ULTRASONIC FLAW DETECTOR AND INSPECTION METHOD FOR JET PUMP BEAM

To enable ultrasonic flaw detection on an inspection object to be carried out with high accuracy in a reduced execution period.SOLUTION: The present invention is constituted by comprising: an ultrasonic probe 21 for propagating an ultrasonic wave to a jet pump beam 3 via cooling water W as a medium,...

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Bibliographische Detailangaben
Hauptverfasser:	URAGUCHI KOHEI, KAMEYAMA IKUKO, SASAKI SHUNSUKE, MIYAKE HARUYA, YAMAMOTO SETSU, MIHASHI TADAHIRO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR REACTORS PHYSICS TESTING
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Beschreibung
Zusammenfassung:	To enable ultrasonic flaw detection on an inspection object to be carried out with high accuracy in a reduced execution period.SOLUTION: The present invention is constituted by comprising: an ultrasonic probe 21 for propagating an ultrasonic wave to a jet pump beam 3 via cooling water W as a medium, without touching a top face 14 of the jet pump beam 3; a scanning mechanism (top face first scanning mechanism 25, top face second scanning mechanism 26) installed to a device frame 22, for moving the ultrasonic probe 21 in a second direction orthogonal to the top face 14 of the jet pump beam 3 and causing it to scan; and a fixing mechanism 23 for fixing and attaching the device frame 22 to the jet pump beam 3.SELECTED DRAWING: Figure 5 【課題】検査対象物に対する超音波探傷を高精度に且つ施工工期を短縮して実施できること。【解決手段】ジェットポンプビーム３の上面１４に対し非接触で、冷却水Ｗを媒体としてジェットポンプビーム３に超音波を伝播させる超音波探触子２１と、装置フレーム２２に設置されて超音波探触子２１をジェットポンプビーム３の上面１４に対して直交する２方向に移動させて走査させる走査機構（上面第１走査機構２５、上面第２走査機構２６）と、装置フレーム２２をジェットポンプビーム３に固定して取り付ける固定機構２３と、を有して構成されたものである。【選択図】図５