Inspection and repair techniques in reactor vessel of the experimental fast reactor JOYO; Investigation and design for retrieval device of bent MARICO-2 test subassembly

Ashida, Takashi; Miyamoto, Kazuyuki; Okazaki, Yoshihiro*; Ito, Hideaki

In the experimental fast reactor Joyo, failure of disconnecting the irradiation test subassembly MARICO-2 (Material Testing Irradiation Rig with Temperature Control) was occurred and top of the MARICO-2 test subassembly was bent onto the in-vessel storage rack. As a result of this incident, the operation area of rotating plug for the fuel exchange in Joyo is limited. The replacement of the damaged UCS and retrieving the bent MARICO-2 are required to Joyo restoration. This report describes about investigations and some tests to know the status of MARICO-2 test subassembly and the optimized detail design of retrieval device reflecting those results.

Language	:	Japanese
Report No.	:	JAEA-Technology 2012-047
Pages	:	106 Pages
Publication Year/Month	:	2013/06
Patent information	:
PDF	:	JAEA-Technology-2012-047.pdf:11.09MB JAEA-Technology-2012-047-appendix(CD-ROM).zip:15.46MB
Paper URL	:	https://doi.org/10.11484/jaea-technology-2012-047
Keywords	:	no keyword
Research Facility	:
Press Release	:
Article of JAEA R&D Review	:	Demonstration of the In-Vessel Repair Technology within the Fast Reactor "JOYO"; Replacement of a Large Structure and Retrieval of a Deformed Test Subassembly[/]
Cooperating Institute	:
Other institute's report number	:

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Registration No. : TN20120047
JAEA Abstracts No. : 41000745

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