BEMUSE PHASE II: BEMUSE PHASE II: COMPARISON AND ANALYSIS - - PowerPoint PPT Presentation

▶
bemuse phase ii bemuse phase ii comparison and analysis
SMART_READER_LITE
LIVE PREVIEW

BEMUSE PHASE II: BEMUSE PHASE II: COMPARISON AND ANALYSIS - - PowerPoint PPT Presentation

Dec 01, 2023 580 likes •1.13k views

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.

slide-1
SLIDE 1

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

DIPARTIMENTO DI INGEGNERIA MECCANICA, NUCLEARE E DELLA PRODUZIONE - UNIVERSITA' DI PISA 56100 PISA - ITALY

Workshop on Evaluation of Uncertainties In Relation To Severe Accidents and Level 2 Probabilistic Safety Analysis November 7 – 9, 2005 – Aix-En-Provence, (FRANCE)

slide-2
SLIDE 2

FOREWORD FOREWORD

BEMUSE: OECD/NEA/CSNI PROJECT (02 BEMUSE: OECD/NEA/CSNI PROJECT (02-

  • 07)

07)

PHASE I (completed)

DESCRIPTION OF UNCERTAINTY METHODS

PHASE II (completed, report to be approved)

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

THIS PRESENTATION KEY RESULTS

slide-3
SLIDE 3

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
slide-4
SLIDE 4

PARTICIPANT ORGANIZATIONS TO PHASE II PARTICIPANT ORGANIZATIONS TO PHASE II

3/50

Code Resources 14 Participating Organizations; 7 TH System Codes

slide-5
SLIDE 5

NODALIZATION QUALIFICATION NODALIZATION QUALIFICATION

4/50

Part A Part B

slide-6
SLIDE 6

NODALIZATION QUALIFICATION NODALIZATION QUALIFICATION

5/50

Part A: Nodalization Development

slide-7
SLIDE 7

NODALIZATION QUALIFICATION NODALIZATION QUALIFICATION

6/50

Part B: Steady State Level

slide-8
SLIDE 8

NODALIZATION QUALIFICATION NODALIZATION QUALIFICATION

Results of the Nodalization Qualification QA and QB should be less than 1.

7/50

slide-9
SLIDE 9

NODALIZATION QUALIFICATION NODALIZATION QUALIFICATION

Results of the Nodalization Qualification

8/50

0.301 0.586 0.084 0.662 0.692 0.191 0.006 0.163 0.006 0.273 0.526 0.591 0.540 0.745 0.011 0.477 0.000 0.021 0.154 0.450 0.066 0.002 0.329 0.052 0.481 0.024 0.000

0.00 0.20 0.40 0.60 0.80 1.00 1.20 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 Global Acceptability Factors Qa Qb

1.443

slide-10
SLIDE 10

NODALIZATION QUALIFICATION NODALIZATION QUALIFICATION

Pressures – Length Curve

9/50

0.994 0.996 0.998 1.000 1.002 1.004 1.006 1.008 5 10 15 20 25 30

Loop Length (m) Normalized Pressure (-)

CEA [C25] (14.916 MPa) EDOGIDRO [T97] (14.963 MPa) GRS [A12] (14.940 MPa) 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) UPC [R5] (14.960 MPa) UPI [R5] (15.020 MPa) Experimental

HL IN CL IN PUMP OUT OUT SG NOZZLE SG OUT UT TOP SG IN HL OUT PUMP IN LOOP SEAL TAF BAF LP CL OUT HL IN

slide-11
SLIDE 11

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Resulting Time sequence of Events - 1

10/50

0.0 20.0 40.0 60.0 80.0 100.0 120.0 0.0 20.0 40.0 60.0 80.0 100.0 120.0

Time (s) Time After Experiment Initiation (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5] Experimental

Maximum cladding temperature reached Accumulator emptied LPIS injection terminated Core cladding fully quenched

slide-12
SLIDE 12

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Resulting Time sequence of Events - 2

11/50

0.0 5.0 10.0 15.0 20.0 25.0 0.0 5.0 10.0 15.0 20.0 25.0

Time (s) Time After Experiment Initiation (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5] Experimental

Partial top-down rewet ended Pressurizer emptied Partial top-down rewet initiated Accumulator A injection initiated Subcooled break flow ended in cold leg

slide-13
SLIDE 13

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Resulting Time sequence of Events - 3

12/50

0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4

Time (s) Time After Experiment Initiation (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5] Experimental

Reactor scrammed Subcooled blowdown ended DNB

slide-14
SLIDE 14

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Experimental Time Trends Comparisons – Qualitative Judgments

13/50

0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5] EXP: PE-PC-002

INTACT LOOP PRESSURE IN HOT LEG Pressure (MPa)

slide-15
SLIDE 15

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Experimental Time Trends Comparisons – Qualitative Judgments

14/50

4.50 5.00 5.50 6.00 6.50 7.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5] EXP: PE-SGS-001

SG PRESSURE - SECONDARY SIDE Pressure (MPa)

slide-16
SLIDE 16

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Experimental Time Trends Comparisons – Qualitative Judgments

15/50

0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50 5.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5] EXP: PT-P120-043

ACCUMULATOR "A" PRESSURE Pressure (MPa)

slide-17
SLIDE 17

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Experimental Time Trends Comparisons – Qualitative Judgements

16/50

0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5] EXP: PT-P139-05-1

PRESSURIZER PRESSURE Pressure (MPa)

slide-18
SLIDE 18

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Experimental Time Trends Comparisons – Qualitative Judgements

17/50

300.00 350.00 400.00 450.00 500.00 550.00 600.00 650.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5] EXP: TE-3LP-001

CORE INLET FLUID TEMPERATURE Temperature (K)

slide-19
SLIDE 19

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Experimental Time Trends Comparisons – Qualitative Judgements

18/50

300.00 350.00 400.00 450.00 500.00 550.00 600.00 650.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5] EXP: TE-5UP-003

CORE OUTLET FLUID TEMPERATURE Temperature (K)

slide-20
SLIDE 20

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Experimental Time Trends Comparisons – Qualitative Judgments

19/50

  • 200.00
  • 100.00

0.00 100.00 200.00 300.00 400.00 500.00 600.00 700.00 800.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5] EXP: FR-BL-001

BREAK FLOW RATE IN COLD LEG Flow Rate (Kg/s)

slide-21
SLIDE 21

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Experimental Time Trends Comparisons – Qualitative Judgments

20/50

  • 200.00
  • 100.00

0.00 100.00 200.00 300.00 400.00 500.00 600.00 700.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5] EXP: FR-BL-002

BREAK FLOW RATE IN HOT LEG Flow Rate (Kg/s)

slide-22
SLIDE 22

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Experimental Time Trends Comparisons – Qualitative Judgments

21/50

0.00 500.00 1000.00 1500.00 2000.00 2500.00 3000.00 3500.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5] EXP: Derived-ECCS

ECCS INTEGRAL FLOW RATE Mass (Kg)

slide-23
SLIDE 23

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Experimental Time Trends Comparisons – Qualitative Judgments

22/50

0.00 1000.00 2000.00 3000.00 4000.00 5000.00 6000.00 7000.00 8000.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5] EXP: Derived-MASS

PRIMARY SIDE TOTAL MASS Mass (Kg)

slide-24
SLIDE 24

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Core Geometry and Position for the Hot Rod Cladding Temperatures

ZONE 4 = HOT ROD (RODS N° = 1) ZONE 3 = HOT CHANNEL (RODS N° = 203) ZONE 2 = AVERAGE CHANNEL (RODS N° = 876) ZONE 1 = PERIPHERAL CHANNEL (RODS N° = 220) CONTROL RODS (RODS N° = 137)

ZONE 4: HOT ROD (FUEL ASSEMBLY N° 5) - HEIGHT: 2/3

A B C D E F G H I J K L M N O 1 2 3 4 5 6 PCTMin : 5H06-037 7 (0.94 m - 974 K) 8 9 PCTMAX = PCTRef : 5H06-024 10 (0.61 m - 1078 K) 11 12 13 14 15 TAF TOP 1.0 m 1.676 m 2/3 ZONE 0.4 m BOTTOM BAF

23/50

9 7 1 3 5 2 8 6 4

N J

slide-25
SLIDE 25

24/50

Maximum Linear Power Adopted

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

slide-26
SLIDE 26

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Experimental Time Trends Comparisons – Qualitative Judgments

25/50

300.00 400.00 500.00 600.00 700.00 800.00 900.00 1000.00 1100.00 1200.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5] PCTmax: TE-5F04-015 PCTmin: TE-5H05-002

HOT ROD TEMPERATURE (ZONE 4) - BOTTOM LEVEL Temperature (K)

slide-27
SLIDE 27

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Experimental Time Trends Comparisons – Qualitative Judgments

26/50

300.00 400.00 500.00 600.00 700.00 800.00 900.00 1000.00 1100.00 1200.00 1300.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5] PCTmax: TE-5H06-024 PCTmin: TE-5H06-037

HOT ROD TEMPERATURE (ZONE 4) - 2/3 LEVEL Temperature (K)

slide-28
SLIDE 28

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Experimental Time Trends Comparisons – Qualitative Judgments

27/50

300.00 400.00 500.00 600.00 700.00 800.00 900.00 1000.00 1100.00 1200.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5] PCTmax: TE-5H07-041 PCTmin: TE-5M07-062

HOT ROD TEMPERATURE (ZONE 4) - TOP LEVEL Temperature (K)

slide-29
SLIDE 29

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Experimental Time Trends Comparisons – Qualitative Judgments

28/50

300.00 400.00 500.00 600.00 700.00 800.00 900.00 1000.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5] PCTmax: TE-2G14-011 PCTmin: TE-4F07-015

AVERAGE ROD TEMPERATURE (ZONE 2) - BOTTOM LEVEL Temperature (K)

slide-30
SLIDE 30

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Experimental Time Trends Comparisons – Qualitative Judgments

29/50

300.00 400.00 500.00 600.00 700.00 800.00 900.00 1000.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5] PCTmax: TE-2H15-026 PCTmin: TE-4F09-026

AVERAGE ROD TEMPERATURE (ZONE 2) - 2/3 LEVEL Temperature (K)

slide-31
SLIDE 31

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Experimental Time Trends Comparisons – Qualitative Judgments

30/50

300.00 350.00 400.00 450.00 500.00 550.00 600.00 650.00 700.00 750.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5] PCTmax: TE-2H13-049 PCTmin: TE-4F09-041

AVERAGE ROD TEMPERATURE (ZONE 2) - TOP LEVEL Temperature (K)

slide-32
SLIDE 32

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

First PCT and Time of First PCT as function of Linear Power in PCT Location

31/50

900.0 950.0 1000.0 1050.0 1100.0 1150.0 1200.0 1250.0 1300.0 34.85 35.30 35.33 35.36 35.49 35.49 35.75 36.00 36.57 36.80 37.77 39.25 40.10 40.69

Linear Power in PCT location (KW/m) First PCT (K)

5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0

Time of First PCT (s)

First PCT Time of First PCT

EDO PSI [TR4] NRI-2 [A20] NRI-1 [R5] KINS [R5] KFKI [A20] KAERI [M23] JNES [TM55] IRSN [C25] GRS [A12] CEA [C25] UPC [R5] TAEK [R5] UPI [R5]

slide-33
SLIDE 33

QUALITATIVE ACCURACY EVALUATION QUALITATIVE ACCURACY EVALUATION

Relevant Thermal-Hydraulic Aspects

32/50

slide-34
SLIDE 34

QUANTITATIVE ACCURACY EVALUATION QUANTITATIVE ACCURACY EVALUATION

APPLICATION OF THE FFTBM

AAINTACT PRESSURE < 0.1 AATOT < 0.4

33/50

slide-35
SLIDE 35

AA Dispersion for Participants

QUANTITATIVE ACCURACY EVALUATION QUANTITATIVE ACCURACY EVALUATION

34/50

0.0 0.2 0.4 0.6 0.8 1.0 1.2 P-1 P-2 P-3 P-4 P-5 P-6 P-7 P-8 P-9 P-10 P-11 P-12 P-13 P-14 P-16 P-18 P-19 P-20

Parameter's IDs AA

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5]

slide-36
SLIDE 36

AA Dispersion for Parameter

QUANTITATIVE ACCURACY EVALUATION QUANTITATIVE ACCURACY EVALUATION

35/50

0.0 0.2 0.4 0.6 0.8 1.0 1.2 CEA [C25] IRSN [C25] NRI-2 [A20] GRS [A12] KFKI [A20] UPI [R5] NRI-1 [R5] UPC [R5] KINS [R5] TAEK [R5] PSI [TR4] EDOGIDRO [T97] JNES [TM55] KAERI [M23]

Participant's IDs AA

P-1 P-2 P-3 P-4 P-5 P-6 P-7 P-8 P-9 P-10 P-11 P-12 P-13 P-14 P-16 P-18 P-19 P-20

slide-37
SLIDE 37

USER’S EFFECT USER’S EFFECT

36/50

User effect is originated by: A) Nodalization development; B) Interpreting the supplied (or the available) information, usually incomplete; C) Accepting the steady state performance of the nodalization; D) Interpreting transient results, planning and performing sensitivity studies, modifying the nodalisation and finally achieving “a reference” or “an acceptable” solution.

  • Items A) and B) can be connected with the ‘global acceptability

factor for the nodalization development’, QA;

  • The ‘global acceptability factor for the nodalization qualification

at steady state level’, QB, deals with item C);

  • The activities at item D) can be summarized trough the single

average accuracy values (AA, and particularly AAP-1) and by the global average accuracy value (AATOT).

slide-38
SLIDE 38

USER’S EFFECT USER’S EFFECT

37/50

0.30 0.59 0.08 0.69 0.19 0.66 0.01 0.16 0.01 0.27 0.53 0.59 0.54 0.75 0.19 0.01 0.48 0.00 0.02 0.15 0.45 0.07 0.00 0.33 0.05 0.48 0.02 0.00 0.36 0.25 0.31 0.27 0.31 0.26 0.28 0.27 0.28 0.30 0.23 0.38 0.28

0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 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 Global Acceptability Factors & AATOT Qa Qb (AA)tot

1.44 Qa , Qb (AA)tot

slide-39
SLIDE 39

SENSITIVITY STUDY SENSITIVITY STUDY

38/50

slide-40
SLIDE 40

SENSITIVITY STUDY SENSITIVITY STUDY

39/50

slide-41
SLIDE 41

SENSITIVITY STUDY SENSITIVITY STUDY

Comparison of the Results (Time Trends)

40/50

0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5]

SENSITIVITY N°1: Break Area

Pressure (MPa)

UPPER PLENUM PRESSURE

0.0 20.0 40.0 60.0 80.0 100.0 120.0 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5]

SENSITIVITY N°1: Break Area

Mass Inventory (%)

PRIMARY SYSTEM MASS INVENTORY

300.0 400.0 500.0 600.0 700.0 800.0 900.0 1000.0 1100.0 1200.0 1300.0 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5]

SENSITIVITY N°1: Break Area

Temperature (K)

HOTTEST ROD SURFACE TEMPERATURE

slide-42
SLIDE 42

SENSITIVITY STUDY SENSITIVITY STUDY

Comparison of the Results (Time Trends)

41/50

0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] (NOT PERFORMED) KAERI [M23] KFKI [A20] (NOT PERFORMED) KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5]

SENSITIVITY N°3: Gap Thickness

Pressure (MPa)

UPPER PLENUM PRESSURE

0.0 20.0 40.0 60.0 80.0 100.0 120.0 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] (NOT PERFORMED) KAERI [M23] KFKI [A20] (NOT PERFORMED) KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5]

SENSITIVITY N°3: Gap Thickness

Mass Inventory (%)

PRIMARY SYSTEM MASS INVENTORY

300.0 500.0 700.0 900.0 1100.0 1300.0 1500.0 1700.0 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] (NOT PERFORMED) KAERI [M23] KFKI [A20] (NOT PERFORMED) KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5]

SENSITIVITY N°3: Gap Thickness

Temperature (K)

HOTTEST ROD SURFACE TEMPERATURE

slide-43
SLIDE 43

SENSITIVITY STUDY SENSITIVITY STUDY

Comparison of the Results (Time Trends)

42/50

0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] (NOT PERFORMED) KAERI [M23] KFKI [A20] (NOT PERFORMED) KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5]

SENSITIVITY N°5: Fuel Conductivity

Pressure (MPa)

UPPER PLENUM PRESSURE

0.0 20.0 40.0 60.0 80.0 100.0 120.0 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] (NOT PERFORMED) KAERI [M23] KFKI [A20] (NOT PERFORMED) KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5]

SENSITIVITY N°5: Fuel Conductivity

Mass Inventory (%)

PRIMARY SYSTEM MASS INVENTORY

300.0 500.0 700.0 900.0 1100.0 1300.0 1500.0 1700.0 1900.0 2100.0 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] (NOT PERFORMED) KAERI [M23] KFKI [A20] (NOT PERFORMED) KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5]

SENSITIVITY N°5: Fuel Conductivity

Temperature (K)

HOTTEST ROD SURFACE TEMPERATURE

slide-44
SLIDE 44

SENSITIVITY STUDY SENSITIVITY STUDY

Comparison of the Results (Time Trends)

43/50

0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5]

SENSITIVITY N°10: Maximum Linear Power

Pressure (MPa)

UPPER PLENUM PRESSURE

0.0 20.0 40.0 60.0 80.0 100.0 120.0 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5]

SENSITIVITY N°10: Maximum Linear Power

Mass Inventory (%)

PRIMARY SYSTEM MASS INVENTORY

300.0 500.0 700.0 900.0 1100.0 1300.0 1500.0 1700.0 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00

Time (s)

CEA [C25] EDOGIDRO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5]

SENSITIVITY N°10: Maximum Linear Power

Temperature (K)

HOTTEST ROD SURFACE TEMPERATURE

slide-45
SLIDE 45

SENSITIVITY STUDY SENSITIVITY STUDY

DPCT and DTREFLOOD: RESULTS of Sensitivities

44/50

slide-46
SLIDE 46

SENSITIVITY STUDY SENSITIVITY STUDY

DPCT Dispersion for Sensitivity Parameter

45/50

  • 300.0
  • 200.0
  • 100.0

0.0 100.0 200.0 300.0 400.0 500.0 600.0 700.0 800.0 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]

Participant's IDs DPCT (K)

Break Area Gap Conductivity Gap Thickness Presence of Crud Fuel Conductivity Core Pressure Drop CCFL Decay Power Time of Scram Max Linear Power Accumulator Pressure Accumulator Liquid Mass Pressurizer Level HPIS Failure LPIS injection Time

slide-47
SLIDE 47

SENSITIVITY STUDY SENSITIVITY STUDY

DPCT Dispersion for Participants

46/50

  • 300.0
  • 200.0
  • 100.0

0.0 100.0 200.0 300.0 400.0 500.0 600.0 700.0 800.0 Break Area Gap Conductivity Gap Thickness Presence of Crud Fuel Conductivity Core Pressure Drop CCFL Decay Power Time of Scram Max Linear Power Accumulator Pressure Accumulator Liquid Mass Pressurizer Level HPIS Failure LPIS injection Time

Sensitivities DPCT (K)

CEA [C25] EDO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5]

slide-48
SLIDE 48

SENSITIVITY STUDY SENSITIVITY STUDY

DPCT Gaussian Distribution Curves for Sensitivity Parameter

47/50

0.000 0.001 0.002 0.003 0.004 0.005 0.006 0.007 0.008 0.009 0.010

  • 400.0
  • 200.0

0.0 200.0 400.0 600.0 800.0

DPCT (K) Gaussian Distribution (-)

Break Area Gap Conductivity Gap Thickness Presence of Crud Fuel Conductivity Core Pressure Drop CCFL Decay Power Time of Scram Max Linear Power Accumulator Pressure Accumulator Liquid Mass Pressurizer Level HPIS Failure LPIS injection Time

slide-49
SLIDE 49

SENSITIVITY STUDY SENSITIVITY STUDY

DtREFLOOD Dispersion for Sensitivity Parameter

48/50

  • 20.0
  • 10.0

0.0 10.0 20.0 30.0 40.0 50.0 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]

Participant's IDs DtREFLOOD (s)

Break Area Gap Conductivity Gap Thickness Presence of Crud Fuel Conductivity Core Pressure Drop CCFL Decay Power Time of Scram Max Linear Power Accumulator Pressure Accumulator Liquid Mass Pressurizer Level HPIS Failure LPIS injection Time

slide-50
SLIDE 50

SENSITIVITY STUDY SENSITIVITY STUDY

DtREFLOOD Dispersion for Participant

49/50

  • 20.0
  • 10.0

0.0 10.0 20.0 30.0 40.0 50.0 Break Area Gap Conductivity Gap Thickness Presence of Crud Fuel Conductivity Core Pressure Drop CCFL Decay Power Time of Scram Max Linear Power Accumulator Pressure Accumulator Liquid Mass Pressurizer Level HPIS Failure LPIS injection Time

Sensitivities DtREFLOOD (s)

CEA [C25] EDO [T97] GRS [A12] IRSN [C25] JNES [TM55] KAERI [M23] KFKI [A20] KINS [R5] NRI-1 [R5] NRI-2 [A20] PSI [TR4] TAEK [R5] UPC [R5] UPI [R5]

slide-51
SLIDE 51

SENSITIVITY STUDY SENSITIVITY STUDY

DtREFLOOD Distribution Curves for Sensitivity Parameter

50/50

0.000 0.010 0.020 0.030 0.040 0.050 0.060 0.070 0.080 0.090

  • 50.0
  • 40.0
  • 30.0
  • 20.0
  • 10.0

0.0 10.0 20.0 30.0 40.0 50.0

DPCT (K) Gaussian Distribution (-)

Break Area Gap Conductivity Gap Thickness Presence of Crud Fuel Conductivity Core Pressure Drop CCFL Decay Power Time of Scram Max Linear Power Accumulator Pressure Accumulator Liquid Mass Pressurizer Level

slide-52
SLIDE 52

KEY RESULTS FROM BEMUSE PHASE III KEY RESULTS FROM BEMUSE PHASE III

50/50

slide-53
SLIDE 53

KEY RESULTS FROM BEMUSE PHASE III KEY RESULTS FROM BEMUSE PHASE III

50/50