Restoration for damaged components in reactor vessel of the experimental fast reactor Joyo

摘要

In this preparative work for the restoration of Joyo, a series of equipment needed for the restoration work has been successfully designed and developed. The n-UCS and all the necessary equipment are currently being manufactured. A full ex-vessel test is scheduled in 2013 to verify performance and establish the final work procedure, and then, the replacement of the UCS and the retrieval of the MARICO-2 S/A will be conducted in 2014. The restoration work on Joyo will provide valuable experience and insight into further improvements and verification of repair techniques for sodium-cooled fast reactors. Ultimately, Joyo will play a key role not only in fast reactor cycle technology development but also a wide variety of science and technology fields including the fast neutron irradiation bed.