In the experimental fast reactor “Joyo”, it was confirmed that the top of the irradiation test sub-assembly (S/A) of “MARICO-2” (material testing rig with temperature control) had been bent onto the in-vessel storage rack as an obstacle, and the MARICO-2 S/A had been stuck in the transfer pot owing to its deformation. Since the MARICO-2 S/A cannot be retrieved with the existing handling equipment, special handling equipment was developed while considering the anomalous conditions. Emphasis had been pla...
英字タイトル:
Development of repair techniques in the reactor vessel of the experimental fast reactor Joyo . Retrieval of the MARICO-2 test subassembly .

Stress corrosion cracking of welding portion has found in many domestic and foreign BWR reactor internals and Primary Loop Recirculation piping. Also, repair and preventive maintenance technologies for SCC has been developed and/or adopted to BWRs in recent years. This paper introduces the sample of these technologies, such as seal-welding fo r SCC on BWR reactor internals, preventive maintenance technology for PLR piping such as Corrosion Resistant Cladding, Internal Polishing and Induction Heating Stress...
英字タイトル:
Repair and Preventive maintenance Technology for BWR Reactor Internals and Piping

Electronic Journal of Advanced Maintenance (EJAM) ha s been issued on the website of Japan Society of Mai ntenology (JSM) on May 25th, 2009 This report introd uces EJAM website structure and Editorial Operation....
英字タイトル:
Introduction of Electronic Journal of Advanced Maintenance Website Structure and Editorial Operation