In recent years, there have been considerable advancements in tubing eddy current testing technology and also much better knowledge of tubing degradation mechanisms and which EC inspection techniques can be best used for detection. Also, improvements in analysis and interpretation of eddy current data and use of these data for predicting early signs of tubing degradation have been developed. A proactive SG ageing management programme uses the results of the life assessment work, couples it with these advanced inspection and interpretation techniques, and then develops an enhanced SG tubing inspection programme for plausible tubing ageing degradation. The objective is to have as-early-as-possible identification of any possible tubing degradation by focusing inspection effort on the “age — sensitive” regions of the tube bundle with appropriate techniques capable of detecting the plausible degradation. Typical examples of information not previously available from eddy current inspection, but now available, is quantification of the depth and extent of deposits on the tubing primary side, and detection of tube-to-support gaps for use in vibration and fretting wear assessments.