Techniques of fuel-number imaging with ITV camera and ultrasonic waves for BWR's loaded fuel subassembly.
Year: 1987
Type: article
Abstract: An experimental investigation of automatic fuel-number imaging for BWR's fuel subassemblies has been carried out to reduce the time and the mental load of operators for fuel-number confirmation. The experiments have been conducted for clear imaging with lighting and industrial television camera, and with ultrasonic waves. Following points were clarified:(1) Clear binary-valued character patterns can be obtained by means of sequential two directional lighting and subsequent image processing, and the same lighting technique can be applied to new or old fuel subassemblies, since this technique is based on the geometrical features of the carved characters.(2) Fuel-number images can be obtained by scanning ultrasonic waves on the carved character surface, which is buried in thick cladding mud (such carved characters can be hardly imaged with ITV cameras).
DOI: 10.3327/jaesj.29.815
Authors: Takashi OKAMURA, Kazumi SASAKI, Takeshi MIZUTANI, Atsushi SHIMADA, Mitsuo MATSUI, Masaaki MIZUNO, Makoto SENOO, Masayoshi SASAKI
Institutions: TEPCO (Japan), Chubu Electric Power (Japan)
Language: English
Subfield: Safety, Risk, Reliability and Quality
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2332578615