Development of bore tools for blanket cooling pipe connection in ITER

Author

Itoh, A. ; Oka, K. ; Kakudate, S. ; Obara, K. ; Taguchi, K. ; Tada, E. ; Tesini, A. ; Shibanuma, K. ; Haange, R.

Author_Institution

JAERI, Ibaraki, Japan

Volume

2

fYear

1997

fDate

6-10 Oct 1997

Firstpage

921

Abstract

According to the ITER R&D program, the bore tools for welding, cutting and weld inspection of blanket cooling pipes by the in-pipe access have been developed. In order to meet the ITER requirements, the YAG laser transmitted through a flexible optical fiber and the electro-magnetic acoustic transducer (EMAT) were adopted for welding/cutting and weld inspection, respectively. Their performance have been verified, including the movement and positioning in the cooling pipes. In addition, the radiation hard ultrasonic transducer (UT) and the leak detectors have been also tested. This paper describes the design outline and test results of bore tools developed for welding, cutting and weld inspection of the ITER blanket cooling pipes

Keywords

acoustic transducers; cutting; fusion reactor safety; nuclear reactor maintenance; tools; welding; ITER; YAG laser; blanket cooling pipe connection; blanket cooling pipes; bore tools; cooling pipes; cutting; electro-magnetic acoustic transducer; leak detectors; ultrasonic transducer; weld inspection; welding; Acoustic testing; Acoustic transducers; Boring; Cooling; Fiber lasers; Inspection; Laser beam cutting; Optical fibers; Ultrasonic transducers; Welding;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 1997. 17th IEEE/NPSS Symposium

Conference_Location

San Diego, CA

Print_ISBN

0-7803-4226-7

Type

conf

DOI

10.1109/FUSION.1997.687774

Filename

687774