Parametric study of the effect of burnable poison rods for PWR burnup credit

Parametric Study of the Effect of Burnable Poison Rods for PWR Burnup Credit......Page 1
AVAILABILITY OF REFERENCE MATERIALS IN NRC PUBLICATIONS......Page 2
Date Published: March 2002......Page 3
ABSTRACT......Page 5
CONTENTS......Page 7
LIST OF FIGURES......Page 9
LIST OF TABLES......Page 13
FOREWORD......Page 15
ACKNOWLEDGEMENTS......Page 17
1 INTRODUCTION......Page 19
2.2 BURNABLE POISON ROD ASSEMBLY OPERATIONAL PRACTICES......Page 21
3.4 CASK SPECIFICATIONS......Page 23
Table 2......Page 24
Figure 1......Page 25
Table 4......Page 26
Figure 2......Page 27
Table 7......Page 28
4.1 HELIOS CODE PACKAGE......Page 29
Figure 3......Page 30
4.2.2 SAS2H Modeling for BPRs......Page 31
Figure 4......Page 32
Table 8......Page 33
5.1 INTRODUCTION AND BACKGROUND......Page 35
5.2.1.1.1 Effect of initial fuel enrichment......Page 36
Figure 5......Page 37
Figure 6......Page 38
Figure 7......Page 39
Figure 8......Page 40
5.2.1.1.2 Effect of variations in the number of BPRs present......Page 41
Figure 9......Page 42
Figure 10......Page 43
Figure 11......Page 44
Figure 12......Page 45
Figure 13......Page 46
Figure 14......Page 47
Figure 15......Page 48
Figure 16......Page 49
5.2.1.2 Pyrex Burnable Absorber Assembly (BAA) BPRs......Page 50
Figure 17......Page 51
Figure 18......Page 52
Figure 19......Page 53
Figure 20......Page 54
Figure 21......Page 55
Figure 22......Page 56
5.2.2.1 Effect of Variations in the BPR Poison (B4C) Loading......Page 57
Figure 23......Page 58
Figure 24......Page 59
Figure 25......Page 60
Figure 26......Page 61
Figure 27......Page 62
Figure 28......Page 63
5.3 INFINITE PIN-CELL CALCULATIONS WITH SAS2H-CSAS1X......Page 64
Figure 29......Page 65
Figure 30......Page 66
Figure 31......Page 67
Figure 32......Page 68
Figure 33......Page 69
Figure 34......Page 70
5.3.1 Comparison of SAS2H and HELIOS Results......Page 71
Figure 35......Page 72
Figure 36......Page 73
Figure 37......Page 74
5.4.1 Effect of BPRs with Uniform Axial Burnup......Page 75
5.4.2 Effect of BPRs with Consideration of the Axial Burnup Distribution......Page 76
5.4.3 Consideration of Risk-Based Approaches......Page 77
Table 10......Page 78
Table 12......Page 79
Figure 38......Page 80
Table 14......Page 81
Figure 39......Page 82
Table 16......Page 83
Figure 40......Page 84
Table 18......Page 85
Table 19......Page 86
Figure 41......Page 87
6 DISCUSSION AND IMPLICATIONS......Page 89
7 RECOMMENDATIONS......Page 91
8 REFERENCES......Page 93
APPENDIX A SELECTED HELIOS INPUT FILES......Page 97
HELIOS input file for Westinghouse 17 × 17 OFA assembly without BPRs present......Page 99
HELIOS input file for Westinghouse 17 × 17 OFA assembly with 12 WABA BPRs present during the first 15 GWd/t of burnup......Page 102
HELIOS input file for Westinghouse 17 × 17 OFA assembly with 24 WABA BPRs present during the first 15 GWd/t of burnup......Page 106
HELIOS input file for Westinghouse 17 × 17 OFA assembly with 12 BAA BPRs present during the first 15 GWd/t of burnup......Page 110
HELIOS input file for Westinghouse 17 × 17 OFA assembly with 24 BAA BPRs present during the first 15 GWd/t of burnup......Page 114
HELIOS input file for B&W 15 × 15 assembly without BPRs present......Page 118
HELIOS input file for B&W 15 × 15 assembly with 16 BPRs (2 wt % B4C) present during the first 15 GWd/t of burnup......Page 121
APPENDIX B SELECTED SAS2H INPUT FILES......Page 125
SAS2H input file for Westinghouse 17 × 17 OFA assembly without BPRs present......Page 127
SAS2H input file for Westinghouse 17 × 17 OFA assembly with 12 WABA BPRs present during the first 15 GWd/t of burnup......Page 130
SAS2H input file for Westinghouse 17 × 17 OFA assembly with 24 WABA BPRs present during the first 15 GWd/t of burnup......Page 134
SAS2H input file for Westinghouse 17 × 17 OFA assembly with 12 BAA BPRs present during the first 15 GWd/t of burnup......Page 138
SAS2H input file for Westinghouse 17 × 17 OFA assembly with 24 BAA BPRs present during the first 15 GWd/t of burnup......Page 143
SAS2H input file for B&W 15 × 15 assembly without BPRs present......Page 147
SAS2H input file for B&W 15 × 15 assembly with 16 BPRs (2 wt % B4C) present during the first 15 GWd/t of burnup......Page 150
EXTERNAL DISTRIBUTION......Page 155
BIBLIOGRAPHIC DATA SHEET......Page 159