Probabilistic analysis of flow-accelerated corrosion in French PWR: The probabilistic module of BRT-CICERO Version 2

摘要

This paper presents the probabilistic approach launched by Electricite de France (EDF) to master the flow-accelerated corrosion phenomenon, that concerns the carbon steel secondary-system pipes of pressurized water reactors. After a presentation of the physical phenomenon, it is given an overview of the existing deterministic computer program BRT-CICERO Version 1, currently used in EDF nuclear plants ; then the probabilistic module of the version 2 is presented, together with the numerical methods employed to compute the underthickness probabilities. Finally, future applications of BRT-CICERO are described.