Summary of Int’l ITL Program (1) KAERI T/H Safety Research

Summary of Int’l ITL Program (2) KAERI T/H Safety Research

IET Facilities and Code Development KAERI T/H Safety Research

KAERI T/H Safety Research ITL for PWR KAERI T/H Safety Research

KAERI T/H Safety Research ITL for B&W PWR KAERI T/H Safety Research

KAERI T/H Safety Research ITL for AP600 KAERI T/H Safety Research

KAERI T/H Safety Research LSTF Design Basis : Reference Plant : W 4-Loop PWR (3423 MWt) Scaling : FPFH, 1/48 Volume Core Power : Max. 10 MW (14% of Scaled full power) Methodology : Volume scaling Design Characteristics 2 Loops Combined into 1 Loop RPV Downcomer : Annulus (Gap size = 5.3 cm) Pump coast-down : Controlled Test Matrix SB-LOCA, SGTR, N/C Imitation of MIHAMA Accident KAERI T/H Safety Research

KAERI T/H Safety Research ROSA-AP600 Test Objectives Confirmatory Testing of AP600 Design Basis : Reference Plant : AP-600 (1940 MWt) Scaling : FPFH, 1/30 Volume Core Power : Max. 10 MW (16% of Scaled full power) Methodology : Volume scaling Test Matrix DBA with Single Failure Criterion : 1/2”, 1”, 2” Breaks DEG-DVIB Inadvertent ADS-1 Opening Multiple Failures : Multiple SGTR : 1.75 & 5 Tubes Break MSLB (200% Break) + SGTR SBO Complete Closure of ADS1-3 V/V’s Closure of 2 out of 4 ADS4 V/V’s Closure of 3 out of 4 ADS4 V/V’s Failure of 1 CMT Failure of Both CMT’s KAERI T/H Safety Research

KAERI T/H Safety Research BETHSY Design Basis : Reference Plant : Framatome 3-Loop PWR (3423 MWt) Scaling : FPFH, 1/100 Volume Core Power : Max. 3 MW (10% of Scaled full power) Methodology : Volume scaling KAERI T/H Safety Research

KAERI T/H Safety Research SPES-2 (a) Test Objectives Examine the AP600 Safety System Response : Simulate AP600 T/H Behavior Following Specified Scenarios Check the Operation of CMT’s Check the Effect of N2 Gas from Acc’s after Water Delivery Check the ADS Depressirization Capability for Gravity Injection Provide Information on Interactions between Passive SIS & Non-safety Active Systems Verify the Computer Codes for Licensing Safety Analyses Design Basis : Reference Plant : AP-600 (1940 MWt) Simulated Systems : RCS, 2ry System upto MSIV All Passive Safety Sys. : CMT’s, IRWST, PRHRS, ADS, Acc’s Non-safety Active Sys. : CVCS, NRHRS, SFW Scaling : FPFH, 1/395 Volume Core Power : Max. 5 MW (100% of Scaled full power) Methodology : Volume scaling KAERI T/H Safety Research

KAERI T/H Safety Research SPES-2 (b) Design Characteristics HL & CL Dia. : Froude No. Preservation Downcomer : Annular Section + Tubular Section Two Sections Have the Same Frictional DP per Length Total Volume is Scaled by the Volume Scaling Factor 2 RCP’s : 2 CL’s are Connected to a Single RCP Centrifugal, Single-Stage, Horizontal Shaft Horizontal Suction Line, Vertical Downward Discharge Line Pzr : Volume Scaled, and Bottom Elevation and Level Swelling Preserved Pzr Surge Line : L/D Preservation for Horizontal Section and Same Inclination Angle for Inclined Section Preservation of Frictional Press. Drop due to its Important Role during ADS Actuation Steam Generator 2 Identical Geometry Inconel-600 Tubes (13 ea) Assembled in Square Array 2ry Side Volume : Same Scaling Factor Applied Preserve All Vertical Elevations upto Steam Separator Top (Excluding the Steam Dome Section) KAERI T/H Safety Research

KAERI T/H Safety Research SPES-2 (c ) Passive Safety Systems : CMT’s : Metal Mass Scaled to the Prototype Double-Walled (Pressurized with 70 Bar Air in Annulus) Vessel for Preserving Steam Condensation at Wall Accumulators : 2 EA, Volume-scaled 1 PRHR with Full-Heigth H/X (Frictional DP Maintained and H/T Area Scaled) IRWST : Water Volume Scaled & Elevation Maintained ADS : Each Stage is Simulated with 1 Ball V/V with an Orifice in Series for Scaling Flow Area 3 Stages Share a Common Discharge Line Connected to a Condenser & a Collection Tank (Load Cells Installed) Others Non-passive Sys. (CVCS, NRHRS, SFW) : Frictional Pressure Drop Maintained Breaks : Simulated by a Spoolpiece with a Break Orifice & QOV Catch Tanks : Flow from Break, ADS, 2ry Relief V/V is Discharged to Different Catch Tanks with Load Cells Test Matrix SB-LOCA’s (9 Tests) : 1,2” CLB’s, 2” DVIB, DEG-DVIB, 2” CMT BLB Single SGTR (3 tests) : with Both Active and Passive Non-safety Sys. MSLB (1 Tests) KAERI T/H Safety Research

KAERI T/H Safety Research APEX Test Objectives Examine the AP600 Safety System Response : Simulate AP600 T/H Behavior Following Specified Scenarios Especially Investigate the Gravity Draining in Coupled Systems and Long-term Recirculation Cooling Validate the Computer Codes for Design Certification Analyses Confirmatory Test : by NRC Design Basis : Reference Plant : AP-600 (1940 MWt) Scaling : RPRH (1/4 Height, 2.8 Mpa), 1/192 Volume Core Power : Max. 0.6 MW ( % of Scaled full power) Methodology : Two-tiered scaling KAERI T/H Safety Research

Characteristics of Component Design KAERI T/H Safety Research

Experimental Focus for PWR-ITL KAERI T/H Safety Research