JPS6367563A - Automatic inspecting method for tank internal surface coating - Google Patents
Automatic inspecting method for tank internal surface coatingInfo
- Publication number
- JPS6367563A JPS6367563A JP61211512A JP21151286A JPS6367563A JP S6367563 A JPS6367563 A JP S6367563A JP 61211512 A JP61211512 A JP 61211512A JP 21151286 A JP21151286 A JP 21151286A JP S6367563 A JPS6367563 A JP S6367563A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- side wall
- coating
- surface coating
- ultrasonic probe
- 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
- 239000011248 coating agent Substances 0.000 title claims abstract description 35
- 238000000576 coating method Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000523 sample Substances 0.000 claims abstract description 19
- 238000007689 inspection Methods 0.000 claims description 21
- 238000002592 echocardiography Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000012857 radioactive material Substances 0.000 description 2
- 239000000941 radioactive substance Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、タンク内面の塗装状態を超音波で検査する方
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for inspecting the coating condition of the inner surface of a tank using ultrasonic waves.
従来、タンク内面の塗装状態を検査するには、開放点検
によシ行なっていた。例えば、原子力発電所内の放射性
物質を含む溶液の貯蔵タンクの場合は、５年程度内部点
検なしで運転後、開放点検を行ない塗装の状態により内
面塗装の部分補修を行なってい友。また、必要があれば
プラントの定期検査時に再び開放点検を行ない、全面再
塗装してい次。Conventionally, the condition of the coating on the inside of a tank has been inspected by opening the tank. For example, in the case of a storage tank containing a solution containing radioactive materials in a nuclear power plant, after it has been operated for about five years without any internal inspection, an overhaul inspection is performed and the interior surface coating is partially repaired depending on the condition of the coating. In addition, if necessary, we conduct an open inspection again during regular plant inspections and repaint the entire surface.
しかしながら、従来のような開放点検による検査方法で
は、タンクの機能を停止させなければ検査をすることが
できず、タンクの機能停止中の損失が極めて太きく、１
：ｑ、開放点検作業は面倒であるので頻繁に行なうこと
ができず、長時間内面換装の状態を確認できなかった。However, with the conventional inspection method using open inspection, inspection cannot be performed unless the tank function is stopped, and losses during tank function stoppage are extremely large.
:q. Open inspection work was troublesome and could not be done frequently, and the status of internal replacement could not be checked for a long time.
さらに、タンク内面の塗装状態を予め知ることができな
いので。Furthermore, it is not possible to know in advance the state of the paint on the inside of the tank.
補修塗装の池備が適切にできなかった。The preparation for repair painting was not done properly.
また、内容物が毒物、放射性物質等の人体に有害な物質
の場合は、開放点検作業が困難であり、しかも、放射性
物質の貯蔵タンク場合は、開放点検のために一時管理区
域の仮設、内容液の移送、内部除染等が必要であり、ま
た、汚染管理区域内の作業となり１作業能率が極端に低
下し、かつ、作業者の放射線被曝を低減し難かった。In addition, if the contents are harmful to the human body such as poisonous substances or radioactive substances, open inspection work is difficult, and in the case of storage tanks for radioactive substances, it is necessary to temporarily set up a temporary controlled area for open inspection. Liquid transfer, internal decontamination, etc. were required, and the work was performed within a contamination control area, resulting in an extremely low work efficiency, and it was difficult to reduce the radiation exposure of workers.
本発明は１以上の問題点を解消し、開放点検作業をする
ことなく、タンクが稼働中であっても極めて簡単にタン
ク内面の塗装状態を診断することができるタンク内面塗
装自動検査方法を提供することを目的とする。The present invention solves one or more problems and provides an automatic tank inner coating inspection method that can extremely easily diagnose the coating condition of the tank inner surface even when the tank is in operation, without having to conduct an open inspection. The purpose is to
本発明は、上記目的を達成するために、超音波探触子を
タンク外面で移動させ、このとき各位置におけるエコー
を解析して塗装状態を判断するようにし、開放点検作業
をしなくてよいようにしたものである。In order to achieve the above object, the present invention moves an ultrasonic probe on the outer surface of the tank and analyzes echoes at each position to determine the coating condition, thereby eliminating the need for open inspection work. This is how it was done.
すなわち、本発明のタンク内面塗装自動検査方法は、＃
音波探触子をタンク外面で移動させ、該超音波探触子の
位置及び超音波信号を超音波探触子と離れて別に設は次
診断記録器に出力し、該診断記録器でタンク内面の各部
位における塗装状態を判断することを特徴として構成さ
れている。That is, the tank inner surface coating automatic inspection method of the present invention is #
A sonic probe is moved on the outer surface of the tank, and the position of the ultrasonic probe and the ultrasonic signal are output to a diagnostic recorder installed separately from the ultrasonic probe. The system is characterized by determining the coating state of each part of the system.
本発明のタンク内面塗装自動検量方法に用いられる超音
波探触子は、タンク側壁の外面から超音波を入れ内面の
塗装が剥離したシ脹らんだシした状態を検出できるもの
であればよく、超音波の周波数、入射方向等は適宜変更
して用いることができる。超音波探触子のタンク外面で
の移動は、少なくともタンク側壁の全外面を移動させれ
ばよく。The ultrasonic probe used in the automatic measurement method for tank inner surface coating of the present invention may be one that can detect a swollen or swollen state in which the inner surface coating has peeled off by applying ultrasonic waves from the outer surface of the tank side wall. The frequency, direction of incidence, etc. of the ultrasonic waves can be changed as appropriate. To move the ultrasonic probe on the outer surface of the tank, it is sufficient to move at least the entire outer surface of the side wall of the tank.
その移動方法は縦横に交互に移動させても螺旋状に移動
させても他の方法であってもよい。The method of movement may be alternately vertical and horizontal movement, spiral movement, or other methods.
診断記録器は、超音波探触子から入力しｆｃ傷信号各部
位における塗装状態が判断でき、そして塗装状態が正常
でない部位を特定する九めのプリンタ、モーター等の手
段があれはよい。The diagnostic recorder is capable of determining the paint condition of each part by inputting fc flaw signals from an ultrasonic probe, and it would be good if it had a means such as a printer or a motor to identify parts where the paint condition is not normal.
本発明のタンク内面塗装自動検査方法では、超音波探触
子をタンク外面で移動させて内面塗装の状態を検知する
ので、タンクの外部のみの作業でよくタンクを停止させ
なくてもよい。また、超音波探触子と離れて別に設けた
診断記録器で内面塗装の状態を判断するので、常に安全
な区域で作業できるようになっている。In the tank inner surface coating automatic inspection method of the present invention, the state of the inner surface coating is detected by moving the ultrasonic probe on the outer surface of the tank, so the tank can be operated only on the outside of the tank without having to stop the tank. Additionally, the state of the internal coating is determined using a diagnostic recorder installed separately from the ultrasound probe, so work can always be done in a safe area.
本発明によるタンク内面塗装自動検査方法の一災施例を
第１図から第３図に基づいて説明する。An example of an automatic tank inner surface coating inspection method according to the present invention will be described with reference to FIGS. 1 to 3.
第１図はタンク内面塗装自動検査方法の実施状態を示す
図、第２図は同上に使用する装置の構成を示すブロック
図、第３図（＆）はタンク内面塗装が正常な状態を示す
タンク側壁の部分断面図、第３図（ｂ）は同上の部位に
おけるスコープを示した図、第４図（ａ）はタンク内面
塗装が剥離し次状態を示すタンク側壁の部分断面図、第
４図Ｃｂ）は同上の部位におけるスコープを示した図で
ある。Figure 1 is a diagram showing the implementation state of the automatic inspection method for tank inner surface coating, Figure 2 is a block diagram showing the configuration of the equipment used for the same, and Figure 3 (&) is a tank showing normal tank inner coating. Figure 3 (b) is a partial cross-sectional view of the side wall showing the scope at the same location as above; Figure 4 (a) is a partial cross-sectional view of the tank side wall showing the next state after the inner surface coating of the tank has peeled off. Cb) is a diagram showing a scope at the same site.
第１図において、符号１はタンクで、このタンク１の周
囲には遮蔽壁２及び雨仕舞３が設けられている。そして
、タンク側壁４の外面には雨仕舞３のマンホールよシ搬
入され次タンク側計測機５が設けられている。このタン
ク側計測機５は、タンク（１１１１壁４の外面を移動し
超音波で内面塗装の剥離脹れ状態をｖ４ぺ診断記録器６
へ出力するものである。診断記録器６は、タンク側計測
機５が発した信号を解析処理し、その解析結果を表示及
び記録するものであり、タンク１から熱れた個所に設置
されている。In FIG. 1, reference numeral 1 denotes a tank, and a shielding wall 2 and a rain cover 3 are provided around the tank 1. Further, on the outer surface of the tank side wall 4, a measuring device 5 on the next tank side is installed, which is carried in through the manhole of the rain cover 3. This tank side measuring device 5 moves on the outer surface of the tank (1111 wall 4) and uses ultrasonic waves to detect peeling and swelling of the inner surface coating.
This is what is output to. The diagnostic recorder 6 analyzes and processes the signal emitted by the tank-side measuring device 5, and displays and records the analysis results, and is installed at a location exposed to heat from the tank 1.
タンク側計測機５は、第２図に示すように、超音波探触
子７と、この超音波探触子７をタンク側壁４の外面にお
いて母線及び円周方向に移動させる駆動部８と、この駆
動部８から入力する位ｔ＝を知らせる信号と超音波探触
子７から入力する信号を発信用に変換するインターフェ
ース９と、この信号を診断記録器６へ送信する通信機１
０とからなっている。As shown in FIG. 2, the tank-side measuring device 5 includes an ultrasonic probe 7, a drive unit 8 that moves the ultrasonic probe 7 in the generatrix and circumferential directions on the outer surface of the tank side wall 4, and An interface 9 that converts the signal input from the drive unit 8 informing about t= and the signal input from the ultrasonic probe 7 into transmission, and a communication device 1 that transmits this signal to the diagnostic recorder 6.
It consists of 0.
また、診断記録器６も第２図に示すように１通信機１０
の発する信号を受信する通信機１１と、この受信した信
号をコンピータ処理に適した信号に変換するインターフ
ェース１２と、このインターフェース１２からの入力信
号を解析処理するコンピュータ１３と、このコンピュー
タ１３の解析結果を画面光示するモニター１４と、解析
結果を記録するプリンタ１５と、そして起動、停止等そ
の他の操作をする操作盤１６とからなっている。Further, the diagnostic recorder 6 also has one communication device 10 as shown in FIG.
a communication device 11 that receives a signal emitted by a computer; an interface 12 that converts the received signal into a signal suitable for computer processing; a computer 13 that analyzes and processes input signals from this interface 12; and an analysis result of this computer 13. It consists of a monitor 14 that displays the results on the screen, a printer 15 that records the analysis results, and an operation panel 16 that performs other operations such as starting and stopping.
以上のような装置において、タンク内面塗装の検査をす
るには、まず、診断記録器６をタンク１から離れた個所
にセットし、次にタンク側壁４の外面に基準点をマーキ
ングする。そして、タンク側計測機５をタンク側壁４に
セットした後テストを行なう。テスト終了後操作盤１６
を操作して診断記録器６スタートさせるとともに、タン
ク側計測機５を縦走査（出線方向走査ンと横産査（円周
方向走査）を繰り返し行なわせてタンク側壁４の全面を
走査する。このとき、第３図（ａ）に示すように、タン
ク内面塗装置７がタンク側壁４に正常にライニングされ
ている場合は、第３図（ｂ）に示すように、スコープに
２個のエコーが表われる。一方。In the apparatus described above, in order to inspect the inner surface coating of the tank, first, the diagnostic recorder 6 is set at a location away from the tank 1, and then a reference point is marked on the outer surface of the tank side wall 4. Then, after setting the tank side measuring device 5 on the tank side wall 4, a test is performed. Operation panel 16 after the test
is operated to start the diagnostic recorder 6, and the tank side measuring device 5 is caused to repeat vertical scanning (outgoing line direction scanning and horizontal direction scanning (circumferential direction scanning)) to scan the entire surface of the tank side wall 4. At this time, if the tank inner surface coating device 7 is properly lined with the tank side wall 4 as shown in FIG. 3(a), two echoes will appear on the scope as shown in FIG. 3(b). appears.On the other hand.
第４図（、）に示すように、タンク内面堕装置７がタン
ク側壁４より剥離し浮き上がっている場合は、第４図（
ｂ）に示すように、スコープに３個のエコーが衣われる
。こうしてタンク側壁４の各部位におけるタンク内面塗
装置７の状態をモニターするとともに、プリンタ１５で
その結果を記録する。As shown in Fig. 4(,), if the tank inner surface falling device 7 is separated from the tank side wall 4 and is floating, as shown in Fig. 4(,),
As shown in b), three echoes are displayed on the scope. In this way, the state of the tank inner surface coating device 7 at each location on the tank side wall 4 is monitored, and the results are recorded by the printer 15.
タンク側壁４全面の走査が終了後、タンク側計測機５を
タンク側壁４から撤去するとともに確認テストを行ない
、かつ、診断記録器６も撤去し検査作業が終了する。After the entire surface of the tank side wall 4 has been scanned, the tank side measuring device 5 is removed from the tank side wall 4 and a confirmation test is performed, and the diagnostic recorder 6 is also removed to complete the inspection work.
本発明は超音波探触子をタンク外面に走査させ、このと
きの超音波探触子の位置及び超音波信号から別個に設け
た診断記録器で塗装状態を判断するようにし次ので、タ
ンクが稼働中であっても内面の塗装状態の診断ができ設
備の稼動効率を下げない。また、塗装状態診断の次めの
準備工事及び後処理工事が不要で、かつ、内面補修をす
る場合タンク開放前に状況に合わせた十分な準備を行な
える。さらに、放射性物質のタンクの場合には、汚染Ｖ
理区域内作業が皆無で、かつ、放射線管理区域内作業も
わずかであるので、極めて安全に作業が行なえる。In the present invention, an ultrasonic probe is scanned on the outer surface of the tank, and a separately provided diagnostic recorder is used to judge the coating condition based on the position of the ultrasonic probe and the ultrasonic signal at this time. The internal coating condition can be diagnosed even during operation, without reducing the operating efficiency of the equipment. Moreover, there is no need for preparatory work or post-processing work after coating condition diagnosis, and when repairing the inner surface, sufficient preparation can be made in accordance with the situation before opening the tank. Furthermore, in the case of radioactive material tanks, contamination V
Since there is no work to be done in radiation control areas and only a small amount of work is to be done in radiation control areas, work can be carried out extremely safely.
第１図は本発明によるタンク内面塗装自動検査方法の実
施状態を示す図、第２図は同上に使用する装置の構成を
示すブロック図、第３図（ａ） （ｂ）はタンク内面塗
装が正常な状態を示すタンク側壁の部分断面図及びその
スコープを示す図、第４図（ａ） （ｂ）はタンク内面
塗装が剥離した状態を示すタンク側壁の部分断面図及び
そのスコープを示す図である。
１・・・タンク、２・・・遮蔽壁、４・・・タンクｆｆ
１ｌ壁、５・・・タンク側計測機、６・・・診断記録器
、７・・・超音波探触子、１７・・・タンク内面塗装。
特許出願人 日本銅管株式会社
代理人弁理士 １） 中 政 浩ほか１名
第１図
第３図
第４図
（ａ） （ｂ）Fig. 1 is a diagram showing the implementation state of the automatic inspection method for tank inner surface coating according to the present invention, Fig. 2 is a block diagram showing the configuration of the device used for the same, and Fig. 3 (a) and (b) are diagrams showing the implementation status of the tank inner surface coating automatic inspection method according to the present invention. Figures 4(a) and 4(b) are partial cross-sectional views of the tank side wall showing a normal state and a view showing its scope, and Figures 4(a) and 4(b) are partial cross-sectional views of the tank side wall showing a state where the inner surface coating of the tank has peeled off and views showing its scope. be. 1...tank, 2...shielding wall, 4...tank ff
1L wall, 5...Tank side measuring device, 6...Diagnostic recorder, 7...Ultrasonic probe, 17...Tank inner surface coating. Patent applicant: Nippon Doppan Co., Ltd. Representative Patent Attorney 1) Masahiro Naka and one other person Figure 1 Figure 3 Figure 4 (a) (b)
Claims (1)
の位置及び超音波信号を超音波探触子と離れて別に設け
た診断記録器に出力し、該診断記録器でタンク内面の各
部位における塗装状態を判断することを特徴とするタン
ク内面塗装自動検査方法The ultrasonic probe is moved on the outer surface of the tank, the position of the ultrasonic probe and the ultrasonic signal are output to a diagnostic recorder installed separately from the ultrasonic probe, and the diagnostic recorder records the inner surface of the tank. An automatic tank inner surface coating inspection method characterized by determining the coating condition in each part of the tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61211512A JPS6367563A (en) | 1986-09-10 | 1986-09-10 | Automatic inspecting method for tank internal surface coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61211512A JPS6367563A (en) | 1986-09-10 | 1986-09-10 | Automatic inspecting method for tank internal surface coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6367563A true JPS6367563A (en) | 1988-03-26 |
Family
ID=16607146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61211512A Pending JPS6367563A (en) | 1986-09-10 | 1986-09-10 | Automatic inspecting method for tank internal surface coating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6367563A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58136827A (en) * | 1982-02-09 | 1983-08-15 | Toray Ind Inc | Preparation of polyamide monofilament |
| AU730562B2 (en) * | 1995-12-05 | 2001-03-08 | Namba Press Works Co., Ltd. | Method of integrated molding by use of silicone rubber |
-
1986
- 1986-09-10 JP JP61211512A patent/JPS6367563A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58136827A (en) * | 1982-02-09 | 1983-08-15 | Toray Ind Inc | Preparation of polyamide monofilament |
| AU730562B2 (en) * | 1995-12-05 | 2001-03-08 | Namba Press Works Co., Ltd. | Method of integrated molding by use of silicone rubber |
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