Improvements in Pressure Tube Diametral Creep Predictions and Statistical Error Modeling

Abstract

The improvements in the uncertainty estimation and model predictions of pressure tube diametral creep in CANDU fuel channels using a statistical error modeling method is presented in this paper. The statistical error modeling was successfully completed using real inspection data from the Bruce B CANDU reactor. The result was a methodology, which ensured a more accurate and realistic approach in predicting pressure tube diameter and estimates of the modeling uncertainties when compared to more commonly used statistical methods.