Cladding Operation using alloy 690 with high SCC resistance is an effective measure for protection against PWSCC of all oy 600. To apply the Cladding Operation for Reactor Vessel Outlet Nozzle, Temper Bead Technique for low alloy steel was established and some kinds of remote controlled tools were developed. The first Cladding Operation for Reactor Vessel Ou tlet Nozzle was applied to a Japanese PWR Plant in November 2004,and the Cladding Operation was successfully completed. ...
英字タイトル:
The Cladding of PWR Reactor Vessel Outlet Nozzle

Preventive maintenance techniques against PWSCC found in Alloy 600 welds have been applied progressively, however, in February 2008, a defect of PWSCC had been found in an outlet nozzle to safe-end weld of Reactor vessel of PWR in Ohi Nuclear Power Station Unit 3 during an outage. Then the defect was removed and after its safety was confirmed, the unit was placed in operation. In the next outage, INLAY method using the cylindrical container was applied an d repair welding for the removed part was performed...
英字タイトル:
INLAY Method Using the Cylindrical Container for Reactor Vessel Outlet Nozzle of PWRfor Ohi Nuclear Power Station

Recently, the particularity of the working environment in the field of space and oceanic research lead to evelop the remote handling technology and the remote maintenance technology. Additionally, in the field f nuclear technology, such as hot laboratory, it is very important to develop the remote maintenance echnology. Espec ially, in the case of the hot laboratory to handle the irradiated fuel assembly containing he plutonium, the large scale cell equipped with shielding ability and sealing performance i...
英字タイトル:
Applying the remote maintenance technology to the Large scale hot laboratory