Steam Generator Deposit Mapping

Abstract

Quantifying the deposit loading on the outside diameter of Steam Generator tubing provides valuable input to a long-term asset management model of the Secondary Plant. AREVA's Steam Generator Deposit Mapping uses data from the Eddy Current Testing (ECT) method to quantify this deposit loading. Analysis of the raw data enables construction of 3-dimensional and/or time-varying models that help estimate heat transfer loss and project future deposit loading. This paper presents one approach to a systematic program of Deposit Mapping using plant-specific reference standards and 3-dimensional modeling software to assess and project the deposit loading condition of steam generators.