JPS63186194A - Paint for decontamination - Google Patents
Paint for decontaminationInfo
- Publication number
- JPS63186194A JPS63186194A JP1619087A JP1619087A JPS63186194A JP S63186194 A JPS63186194 A JP S63186194A JP 1619087 A JP1619087 A JP 1619087A JP 1619087 A JP1619087 A JP 1619087A JP S63186194 A JPS63186194 A JP S63186194A
- Authority
- JP
- Japan
- Prior art keywords
- paint
- decontamination
- decontaminated
- stripping device
- steam generator
- 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
- 239000003973 paint Substances 0.000 title claims description 40
- 238000005202 decontamination Methods 0.000 title claims description 34
- 230000003588 decontaminative effect Effects 0.000 title claims description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000012190 activator Substances 0.000 claims description 5
- 125000000129 anionic group Chemical group 0.000 claims description 5
- 239000013522 chelant Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000002952 polymeric resin Substances 0.000 claims description 5
- 229920003002 synthetic resin Polymers 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 239000011247 coating layer Substances 0.000 description 7
- 239000000941 radioactive substance Substances 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000012857 radioactive material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 206010073306 Exposure to radiation Diseases 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 241000220317 Rosa Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Landscapes
- Paints Or Removers (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）
本発明は例えば原子力発電プラントの蒸気発生器氷室、
蒸気発生器蓋、弁、配管、治具等の表面に付着している
放射性物質を除去するときに使用する除染用塗料に関す
るものである。Detailed Description of the Invention (Industrial Application Field) The present invention is applicable to, for example, a steam generator ice chamber of a nuclear power plant,
It relates to a decontamination paint used to remove radioactive substances adhering to the surfaces of steam generator lids, valves, piping, jigs, etc.
（従来の技術）
原子力発電プラントでは、酸とアルカリとを使用した化
学除去方法や硼酸を使用したブラスト方法を用いて、蒸
気発生器氷室、蒸気発生器蓋、弁。(Prior art) In nuclear power plants, chemical removal methods using acids and alkalis and blasting methods using boric acid are used to remove steam generator ice chambers, steam generator lids, and valves.
配管、治具等の表面に付着している放射性物質を除去す
るようにしている。Efforts are being made to remove radioactive substances adhering to the surfaces of piping, jigs, etc.
（発明が解決しようとする問題点）
前記化学除去方法やプラスト方法では、放射性物質の除
去に多量の化学薬品及び硼酸水を使用するので、除去時
に多量の廃液が発生して、これの処理が問題になる。従
来は、この廃液を大型タンクに一旦保管した後、小型ポ
ンプにより少量づつ移送して、ドラム罐に詰めるように
しているが。(Problems to be Solved by the Invention) In the chemical removal method and the Plast method, a large amount of chemicals and boric acid water are used to remove radioactive substances, so a large amount of waste liquid is generated during removal, and it is difficult to dispose of this. It becomes a problem. Conventionally, this waste liquid was temporarily stored in a large tank and then transferred in small quantities using a small pump and filled into a drum can.
これらの作業時、ドラム罐の上蓋を脱着するときやドラ
ム罐を運搬するとき、或いは上記方法の実施に使用する
除染装置を作動したり、撤去するとき、遠隔操作するに
しても２作業員がドラム罐や除染装置にかなり接近する
ので、被曝の危険がある。また上記除染装置は、大型、
高価で、除染費用が嵩む上に、除染装置に二次的廃棄物
が発生すると、いう問題があった。During these operations, when removing and attaching the top cover of the drum can, when transporting the drum can, and when operating and removing the decontamination equipment used to carry out the above methods, two workers are required even if remote control is used. There is a risk of radiation exposure as the equipment is quite close to the drum can and decontamination equipment. In addition, the above decontamination equipment is large,
In addition to being expensive and increasing decontamination costs, there were problems in that the decontamination equipment generated secondary waste.
（問題点を解決するためる手段）
本発明は前記の問題点に対処するもので、水性ペイント
に、キレートポリマー樹脂５〜４０ｗｔ％、アニオン活
性剤１〜１０ｗｔ％、アルカリ剤０．０５〜０．５ｗｔ
％、アルコール２〜Ｌｏｗ、％を混合したことを特徴と
する除染用塗料に係わり、その目的とする処は、被曝線
量及び除染費用を減少できる除染用塗料を供する点にあ
る。(Means for Solving the Problems) The present invention addresses the above-mentioned problems by adding 5 to 40 wt % of a chelate polymer resin, 1 to 10 wt % of an anionic activator, and 0.05 to 0.0 wt % of an alkali agent to a water-based paint. 5wt
The purpose of this decontamination paint is to provide a decontamination paint that can reduce exposure doses and decontamination costs.
（作用）
本発明の除染用塗料は前記のように水性ペイントに、キ
レートポリマー樹脂５〜４０ｗｔ％、アニオン活性剤１
〜１０ｗｔ％、アルカリ剤Ｏ０゛０５〜０．５ｗ、％、
アルコール２〜１０ｗｔ％を混合したものであり、塗布
装置を遠隔操作して。(Function) As mentioned above, the decontamination paint of the present invention is a water-based paint containing 5 to 40 wt% of chelate polymer resin and 1 part of anionic activator.
~10wt%, alkaline agent O0゛05~0.5w,%,
It is a mixture of 2 to 10 wt% alcohol, and the application device is controlled remotely.
同除染用塗料を原子力発電プラントの蒸気発生器氷室、
蒸気発生器蓋、弁、配管、治具等の表面に塗布して、同
除染用塗料を上記機器類の表面に付着している放射性物
質とともに乾燥、固化し、その後は、剥離装置等を遠隔
操作して剥離した後。The same decontamination paint was used in the steam generator ice chamber of a nuclear power plant.
The decontamination paint is applied to the surfaces of steam generator lids, valves, piping, jigs, etc., and is dried and solidified together with the radioactive materials attached to the surfaces of the above equipment. After peeling off by remote control.
焼却処分して、廃棄物を減容する。Reduce the volume of waste by incinerating it.
（実施例） 次に本発明の除染用塗料を具体的に説明する。(Example) Next, the decontamination paint of the present invention will be specifically explained.
本発明の除染用塗料は、水性ペイントに、キレートポリ
マー樹脂５〜４０ｗｔ％、アニオン活性剤ｌ〜ｌ０ｗｔ
％、アルカリ剤０．０５〜０．５Ｗ、％、アルコール２
〜１０ｗｔ％を混合して１作成する。The decontamination paint of the present invention includes water-based paint, 5 to 40 wt% of chelate polymer resin, and 1 to 10 wt% of anionic activator.
%, alkaline agent 0.05-0.5W, %, alcohol 2
1 by mixing ~10 wt%.
またこの除染用塗料を使用して、原子力発電プラントの
蒸気発生器氷室、薄気発生器蓋、弁、配管、治具等の表
面に付着している放射性物質を除去するに当たっては、
第１図に示すように剥離棒（２）を有するペイント剥離
装置（６）を被除染部材°（５）の表面に取付け２次い
で長尺のスプレーガン（７）（塗布装置）の先端から被
除染部材（５）の表面へ上記除染用塗料を噴射しく（１
）参照）、塗膜層（３）を形成して、同塗膜層（３）を
被除染部材（５）の表面に付着している放射性物質（４
）とともに乾燥、固化する。２秒程度で乾燥、固化する
が。In addition, when using this decontamination paint to remove radioactive substances adhering to the surfaces of steam generator ice chambers, thin air generator lids, valves, piping, jigs, etc. of nuclear power plants,
As shown in Figure 1, a paint stripping device (6) with a stripping rod (2) is attached to the surface of the object to be decontaminated (5). Spray the decontamination paint onto the surface of the member to be decontaminated (5) (1).
), form a coating layer (3), and remove the radioactive material (4) attached to the surface of the decontaminated member (5).
) dries and solidifies. It dries and solidifies in about 2 seconds.
そうしたら、第２図に示すように剥離棒（２）を操作し
ながらペイント剥離装置（６）を持ち上げて。Then, as shown in Figure 2, lift the paint stripping device (6) while operating the stripping rod (2).
乾燥、固化した塗膜層（３）を被除染部材（５）から剥
離する。またこの剥離した塗膜層（３）は、置数５射腺
廃棄ドラム罐に一旦保管した後、焼却処分する。因に１
５ｋｇの除染用塗料を塗布した場合、乾燥、固化後は約
６ ｋｇになり、焼却後は６０ｇに減容した。また除染
前の被除染部材（５）の放射線量率２７．５”／、は、
除染後、 １． ７５”／ｎに減少した。The dried and solidified coating layer (3) is peeled off from the member to be decontaminated (5). Further, this peeled coating layer (3) is temporarily stored in a waste disposal drum can with a number of 5 units, and then incinerated. In fact 1
When 5 kg of decontamination paint was applied, it weighed approximately 6 kg after drying and solidification, and reduced to 60 g after incineration. In addition, the radiation dose rate of the decontaminated member (5) before decontamination is 27.5"/,
After decontamination, 1. It decreased to 75”/n.
ペイント剥離装置の他の具体例を第３，４図に示した。Other specific examples of the paint stripping device are shown in FIGS. 3 and 4.
第３図は圧力式ペイント剥離装置（６゛）を示し、第４
図はバキューム式ペイント剥離装置（６′″）を示して
いる。Figure 3 shows a pressure-type paint stripping device (6゛), and the fourth
The figure shows a vacuum paint stripping device (6''').
まず第３図の圧力式ペイント剥離装置（６′）を説明す
ると、 （５’）が壁（１０ａ） （１０ｂ）間に存在
する限られた面積の垂直被除染部材で、同被除染部材（
５゛）に付着している放射性物質を除去する場合には１
圧力式ペイント剥離装置（６′）を吊具（１６）により
被除染部材（５°）面に沿い吊り下げる。このとき、遠
隔操作棒を使用して、ワイヤメツシュ板（１４）を被除
染部材（５゛）面に軽く押し付けるようにする。次いで
エアホース（１５）から装置本体（１１）内に設けたエ
ア溜（図示せず）へ圧力空気を送り１両側のアーム（１
２）を伸長方向に作動し、同各アーム（１２）の先端に
取付けた固定用バラ） （１３）を壁（１０ａ） （１
０ｂ）に押し付けて、圧力式ペイント剥離装置（６”）
を壁（１０ａ） （１０ｂ）間に固定し１次いでスプレ
ーガン等の塗布装置を遠隔操作し、圧力式ペイント剥離
装置（６゛）を中心として幅で同装置の２〜３倍、高さ
で同装置の４〜５倍の範囲にワイヤメツシュ板（１４）
を含めて上記除染用塗料を塗布し、同除染用塗料が乾燥
、固化したら、上記エア溜を大気に開放し。First, to explain the pressure-type paint stripping device (6') in Figure 3, (5') is a vertically decontaminated member with a limited area that exists between walls (10a) and (10b). Element(
When removing radioactive substances attached to 5゛), 1
The pressure-type paint stripping device (6') is suspended along the surface of the object to be decontaminated (5 degrees) using the hanging device (16). At this time, use a remote control rod to lightly press the wire mesh plate (14) against the surface of the member to be decontaminated (5'). Next, pressurized air is sent from the air hose (15) to an air reservoir (not shown) provided in the main body (11) of the device (11).
2) in the extension direction, and the fixing rose (13) attached to the tip of each arm (12) of the same
0b) and press the pressure paint stripper (6”)
is fixed between the walls (10a) and (10b), and then a coating device such as a spray gun is remotely controlled, and a pressure-type paint stripping device (6゛) is used at the center, and the width is 2 to 3 times that of the same device, and the height is Wire mesh plate (14) in the range 4 to 5 times that of the same device
After the decontamination paint is dried and solidified, the air reservoir is opened to the atmosphere.
両側のアーム（１２）を縮めて、圧力式ペイント剥離装
置（６゛）を吊り上げる。そうすると、ワイヤメツシュ
板（１４）の部分の塗膜層が被除染部材（５゛）面に密
着していないので、乾燥、固化した塗膜層が放射性物質
とともに剥離して、被除染部材（５゛）面が除染される
。その後の塗膜層は、前述の要領で焼却処分する。Retract the arms (12) on both sides and lift the pressure paint stripper (6゛). Then, since the coating layer on the wire mesh plate (14) is not in close contact with the surface of the object to be decontaminated (5゛), the dried and solidified coating layer peels off together with the radioactive material and the object to be decontaminated (5). 5) The surface is decontaminated. The subsequent coating layer is then incinerated as described above.
次に第４図のバキューム式ペイント剥離装置（６゛）を
説明する。（５°゛）が広い面積の垂直被除染部材で、
同被除染部材（５”）に付着している放射性物質を除去
する場合には１同被除染部材（５“”）の両側に壁がな
いので、バキュームバット（１７）内の空気をエアホー
ス（１５）を介し吸引して、バキューム式ペイント剥離
装置（６１）を被除染部材（５“）に吸着、固定する。Next, the vacuum type paint stripping device (6') shown in FIG. 4 will be explained. (5°゛) is a vertically decontaminated member with a large area,
When removing radioactive substances attached to the decontamination target member (5"), there are no walls on either side of the decontamination target member (5"), so the air in the vacuum vat (17) must be removed. The vacuum paint stripping device (61) is sucked and fixed to the member to be decontaminated (5'') by suction through the air hose (15).
それから第３図の場合と同じ要領で上記除染用塗料の塗
布、及び塗膜層の剥離を行い、剥離作業が終了したら、
上記吸着を解いて、バキューム式ペイント剥離装置（６
”）を吊り上げる。また剥離した塗膜層は、前述の要領
で焼却処分する。Then, apply the decontamination paint and peel off the coating layer in the same manner as in Figure 3. Once the peeling work is completed,
Release the adsorption mentioned above and use the vacuum paint stripping device (6).
”). Also, the peeled paint layer is incinerated as described above.
（発明の効果）
本発明の除染用塗料は前記のように水性ペイントに、キ
レートポリマー樹脂５〜４０ｗｔ％、アニオン活性剤１
〜Ｌｏｗｔ％、アルカリ剤０．０５〜０．５ｗｔ％、ア
ルコール２〜１０ｗｔ％を混合したものであり、塗布装
置を遠隔操作して。(Effects of the Invention) As mentioned above, the decontamination paint of the present invention includes water-based paint, 5 to 40 wt% of chelate polymer resin, and 1 part of anionic activator.
~Lowt%, an alkali agent of 0.05 to 0.5 wt%, and an alcohol of 2 to 10 wt%, and the coating device is controlled remotely.
同除染用塗料を原子力発電プラントの蒸気発生器氷室、
蒸気発生器蓋、弁、配管、治具等の表面に塗布して、同
除染用塗料が上記機器類の表面に付着している放射性物
質とともに乾燥、固化し、その後は、剥難装置等を遠隔
操作して剥離すればよく、除染時に作業員が被除染部材
に接近する必要がなくて、被曝線量が減少する。また剥
離した塗膜層は焼却処分すればよく、廃棄物が減容され
て。The same decontamination paint was used in the steam generator ice chamber of a nuclear power plant.
The decontamination paint is applied to the surfaces of steam generator lids, valves, piping, jigs, etc., and dries and solidifies together with the radioactive materials attached to the surfaces of the above equipment. They can be removed by remote control, and there is no need for workers to approach the parts to be decontaminated during decontamination, reducing radiation exposure. In addition, the peeled paint layer can be disposed of by incineration, reducing the volume of waste.
処分が容易になる。しかも除染に使用する機器が上記の
ように構造の簡単な塗布装置や剥離装置であり、上記処
分が容易になる点と相撲って除染費用が低減する。Disposal becomes easier. Furthermore, the equipment used for decontamination is a coating device and a stripping device with a simple structure as described above, and the decontamination cost is reduced in conjunction with the fact that the above-mentioned disposal is easy.
第１図は本発明の除染用塗料を被除染部材に塗布すると
きの状態を示す説明図、第２図は乾燥。
固化した塗膜層を剥離するときの状態を示す説明図、第
３図は剥離装置の一例を示す正面図、第４図は剥離装置
の他の例を示す正面図である。
（３）・・・除染用塗料、（４）・・・除染物質、（５
）・・・被除染部材。FIG. 1 is an explanatory diagram showing the state in which the decontamination paint of the present invention is applied to a member to be decontaminated, and FIG. 2 is a drying state. FIG. 3 is a front view showing an example of a peeling device, and FIG. 4 is a front view showing another example of the peeling device. (3)... Decontamination paint, (4)... Decontamination substance, (5
)...Parts to be decontaminated.
Claims (1)
％、アニオン活性剤１〜１０ｗ＿ｔ％、アルカリ剤０．
０５〜０．５ｗ＿ｔ％、アルコール２〜１０ｗ＿ｔ％を
混合したことを特徴とする除染用塗料。Chelate polymer resin 5-40w_t for water-based paint
%, anionic activator 1-10w_t%, alkaline agent 0.
A decontamination paint characterized by a mixture of 0.05 to 0.5 w_t% and 2 to 10 w_t% of alcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1619087A JPS63186194A (en) | 1987-01-28 | 1987-01-28 | Paint for decontamination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1619087A JPS63186194A (en) | 1987-01-28 | 1987-01-28 | Paint for decontamination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63186194A true JPS63186194A (en) | 1988-08-01 |
Family
ID=11909597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1619087A Pending JPS63186194A (en) | 1987-01-28 | 1987-01-28 | Paint for decontamination |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63186194A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5205864A (en) * | 1991-12-20 | 1993-04-27 | Westinghouse Electric Corp. | Inorganic based strippable coatings for isolating hazardous materials and method for making and using the same |
| JP2012185097A (en) * | 2011-03-07 | 2012-09-27 | Mitsubishi Heavy Ind Ltd | Radioactive waste decontamination method |
| JP2016065818A (en) * | 2014-09-25 | 2016-04-28 | 三菱重工業株式会社 | Radioactive waste decontamination method |
-
1987
- 1987-01-28 JP JP1619087A patent/JPS63186194A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5205864A (en) * | 1991-12-20 | 1993-04-27 | Westinghouse Electric Corp. | Inorganic based strippable coatings for isolating hazardous materials and method for making and using the same |
| JP2012185097A (en) * | 2011-03-07 | 2012-09-27 | Mitsubishi Heavy Ind Ltd | Radioactive waste decontamination method |
| JP2016065818A (en) * | 2014-09-25 | 2016-04-28 | 三菱重工業株式会社 | Radioactive waste decontamination method |
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