Proposal for a FONESYS-SILENCE activity on scaling methods

Several scaling methods and scaling criteria are available for PWR IET design: Power-to-Volume Scaling , 3-level Ishii scaling, H2TS, FSA, DSS... All scaling methods identify scaling distortions and try to minimize them. Various scaling criteria were applied in various existing IET, showing a high “User effect in scaling”: - There is a need to give Guidelines for scaling an integral test for a specific transient. - There is a need to identify a qualitative and quantitative framework (precision targets) for judging the quality of a scaling approach. This is connected with the acceptance criterion for scaling distortions and with the quantification of uncertainty due to scaling. (Conclusion of the CSNI Scaling SoAR).