ABSTRACT
This paper summarises the incidence of reheat cracking which has been detected in as-welded austenitic components in British Energy’s Advanced Gas Cooled Reactor plant. A model for predicting the incidence of the initiation of such cracking is described. The associated materials data required as input to the model are discussed, as are the materials data required for assessing the remaining life of the components. It is shown that the material creep ductility is an important input and that strain rate and triaxiality are important factors which affect this ductility.
