DIPARTIMENTO DI INGEGNERIA MECCANICA, NUCLEARE E DELLA PRODUZIONE - UNIVERSITA' DI PISA 56100 PISA - ITALY BEMUSE PHASE II: BEMUSE PHASE II: COMPARISON AND ANALYSIS COMPARISON AND ANALYSIS OF THE RESULTS OF THE RESULTS REV. 1 REV. 1 A. Petruzzi, F. D’Auria Workshop on Evaluation of Uncertainties In Relation To Severe Accidents and Level 2 Probabilistic Safety Analysis November 7 – 9, 2005 – Aix-En-Provence, (FRANCE)
FOREWORD FOREWORD BEMUSE: OECD/NEA/CSNI PROJECT (02- -07) 07) BEMUSE: OECD/NEA/CSNI PROJECT (02 PHASE I (completed) THIS PRESENTATION DESCRIPTION OF UNCERTAINTY METHODS PHASE II (completed, report to be approved) KEY RESULTS LOFT ISP 13 (test L2-5) REVISIT & SENSITIVITY STUDY PHASE III (activity completed, report to be issued) UNCERTAINTY METHOD APPLICATION TO TEST L2-5 PHASES IV AND V (started, to be endorsed by CSNI) UNCERTAINTY METHOD APPLICATION TO ZION W NPP LBLOCA
CONTENTS CONTENTS � NODALIZATION QUALIFICATION � Nodalization Tables ( Template N° 1, Pag. 1 ) � Pressures Vs Length Curve ( New Request to the Participants ) � QUALITATIVE ACCURACY EVALUATION � Resulting Time Sequence of Events ( Template N° 1, Pag. 1 ) � Experimental Time Trends Comparisons – Qualitative Judgments ( T. #1 ) � Relevant Thermalhydraulic Aspects (RTA) Tables ( Template N° 2, Pag. 1 ) � QUANTITATIVE ACCURACY EVALUATION � Application of the FFTBM � USER’S EFFECT � SENSITIVITY STUDY ( Template N° 3 ) 2/50 �
PARTICIPANT ORGANIZATIONS TO PHASE II PARTICIPANT ORGANIZATIONS TO PHASE II Code Resources 14 Participating Organizations; 7 TH System Codes 3/50
4/50 NODALIZATION QUALIFICATION NODALIZATION QUALIFICATION Part B Part A
5/50 NODALIZATION QUALIFICATION NODALIZATION QUALIFICATION Development Nodalization Part A:
6/50 NODALIZATION QUALIFICATION NODALIZATION QUALIFICATION Steady State Part B: Level
NODALIZATION QUALIFICATION NODALIZATION QUALIFICATION Results of the Nodalization Qualification � Q A and Q B should be less than 1. 7/50
NODALIZATION QUALIFICATION NODALIZATION QUALIFICATION Results of the Nodalization Qualification 1.20 1.443 Qa Qb 1.00 Global Acceptability Factors 0.80 0.745 0.692 0.662 0.591 0.586 0.60 0.540 0.526 0.481 0.477 0.450 0.40 0.329 0.301 0.273 0.163 0.191 0.20 0.154 0.084 0.066 0.052 0.024 0.021 0.006 0.000 0.011 0.000 0.006 0.002 0.00 CEA [C25] IRSN [C25] NRI-2 [A20] GRS [A12] KFKI [A20] UPI [R5] NRI-1 [R5] UPC [R5] KINS [R5] TAEK [R5] PSI [TR4] EDO [T97] JNES [TM55] KAERI [M23] Organization's Name 8/50
NODALIZATION QUALIFICATION NODALIZATION QUALIFICATION Pressures – Length Curve CEA [C25] (14.916 MPa) EDOGIDRO [T97] (14.963 MPa) GRS [A12] (14.940 MPa) 1.008 IRSN [C25] (14.974 MPa) JNES [TM55] (14.948 MPa) KAERI [M23] (14.940 MPa) KFKI [A20] (15.093 MPa) KINS [R5] (14.924 MPa) NRI-1 [R5] (14.967 MPa) NRI-2 [A20] (14.967 MPa) PSI [TR4] (14.951 MPa) TAEK [R5] (14.968 MPa) 1.006 UPC [R5] (14.960 MPa) UPI [R5] (15.020 MPa) Experimental PUMP OUT CL OUT 1.004 Normalized Pressure (-) 1.002 LP BAF HL OUT HL IN CL IN LOOP SEAL TAF SG OUT 1.000 UT TOP HL IN 0.998 SG IN 0.996 PUMP IN OUT SG NOZZLE 0.994 0 5 10 15 20 25 30 Loop Length (m) 9/50
QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION Resulting Time sequence of Events - 1 120.0 Maximum cladding temperature reached LPIS injection terminated 100.0 CEA [C25] Time After Experiment Initiation (s) EDOGIDRO [T97] GRS [A12] 80.0 IRSN [C25] JNES [TM55] KAERI [M23] 60.0 KFKI [A20] KINS [R5] NRI-1 [R5] Core cladding fully quenched 40.0 NRI-2 [A20] Accumulator emptied PSI [TR4] TAEK [R5] 20.0 UPC [R5] UPI [R5] Experimental 0.0 0.0 20.0 40.0 60.0 80.0 100.0 120.0 Time (s) 10/50
QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION Resulting Time sequence of Events - 2 Partial top-down rewet CEA [C25] Pressurizer emptied 25.0 EDOGIDRO [T97] initiated GRS [A12] IRSN [C25] JNES [TM55] 20.0 Time After Experiment Initiation (s) KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] 15.0 NRI-2 [A20] PSI [TR4] TAEK [R5] 10.0 UPC [R5] Partial top-down rewet ended Accumulator A injection initiated UPI [R5] Experimental 5.0 Subcooled break flow ended in cold leg 0.0 0.0 5.0 10.0 15.0 20.0 25.0 Time (s) 11/50
QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION Resulting Time sequence of Events - 3 1.4 Subcooled blowdown ended CEA [C25] EDOGIDRO [T97] 1.2 GRS [A12] IRSN [C25] Time After Experiment Initiation (s) 1.0 JNES [TM55] KAERI [M23] KFKI [A20] 0.8 KINS [R5] NRI-1 [R5] Reactor scrammed NRI-2 [A20] 0.6 PSI [TR4] TAEK [R5] UPC [R5] 0.4 UPI [R5] Experimental 0.2 DNB 0.0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 Time (s) 12/50
QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION Experimental Time Trends Comparisons – Qualitative Judgments INTACT LOOP PRESSURE IN HOT LEG CEA [C25] 16.00 EDOGIDRO [T97] GRS [A12] 14.00 IRSN [C25] JNES [TM55] 12.00 KAERI [M23] KFKI [A20] Pressure (MPa) 10.00 KINS [R5] NRI-1 [R5] NRI-2 [A20] 8.00 PSI [TR4] TAEK [R5] 6.00 UPC [R5] UPI [R5] 4.00 EXP: PE-PC-002 2.00 0.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00 Time (s) 13/50
QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION Experimental Time Trends Comparisons – Qualitative Judgments SG PRESSURE - SECONDARY SIDE CEA [C25] 7.00 EDOGIDRO [T97] GRS [A12] IRSN [C25] 6.50 JNES [TM55] KAERI [M23] KFKI [A20] Pressure (MPa) KINS [R5] 6.00 NRI-1 [R5] NRI-2 [A20] PSI [TR4] 5.50 TAEK [R5] UPC [R5] UPI [R5] EXP: PE-SGS-001 5.00 4.50 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00 Time (s) 14/50
QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION Experimental Time Trends Comparisons – Qualitative Judgments ACCUMULATOR "A" PRESSURE CEA [C25] 5.00 EDOGIDRO [T97] GRS [A12] 4.50 IRSN [C25] 4.00 JNES [TM55] KAERI [M23] 3.50 KFKI [A20] Pressure (MPa) KINS [R5] 3.00 NRI-1 [R5] NRI-2 [A20] 2.50 PSI [TR4] 2.00 TAEK [R5] UPC [R5] 1.50 UPI [R5] EXP: PT-P120-043 1.00 0.50 0.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00 Time (s) 15/50
QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION Experimental Time Trends Comparisons – Qualitative Judgements PRESSURIZER PRESSURE CEA [C25] 16.00 EDOGIDRO [T97] GRS [A12] 14.00 IRSN [C25] JNES [TM55] 12.00 KAERI [M23] KFKI [A20] Pressure (MPa) 10.00 KINS [R5] NRI-1 [R5] NRI-2 [A20] 8.00 PSI [TR4] TAEK [R5] 6.00 UPC [R5] UPI [R5] 4.00 EXP: PT-P139-05-1 2.00 0.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00 Time (s) 16/50
QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION Experimental Time Trends Comparisons – Qualitative Judgements CORE INLET FLUID TEMPERATURE CEA [C25] 650.00 EDOGIDRO [T97] GRS [A12] 600.00 IRSN [C25] JNES [TM55] KAERI [M23] 550.00 KFKI [A20] Temperature (K) KINS [R5] 500.00 NRI-1 [R5] NRI-2 [A20] PSI [TR4] 450.00 TAEK [R5] UPC [R5] 400.00 UPI [R5] EXP: TE-3LP-001 350.00 300.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00 Time (s) 17/50
QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION Experimental Time Trends Comparisons – Qualitative Judgements CORE OUTLET FLUID TEMPERATURE CEA [C25] 650.00 EDOGIDRO [T97] GRS [A12] 600.00 IRSN [C25] JNES [TM55] KAERI [M23] 550.00 KFKI [A20] Temperature (K) KINS [R5] 500.00 NRI-1 [R5] NRI-2 [A20] PSI [TR4] 450.00 TAEK [R5] UPC [R5] UPI [R5] 400.00 EXP: TE-5UP-003 350.00 300.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00 Time (s) 18/50
QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION Experimental Time Trends Comparisons – Qualitative Judgments BREAK FLOW RATE IN COLD LEG CEA [C25] 800.00 EDOGIDRO [T97] GRS [A12] 700.00 IRSN [C25] JNES [TM55] 600.00 KAERI [M23] KFKI [A20] 500.00 Flow Rate (Kg/s) KINS [R5] 400.00 NRI-1 [R5] NRI-2 [A20] 300.00 PSI [TR4] TAEK [R5] 200.00 UPC [R5] UPI [R5] 100.00 EXP: FR-BL-001 0.00 -100.00 -200.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00 Time (s) 19/50
QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION Experimental Time Trends Comparisons – Qualitative Judgments BREAK FLOW RATE IN HOT LEG CEA [C25] 700.00 EDOGIDRO [T97] GRS [A12] 600.00 IRSN [C25] JNES [TM55] 500.00 KAERI [M23] KFKI [A20] 400.00 Flow Rate (Kg/s) KINS [R5] NRI-1 [R5] 300.00 NRI-2 [A20] PSI [TR4] 200.00 TAEK [R5] UPC [R5] 100.00 UPI [R5] EXP: FR-BL-002 0.00 -100.00 -200.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00 Time (s) 20/50
QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION Experimental Time Trends Comparisons – Qualitative Judgments ECCS INTEGRAL FLOW RATE CEA [C25] 3500.00 EDOGIDRO [T97] GRS [A12] 3000.00 IRSN [C25] JNES [TM55] KAERI [M23] 2500.00 KFKI [A20] KINS [R5] Mass (Kg) 2000.00 NRI-1 [R5] NRI-2 [A20] PSI [TR4] 1500.00 TAEK [R5] UPC [R5] 1000.00 UPI [R5] EXP: Derived-ECCS 500.00 0.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00 Time (s) 21/50
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