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Scaling Analysis

BES-VUEM Scaling Analysis

Day 1
• Opening, Introduction, Scope and Content of the training
• The Scaling Issue
• Overview of Scaling Methodologies
   o Power to Volume Ratio (Volumetric Scaling)
   o Three-level Scaling Approach
   o Triad Method Scaling Approach
   o Hierarchical, Two-Tiered Scaling Approach (H2TS)
   o Fractional Scaling Analysis (FSA)
• Available data for scaling studies
• Some examples of based on Separate Effects Tests (SET) and Integral Effects Tests (IET)
   o Pressure Responses of Reactor and Containment Vessels
   o Countercurrent  Flows
   o Mixing and Natural Circulation in Containment Vessel
   o Mixing and Boron Dilution in Reactor Vessels


Day 2
• Evaluation Model Development and Assessment Process (EMDAP)
• Role of Scaling Analysis in EMDAP
   o Scalability of Separate and Integral Effects Tests
   o Scalability of Thermal Hydraulics System codes
• Hierarchical approach used in H2TS and FSA
• Time Scaling approach in H2TS and FSA
• System Decomposition and Scale Identification
• Top-down System Scaling Analysis
• Bottom-up Process Scaling Analysis
• Exercise of System Decomposition for IET related to Small Modular Reactor (SMR)
• Exercise of Accident Scenario Decomposition in Time Sequences for IET related to SMR


Day 3
• Derivation of Reactor Vessel Pressure Response Equation based on FSA
• Derivation of Reactor Vessel Liquid Level Response Equation based on FSA
• Quantification of Phenomena Identification and Ranking Table (PIRT) and Distortions  
• Exercise of improving test facility and Thermal Hydraulics System code based on the performed FSA


Day 4
• The qualification process of a NPP Evaluation Model
• The Kv Scaled Analysis
• Exercise: Kv Scaled Calculation:
   o the Reference NPP and the selected scenario
   o Selection of the ITF and associated Experiment
   o Scaling of the Boundary Conditions


Day 5
• Exercise: Kv Scaled Calculation
   o Setting of the Initial Conditions and I&C system
   o Running and Analysis of the Kv Scaled calculation
   o Sensitivity Analysis of the Kv Scaled calculation
• Example: The Qualification Process of CNA-II NPP Evaluation Model, a licensing case
• V&V Automation Software for Maximum Regulatory Transparency and Traceability
• Questions, Open Issues and Individual Consultations
• Closing of the training and release of the Certificate of Attendance