This study focused on an initial stage of PWSCC, observed and considered the oxide layer on alloy 600 using three-point bending specimens immersed in 360 °C・30 ml/kg DH and 345 °C・15 ml/kg DH. Crevasses of oxide film along grain boundaries were observed on their surfaces. These conditions are close to chemical equilibrium boundary of Ni/NiO, inhibit the growth of the oxide film on grain boundaries due to lack of oxidizable-Ni and Cr. There is a possibility that their material surfaces in vicinity of grain b...
英字タイトル:
Effect of Dissolved Hydrogen For Oxide Film And Initiating Stress Corrosion Cracking Of Alloy 600 In PWR Primary Water

At the case of the replacement of instrumentation and/or control system for the common and large capacity facilities such as a compressed service air supply system, it is very important to proceed this work in short period and without any influence to the operation of many number of this users. In order to realize this fundamental requirement, enough consideration, evaluation ,and countermeasures to the risk by FMEA have been executed since planning stage. By means of these activities, a stable operation...
英字タイトル:
Achievement of the replacement of the instrumentation and control system during continuous operation of the common and large capacity facilities