Proposal for a scaling activity

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, demonstrating a high “User effect in scaling”: - There is a need to give Guidelines for scaling when designing a facility and/or 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 pursued in licensing or safety analysis. This is connected with the acceptance criteria for scaling distortions and with the quantification of uncertainty due to scaling (e.g. conclusion of the CSNI Scaling SoAR).