...Izumi Nakamura; Akihito Otani; Masaki Shiratori Pressurized piping systems used for an extended period may develop degradations such as wall thinning or cracks due to aging. It is important to estimate the effects of degradation on the dynamic behavior and to ascertain the failure modes...

...Dejan Mitrović; Dragoljub Zivkovic Fatigue is one of the most important aging effects of power plant components. Information about fatigue helps in assessing structural degradation of the component and so assists in planning in-service inspection and maintenance. In this paper, we present...

...Weiju Ren; Robert Swimdeman To understand the response of Alloy 617 to long-time exposure conditions and to determine the supplementary data needs for structural components in Gen IV nuclear reactors, literature of aging and aging effects in the alloy was reviewed. Most of the reviewed data were...

...Xinjian Duan; Michael J. Kozluk; Sandra Pagan; Brian Mills Aging steam generator tubes have been experiencing a variety of degradations such as pitting, fretting wear, erosion-corrosion, thinning, cracking, and denting. To assist with steam generator life cycle management, some defect-specific flaw...

... decrease as the chromium content increases at a given temperature ( 3 ). The aging infrastructure of most power plants around the world and the cost associated with maintenance triggered the search for prediction methods for prediction of the remaining life of critical components. Development...

...Yasuhide Asada This series of papers has been issued to give general views on recent Japanese activities related to nuclear codes and standards. Part II of the series describes component aging aspects and future trends. The component aging aspects include evaluation methods for vessels based...

...David W. Gandy; Shane J. Findlan; R. Viswanathan As the U.S. fleet of fossil power plants age, utilities are forced to perform more and more repairs on such components as turbine casings, main and reheat piping, headers, and other components that have experienced high-temperature degradation...

...R. Viswanathan, Technical Fellow,; D. Gandy, Manager, Power plant piping operating at elevated temperatures is subject to several types of service aging-related degradation, such as softening, spheroidization, embrittlement, and creep. When cracks are found in these components, weld repair is often...