Laser technology for maintenance of nuclear pipe

Seiichiro Kimura; Wataru Kono; Nami Sasaki; Tadashi Ogawa; Yuji Takiguchi; Haruhiko Iizuka; Eisuke Tada; Kiyoshi Oka; Alessandro Tesini; Kiyoshi Shibanuma; Masayuki Ikeda

doi:10.1117/12.281080

18 August 1997 Laser technology for maintenance of nuclear pipe

Seiichiro Kimura, Wataru Kono, Nami Sasaki, Tadashi Ogawa, Yuji Takiguchi, Haruhiko Iizuka, Eisuke Tada, Kiyoshi Oka, Alessandro Tesini, Kiyoshi Shibanuma, Masayuki Ikeda

Author Affiliations +

Proceedings Volume 3097, Lasers in Material Processing; (1997) https://doi.org/10.1117/12.281080
Event: Lasers and Optics in Manufacturing III, 1997, Munich, Germany

Abstract

A remote maintenance technology to process cooling pipes internally for the ITER (International Thermonuclear Experimental Reactor) has been developed. The fundamental welding properties of austenite stainless steel obtained by using high power YAG laser indicates the tendency of porosity increase as the welding depth increases. It is also found out that the occurrence of porosity was prevented when N₂ gas was used as a shielding gas and that the material strength of weld joint is kept unchanged. Furthermore, a processing equipment that can access the cooling pipes internally has been developed. The main body of this processing equipment can be inserted into a cooling pipe and consists of an focusing optics, clamping and driving mechanism, and an optical fiber. Operational experiments of this processing equipment is carried out and the basic verification experiments such as welding and cutting tests were conducted. As a result, a good quality of pipe welding joint was obtained without any defects.

Citation Download Citation

Seiichiro Kimura, Wataru Kono, Nami Sasaki, Tadashi Ogawa, Yuji Takiguchi, Haruhiko Iizuka, Eisuke Tada, Kiyoshi Oka, Alessandro Tesini, Kiyoshi Shibanuma, and Masayuki Ikeda "Laser technology for maintenance of nuclear pipe", Proc. SPIE 3097, Lasers in Material Processing, (18 August 1997); https://doi.org/10.1117/12.281080

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available