Performance Test of Core Protection and Monitoring System with DLL for SMART Simulator Implementation

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1 2014 KNS Spring Meeting in Jeju Performance Test of Core Protection and Monitoring System with DLL for Simulator Implementation BonSeung Koo, DaeHyun Hwang and KeungKoo Kim May 29-30, 2014 Korea Atomic Energy Research Institute

2 INTRODUCTION The Korea Atomic Energy Research Institute (KAERI) Has Developed a System-integrated Modular Advanced ReacTor () for a seawater desalination and electricity generation with 330MW thermal power Standard Design Approval (SDA) was granted on July 4 th, 2012 by Korea Nuclear Safety and Security Commission This marks the first license for an integral-type reactor in the world Enhances the Inherent Safety by Adopting Design Features Low linear power density (reduce fuel and cladding temperatures) Has a large reactor coolant system volume (allow more time for safety system response in accident) Small penetration at high elevation (increase coolant left in reactor vessel after a small break of coolant accident) 2

3 INTRODUCTION Accordingly, Online Digital Core Protection and Monitoring System was Needed and Developed for Newly Developed Integral Reactor, SCOPS ( CORE PROTECTION SYSTEM) SCOMS ( CORE MONITORING SYSTEM) Now, a Multi-Purpose Best-Estimate Simulator for is being Established as a Tool to Evaluate the impacts of design change on safety performance Improve & optimize the operating procedures of Real-Time Model was Developed on the Basis of SCOPS/SCOMS Algorithm SCOPS_SSIM & SCOMS_SSIM Simulator Version In this Presentation, Performance Test with DLL File was Performed for Various Simulation Scenarios 3

4 OVERVIEW Major Design Parameters of Design parameters Values Reactor type Operating pressure, MPa SG inlet temperature, C SG outlet temperature, C Min. design flow, kg/sec Coolant Fuel Integral ,090 H 2 O UO 2 ( < 5.0w/o) Configuration of 4

5 REAL-TIME MODEL DEVELOPMENT SCOPS_SSIM and SCOMS_SSIM Code are being Developed and will be Loaded as a DLL File in Simulator Platform Each Code Receives System Variables, Performs Core Protection or Monitoring Algorithms and then Returns Calculated Variables Software Design Bases and Performance Requirements are Setup I/O Variables, How to Execute Software and How to Connect Software with Simulator are Setup In Model Development, Some Algorithms are Improved DNBR Calculation Real-time 3D Power Synthesis Backtrack & Snap Calculation 5

6 REAL-TIME MODEL DEVELOPMENT Digital Type Core Protection System Perform Trip/Pretrip Function - Primary (DNBR & LPD) - Auxiliary (Range, VOPT, Etc) Fast Response Algorithm How to Connect with Simulator Procedure for DLL Performance Test 6

7 REAL-TIME MODEL DEVELOPMENT SCOMS_SSIM Power Distribution (Radial & Axial) 7

8 DLL PERFORMANCE TEST Several Test Cases were Selected to Verify Input/Output Processing Performance & Justness of Real-time Algorithm Input Signals were Arbitrary Simulated for Steady-State and Transient Conditions Various Simulation Cases were Tested as: Trip(or pretrip)/lco variables generation Power(1 st, 2 nd, and T/B) calculation DNBR/LPD calculation Power distribution synthesis POL calculation And Real-time Performance of Most Test Cases All DLL Test Results Showed Good Agreements with Referenced Results 8

9 DLL PERFORMANCE TEST SCOPS_SSIM SCOMS_SSIM DLL Test Results for Scenarios 9

10 DLL PERFORMANCE TEST SCOPS_SSIM SCOMS_SSIM Backtrack & Snap Test Results 10

11 COUPLING WITH SIMULATOR Setup SW Variables 3KM/MARS/MASTER/BOP Instructor SW-3KM Coupling SCOPS_SSIM SCOMS_SSIM SW algorithm modification Add operation mode Read/write backtrack & snap file SW-3KM coupling Generate DLL file OGD file generated with shared memory variable structure meet 10 cycle/sec exe. Performance Refer 2013 ANS Winter Meeting Coupling with 3KM : SW Integration 11

12 CONCLUSION A Real-time Model of Core Protection and Monitoring Algorithms for Simulator was Developed SCOPS_SSIM SCOMS_SSIM Software Algorithm, Design Bases and Requirements for Core Protection and Monitoring were Developed and Various DLL Performance Tests were Done Test Results Shows Good Agreements with Reference Integration Test will be Scheduled This Year Coupled with Platform It is judged that SCOPS_SSIM and SCOMS_SSIM Algorithms and Calculational Capabilities are Appropriate for Core Protection and Monitoring Program in Simulator 12