[en] A fracture mechanics analysis of stress corrosion crack extension in sensitized weldments in BWR recirculation piping is performed. The results are then combined with estimates of crack detection probability to assess the influence of pre-service and in-service examinations in reducing the probability of loss of pipe integrity. Best-guess estimates are made in the many instances where precise information is lacking, and the sensitivity of the calculated results to the estimated values is assessed. The most influential factor in the analysis was found to be the residual stress due to welding