Requirements for developing high temperature creep life models for ageing pipework systems using power plant condition monitoring and inspection data

A novel creep life assessment methodology is proposed in this paper that uses periodic and routine inspection data in conjunction with online operational data and other computed parameters, such as the ‘rate of change’, and where applicable correlations with data from small specimen tests on ex-service materials. The proposed methodology is critically implemented by the introduction of a life assessment transfer function (LATF). This enables the...