Affiliations: [a] H.H. Wills Physics Laboratory, School of Physics, University of Bristol, Bristol BS8 1TL, UK | [b] Interface Analysis Centre, School of Physics, University of Bristol, Bristol BS8 1TL, UK
Abstract: The UK is entering a new era for civil nuclear power which involves extending the operating life of existing plant, building new plant and designing plant for future fission reactors (Gen IV). The latter two will be required to operate for periods which present challenges for the present materials and methodologies. This paper reviews these potential challenges in the context of the current understanding of materials performance and existing assessment methodologies. In addition, it provides an example of an unexpected creep-related challenge arising from long term operation of Type 316H boiler tubes.
Keywords: Nuclear boilers, stainless steel, creep, impurity elements, precipitation service life