nureg/cr-6700 - Oak Ridge National Laboratory

CONTENTS
ABSTRACT....................................................................................................................................................... iii
LIST OF FIGURES ...........................................................................................................................................vii
LIST OF TABLES..............................................................................................................................................ix
ACKNOWLEDGMENTS ..................................................................................................................................xi
1. INTRODUCTION......................................................................................................................................1
1.1 Objectives ..........................................................................................................................................1
2. ANALYSIS APPROACH..........................................................................................................................3
2.1 Areas of Interest.................................................................................................................................3
2.2 Range of Study...................................................................................................................................3
2.3 Depletion-Analysis Models ...............................................................................................................5
2.4 Cask Models ......................................................................................................................................7
2.5 Shielding Analyses.............................................................................................................................7
2.6 Ranking Studies .................................................................................................................................8
3. CRITICALITY SAFETY...........................................................................................................................9
3.1 Criticality-Safety Rankings..............................................................................................................11
4. DECAY HEAT ........................................................................................................................................23
4.1 Decay-Heat Rankings ......................................................................................................................26
5. RADIATION SHIELDING .....................................................................................................................31
5.1 Neutron Sources...............................................................................................................................31
5.2 Radionuclide Rankings ....................................................................................................................41
6. SUMMARY.............................................................................................................................................53
7. CONCLUSIONS AND RECOMMENDATIONS...................................................................................57
8. REFERENCES.........................................................................................................................................59
APPENDIX A: COMPUTER CODE INPUT AND OUTPUT LISTINGS .....................................................61
Page
v