JP2502049B2 - Liquid contact prevention member - Google Patents
Liquid contact prevention memberInfo
- Publication number
- JP2502049B2 JP2502049B2 JP60034465A JP3446585A JP2502049B2 JP 2502049 B2 JP2502049 B2 JP 2502049B2 JP 60034465 A JP60034465 A JP 60034465A JP 3446585 A JP3446585 A JP 3446585A JP 2502049 B2 JP2502049 B2 JP 2502049B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid contact
- prevention member
- reactor vessel
- contact prevention
- flange surface
- 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.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/16—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings the coating being in the form of a bandage
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Adhesive Tapes (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は原子炉容器の鋼板製フランジ面の液接触防止
部材に関するものである。Description: TECHNICAL FIELD The present invention relates to a liquid contact prevention member for a steel plate flange surface of a reactor vessel.
（従来の技術） 従来の加圧水型原子炉を第３図、第４図に示すよう
に、（１）が炭素鋼製の原子炉容器、（３）がフランジ
面、（４）がシールリング、（５）がコンクリート壁で
あり、原子炉容器蓋（２）を締めるためにスッタドボル
ト（６）が原子炉容器（１）に設けられている。そして
フランジ面（３）には腐蝕を防止するために、樹脂ライ
ニング、ゴムライニング、塗料によるコーティング等が
施されている。(Prior Art) As shown in FIGS. 3 and 4, a conventional pressurized water reactor is shown in FIG. 3, where (1) is a carbon steel reactor vessel, (3) is a flange surface, and (4) is a seal ring. (5) is a concrete wall, and a stud bolt (6) is provided in the reactor vessel (1) for fastening the reactor vessel lid (2). The flange surface (3) is coated with a resin lining, a rubber lining, a coating with paint, etc. to prevent corrosion.
（発明が解決しようとする問題点） 前記第３図、第４図に示す加圧水型原子炉では、定期
点検時の燃料取出及び装荷時に、（キャビティ水張り期
間中に）鋼板製のフランジ面（３）がほう酸水溶液に曝
されるため、前面に赤錆が発生し、この赤錆の一部が原
子炉容器（１）に流入し、原子力プラントの品質管理上
問題視されている。また燃料装架後のキャビティ水抜き
後、フランジ面（３）に発生した赤錆の除去に多くの作
業員と作業時間とを必要としていた。(Problems to be Solved by the Invention) In the pressurized water reactor shown in FIG. 3 and FIG. 4, when the fuel is taken out and loaded at the time of regular inspection, the flange surface (3 ) Is exposed to a boric acid aqueous solution, red rust occurs on the front surface, and a part of this red rust flows into the reactor vessel (1), which is regarded as a problem in the quality control of the nuclear power plant. Further, after draining the cavity after mounting the fuel, many workers and a lot of working time are required to remove the red rust generated on the flange surface (3).
（問題点を解決するための手段） 本発明は前記の問題点に対処するもので、200μ以上
の厚さで適度の柔軟性と機械的強度を有するプラスチッ
クフィルムの片面に低融点金属と水溶性成分を含まない
再剥離性粘着剤を塗布し、防錆面との密着性と剥離性を
向上させたことを特徴とする。(Means for Solving Problems) The present invention addresses the above problems, and a low melting point metal and water-soluble material are provided on one surface of a plastic film having a thickness of 200 μ or more and having appropriate flexibility and mechanical strength. It is characterized in that a removable pressure-sensitive adhesive containing no components is applied to improve the adhesion to the rustproof surface and the releasability.
（作用） そしてプラスチックフィルムは200μ以上の厚さとす
ることによりフィルムを貼り付けたり剥がしたりするこ
とができる適度の柔軟性と、フィルムを剥がすとき手で
引張っても破れない適度の機械的強度を有し、又低融点
金属と水溶性成分を含まない再剥離性粘着剤は厳しく管
理されている加圧水原子炉の一次冷却水のように基準
値、制限値で規定されている成分以外の不純物が混入す
ることのない要求を満たし、更にその再剥離性は粘着テ
ープを原子炉容器のフランジ面に貼り付け原子炉キャビ
ティ内を一定期間水没させ排水した後人か手で引張って
剥ぐことを可能とする。(Function) The plastic film has a thickness of 200 μm or more, so that it has appropriate flexibility to allow the film to be attached or peeled off, and has adequate mechanical strength so that it will not break even if pulled by hand when peeling off the film. In addition, low-melting-point metal and removable adhesive that does not contain water-soluble components contain impurities other than those specified by the standard and limit values, such as pressurized water reactor primary cooling water that is strictly controlled. In addition, the removability makes it possible to attach the adhesive tape to the flange surface of the reactor vessel and submerge it in the reactor cavity for a certain period of time, drain it, and then pull it off manually or by hand. .
（実施例） 次に本発明の液接触防止部材を第１図及び第２図に示
す実施例により説明すると、（７）が液接触防止部材
で、同液接触防止部材（７）は、プラスチックフィルム
の片面に再剥離性粘着剤を塗布して構成する。同プラス
チックフィルムは、低融点金属Zu,Su,Sb,Pb等と水溶性
成分（ハロゲン元素、硫酸根等）とを含まないプラスチ
ック材料、即ち、再剥離性粘着剤に対して親和性のよい
ポリエチレン、ポリプロピレン、ポリエステル、ポリウ
レタン、ポリアミド等のプラスチック材料により構成さ
れ、特にポリエチレン、ポリプロピレン、ポリエステル
を使用するときには、プラスチックフィルムの片面に、
コロナ処理、プラズマ処理、フレーム処理、化学処理等
の粘着剤に対する親和性増強のための表面処理を行う。
また同プラスチックフィルムには、適度の柔軟性があ
り、再剥離時の引張力に耐える機械的強度を有してい
る。(Example) Next, the liquid contact preventing member of the present invention will be described with reference to the embodiment shown in FIGS. 1 and 2. (7) is a liquid contact preventing member, and the liquid contact preventing member (7) is a plastic. It is constructed by applying a removable adhesive on one surface of the film. The plastic film is a plastic material that does not contain low-melting-point metals Zu, Su, Sb, Pb, etc. and water-soluble components (halogen elements, sulfate radicals, etc.), that is, polyethylene that has a good affinity for removable adhesives. , Polypropylene, polyester, polyurethane, polyamide and other plastic materials, especially when polyethylene, polypropylene, polyester is used, on one side of the plastic film,
Surface treatment such as corona treatment, plasma treatment, flame treatment, and chemical treatment for enhancing the affinity for the adhesive is performed.
In addition, the plastic film has appropriate flexibility and has mechanical strength capable of withstanding the tensile force during re-peeling.
また再剥離性粘着剤は、前記の低融点金属と前記の水
溶性成分とを含まないアクリル系、ウレタン系、ゴム系
粘着剤よりなり、鋼板との密着性が充分あって、前記の
ほう酸水溶液が浸透しなくて、再剥離性を有するもので
ある。The removable adhesive is made of an acrylic, urethane, or rubber adhesive that does not contain the low-melting-point metal and the water-soluble component, and has sufficient adhesiveness with a steel sheet, and the boric acid aqueous solution. Does not penetrate and has removability.
第１図、第２図に示す一実施例では、長さ（L1）の液
接触防止部材（７）を原子炉容器（１）のフランジ面
（３）に貼付し、ハンドローラ等により加圧密着させ、
次いで長さ（L2）（L3）……の液接触防止部材（７）を
ラップ（ｌ）させて、次々に貼付する。この際のラップ
（ｌ）量は、100mm程度が好ましい。In one embodiment shown in FIG. 1 and FIG. 2, a liquid contact prevention member (7) having a length (L 1 ) is attached to the flange surface (3) of the reactor vessel (1) and applied with a hand roller or the like. Pressure close contact,
Then, the liquid contact prevention member (7) having a length (L 2 ) (L 3 ) ... is lapped (1) and attached one after another. The amount of lap (l) at this time is preferably about 100 mm.
次に本発明の液接触防止部材の作用を説明すると、液
接触防止部材（７）はプラスチックフィルムと粘着剤と
で構成されているため、ピンホールが皆無であり、柔軟
性があり所要表面に密着するので、同粘着剤が介して所
要表面に貼付けるのみで、十分な防蝕性を得られる。ま
た原子力プラントにおける原子炉容器（１）の場合プラ
ント運転時には、液接触防止部材（７）を取除く必要が
あるが、粘着剤があり、その再剥離性を利用して、簡易
に剥離する。Next, the operation of the liquid contact prevention member of the present invention will be described. Since the liquid contact prevention member (7) is composed of a plastic film and an adhesive, it has no pinholes, has flexibility, and has a required surface. Since they are in close contact with each other, sufficient corrosion resistance can be obtained simply by sticking them to the required surface via the adhesive. Further, in the case of a reactor vessel (1) in a nuclear power plant, it is necessary to remove the liquid contact prevention member (7) at the time of plant operation, but there is an adhesive, and it is easily peeled off by utilizing its removability.
（発明の効果） 本発明の液接触防止部材は、200μ以上の厚さで適度
の柔軟性と機械的強度を有するプラスチックフィルムの
片面に低融点金属と水溶性成分を含まない再剥離性粘着
剤を塗布し防錆面との密着性と剥離性を向上させたこと
により、次の効果を有する。(Effect of the invention) The liquid contact prevention member of the present invention is a removable adhesive which does not contain a low melting point metal and a water-soluble component on one surface of a plastic film having a thickness of 200 μm or more and having appropriate flexibility and mechanical strength. Is applied to improve the adhesion to the rust preventive surface and the releasability, the following effects can be obtained.
（イ）防錆面に対する貼付けが容易で、且つ信頼性の高
い防錆効果が得られる。(A) It is easy to attach to the rust preventive surface and has a highly reliable rust preventive effect.
（ロ）剥離のためにフィルムを引張しても破損すること
なく、剥離が容易であり、作業性が高い。(B) Even if the film is pulled for peeling, the film is not damaged, and peeling is easy, and workability is high.
以上本発明を実施例について説明したが、勿論本発明
はこのような実施例にだけ極限されるものではなく、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 with reference to the embodiments, the present invention is, of course, not limited to such embodiments, and various design modifications can be made without departing from the spirit of the present invention. .
第１図は本発明の液接触防止部材の一実施例を示す縦断
面側面図、第２図は第１図のＡ視図、第３図は原子炉容
器の縦断面側面図、第４図は第３図Ｂ部の拡大図であ
る。 （７）…液接触防止部材。FIG. 1 is a vertical cross-sectional side view showing an embodiment of the liquid contact prevention member of the present invention, FIG. 2 is a view from A of FIG. 1, FIG. 3 is a vertical cross-sectional side view of a reactor vessel, and FIG. [Fig. 3] is an enlarged view of part B in Fig. 3. (7) ... Liquid contact prevention member.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 野口 繁 高砂市荒井町新浜２丁目１番１号 三菱 重工業株式会社高砂研究所内 (72)発明者 本蔵 照男 高砂市荒井町新浜２丁目１番１号 三菱 重工業株式会社高砂研究所内 (72)発明者 行政 忠夫 神戸市兵庫区和田崎町１丁目１番１号 三菱重工業株式会社神戸造船所内 (72)発明者 山田 満善 神戸市兵庫区和田崎町１丁目１番１号 三菱重工業株式会社神戸造船所内 (72)発明者 吉村 徹治 魚津市本新751番地 日本カーバイド工 業株式会社魚津研究所内 (56)参考文献 特開 昭55−29509（ＪＰ，Ａ) 特開 昭54−46282（ＪＰ，Ａ) 特開 昭53−7739（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Shigeru Noguchi 1-1-1 Niihama, Arai-cho, Takasago-shi Takasago Research Laboratory, Mitsubishi Heavy Industries (72) Inventor Teruo 2-1-1, Niihama, Arai-cho, Takasago-shi Mitsubishi Takasago Research Institute, Heavy Industry Co., Ltd. (72) 1-1, Wadazakicho, Hyogo-ku, Kobe City, Inventor Administration 1-1, Kobe Shipyard, Mitsubishi Heavy Industries, Ltd. (72) Mitsunori Yamada, 1-chome, Wadazakicho, Hyogo-ku, Kobe City No. 1-1 Mitsubishi Heavy Industries, Ltd. Kobe Shipyard (72) Inventor Tetsuji Yoshimura 751 Honshin, Uozu City Uozu Research Institute, Japan Carbide Industry Co., Ltd. (56) Reference JP-A-55-29509 (JP, A) Special Kai 54-46282 (JP, A) JP-A-53-7739 (JP, A)
Claims (1)
上の厚さで適度の柔軟性と機械的強度を有するプラスチ
ックフィルムの片面に低融点金属と水溶性成分を含まな
い再剥離性粘着剤を塗布し、防錆面との密着性と剥離性
を向上させたことを特徴とする原子炉容器の鋼板製フラ
ンジ面の液接触防止部材。1. A releasable pressure-sensitive adhesive containing a low melting point metal and a water-soluble component on one surface of a plastic film having a thickness of 200 μ or more and a moderate flexibility and mechanical strength on a flange surface made of a steel plate of a reactor vessel. Is applied to improve the adhesion and the peeling property to the rust preventive surface, and the liquid contact preventing member for the steel plate flange surface of the reactor vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60034465A JP2502049B2 (en) | 1985-02-25 | 1985-02-25 | Liquid contact prevention member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60034465A JP2502049B2 (en) | 1985-02-25 | 1985-02-25 | Liquid contact prevention member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61195180A JPS61195180A (en) | 1986-08-29 |
| JP2502049B2 true JP2502049B2 (en) | 1996-05-29 |
Family
ID=12414997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60034465A Expired - Lifetime JP2502049B2 (en) | 1985-02-25 | 1985-02-25 | Liquid contact prevention member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2502049B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115463952A (en) * | 2021-06-11 | 2022-12-13 | 华南师范大学 | Method for promoting conversion of waste plastics to secondary carbon source |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5529509A (en) * | 1978-08-21 | 1980-03-01 | Nippon Kako Seishi Kk | Releasable corrosion-proof adhesive tape or sheet |
-
1985
- 1985-02-25 JP JP60034465A patent/JP2502049B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61195180A (en) | 1986-08-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |