JP2001194483A - Coating degradation diagnosis method and device - Google Patents
Coating degradation diagnosis method and deviceInfo
- Publication number
- JP2001194483A JP2001194483A JP2000003560A JP2000003560A JP2001194483A JP 2001194483 A JP2001194483 A JP 2001194483A JP 2000003560 A JP2000003560 A JP 2000003560A JP 2000003560 A JP2000003560 A JP 2000003560A JP 2001194483 A JP2001194483 A JP 2001194483A
- Authority
- JP
- Japan
- Prior art keywords
- coating film
- deterioration
- image
- image processing
- shadow
- 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.)
- Granted
Links
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
- Y02E30/30—Nuclear fission reactors
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、塗膜劣化診断方法
及び装置に関し、特に塗膜の劣化状態を能率的に診断す
ることができ、しかも個人の技量に関係なく誰でも容易
且つ正確に診断できるようにした塗膜劣化診断方法及び
装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for diagnosing deterioration of a coating film, and more particularly to a method and apparatus for efficiently diagnosing the deterioration state of a coating film, and easily and accurately irrespective of individual skill. The present invention relates to a method and an apparatus for diagnosing deterioration of a coating film.
【０００２】[0002]
【従来の技術】図５は、コンクリート製原子炉格納容器
（ＰＣＶ）の一例を示しており、この原子炉格納容器
は、基礎１に立設された中空構造の格納容器本体２と、
該格納容器本体２の内方に位置するように基礎１に立設
され且つ上部に原子炉圧力容器３を支持する円筒状のペ
デスタル４と、前記格納容器本体２の内周面の上下方向
中間部分からペデスタル４の上部に向って略水平に延び
るダイヤフラムフロア５と、原子炉圧力容器３の上側開
口部を閉止するトップヘッド６とを備えている。2. Description of the Related Art FIG. 1 shows an example of a concrete reactor containment vessel (PCV). This reactor containment vessel has a hollow containment vessel main body 2 erected on a foundation 1 and
A cylindrical pedestal 4 erected on the foundation 1 so as to be located inside the containment vessel main body 2 and supporting a reactor pressure vessel 3 on an upper part thereof; It has a diaphragm floor 5 extending substantially horizontally from the portion toward the upper part of the pedestal 4, and a top head 6 for closing an upper opening of the reactor pressure vessel 3.
【０００３】前記格納容器本体２、ペデスタル４、ダイ
ヤフラムフロア５は鉄筋コンクリート構造によって一体
的に形成され、また、格納容器本体２の内周面には、該
内周面に沿って延びる鋼製ライナ７が設けられて外部と
の間の気密が保持されるようになっている。The containment vessel main body 2, pedestal 4, and diaphragm floor 5 are integrally formed of a reinforced concrete structure. Is provided to maintain airtightness with the outside.
【０００４】ダイヤフラムフロア５の上面、格納容器本
体２の内周面、トップヘッド６の下面によって囲まれる
空間である上部ドライウエル８には、原子炉圧力容器３
に接続される配管９や種々の機器等が配置されている。A reactor pressure vessel 3 is provided in an upper dry well 8 which is a space surrounded by an upper surface of the diaphragm floor 5, an inner peripheral surface of the containment vessel main body 2, and a lower surface of the top head 6.
And various devices and the like connected to the pipe 9 are arranged.
【０００５】また、基礎１の上面、格納容器本体２の内
周面、ペデスタル４の外周面、ダイヤフラムフロア５の
下面によって囲まれる環状の空間であるサプレッション
チェンバ１０（圧力抑制室）、及び基礎１の上面、ペデ
スタル４の内周面、ペデスタル４の内部に設けたフロア
１１の下面によって囲まれる円柱状の空間であるサプレ
ッションチェンバ１２（内部圧力抑制室）には、蒸気を
凝縮するための水１３が貯留されており、上記サプレッ
ションチェンバ１０，１２は、ペデスタル４に設けた開
口１４を介して連通するようになっている。A suppression chamber (pressure suppression chamber), which is an annular space surrounded by the upper surface of the foundation 1, the inner peripheral surface of the containment vessel body 2, the outer peripheral surface of the pedestal 4, and the lower surface of the diaphragm floor 5, and the foundation 1 Water 13 for condensing steam is provided in a suppression chamber 12 (internal pressure suppression chamber) which is a cylindrical space surrounded by the upper surface of the pedestal 4, the inner peripheral surface of the pedestal 4, and the lower surface of a floor 11 provided inside the pedestal 4. And the suppression chambers 10 and 12 communicate with each other through an opening 14 provided in the pedestal 4.
【０００６】上記のサプレッションチェンバ１０の内部
には、略垂直に延びる複数のベント管１５が配置されて
おり、その上端部がダイヤフラムフロア５を貫通して該
ダイヤフラムフロア５に支持されており、また、下端部
がサプレッションチェンバ１０に貯留されている水１３
に没しており、このベント管１５によって、主蒸気管等
の配管９が破断した際に、上部ドライウエル８に噴出す
る蒸気をサプレッションチェンバ１０に導いて凝縮さ
せ、上部ドライウエル８の圧力上昇を抑制するようにな
っている。A plurality of substantially vertically extending vent pipes 15 are disposed inside the suppression chamber 10, and the upper ends thereof pass through the diaphragm floor 5 and are supported by the diaphragm floor 5. , Water 13 whose lower end is stored in the suppression chamber 10.
When the pipe 9 such as the main steam pipe is broken by the vent pipe 15, the steam ejected to the upper dry well 8 is guided to the suppression chamber 10 to be condensed, and the pressure of the upper dry well 8 rises. Is to be suppressed.
【０００７】前記サプレッションチェンバ１０，１２内
には、水１３が貯留されるために、ライナ７が錆を生じ
ないように保護する必要があり、このために、ライナ７
の内面には塗装を施して塗膜を形成するようにしてい
る。Since the water 13 is stored in the suppression chambers 10 and 12, it is necessary to protect the liner 7 from rusting.
Is applied to the inner surface to form a coating film.
【０００８】しかし、このようにライナ７内面に塗装を
行って塗膜を形成しても、時間の経過に伴って塗膜を通
してライナ７側に水１３が滲入し、このために塗膜面に
ブリスタと称される膨らみ（水泡）が生じてライナ７が
錆を生じてしまうという問題がある。However, even when the inner surface of the liner 7 is coated as described above to form a coating film, water 13 permeates into the liner 7 through the coating film with the passage of time. There is a problem that swelling (water bubbles) called blisters occurs and the liner 7 rusts.
【０００９】このために、上記ブリスタが塗膜面に発生
しているか、或いはブリスタが発生している場合にはど
の程度に塗膜の劣化が進んでいるか、を定期的に検査
し、ブリスタが基準値より多く発生している場合には、
サプレッションチェンバ１０，１２内面の塗装のやり直
しを行うようにしている。For this purpose, it is necessary to periodically inspect whether the blister is generated on the surface of the coating film or, if a blister is generated, how much the coating film has deteriorated. If it occurs more than the reference value,
The inner surfaces of the suppression chambers 10 and 12 are repainted.
【００１０】従来、サプレッションチェンバ１０，１２
の塗膜面の劣化状態を診断する際には、先ずサプレッシ
ョンチェンバ１０，１２内の水１３を一旦外部に排出
し、塗膜面を洗浄した後、塗膜面をカメラを用いて撮影
し、撮影によって得られた写真または映像をもとに、塗
膜面の単位面積当たり（例えば１０ｃｍ×１０ｃｍ）に
どの程度のブリスタが発生しているか、ブリスタの占め
る面積の割合を経験を有する人が目視により観察し、こ
れにより塗膜の劣化を診断している。Conventionally, suppression chambers 10, 12
In diagnosing the deterioration state of the coating film surface, first, the water 13 in the suppression chambers 10 and 12 is once discharged to the outside, and the coating film surface is washed, and then the coating film surface is photographed using a camera. Based on a photograph or video obtained by photographing, a person who has experience visually sees how many blisters are generated per unit area (for example, 10 cm × 10 cm) of the coating film surface and the proportion of the area occupied by the blisters. And the deterioration of the coating film is diagnosed.
【００１１】[0011]
【発明が解決しようとする課題】しかし、従来は、経験
を有する人の目視によって塗膜劣化の診断を行っていた
ために、限られた作業員しか診断を行うことができず、
更に診断に時間が掛かってしまい作業能率が悪いという
問題を有していた。However, in the past, the diagnosis of coating film deterioration was made visually by an experienced person, so that only a limited number of workers could make the diagnosis.
Further, there is a problem that it takes a long time for the diagnosis and the working efficiency is poor.
【００１２】また、撮影の条件によってブリスタが判別
し難い場合があり、このために診断に細心の注意が必要
であり、しかも人間の目視によって診断しているために
診断に個人差が生じてしまうといった問題を有してい
た。In some cases, it is difficult to distinguish a blister depending on photographing conditions. For this reason, it is necessary to pay close attention to the diagnosis. Moreover, since the diagnosis is performed by the naked eye, there is an individual difference in the diagnosis. There was a problem.
【００１３】本発明は、かかる従来方法のもつ問題点を
解決すべくなしたもので、塗膜の劣化状態を能率的に診
断することができ、しかも個人の技量に関係なく誰でも
容易且つ正確な診断を行えるようにした塗膜劣化診断方
法及び装置を提供することを目的としている。The present invention has been made to solve the problems of the conventional method, and can efficiently diagnose the state of deterioration of a coating film, and can be easily and accurately performed by anyone regardless of personal skills. It is an object of the present invention to provide a method and an apparatus for diagnosing deterioration of a coating film capable of performing a proper diagnosis.
【００１４】[0014]
【課題を解決するための手段】本発明は、塗膜面に生じ
たブリスタを観察して塗膜の劣化状態を診断するように
している塗膜劣化診断方法であって、塗膜面に対して９
０゜より小さい傾斜した角度で光を塗膜面に向け投射す
ることによりブリスタによる影を塗膜面に生じさせ、ブ
リスタによってできた影の模様を、塗膜面に対して鉛直
方向からカメラにより撮影し、撮影した画像を画像処理
してその画像処理結果により塗膜の劣化状態を診断する
ことを特徴とする塗膜劣化診断方法、に係るものであ
る。SUMMARY OF THE INVENTION The present invention relates to a method for diagnosing deterioration of a coating film by observing blisters formed on the coating film surface and diagnosing the deterioration state of the coating film. 9
By projecting light at an angle of inclination smaller than 0 ° toward the paint film surface, a shadow by the blister is created on the paint film surface, and the shadow pattern created by the blister is projected from the direction perpendicular to the paint film surface by the camera. The present invention relates to a method for diagnosing deterioration of a coating film, wherein a photographed image is subjected to image processing, and a deterioration state of the coating film is diagnosed based on a result of the image processing.
【００１５】上記手段において、画像処理により、画像
の単位面積における影の模様の面積比と、画像の単位面
積における影の模様の個々の大きさの分布と、を得るよ
うにしてもよい。In the above means, the image processing may obtain an area ratio of the shadow pattern in a unit area of the image and a distribution of individual sizes of the shadow pattern in a unit area of the image.
【００１６】また、本発明は、塗膜面に沿うように設け
られた検出架台と、検出架台に設置され塗膜面に対して
９０゜より小さい傾斜角度を有して塗膜面に向け光を投
射する投光器と、検出架台に設置され投光器にて投光さ
れた塗膜面を塗膜面に対して鉛直方向から撮影するカメ
ラと、カメラにより撮影した画像信号を処理する画像処
理装置と、からなることを特徴とする塗膜劣化診断装
置、に係るものである。Further, according to the present invention, there is provided a detection base provided along the surface of a coating film, and a light base provided on the detection base and having an inclination angle of less than 90 ° with respect to the coating film surface and directed toward the coating film surface. And a camera that is installed on the detection stand and shoots the coating film surface projected by the floodlight from the vertical direction with respect to the coating film surface, and an image processing device that processes an image signal captured by the camera, And an apparatus for diagnosing deterioration of a coating film.
【００１７】本発明によれば、以下のように作用する。According to the present invention, the operation is as follows.
【００１８】塗膜面に対し、９０゜より小さい傾斜角度
で光を投射させることにより塗膜面にブリスタによる影
を生じさせ、この状態で塗膜面を鉛直方向からカメラに
て撮影することにより、ブリスタの影の模様を鮮明に撮
影することができる。このようにして得られた画像信号
を、画像処理装置に導いて画像処理することにより、単
位面積における影の模様の面積比、及び画像の単位面積
における影の模様の個々の大きさの分布を求め、この影
の模様の面積比、影の模様の個々の大きさの分布が設定
されたある値を超えているか否かを、作業員が数値を見
て判断するのみで、塗膜の劣化の状態を直ちに適確に診
断することができる。よって、塗膜の劣化の状態を、容
易にしかも個人差を生じることなく、正確に診断でき
る。By projecting light at an angle of inclination of less than 90 ° with respect to the coating film surface, a shadow of the blister is generated on the coating film surface, and in this state, the coating film surface is photographed by a camera from a vertical direction. , The shadow pattern of the blister can be clearly photographed. The image signal obtained in this manner is guided to an image processing device and subjected to image processing, whereby the area ratio of the shadow pattern in a unit area and the distribution of the individual size of the shadow pattern in the unit area of the image are calculated. Determining whether the area ratio of the shadow pattern or the distribution of the individual sizes of the shadow pattern exceeds a set value, the operator only judges by looking at the numerical value, Condition can be immediately and accurately diagnosed. Therefore, the state of deterioration of the coating film can be easily and accurately diagnosed without causing individual differences.
【００１９】[0019]
【発明の実施の形態】以下、本発明の好適な実施の形態
を図面に基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.
【００２０】図１〜図３は本発明の塗膜劣化診断装置の
一例を示したものである。図中、１６は検出架台であ
り、該検出架台１６は、前側台１７と後側台１８との間
を所要長さのガイド材１９により固定しており、前側台
１７の下部には左右の前部脚２０，２１が備えられ、ま
た後側台１８の下部には１本の鉛直に延びる後部脚２２
が設けられている。従って、前記ガイド材１９は、３本
の脚２０，２１，２２によりライナ７の塗膜面Ｐと略平
行になるように塗膜２３上に支持されるようになってい
る。FIGS. 1 to 3 show an example of the coating film deterioration diagnosis apparatus of the present invention. In the figure, reference numeral 16 denotes a detection base, which is fixed between a front base 17 and a rear base 18 by a guide member 19 of a required length. Front legs 20 and 21 are provided, and one vertically extending rear leg 22 is provided below the rear base 18.
Is provided. Therefore, the guide member 19 is supported on the coating film 23 by the three legs 20, 21, 22 so as to be substantially parallel to the coating surface P of the liner 7.
【００２１】前部脚２０，２１は、下方に向かって相互
の間隔が開くように傾斜して設けられており、且つ各前
部脚２０，２１は互いに嵌合する外筒２４ａと内筒２４
ｂとによって長さが調整可能に構成されており、更に各
内筒２４ｂの下端には、車輪２５が取付けられている。The front legs 20 and 21 are provided so as to be inclined downward so as to be spaced apart from each other, and each of the front legs 20 and 21 has an outer cylinder 24a and an inner cylinder 24 fitted to each other.
b, the length is adjustable, and wheels 25 are attached to the lower ends of the inner cylinders 24b.
【００２２】また、後部脚２２も互いに嵌合する外筒２
４ａと内筒２４ｂとによって長さが調整可能に構成され
ており、更に内筒２４ｂの下端には、キャスタ２６が取
付けられている。The rear leg 22 is also fitted with the outer cylinder 2.
The length is adjustable by the inner tube 4b and the inner tube 24b, and a caster 26 is attached to the lower end of the inner tube 24b.
【００２３】前記検出架台１６のガイド材１９には、そ
の長さ方向に沿ってスライド台２７が移動可能に設けら
れており、該スライド台２７には、塗膜面Ｐに対して９
０゜より小さい傾斜角度αを有して塗膜面Ｐに向けて光
Ｓを投射するようにした投光器２８が設けられている。
投光器２８は、傾斜角度αを任意に調整できるようにス
ライド台２７に取付けられている。The guide member 19 of the detection base 16 is provided with a slide base 27 so as to be movable along its length direction.
A light projector 28 having an inclination angle α smaller than 0 ° and projecting the light S toward the coating film surface P is provided.
The light projector 28 is attached to the slide table 27 so that the inclination angle α can be arbitrarily adjusted.
【００２４】また、前側台１７には、前記投光器２８に
より光が投射された塗膜面Ｐを破線で示すように上方か
ら鉛直に撮影して、画像信号を送信できるテレビカメラ
或いはデジタルカメラのようなカメラ２９が設けられて
いる。The front base 17 is provided with a television camera or a digital camera capable of vertically photographing the coating film surface P on which the light is projected by the projector 28 from above as shown by a broken line and transmitting an image signal. Camera 29 is provided.
【００２５】更に、カメラ２９にて撮影した画像信号
は、ケーブル３０を介して画像処理装置３１に導かれる
ようになっており、画像処理装置３１にて画像の処理が
行われるようになっている。画像処理装置３１には、画
像処理の結果を表示できるディスプレイ等の表示装置が
設けられていてもよく、また、図１、図３に示すように
画像処理装置３１とは別個に設けられたディスプレイ装
置或いはプリントアウト装置等の表示装置３２に画像処
理結果を表示するようにしてもよい。画像処理装置３１
は、検出架台１６上、或いは検出架台１６の近くに設置
するようにしてもよいが、ダイヤフラムフロア５の上
部、或いは格納容器本体２の外部のように診断作業がや
り易い離れた場所に設けるようにしてもよい。Further, an image signal photographed by the camera 29 is guided to an image processing device 31 via a cable 30 so that the image processing device 31 processes the image. . The image processing device 31 may be provided with a display device such as a display capable of displaying a result of the image processing, and a display provided separately from the image processing device 31 as shown in FIGS. The image processing result may be displayed on a display device 32 such as a device or a printout device. Image processing device 31
May be installed on the detection gantry 16 or near the detection gantry 16, but may be installed at an upper part of the diaphragm floor 5 or at a remote place where the diagnosis work is easy to perform, such as outside the containment body 2. It may be.
【００２６】上記検出架台１６は軽量に構成されてお
り、作業員が手で把持して持ち運んだり、または車輪２
５及びキャスタ２６により塗膜２３上を走行させて容易
に移動させることができ、また持ち運びのために前部脚
２０，２１及び後部脚２２が折り畳み可能に構成されて
いてもよい。The detection base 16 is configured to be light in weight, and can be carried by an operator while holding it by hand or using the wheels 2.
The front legs 20, 21 and the rear legs 22 may be configured to be foldable for easy transportation by running on the coating film 23 by the wheels 5 and the casters 26.
【００２７】以下に、上記形態例の作用を説明する。The operation of the above embodiment will be described below.
【００２８】図１〜図３に示した装置によって塗膜２３
の劣化を診断する際には、予め前部脚２０，２１と後部
脚２２の長さを調節することによりガイド材１９の高さ
を調節する。更に、カメラ２９に対するスライド台２７
の間隔位置を調節すると共に、投光器２８の向きを調整
して、カメラ２９の下部の塗膜面Ｐに投射する光Ｓの傾
斜角度αが塗膜面Ｐのブリスタを検出するのに最も適し
た角度になるように調整する。この時、傾斜角度αを小
さくすると、ブリスタによって生じる影が長くなり、且
つ、小さな膨らみのブリスタでも検出できるようにな
る。The coating film 23 is formed by the apparatus shown in FIGS.
When diagnosing the deterioration of the guide member 19, the height of the guide member 19 is adjusted by adjusting the lengths of the front legs 20, 21 and the rear leg 22 in advance. Further, the slide table 27 with respect to the camera 29
Is adjusted and the direction of the light projector 28 is adjusted so that the inclination angle α of the light S projected on the coating surface P below the camera 29 is most suitable for detecting the blister on the coating surface P. Adjust to an angle. At this time, if the inclination angle α is reduced, the shadow generated by the blister becomes longer, and even a blister having a small bulge can be detected.
【００２９】上記したように、ブリスタの検出に最も有
効な傾斜角度αで光Ｓを塗膜面Ｐに投射するように投光
器２８の位置と角度とを設定し、以後は設定された状態
を保って検出作業を行う。As described above, the position and angle of the light projector 28 are set so as to project the light S onto the coating film surface P at the inclination angle α most effective for blister detection, and the set state is maintained thereafter. To perform detection work.
【００３０】塗膜面Ｐに対して、投光器２８により傾斜
角度αで光Ｓを投射させると、塗膜面Ｐにブリスタが生
じている場合には、図４に示すように、塗膜面Ｐにブリ
スタによる影３３が生じることになる。When light S is projected onto the coating surface P by the light projector 28 at an inclination angle α, if a blister is generated on the coating surface P, as shown in FIG. , A shadow 33 due to the blister is generated.
【００３１】従って、塗膜面Ｐをカメラ２９によって撮
影すると、影３３の模様が鮮明に撮影され、この画像信
号がケーブル３０を介して画像処理装置３１に導かれ
る。Therefore, when the film surface P is photographed by the camera 29, the pattern of the shadow 33 is clearly photographed, and this image signal is guided to the image processing device 31 via the cable 30.
【００３２】画像処理装置３１では、画像処理を行って
単位面積における影３３の模様の面積比、及び画像の単
位面積における影３３の模様の個々の大きさの分布等を
求める。画像処理装置３１の処理結果は、表示装置３２
に数値で表示させることができる。The image processing device 31 performs image processing to obtain the area ratio of the pattern of the shadow 33 per unit area, the distribution of the individual sizes of the pattern of the shadow 33 per unit area of the image, and the like. The processing result of the image processing device 31 is displayed on the display device 32.
Can be displayed numerically.
【００３３】表示装置３２に表示された影３３の面積比
はブリスタの発生量を表わしており、また、影３３の模
様の個々の大きさの分布は、大きな面積の影３３の分布
が多いと塗膜２３の劣化が進んでいることを表わしてい
る。The area ratio of the shadows 33 displayed on the display device 32 indicates the amount of blisters generated. The distribution of the individual sizes of the patterns of the shadows 33 indicates that the distribution of the shadows 33 having a large area is large. This indicates that the deterioration of the coating film 23 is progressing.
【００３４】従って、表示装置３２に表示された影３３
の模様の面積比、及び影３３の模様の個々の大きさの分
布について、それらが設定されたある値を超えているか
否かを、作業員が数値を見て判断するのみで、塗膜２３
の劣化の状態を直ちに適確に診断することができる。よ
って、塗膜２３の劣化の状態を、容易にしかも個人差を
生じることなく、正確に診断できるようになる。Therefore, the shadow 33 displayed on the display device 32
With respect to the area ratio of the pattern and the distribution of the individual sizes of the pattern of the shadow 33, the worker only judges whether or not they exceed a set value by looking at the numerical values, and the coating film 23 is formed.
The state of deterioration can be immediately and accurately diagnosed. Therefore, the state of deterioration of the coating film 23 can be easily and accurately diagnosed without causing individual differences.
【００３５】尚、上記形態例の説明では、原子炉格納容
器のサプレッションチェンバのライナに設けられている
塗膜の劣化を診断する場合について説明したが、種々の
容器等に施される塗膜の劣化の診断にも適用できるこ
と、検出架台には種々の構成のものを採用し得ること、
車輪及びキャスターに代えてマグネット等を備えて作業
架台を鋼板に吸着できるようにすれば、底面の塗膜以外
に側面等の塗膜の診断にも適用できること、その他本発
明の要旨を逸脱しない範囲内において種々変更を加え得
ること、等は勿論である。In the above embodiment, the case of diagnosing the deterioration of the coating film provided on the liner of the suppression chamber of the containment vessel has been described. That it can be applied to the diagnosis of deterioration, that the detection platform can be of various configurations,
If the work platform can be attached to a steel plate by providing a magnet or the like instead of wheels and casters, it can be applied to the diagnosis of paint film on the side surface etc. in addition to the paint film on the bottom surface, and other ranges that do not depart from the gist of the present invention Of course, various changes can be made within the above.
【００３６】[0036]
【発明の効果】本発明によれば、塗膜面に対し、９０゜
より小さい傾斜角度で光を投射させることにより塗膜面
にブリスタによる影を生じさせ、この状態で塗膜面を鉛
直方向からカメラにて撮影することにより、ブリスタの
影の模様を鮮明に撮影することができる。このようにし
て得られた画像信号を、画像処理装置に導いて画像処理
することにより、単位面積における影の模様の面積比、
及び画像の単位面積における影の模様の個々の大きさの
分布を求め、この影の模様の面積比、影の模様の個々の
大きさの分布が設定されたある値を超えているか否か
を、作業員が数値を見て判断するのみで、塗膜の劣化の
状態を直ちに適確に診断することができる。よって、塗
膜の劣化の状態を、容易にしかも個人差を生じることな
く、正確に診断できるという優れた効果を奏し得る。According to the present invention, by projecting light at an inclination angle of less than 90 ° to the coating surface, a shadow of the blister is generated on the coating surface, and in this state, the coating surface is oriented in the vertical direction. By taking a picture with a camera from above, the shadow pattern of the blister can be clearly photographed. The image signal obtained in this manner is guided to an image processing device and subjected to image processing, whereby an area ratio of a shadow pattern in a unit area,
And the distribution of the individual size of the shadow pattern in the unit area of the image is obtained, and the area ratio of the shadow pattern, whether the distribution of the individual size of the shadow pattern exceeds a set value or not. The operator can immediately and accurately diagnose the state of deterioration of the coating film only by looking at the numerical value and making a judgment. Therefore, an excellent effect of easily and accurately diagnosing the state of deterioration of the coating film without causing individual differences can be obtained.
【図１】本発明の塗膜劣化診断装置の形態例を示す側面
図である。FIG. 1 is a side view showing an embodiment of a coating film deterioration diagnosis apparatus of the present invention.
【図２】図１のＩＩ−ＩＩ方向矢視図である。FIG. 2 is a view taken in the direction of arrows II-II in FIG.
【図３】図１のＩＩＩ−ＩＩＩ方向矢視図である。FIG. 3 is a view in the direction of arrows III-III in FIG. 1;
【図４】本発明における光の投射によってブリスタの影
が塗膜面に生じる状態を示す平面図である。FIG. 4 is a plan view showing a state in which a shadow of a blister is generated on a coating film surface by projecting light in the present invention.
【図５】コンクリート製原子炉格納容器（ＰＣＶ）の一
例を示す切断側面図である。FIG. 5 is a cut-away side view showing an example of a concrete reactor containment vessel (PCV).
７ 鋼製ライナ（ライナ） １６ 検出架台 ２３ 塗膜 ２８ 投光器 ２９ カメラ ３１ 画像処理装置 ３３ 影 Ｐ 塗膜面 Ｓ 光 α 傾斜角度（角度） 7 Steel liner (liner) 16 Detection stand 23 Coating film 28 Projector 29 Camera 31 Image processing device 33 Shadow P Coating surface S Light α Incline angle (angle)
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｇ２１Ｃ 13/00 Ｇ２１Ｃ 13/00 Ｒ 17/003 17/00 Ｅ Ｆターム(参考） 2G002 AA03 CA02 DA01 EA02 EA12 2G051 AA83 AB12 AB20 BB01 CA04 EA16 ED21 2G075 AA03 BA17 CA26 DA09 DA14 DA15 EA03 FA13 FB04 FB08 FC14 GA15 GA21 GA24 4D075 AA81 4F042 AA16 DH09 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (reference) G21C 13/00 G21C 13/00 R 17/003 17/00 EF term (reference) 2G002 AA03 CA02 DA01 EA02 EA12 2G051 AA83 AB12 AB20 BB01 CA04 EA16 ED21 2G075 AA03 BA17 CA26 DA09 DA14 DA15 EA03 FA13 FB04 FB08 FC14 GA15 GA21 GA24 4D075 AA81 4F042 AA16 DH09
Claims (3)
の劣化状態を診断するようにしている塗膜劣化診断方法
であって、塗膜面に対して９０゜より小さい傾斜した角
度で光を塗膜面に向け投射することによりブリスタによ
る影を塗膜面に生じさせ、ブリスタによってできた影の
模様を、塗膜面に対して鉛直方向からカメラにより撮影
し、撮影した画像を画像処理してその画像処理結果によ
り塗膜の劣化状態を診断することを特徴とする塗膜劣化
診断方法。A method for diagnosing deterioration of a coating film by observing blisters generated on the coating film surface, wherein the angle of inclination of the coating film surface is smaller than 90 °. By projecting light toward the paint film surface to create a shadow by the blister on the paint film surface, the shadow pattern created by the blister is photographed by the camera from the vertical direction to the paint film surface, and the photographed image is taken A method for diagnosing deterioration of a coating film, comprising: performing image processing and diagnosing a deterioration state of the coating film based on the image processing result.
る影の模様の面積比と、画像の単位面積における影の模
様の個々の大きさの分布と、を得るようにしていること
を特徴とする請求項１記載の塗膜劣化診断方法。2. The method according to claim 1, wherein the image processing obtains an area ratio of a shadow pattern in a unit area of the image and a distribution of individual sizes of the shadow pattern in a unit area of the image. The method for diagnosing deterioration of a coating film according to claim 1.
と、検出架台に設置され塗膜面に対して９０゜より小さ
い傾斜角度を有して塗膜面に向け光を投射する投光器
と、検出架台に設置され投光器にて投光された塗膜面を
塗膜面に対して鉛直方向から撮影するカメラと、カメラ
により撮影した画像信号を処理する画像処理装置と、か
らなることを特徴とする塗膜劣化診断装置。3. A detection pedestal provided along the surface of the coating film, and a projector mounted on the detection pedestal and projecting light toward the coating film surface with an inclination angle of less than 90 ° with respect to the coating film surface. A camera installed on the detection stand and taking a picture of the coating film projected by the projector from the vertical direction with respect to the coating film face, and an image processing device for processing an image signal taken by the camera. Characteristic coating film deterioration diagnostic device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000003560A JP4379996B2 (en) | 2000-01-12 | 2000-01-12 | Coating film deterioration diagnosis method and apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000003560A JP4379996B2 (en) | 2000-01-12 | 2000-01-12 | Coating film deterioration diagnosis method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001194483A true JP2001194483A (en) | 2001-07-19 |
| JP4379996B2 JP4379996B2 (en) | 2009-12-09 |
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ID=18532490
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000003560A Expired - Fee Related JP4379996B2 (en) | 2000-01-12 | 2000-01-12 | Coating film deterioration diagnosis method and apparatus |
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| JP2007263727A (en) * | 2006-03-28 | 2007-10-11 | Ihi Corp | Visual inspection device for underwater painted film |
| JP2009118585A (en) * | 2007-11-02 | 2009-05-28 | Chugoku Electric Power Co Inc:The | Deterioration diagnosis device of power distribution equipment |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP4379996B2 (en) | 2009-12-09 |
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