Proposal for a data bank to archive input data, results of measurement, and prediction of erosion corrosion damage of the secondary circuit at the Temelin NPP

The basic parameters used in the assessment of the erosion corrosion damage of the secondary circuit are defined. The input data for the secondary circuit system are divided into groups which represent the following: (1) the reactor unit; (2) reactor power and thermodynamic conditions of the secondary circuit; (3) plant chemistry; (4) plant operation cycles and outages; (5) pipe lines, defining the logical subsystems of the secondary circuit; (6) segments, i.e. pipe lines with homogeneous thermodynamic and chemical parameters; (7) components, i.e. parts of segments which are usually bounded by connecting welds and fall into a unique geometric classification as defined by the CHECWORKS Computer Program User Guide; (8) inspection data; and (9) results of modelling. The requirements for data accuracy are specified and the responsibilities for their acquisition, filing and updating are laid down. (P.A.)