JPH0249596Y2 - - Google Patents
Info
- Publication number
- JPH0249596Y2 JPH0249596Y2 JP1983119806U JP11980683U JPH0249596Y2 JP H0249596 Y2 JPH0249596 Y2 JP H0249596Y2 JP 1983119806 U JP1983119806 U JP 1983119806U JP 11980683 U JP11980683 U JP 11980683U JP H0249596 Y2 JPH0249596 Y2 JP H0249596Y2
- Authority
- JP
- Japan
- Prior art keywords
- sodium
- internal structure
- repair
- equipment
- naoh
- 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
Links
- 230000008439 repair process Effects 0.000 claims description 33
- 239000012530 fluid Substances 0.000 claims description 11
- 229910052783 alkali metal Inorganic materials 0.000 claims description 7
- 150000001340 alkali metals Chemical class 0.000 claims description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 78
- 239000011734 sodium Substances 0.000 description 42
- 229910052708 sodium Inorganic materials 0.000 description 30
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 27
- 238000006243 chemical reaction Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 14
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 8
- 229920002554 vinyl polymer Polymers 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 150000003385 sodium Chemical class 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 230000008651 alkaline stress Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 210000003928 nasal cavity Anatomy 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
- Working Measures On Existing Buildindgs (AREA)
Description
【考案の詳細な説明】
〔本考案の技術分野〕
本考案は、ナトリウム、カリウム、リチウム等
のアルカリ金属を作動流体とする機器の内部構造
物を補修するための装置に関する。特に、本考案
は、ナトリウム冷却高速増殖炉プラントのナトリ
ウム機器及び実験用ナトリウムループのナトリウ
ム機器などのナトリウムを作動流体とする機器の
内部構造物を補修するための装置に関する。[Detailed Description of the Invention] [Technical Field of the Present Invention] The present invention relates to an apparatus for repairing the internal structure of equipment using an alkali metal such as sodium, potassium, or lithium as a working fluid. In particular, the present invention relates to an apparatus for repairing internal structures of equipment that uses sodium as a working fluid, such as sodium equipment in a sodium-cooled fast breeder reactor plant and sodium equipment in an experimental sodium loop.
ナトリウムを作動流体とする機器の内部構造物
を補修するような場合、従来、機器内部に付着し
たナトリウムを完全に洗浄してから補修作業する
方法と、全く洗浄を行なわないで補修する方法が
ある。
When repairing the internal structure of equipment that uses sodium as a working fluid, there are two conventional methods: one is to completely clean the sodium that has adhered to the inside of the equipment before repair work, and the other is to repair the equipment without cleaning it at all. .
前者のように洗浄を行なう場合には、ナトリウ
ムが除去されてしまうので、内部の補修作業は何
の危険も問題もなく実施できるが、洗浄するプロ
セスに多大の期間と労苦を要する。すなわち、洗
浄するまでのプロセスは、まず最初に機器の内部
構造物を空気に触れさせずに抜き出した後、湿潤
窒素ガスにさらしてナトリウムを徐々に潮解させ
ていきNaOHに変えていく。このようにする理
由は以下の通りである。ナトリウムが反応して最
終的にNaOHに変わる過程や、NaOHが潮解し
NaOH水溶液に変わる過程で反応熱が生ずるの
で余り急激に反応させると温度が上昇しすぎる。
温度が上昇し、かつNaOH溶液環境に構造物が
さらされるとアルカリ腐食による割れに至る危険
性があり、基本的にはNaOHに変わる場合の反
応もゆつくり生じさせることが必要となる。さら
に急激な反応となるとNaOHが湿分と反応する
際に水素ガスが発生し、水素濃度が爆発限界を越
える恐れがある為、この面からも反応をゆつくり
生じさせる必要があり、これに適した湿潤窒素ガ
ス法が良く用いられる。その後、構造物を純水に
浸漬し、NaOHを洗い流す。このようにNaOH
を洗い流した後においても構造物の片すみに
NaOH溶液が残留することを考慮し、CO2ガスに
曝すことによりNaOH溶液を無害な炭酸ソーダ
Na2CO3に変えてしまう。このプロセスを安定化
処理とよんでいるが、この安定化処理が完了し、
初めて大気に爆露される。これで補修作業が行な
えるようになるのであるが、このようにナトリウ
ムの洗浄にはかなりの煩雑なプロセスを経る必要
があり、多大の労苦と時間を要するものである。 In the case of cleaning as in the former case, since the sodium is removed, internal repair work can be carried out without any danger or problem, but the cleaning process requires a great deal of time and effort. In other words, the cleaning process involves first removing the internal structure of the device without exposing it to air, and then exposing it to wet nitrogen gas to gradually deliquify the sodium and turn it into NaOH. The reason for doing this is as follows. The process by which sodium reacts and ultimately turns into NaOH, and the process by which NaOH deliquesces.
Since reaction heat is generated during the process of converting into NaOH aqueous solution, the temperature will rise too much if the reaction is too rapid.
If the temperature rises and the structure is exposed to the NaOH solution environment, there is a risk of cracking due to alkali corrosion, and basically it is necessary to allow the reaction to change into NaOH to occur slowly. If the reaction is more rapid, hydrogen gas will be generated when NaOH reacts with moisture, and the hydrogen concentration may exceed the explosive limit.From this point of view as well, it is necessary to allow the reaction to occur slowly, and this method is suitable for this purpose. A wet nitrogen gas method is often used. The structure is then immersed in pure water to wash away the NaOH. Like this NaOH
Even after washing away the
Considering that the NaOH solution will remain, remove the NaOH solution with harmless soda by exposing it to CO2 gas.
It changes to Na 2 CO 3 . This process is called stabilization, and once this stabilization is complete,
exposed to the atmosphere for the first time. This allows repair work to be carried out, but cleaning the sodium in this way requires a fairly complicated process, which requires a great deal of effort and time.
一方、全く洗浄を行なわないで補修する場合で
は、既に述べてきたように大気中の酸素や湿分と
Naが急激に反応し、水素ガスの多量発生がある
ばかりでなく、構造物の温度が反応熱の為、上昇
し、NaOH溶液の存在と相まつてアルカリ腐食
環境にさらされることとなる。それに加え、補修
作業は人間が行なうので、構造物にNaOH溶液
が付着していたり、潮解NaOH溶液がたれ落ち
てきたりする環境は作業者にとつて危険この上な
いものとなる。 On the other hand, when repairing without cleaning at all, as mentioned above, the
Not only does Na react rapidly and a large amount of hydrogen gas is generated, but the temperature of the structure rises due to the heat of reaction, and combined with the presence of the NaOH solution, the structure is exposed to an alkaline corrosive environment. In addition, since repair work is carried out by humans, the environment where NaOH solution adheres to the structure or where deliquescent NaOH solution drips is extremely dangerous for workers.
以上述べてきたことを克服する一方法として
は、構造物を一切空気に触れさせずに補修する方
法が考えられる。例えば、ビニールキヤスクに構
造物を入れ、このビニールキヤスク内をN2ガス
又はArガスで満たしておき、一方、補修作業は、
このビニールキヤスクにゴムのグローブを装着し
ておき、一種のグローブボツクス中で作業を行う
手段が考えられる。この手段では構造物内のナト
リウムが反応しないので、この反応に伴なう問題
点は解消されるけれども、一方、補修作業は一種
のグローブボツクスの中での作業となるので、簡
単な作業しかできず、高度な作業は無理となる。
又、外部よりグローブを介して作業するので手の
届く範囲は限られ、大型の構造物になると内部の
補修は全くできなくなる。代案として自動化装置
すなわちロボツトを用いて補修作業することも考
えられるが、これには多くの開発費用、期間を要
することとなる。 One possible way to overcome the above-mentioned problems is to repair the structure without exposing it to air at all. For example, a structure is placed in a vinyl cask and the interior of the vinyl cask is filled with N2 gas or Ar gas, while repair work
One possible method is to attach rubber gloves to this vinyl cask and work in a type of glove box. This method eliminates the problems associated with this reaction because the sodium in the structure does not react, but on the other hand, repair work is carried out in a type of glove box, so only simple work can be done. Therefore, advanced work becomes impossible.
Furthermore, since the work is done from the outside through gloves, the reach is limited, and if the structure is large, it becomes impossible to repair the inside at all. As an alternative, repair work could be carried out using automated equipment, ie, robots, but this would require a lot of development cost and time.
本考案は、以上述べてきた欠点を克服し、アル
カリ金属を作動流体とする機器の内部構造物補修
に際し、構造物をアルカリ腐食環境にせず、水素
ガスの発生はほとんどなく、補修作業として極め
て高度なものだけ容易にでき、補修作業者が危険
な環境にさらされることなく、かつ機器補修期間
と労力を最小にするアルカリ金属を作動流体とす
る機器の内部構造物の補修装置を提供することを
目的とするものである。
The present invention overcomes the above-mentioned drawbacks, does not expose the structure to an alkali corrosive environment, generates almost no hydrogen gas, and is extremely advanced in repair work when repairing internal structures of devices that use alkali metals as working fluids. To provide a device for repairing internal structures of equipment using an alkali metal as a working fluid, which can be easily performed without exposing repair workers to a dangerous environment, and which minimizes equipment repair time and labor. This is the purpose.
そして、本考案は上記目的を達成する手段とし
て、補修装置内の雰囲気を循環系の乾燥空気と
し、この循環系に除湿装置を配設した点にある。
すなわち、本考案は、アルカリ金属を作動流体と
する機器の内部構造物を覆つたキヤスクからな
り、該キヤスク内の雰囲気を循環系の乾燥空気と
し、この循環系に除湿装置を配設したことを特徴
とするアルカリ金属を作動流体とする機器の内部
構造物の補修装置に関するものである。
The present invention, as a means to achieve the above object, consists in that the atmosphere inside the repair device is made of dry air in a circulating system, and a dehumidifier is disposed in this circulating system.
That is, the present invention consists of a cask that covers the internal structure of a device that uses an alkali metal as a working fluid, the atmosphere inside the cask is dry air in a circulation system, and a dehumidifier is installed in this circulation system. The present invention relates to a device for repairing internal structures of equipment using an alkali metal as a working fluid.
本考案は、ナトリウム、カリウム、リチウム等
のアルカリ金属を作動流体とする機器の内部構造
物を補修するための装置に関するものであるが、
以下本考案をナトリウム金属を用いた機器につい
て説明するけれども、本考案はこれのみに限定さ
れるものでない。 The present invention relates to a device for repairing the internal structure of equipment that uses alkali metals such as sodium, potassium, and lithium as working fluids.
Although the present invention will be described below with respect to a device using sodium metal, the present invention is not limited thereto.
本考案では、補修装置内の雰囲気を乾燥空気と
するものであり、この乾燥空気とは、水分を含ま
ぬか、又は水分濃度を極めて低く抑えた空気（ド
ライ空気）を意味するものである。このような空
気を使用する理由は次のとおりである。水分を含
まぬ空気にするとナトリウムは酸素との反応によ
り次式(1)，(2)に示すようにNa2O又はNa2O2の固
体反応生成物となる。 In the present invention, the atmosphere inside the repair device is dry air, and this dry air means air that does not contain moisture or has an extremely low moisture concentration (dry air). The reason for using such air is as follows. When the air contains no moisture, sodium reacts with oxygen to form a solid reaction product of Na 2 O or Na 2 O 2 as shown in the following formulas (1) and (2).
2Na＋1/2O2→Na2O ―(1)
2Na＋O2→Na2O2 ―(2)
固体の生成物はナトリウムの表面を保護皮膜の
ように覆うので、反応の進行は遅く、内部はナト
リウムのままである。したがつて復旧後のナトリ
ウムの不純物増加はさほど大きなものにはならな
い。水分をほとんど含まない空気にしているので
次に示すような反応はほとんど生じない。 2Na+1/2O 2 →Na 2 O ―(1) 2Na+O 2 →Na 2 O 2 ―(2) The solid product covers the surface of the sodium like a protective film, so the reaction progresses slowly and the inside is filled with sodium. It remains as it is. Therefore, the increase in sodium impurities after restoration will not be very large. Since the air contains almost no moisture, the following reactions hardly occur.
Na＋H2O→NaOH＋1/2H2 ―(3)
NaOH＋H2O→NaOH水溶液 ―(4)
Na2O＋H2O→2NaOH ―(5)
Na2O2＋H2O→2NaOH＋1/2O2 ―(6)
つまりNaOH又はNaOH水溶液環境にさらさ
れることはないので、アルカリ応力腐食に至る心
配はない。又、NaOHになると(4)式に示すよう
にNaOH水溶液に変つていくので、これがたれ
落ち、次うと新しい反応面が出るので反応の進行
が早いが水分がなければ以上のようなことは一切
ない。又、(1)，(2)の反応式から判るように水素ガ
ス発生の心配もない。さらに水分をほとんど含ま
ないと云えども空気であるので、作業者がビニー
キヤスク内に入つても酸欠で死亡することはあり
えず、補修箇所に直接接近して作業ができるので
かなり高度な補修、検査等の作業が可能となる。
なお、作業者自身からの水分放散を防止する為、
ウエツトスーツ等の特殊作業服の着用が必要であ
る。又、上述したように液状の反応生成物ができ
ないので、作業者にNaOH溶液がふりかかるよ
うな危険なことはない。但し、Na2OなりNa2O2
なりか万が一作業者の眼や口中、鼻腔に入ると(5)
や(6)の反応によりNaOHに変りうるので、念の
為、保護メガネ、防じんマスクの着用が望まし
い。そして最大の効果として、労力と期間を要す
る洗浄プロセスを省略できることから、補修作業
を極めて効率化できかつ補修費用の大きな節減に
なる。 Na＋H 2 O→NaOH+1/2H 2 ―(3) NaOH＋H 2 O→NaOH aqueous solution ―(4) Na 2 O＋H 2 O→2NaOH ―(5) Na 2 O 2 +H 2 O→2NaOH＋1/2O 2 ―(6) That is Since it is not exposed to NaOH or NaOH aqueous solution environments, there is no risk of alkaline stress corrosion. In addition, when NaOH becomes NaOH, it changes to NaOH aqueous solution as shown in equation (4), so this drips down, and next time a new reaction surface appears, so the reaction progresses quickly, but if there is no water, the above will not happen at all. do not have. Furthermore, as can be seen from the reaction equations (1) and (2), there is no need to worry about hydrogen gas generation. Furthermore, even though it contains almost no moisture, it is air, so even if a worker enters the vinyl cask, there is no chance of dying from lack of oxygen, and the work can be done directly close to the repair area, allowing for fairly sophisticated repairs and inspections. etc. becomes possible.
In addition, in order to prevent water dissipation from the worker himself,
It is necessary to wear special work clothing such as a wet suit. Furthermore, as mentioned above, since a liquid reaction product is not produced, there is no danger of the worker being splashed with the NaOH solution. However, Na 2 O is Na 2 O 2
If it gets into the eyes, mouth, or nasal cavity of the worker (5)
It can be converted to NaOH by reaction (6), so it is recommended to wear safety goggles and a dust mask just in case. The biggest effect is that the cleaning process, which requires labor and time, can be omitted, making repair work extremely efficient and resulting in significant savings in repair costs.
また、本考案において、乾燥空気にCO2ガスを
若干量混入させたものを使用するのが非常に好ま
しい。これは、何らかの操作ミス等で水分が誤ま
つて若干量混入した場合、NaOHの生成が少し
生ずることが避けられない。このときCO2が混入
されていればNaOHを次の反応式(7)により無害
のNa2CO3に変えていくので問題を除去できるか
らである。 Further, in the present invention, it is highly preferable to use dry air mixed with a small amount of CO 2 gas. This is because if a small amount of water is accidentally mixed in due to some kind of operational error, it is inevitable that a small amount of NaOH will be generated. This is because if CO 2 is mixed in at this time, the problem can be eliminated because NaOH is converted into harmless Na 2 CO 3 by the following reaction formula (7).
2NaOH＋CO2→Na2CO3＋H2O ―(7)
そして、本考案では、乾燥空気を循環系とし、
該循環系に除湿装置を配設したものであるから、
誤まつて混入した水分や上記反応式(7)で生成する
水分などはこの除湿装置により除去され、被補修
物である内部構造物は常に乾燥空気と接すること
となる。したがつて、本考案により、ナトリウム
の付着した内部構造物を有する機器の、その構造
物の補修において、内部構造物をビニールなどの
キヤスクで覆い、そのキヤスクの内部ガスとして
水分を含まぬか、又は水分濃度を極めて低く抑え
た空気すなわち、乾燥空気で満たし、このキヤス
ク内で補修作業をすることができるものである。 2NaOH＋CO 2 →Na 2 CO 3 +H 2 O ―(7) And in this invention, dry air is used as a circulation system,
Since a dehumidifier is installed in the circulation system,
This dehumidifier removes moisture accidentally mixed in or generated in reaction formula (7) above, and the internal structure to be repaired is always in contact with dry air. Therefore, according to the present invention, when repairing the structure of a device having an internal structure contaminated with sodium, the internal structure is covered with a cask made of vinyl or the like, and the gas inside the cask does not contain moisture, or The cask is filled with air with an extremely low moisture concentration, that is, dry air, and repair work can be carried out inside the cask.
以上本考案を詳細に説明したが、第１〜４図に
基づいて本考案をより詳細に説明する。第１図は
本考案の実施例であるナトリウム機器の内部構造
物の補修装置である。この補修装置は、内部構造
物２がビニールキヤスク１で覆われており、この
キヤスク１には密閉型ブロア８及び除湿装置９を
含む循環系１０が取付けられているものである。
そして、このキヤスク１内の雰囲気は乾燥空気、
特に好ましくはCO2含有の乾燥空気からなり、こ
の空気は上記循環系１０を常に循環しているもの
である。そして、このような補修装置内で作業者
１１がナトリウム機器の内部構造２の補修ないし
は検査作業を行う。 Although the present invention has been described in detail above, the present invention will be explained in more detail based on FIGS. 1 to 4. FIG. 1 shows a repair device for the internal structure of a sodium equipment, which is an embodiment of the present invention. In this repair device, an internal structure 2 is covered with a vinyl cask 1, and a circulation system 10 including a hermetic blower 8 and a dehumidifier 9 is attached to the cask 1.
The atmosphere inside this cask 1 is dry air.
Particularly preferred is dry air containing CO 2 , which is constantly circulated through the circulation system 10 . Then, the operator 11 performs repair or inspection work on the internal structure 2 of the sodium equipment within such a repair device.
この内部構造物２を補修ないしは検査する際
に、ナトリウム機器から、その内部構造物２を抜
き出す手順を第２〜４図に基づいて説明する。第
２図はナトリウム機器の断面図であり、４はナト
リウム機器本体、２は内部構造物、５はフランジ
であり、このフランジ５を外すことにより内部構
造物２を抜き出せるようになつている。今、内部
構造物２を検査又は補修したいとき、まずドレン
ノズル６よりNaをドレンする。ドレンしても構
造物すきま部等にナトリウムが残在する。冷却固
化後、第３図に示すようにフランジ５付内部構造
物２をビニールキヤスク１で覆い、この中に窒素
ガス又はArガスで満たし、ループ側のナトリウ
ムを汚染せぬように配慮しつつ内部構造物２を抜
き出す。そして、内部構造物２を上まで引抜く
と、第４図に示すようにシヤツタ７で内部構造物
と胴６とを縁切りし、内部構造物２を補修作業す
る位置に移送する。移送後、前記したように第１
図に示す補修装置内に作業者１１が入り、補修作
業を行うものである。 The procedure for extracting the internal structure 2 from the sodium equipment when repairing or inspecting the internal structure 2 will be explained based on FIGS. 2 to 4. FIG. 2 is a cross-sectional view of the sodium equipment, where 4 is the sodium equipment main body, 2 is the internal structure, and 5 is a flange. By removing the flange 5, the internal structure 2 can be extracted. Now, when it is desired to inspect or repair the internal structure 2, first drain Na from the drain nozzle 6. Even after draining, sodium remains in the gaps in the structure. After cooling and solidifying, as shown in Fig. 3, the internal structure 2 with the flange 5 is covered with a vinyl cask 1, and this is filled with nitrogen gas or Ar gas, taking care not to contaminate the sodium on the loop side. Pull out the internal structure 2. Then, when the internal structure 2 is pulled out to the top, the internal structure and the shell 6 are cut off by the shutter 7 as shown in FIG. 4, and the internal structure 2 is transported to a position where repair work is to be performed. After the transfer, the first
A worker 11 enters the repair apparatus shown in the figure and performs repair work.
本考案は、以上詳記したような構成からなるも
のであるから、ナトリウム金属を作動流体とする
機器の内部構造物の補修に際し、該構造物をアル
カリ腐食環境にせず、水素ガスの発生はほとんど
なく、また、補修作業者が危険な環境にさらされ
ることなく、安全に補修できる顕著な効果が生ず
るものである。
Since the present invention has the configuration described in detail above, when repairing the internal structure of equipment that uses sodium metal as the working fluid, the structure is not exposed to an alkaline corrosive environment and almost no hydrogen gas is generated. Moreover, it has the remarkable effect of allowing repair workers to perform repairs safely without being exposed to a dangerous environment.
第１図は本考案の実施例であるナトリウム機器
の内部構造物の補修装置である。第２図はナトリ
ウム機器の断面図であり、第２図は該機器の内部
構造物を抜き出す場合を説明するための図であ
り、第３図はこの内部構造物を抜き出した状態を
示す図、第４図は抜出後に内部構造と胴を縁切り
した状態を示す図である。
１……ビニールキヤスク、２……内部構造物、
３……ドレンノズル、４……ナトリウム機器本
体、５……フランジ、６……胴、７……シヤツ
タ、８……密閉型ブロア、９……除湿装置、１０
……循環系、１１……作業者。
FIG. 1 shows a repair device for the internal structure of a sodium equipment, which is an embodiment of the present invention. Fig. 2 is a cross-sectional view of the sodium equipment, Fig. 2 is a diagram for explaining the case where the internal structure of the equipment is extracted, and Fig. 3 is a diagram showing the state in which the internal structure is extracted. FIG. 4 is a diagram showing a state in which the internal structure and the body have been cut off after being extracted. 1... Vinyl cask, 2... Internal structure,
3... Drain nozzle, 4... Sodium equipment body, 5... Flange, 6... Body, 7... Shutter, 8... Closed type blower, 9... Dehumidifier, 10
...Circulatory system, 11...Worker.
Claims (1)
物を覆つたキヤスクからなり、該キヤスク内の雰
囲気を循環系の乾燥空気とし、この循環系に除湿
装置を配設したことを特徴とするアルカリ金属を
作動流体とする機器の内部構造物の補修装置。 It consists of a cask that covers the internal structure of a device that uses an alkali metal as a working fluid, the atmosphere inside the cask is made of dry air in a circulation system, and a dehumidifier is installed in this circulation system. A repair device for the internal structure of equipment that uses working fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983119806U JPS6027398U (en) | 1983-08-02 | 1983-08-02 | Repair device for the internal structure of equipment that uses alkali metal as a working fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983119806U JPS6027398U (en) | 1983-08-02 | 1983-08-02 | Repair device for the internal structure of equipment that uses alkali metal as a working fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6027398U JPS6027398U (en) | 1985-02-23 |
| JPH0249596Y2 true JPH0249596Y2 (en) | 1990-12-27 |
Family
ID=30274818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1983119806U Granted JPS6027398U (en) | 1983-08-02 | 1983-08-02 | Repair device for the internal structure of equipment that uses alkali metal as a working fluid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6027398U (en) |
-
1983
- 1983-08-02 JP JP1983119806U patent/JPS6027398U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6027398U (en) | 1985-02-23 |
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