論文
ステンレス鋼溶接金属を透過した超音波探傷性能 の確認結果(第 2 報)
著者:
瀬良 健彦,Takehiko SERA,高田 泰和,Yasukazu TAKADA,棚橋 晶,Akira TANAHASHI,関 伊佐夫,Isao SEKI
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Japanese code for ultrasonic testing in-service inspection, named JEAC 4207, allows inspection through weld metal, in case that some factors, such as weld crown or other structures, disturb scanning. The applicability of through weld metal inspection had been reported with BWR piping. This paper will be technical basis of applicability of through weld metal inspection for PWR piping, which is thicker and has factor hardens inspection. The data successfully shows the capability for detection and sizing...
英字タイトル:
Result of UT Verification Test for Stainless Steel through Weld Deposit (2nd Report)
第15回
原子力発電所における高精度ECTプローブ開発の歴史
著者:
難波 一成,神納 健太郎,黒川 正秋,関 伊佐夫,鶴田 孝義,(三菱重工)
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To confirm the soundness of component of nuclear power plants, NDE techniques are applied. Especially, ECT is applied as the volumetric inspection for heat transfer tubes of heat exchangers, and as the surface inspection for weld zone. The materials of them have good corrosion resistance, but they had many experience of occurring flaw because plant-operating period became so longer. We developed various types of high performance ECT probe in order to detect every types of flaws which are occurred, and which...
英字タイトル:
History of development of high performance ECT probe applied in nuclear power plants
第10回
高温用薄膜UTセンサを用いた 高精度な厚さ測定・減肉傾向監視技術の開発 Development of thickness measurement and thickness trend monitoring
著者:
藤田 直樹,Naoki FUJITA,関 伊佐夫,Isao SEKI,松浦 貴之,Takayuki MATSUURA,山本 裕子,Yuko YAMAMOTO,黒川 政秋,Masaaki KUROKAWA
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In order to solve the problems of the thickness measurement, we have developed a thin-film UT sensor having excellent high-temperature durability and conformability in thin film form. In this paper, it was confirmed that the accuracy of thickness measurement for both complex geometries and plates at high-temperature was equivalent to the accuracy of conventional thickness measurement methods. It was also confirmed that the durability at high temperature and for temperature change in the actual equipmen...
英字タイトル:
technology using high-temperature thin-film UT sensor
第12回
高温用薄膜UTセンサを用いた配管減肉のモニタリング
著者:
鶴田 孝義,Takayoshi TSURUTA,小平 武志,Takeshi KODAIRA,山本 裕子,Yuko YAMAMOTO,関 伊佐夫,Isao SEKI,松浦 貴之,Takayuki MATSUURA
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As for periodical measurement of pipe wall thinning, several concerns are indicated, such as unstability of measurement position and contact condition, additional work for removal of insulating material and preparing scaffold, unstability on complex geometry and difficulty of continuous monitoring under plant operation. In order to solve these concerns, we developed thin-film UT sensor which has high-temperature durability and flexibility. Furthermore, we preliminary developed prototype linear phased-a...
英字タイトル:
Monitoring of pipe wall thinning using high-temperature thin-film UT sensor