JPH0715518B2 - How to dismantle and remove equipment that contains radioactive waste oil, etc. - Google Patents
How to dismantle and remove equipment that contains radioactive waste oil, etc.Info
- Publication number
- JPH0715518B2 JPH0715518B2 JP15751189A JP15751189A JPH0715518B2 JP H0715518 B2 JPH0715518 B2 JP H0715518B2 JP 15751189 A JP15751189 A JP 15751189A JP 15751189 A JP15751189 A JP 15751189A JP H0715518 B2 JPH0715518 B2 JP H0715518B2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- equipment
- waste oil
- waste
- coagulant
- 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 - Fee Related
Links
Landscapes
- Processing Of Solid Wastes (AREA)
Description
この発明は、放射性物質を取り扱う諸施設で使用され、
放射性廃油や廃溶剤を内部に含んでいる各種機器を、安
全かつ効率よく解体あるいは撤去するための方法に関す
るものである。This invention is used in various facilities that handle radioactive materials,
The present invention relates to a method for safely and efficiently dismantling or removing various kinds of equipment containing radioactive waste oil or waste solvent inside.
放射性物質を取り扱う管理区域内で使用した各種の設備
機器のうち、内部に放射性廃油や放射性廃溶剤（以下こ
れらを総称して単に“廃油”という）を含んでいる機器
を解体・撤去するに際しては、機器内部から排出させた
放射性廃油からなる放射性液体廃棄物と、機器の解体撤
去部品からなる放射性固体（廃棄）物とに分けてそれぞ
れ処理する必要がある。しかしながら、機器内部の放射
性廃油を完全に排出させることは難しく、特に複雑な内
部構造や内部形状を有する機器においては、排出し得な
いかなりの量の放射性廃油が残留することになる。When dismantling or removing equipment that contains radioactive waste oil or radioactive waste solvent (hereinafter collectively referred to simply as "waste oil") among the various equipment used in the controlled area handling radioactive substances It is necessary to separately treat radioactive liquid waste consisting of radioactive waste oil discharged from the inside of the equipment and radioactive solid (waste) waste consisting of dismantled parts of the equipment. However, it is difficult to completely discharge the radioactive waste oil inside the device, and particularly in a device having a complicated internal structure or internal shape, a considerable amount of radioactive waste oil that cannot be discharged remains.
排出し得ない放射性廃油を内部に含んでいるかような機
器を解体・撤去しようとする場合には、機器の構成部品
ごとに解体し、放射性廃油を除去した後に整備あるいは
廃棄する。この作業は放射性汚染を拡げる危険性を有す
るばかりでなく、放射線管理区域での作業時間を長引か
せる原因となっている。 そこでこの発明は、排出困難な放射性廃油が内部に残留
しているような機器の解体・撤去時に、放射性廃油が解
体機器から漏洩して、放射性汚染が拡大するのを防止で
き、特に撤去作業に際して解体作業を無くすことで作業
時間を短縮し被曝低減を図ることができる解体・撤去方
法を提供することを目的としてなされたものである。When attempting to dismantle or remove equipment that contains radioactive waste oil that cannot be discharged, dismantle each component part of the equipment, remove the radioactive waste oil, and then carry out maintenance or disposal. This work not only has the risk of spreading radioactive contamination, but also prolongs the working time in radiation controlled areas. Therefore, the present invention can prevent the radioactive waste oil from leaking from the dismantling equipment and spreading radioactive contamination when dismantling / removing the equipment in which radioactive waste oil that is difficult to discharge remains inside, especially when removing the equipment. The object of the present invention is to provide a dismantling / removing method that can shorten the working time and reduce the radiation exposure by eliminating the dismantling work.
すなわちこの発明による放射性廃油等を含む機器の解体
・撤去方法は、放射性廃油及び／又は廃溶剤を含む機器
を解体撤去するに際し、ポリノルボーネンからなる油凝
固剤を前記機器内に投入して機器内の廃油及び／又は廃
溶剤を固化した後、前記機器を解体・撤去することを特
徴とするものである。 油凝固剤としては、ノルボーネンの開環重合により生成
されるポリノルボーネンからなる油凝固剤を使用する。
かような油凝固剤は例えば「カクタスオイルハードナー
TFN-2」（製造元：（株）東邦環境サービス）という商
品名で市販品として入手できる。 この油凝固剤は分子量200万以上を有する白色粉末であ
り、短時間で廃油を固化してゴム化させる。この油凝固
剤は水に不溶で油のみに直接作用する。また、凝固した
固化物からは油分が再溶出することはなく、固化物の燃
焼処理も可能である。 この油凝固剤により固化処理可能な廃油、廃溶剤を例示
すると次の通りである： 石油系；ガソリン、白灯油、軽油、Ａ重油、Ｂ重油、Ｃ
重油等。 塩素系炭化水素；四塩化炭素、クロロホルム、トリクロ
ルエチレン、テトラクロルエチレン、ジクロルベンゼン
等。 直鎖パラフィン炭化水素;n−ヘキサン、ｎ−ドデカン、
ｎ−ペンタデカン、ｎ−パラフィン、シクロヘキサン
等。 芳香族炭化水素；ベンゼン、トルエン、キシレン、エチ
ルベンゼン等。 その他;TBP（リン酸トリ−ｎ−ブチル）、石油エーテル
等。 この発明を実施するに際しては、解体・撤去しようとす
る機器の内部に、油凝固剤を投入して機器内部に残留し
ている放射性廃油を固化せしめたのち、目的に応じて機
器を解体あるいは撤去する。内部の放射性廃油は固化し
ているため、機器を解体しても漏洩することがないか
ら、放射性汚染が拡大する危険はなく、解体作業の安全
性を高めるとともに、機器を放射性固体廃棄物としても
扱えることから撤去作業における機器の解体工程を合理
化することができる。 特に複雑な内部構造や内部形状を有する機器において
は、粉末状の油凝固剤をそのまま機器内に投入した場合
には、機器内部の隅々まで油凝固剤が行きわたらないこ
ともある。この場合には、粉末状の油凝固剤を水及びエ
タノールに懸濁させてスラリー状とし、このスラリー状
の凝固剤を機器内に注入することが好ましい。That is, the method for disassembling / removing equipment containing radioactive waste oil according to the present invention is a method of disassembling and removing equipment containing radioactive waste oil and / or waste solvent by adding an oil coagulant made of polynorbornene into the equipment. After the waste oil and / or the waste solvent therein is solidified, the equipment is disassembled and removed. As the oil coagulant, an oil coagulant composed of polynorbornene produced by ring-opening polymerization of norbornene is used.
Such an oil coagulant is, for example, “Cactus Oil Hardener
It is available as a commercial product under the product name "TFN-2" (manufacturer: Toho Environmental Service Co., Ltd.). This oil coagulant is a white powder having a molecular weight of 2,000,000 or more, and solidifies waste oil into rubber in a short time. This oil coagulant is insoluble in water and acts only on oil directly. Further, the oil does not re-elute from the solidified solidified product, and the solidified product can be burnt. Examples of waste oil and waste solvent that can be solidified by this oil coagulant are as follows: Petroleum-based; gasoline, white kerosene, light oil, A heavy oil, B heavy oil, C
Heavy oil, etc. Chlorine hydrocarbons; carbon tetrachloride, chloroform, trichloroethylene, tetrachloroethylene, dichlorobenzene, etc. Straight chain paraffin hydrocarbon; n-hexane, n-dodecane,
n-pentadecane, n-paraffin, cyclohexane and the like. Aromatic hydrocarbons; benzene, toluene, xylene, ethylbenzene and the like. Others: TBP (tri-n-butyl phosphate), petroleum ether, etc. In carrying out this invention, an oil coagulant is put into the equipment to be disassembled / removed to solidify the radioactive waste oil remaining in the equipment, and then the equipment is disassembled or removed according to the purpose. To do. Since the radioactive waste oil inside is solidified, it does not leak even if the equipment is dismantled, so there is no risk of expanding radioactive contamination, improving the safety of dismantling work and also making the equipment solid radioactive waste. Since it can be handled, it is possible to rationalize the dismantling process of the equipment in the removal work. Particularly in a device having a complicated internal structure or internal shape, when the powdery oil coagulant is directly introduced into the device, the oil coagulant may not reach every corner of the device. In this case, it is preferable that the powdery oil coagulant is suspended in water and ethanol to form a slurry, and the slurry coagulant is injected into the device.
管理区域内で使用した回転機を撤去・交換するに際して
この発明を実施した。この機器内には廃潤滑油が含まれ
ており、廃潤滑油と同量（容量）の油凝固剤「カクタス
オイルハードナーTFN-2」を機器内に注入した。固体粉
末状のこの油凝固剤は予め水とエタノールによりスラリ
ー状としてから使用した（水１部、エタノール１部、油
凝固剤１部）。 機器内の廃油をスラリー状油凝固剤と接触させることに
よりゴム状に固化せしめたのち、残留するスラリー溶媒
（水とエタノール）を機器内から排出させた。機器の撤
去時には、内部の廃油は固化して流動性がないため漏洩
することもなく、機器内面に接着している状態で機器と
ともに撤去することができた。さらに撤去部品の開口部
をアクリル樹脂あるいはエポキシ樹脂で密閉し、内部の
固化廃油は、撤去部品とともに放射性固体廃棄物として
処理できる。The present invention was implemented when removing and replacing the rotating machine used in the controlled area. This equipment contained waste lubricating oil, and the same amount (volume) of oil coagulant "Cactus Oil Hardener TFN-2" was injected into the equipment. This oily coagulant in the form of a solid powder was used in advance as a slurry with water and ethanol (1 part water, 1 part ethanol, 1 part oil coagulant). After the waste oil in the equipment was solidified into a rubber by contacting it with a slurry-like oil coagulant, the residual slurry solvent (water and ethanol) was discharged from the equipment. When the equipment was removed, the waste oil inside was solidified and had no fluidity, so it did not leak and could be removed together with the equipment while being adhered to the inner surface of the equipment. Further, the opening of the removed component is sealed with acrylic resin or epoxy resin, and the solidified waste oil inside can be treated as radioactive solid waste together with the removed component.
以上説明したところからわかるようにこの発明によれ
ば、排出できない放射性廃油を内部に含んでいる機器を
解体・撤去するに際して、内部の廃油を固化させたため
漏洩することがなく、従って漏洩に起因する放射性汚染
の拡大を防止できるとともに、被曝の低減化が図れるた
め、解体・撤去作業が大幅にしやすくなる。 また、撤去作業においては、従来のような解体及び放射
性廃油の除去作業の工程を無くすことが可能となった。 特に油凝固剤を、粉末状でなくスラリー状として使用す
る場合には、複雑な内部構造や形状を有する機器の細部
に油凝固剤が行きわたるため、細部に残留している廃油
でも確実に固化させることができる。 かくして機器内部で固化させた廃油は、解体あるいは撤
去部品とともに放射性固体廃棄物として処理できる利点
もある。As can be seen from the above description, according to the present invention, when disassembling / removing a device that contains radioactive waste oil that cannot be discharged, the waste oil inside is solidified and does not leak. The spread of radioactive contamination can be prevented and the exposure can be reduced, so dismantling and removal work can be greatly facilitated. Further, in the removal work, it has become possible to eliminate the conventional steps of dismantling and removing radioactive waste oil. Especially when using an oil coagulant in the form of a slurry rather than a powder, the oil coagulant spreads to the details of the equipment that has a complicated internal structure and shape. Can be made. Thus, the waste oil solidified inside the equipment has an advantage that it can be treated as radioactive solid waste together with dismantled or removed parts.
Claims (4)
解体撤去するに際し、ポリノルボーネンからなる油凝固
剤を前記機器内に投入して機器内の廃油及び／又は廃溶
剤を固化した後、前記機器を解体撤去することを特徴と
する放射性廃油等を含む機器の解体・撤去方法。1. When disassembling and removing equipment containing radioactive waste oil and / or waste solvent, after solidifying waste oil and / or waste solvent in the equipment by introducing an oil coagulant made of polynorbornene into the equipment A method for disassembling / removing equipment including radioactive waste oil, characterized by disassembling and removing the equipment.
請求項１記載の方法。2. The method according to claim 1, wherein the oil coagulant is used as a solid powder.
ールに懸濁させてスラリー状として使用する請求項２記
載の方法。3. The method according to claim 2, wherein the oil coagulant in the form of a solid powder is suspended in water and ethanol and used as a slurry.
投入して機器内の廃油及び／又は廃溶剤を固化し、残留
する水及びエタノールを機器内から排出した後、機器開
口部をエポキシ樹脂またはアクリル樹脂で密閉すること
を特徴とする請求項３記載の方法。4. An oil coagulant in the form of a slurry is charged into a device to solidify waste oil and / or a solvent in the device and residual water and ethanol are discharged from the device, and then the device opening is opened. The method according to claim 3, which is sealed with an epoxy resin or an acrylic resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15751189A JPH0715518B2 (en) | 1989-06-20 | 1989-06-20 | How to dismantle and remove equipment that contains radioactive waste oil, etc. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15751189A JPH0715518B2 (en) | 1989-06-20 | 1989-06-20 | How to dismantle and remove equipment that contains radioactive waste oil, etc. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0321896A JPH0321896A (en) | 1991-01-30 |
| JPH0715518B2 true JPH0715518B2 (en) | 1995-02-22 |
Family
ID=15651278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15751189A Expired - Fee Related JPH0715518B2 (en) | 1989-06-20 | 1989-06-20 | How to dismantle and remove equipment that contains radioactive waste oil, etc. |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0715518B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3000831A1 (en) * | 2013-01-09 | 2014-07-11 | Electricite De France | CARBON RADIOACTIVE WASTE TREATMENT FACILITY, IN PARTICULAR GRAPHITE |
| US9978470B2 (en) * | 2015-12-14 | 2018-05-22 | Uchicago Argonne, Llc | Immobilization of organic radioactive and non-radioactive liquid waste in a composite matrix |
-
1989
- 1989-06-20 JP JP15751189A patent/JPH0715518B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0321896A (en) | 1991-01-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |