係るものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for repairing a pressure tube sealing surface of a pressure tube nuclear reactor.
（従来の技術）
圧力管型の原子炉においては第６図に示すように圧力管
シール部（１）内にシールプラグ（２）を挿入し、同シ
ールプラグ（２）のチタン合金等より構成されたシール
材（３）を圧力管シール面（４）に密着させ、軽水、重
水等の一次冷却水（５）をシールする。図中（６）は大
気である。(Prior art) In a pressure tube type nuclear reactor, as shown in Figure 6, a seal plug (2) is inserted into the pressure tube seal portion (1), and the seal plug (2) is made of titanium alloy or the like. The sealed sealing material (3) is brought into close contact with the pressure pipe sealing surface (4) to seal primary cooling water (5) such as light water or heavy water. (6) in the figure is the atmosphere.
（発明が解決しようとする問題点）
而して原子炉運転中には一次冷却水（５）の温度及び圧
力が上昇するため、圧力管シール面（４）におけるシー
ル材（３）との接触部は血圧が非常に高（なり、長時間
使用する間に凹形に変形する。また長時間の使用により
圧力管シール面（４）におけるシール材（３）との接触
部には隙間腐蝕が発生する。(Problem to be Solved by the Invention) During reactor operation, the temperature and pressure of the primary cooling water (5) increase, so contact with the sealing material (3) on the pressure pipe sealing surface (4) increases. The area has extremely high blood pressure (and deforms into a concave shape during long-term use.Also, due to long-term use, crevice corrosion occurs at the contact area of the pressure pipe sealing surface (4) with the sealing material (3)). Occur.
これらの害を極力小さくするために、圧力シール部の材
料は硬くて耐蝕性のあるマルテンサイト型のＳＵＳ ４
０５等のステンレス鋼が使用されているが、これらの害
を完全に防止することはできな〜１゜
圧力管シール面（４）の変形及び腐蝕が太き（なると−
次冷却水（５）のリークが発生するため、数年に一度の
割合で圧力管シール面（４）の補修が行なわれる。この
補修には、圧力管シール面（４）を機械的に切削、或い
は研摩する方法が採用されており、補修後の圧力管シー
ル面（４）は圧力管シール部（１）の母材の性状そのま
まで、圧力管シール面（４）の性状ノみを向上させるこ
とはできない。In order to minimize these harms, the pressure seal part is made of hard and corrosion-resistant martensitic SUS 4.
Although stainless steel such as 05 is used, it is not possible to completely prevent these damages.
Since leakage of the next cooling water (5) occurs, the pressure pipe sealing surface (4) is repaired once every few years. For this repair, a method of mechanically cutting or polishing the pressure pipe seal surface (4) is adopted, and the pressure pipe seal surface (4) after repair is similar to the base material of the pressure pipe seal part (1). It is not possible to improve the properties of the pressure pipe sealing surface (4) without changing the properties.
（問題点を解決するための手段）
本発明はこのような問題点を解決するために提案された
ものであって、圧力管型原子炉の圧力管シール面を補修
する方法において、前記圧力管シール面に切削及び研摩
等の機械的補修を施したのち、ボアスコープ型ＣＯ２レ
ーザー光伝送装置を使用して機械的補修された前記シー
ル面にＣＯ２レーザー光により表面焼入れを施し、同シ
ール面の硬ある。(Means for Solving the Problems) The present invention has been proposed to solve these problems, and includes a method for repairing a pressure pipe sealing surface of a pressure tube type nuclear reactor. After performing mechanical repairs such as cutting and polishing on the seal surface, the surface of the mechanically repaired seal surface is hardened using CO2 laser light using a borescope type CO2 laser beam transmission device, and the surface of the seal surface is hardened using CO2 laser light. It's hard.
（作用）及び（発明の効果）
本発明においては前記したように、圧力管シール面に切
削、及び研摩等の機械的補修な施゛したのち、ボアスコ
ープ型Ｃ０２レーザー光伝送装置を使用して前記のよう
に機械的補修を施された圧力管シール面にＣＯ２レーザ
ー光を照射し、同圧力管シール面部分のみを表面硬化、
焼入れを行うことのできるようにしたものであり、機械
的補修後の圧力管シール面の硬さを増大し、耐蝕性を向
上しうるものである。(Function) and (Effects of the Invention) As described above, in the present invention, after performing mechanical repairs such as cutting and polishing on the pressure pipe seal surface, a borescope type C02 laser beam transmission device is used. The pressure pipe seal surface that has been mechanically repaired as described above is irradiated with CO2 laser light, and only the pressure pipe seal surface portion is surface hardened.
It can be hardened, increasing the hardness of the pressure pipe sealing surface after mechanical repair, and improving corrosion resistance.
本発明によればこのように圧力管シール面の品質が向上
し、シール性能の耐久性が増大し、圧力管シール面の補
修間隔が長くなり、原子力発電所の稼動率が向上するも
のである。According to the present invention, the quality of the pressure pipe seal surface is improved, the durability of the seal performance is increased, the repair interval of the pressure pipe seal surface is lengthened, and the operating rate of nuclear power plants is improved. .
（実施例） 以下本発明を図示の実施例について説明する。(Example) The present invention will be described below with reference to the illustrated embodiments.
第１図に示すようにＣＯ２レーザー発振器０１）を原子
炉本体（１２の下部に設置し、ＣＯ２レーザー伝送装置
本体（Ｉｎ伸長し、同本体（１：１の頂部を圧力管シー
ル部（１４）内に挿入する。As shown in Figure 1, the CO2 laser oscillator 01) is installed at the bottom of the reactor body (12), the CO2 laser transmission device body (In) is extended, and the top of the same body (1:1) is installed at the bottom of the reactor body (12). Insert inside.
次いで第２図に示すようにＣＯ２レ一ザー伝送装置本体
（１３）の頂部より照射するＣ０２レーザー光０５１の
照射位置が圧力管シール面（１６）になるように前記Ｃ
Ｏ２レーザー伝送装置本体（１３１の長さを調整する。Next, as shown in FIG. 2, the C02 laser beam 051 irradiated from the top of the CO2 laser transmission device main body (13) is irradiated with the pressure pipe sealing surface (16).
Adjust the length of the O2 laser transmission device body (131).
調整後、同Ｃ０２レーザー伝送装置本体（１１の頂部を
回転しなからＣ０２レーザー発振器０１）を作動させ。After adjustment, operate the C02 laser transmission device main body (C02 laser oscillator 01 by rotating the top of 11).
圧力管シール面ＯｅにＣＯ２レーザー光（１５１を照射
して表面硬化焼入れを行なう。The pressure tube sealing surface Oe is irradiated with CO2 laser light (151) to perform surface hardening and quenching.
図中０η（１８４マ夫々ＣＯ２レ一ザー光用反射鏡及び
Ｃ０２レーザー光用レンズである。In the figure, 0η (184 mm) are a reflector for CO2 laser light and a lens for CO2 laser light, respectively.
前記実施例の方法によれば、原子炉本体（１１５直下で
切削、研摩補修後の圧力管シール面０６１部分のみの表
面硬化焼入れが行なわれ、同圧力管シール面（ＩＩの硬
度が増大し、耐蝕性が向上し、同圧力管シール面０ｅの
品質が改善され、シール性能の耐久性が増大し、圧力管
シール面ＯＱの補修間隔が長くなり、原子力発電所の稼
動率が向上する。According to the method of the above embodiment, surface hardening is performed only on the pressure tube sealing surface 061 portion after cutting and polishing repair immediately below the reactor body (115), and the hardness of the pressure tube sealing surface (II is increased, The corrosion resistance is improved, the quality of the pressure pipe sealing surface Oe is improved, the durability of the sealing performance is increased, the repair interval of the pressure pipe sealing surface OQ is lengthened, and the operating rate of the nuclear power plant is improved.
以上本発明を実施例について説明したが、本発明は勿論
このような実施例にだけ局限されるものではな′ぐ、本
発明の精神を逸脱しない範囲内で種々の設計の改変を施
しうるものである。Although the present invention has been described above with reference to embodiments, the present invention is of course not limited to these embodiments, and may be modified in various ways without departing from the spirit of the present invention. It is.
第１図は本発明に係る圧力管型原子炉の圧力管シール面
補修方洗の一実施例の実施状況を示す一部縦断正面図、
第２図はその要部拡大図、第３図は圧力管型原子炉にお
ける圧力管シール部分の縦断面図である。
（１１）・・・Ｃ０２レーザー発振器、０２・・・原子
炉本体、（１３）・・・ＣＯ２レーザー伝送装置本体、
（１カ・・圧力管シール部、（１最・・・ＣＯ２レーザ
ー元、Ｏｅ・・・圧力管シール面第３０FIG. 1 is a partially vertical front view showing the implementation status of an embodiment of pressure tube seal surface repair and cleaning of a pressure tube nuclear reactor according to the present invention;
FIG. 2 is an enlarged view of the main part thereof, and FIG. 3 is a longitudinal sectional view of the pressure tube seal portion in the pressure tube reactor. (11)...C02 laser oscillator, 02...nuclear reactor body, (13)...CO2 laser transmission device body,
(1) Pressure pipe sealing part, (1st... CO2 laser source, Oe... Pressure pipe sealing surface No. 30
Claims (1)
て、前記圧力管シール面に切削及び研摩等の機械的補修
を施したのち、ボアスコープ型ＣＯ＿２レーザー光伝送
装置を使用して機械的補修された前記シール面にＣＯ＿
２レーザー光により表面焼入れを施し、同シール面の硬
さ及び耐蝕性を向上させることを特徴とする圧力管型原
子炉の圧力管シール面補修方法。In a method for repairing a pressure tube sealing surface of a pressure tube nuclear reactor, the pressure tube sealing surface is mechanically repaired by cutting and polishing, and then mechanically repaired using a borescope type CO_2 laser beam transmission device. CO_
2. A method for repairing a pressure tube seal surface of a pressure tube nuclear reactor, characterized by surface hardening with laser light to improve the hardness and corrosion resistance of the seal surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59221148A JPS6199890A (en) | 1984-10-23 | 1984-10-23 | Method of repairing sealing surface of pressure tube for pressure tube type reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59221148A JPS6199890A (en) | 1984-10-23 | 1984-10-23 | Method of repairing sealing surface of pressure tube for pressure tube type reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6199890A true JPS6199890A (en) | 1986-05-17 |
Family
ID=16762214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59221148A Pending JPS6199890A (en) | 1984-10-23 | 1984-10-23 | Method of repairing sealing surface of pressure tube for pressure tube type reactor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6199890A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107378276A (en) * | 2017-08-02 | 2017-11-24 | 中国科学院光电研究院 | A kind of laser repairing and the method for polishing ceramic part |
-
1984
- 1984-10-23 JP JP59221148A patent/JPS6199890A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107378276A (en) * | 2017-08-02 | 2017-11-24 | 中国科学院光电研究院 | A kind of laser repairing and the method for polishing ceramic part |
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