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Transcript of BUILDING 235-F GOLDSIM FATE AND TRANSPORT MODEL G. A. 2020. 1. 13.¢  BUILDING 235-F...

  • SRNL-STI-2012-00504, REVISION 0

    Key Words:

    Deactivation and

    Decommissioning

    Retention:

    Permanent

    BUILDING 235-F GOLDSIM FATE AND TRANSPORT MODEL

    G. A. Taylor

    M. A. Phifer

    SEPTEMBER 14, 2012

    Savannah River National Laboratory

    Savannah River Nuclear Solutions

    Aiken, SC 29808

    Prepared for the U.S. Department of Energy Under

    Contract Number DE-AC09-08SR22470

  • SRNL-STI-2012-00504, REVISION DRAFT

    DISCLAIMER

    This work was prepared under an agreement with and funded by the U.S. Government.

    Neither the U. S. Government or its employees, nor any of its contractors,

    subcontractors or their employees, makes any express or implied:

    1. warranty or assumes any legal liability for the accuracy, completeness, or for the use

    or results of such use of any information, product, or process disclosed; or

    2. representation that such use or results of such use would not infringe privately owned

    rights; or

    3. endorsement or recommendation of any specifically identified commercial product,

    process, or service.

    Any views and opinions of authors expressed in this work do not necessarily state or

    reflect those of the United States Government, or its contractors, or subcontractors.

    Printed in the United States of America

    Prepared for

    U.S. Department of Energy

  • SRNL-STI-2012-00504, REVISION 0

    Key Words:

    Deactivation and

    Decommissioning

    Retention:

    Permanent

    BUILDING 235-F GOLDSIM FATE AND TRANSPORT MODEL

    G. A. Taylor

    M. A. Phifer

    SEPTEMBER 14, 2012

    Savannah River National Laboratory

    Savannah River Nuclear Solutions

    Savannah River Site

    Aiken, SC 29808

    Prepared for the U.S. Department of Energy Under

    Contract Number DE-AC09-08SR22470

  • SRNL-STI-2012-00504, REVISION 0

    Page iii

    REVIEWS AND APPROVALS

    ___________________________________________________________________________

    G. A. Taylor, Radiological Performance Assessment Date

    ___________________________________________________________________________

    M. A. Phifer, Radiological Performance Assessment Date

    ___________________________________________________________________________

    F. G. Smith, III, Peer Reviewer, Computational Engineering & Sciences Date

    ___________________________________________________________________________

    D. A. Crowley, Manager, Radiological Performance Assessment Date

    ___________________________________________________________________________

    R. S. Aylward, Manager, Environmental Restoration Technology Date

    ___________________________________________________________________________

    W. E. Austin, Jr., Area Completion Engineering Date

    ___________________________________________________________________________

    T. F. Gaughan, Manager, Area Completion Engineering Date

  • SRNL-STI-2012-00504, REVISION 0

    Page iv

    TABLE OF CONTENTS

    LIST OF FIGURES ............................................................................................................... vi LIST OF TABLES ................................................................................................................. ix

    LIST OF ACRONYMS ......................................................................................................... xi 1.0 EXECUTIVE SUMMARY .............................................................................................. 1 2.0 INTRODUCTION............................................................................................................. 5 3.0 CONCEPTUAL MODEL AND INPUT DATA ............................................................. 7

    3.1 Conceptual Model .......................................................................................................... 7

    3.2 Inventory ........................................................................................................................ 8 Building 235-F Radionuclide Inventory ................................................................ 8 3.2.1 Building 235-F Lead Inventory ............................................................................ 15 3.2.2

    Building 235-F PCBs Inventory ........................................................................... 15 3.2.3 Building 294-2F Sand Filter Radionuclide Inventory ........................................ 17 3.2.4

    3.3 Building 235-F Standards ........................................................................................... 19

    3.4 Radionuclide Data ....................................................................................................... 22 3.5 Infiltration and Building 235-F Condition Over Time............................................. 28

    Infiltration .............................................................................................................. 28 3.5.1

    Likely Condition of Building 235-F over Time ................................................... 32 3.5.2 Infiltration versus Building 235-F Condition ..................................................... 36 3.5.3

    3.6 Building Geometry ...................................................................................................... 39 3.7 Vadose Zone ................................................................................................................. 41 3.8 Aquifer .......................................................................................................................... 45

    3.9 Distribution Coefficients and Material Physical Properties .................................... 49 Distribution Coefficients ....................................................................................... 49 3.9.1 Material Physical Properties ................................................................................ 56 3.9.2 Lead Sheet Corrosion Source Release ................................................................. 60 3.9.3

    3.10 Upper Three Runs ..................................................................................................... 60 4.0 235-F GoldSim Fate and Transport Model .................................................................. 62

    4.1 Model Design ................................................................................................................ 63 4.2 Model Overview ........................................................................................................... 65 4.3 Model Labels ................................................................................................................ 66 4.4 Container Descriptions................................................................................................ 67

    Material Container ................................................................................................. 68 4.4.1

    References Container ............................................................................................ 74 4.4.2 ConceptualModels Container ................................................................................ 74 4.4.3 Miscellaneous Container ....................................................................................... 74 4.4.4 Inventory Container .............................................................................................. 74 4.4.5 Events Container ................................................................................................... 75 4.4.6 Sources Container ................................................................................................. 75 4.4.7 Outputs Container ................................................................................................. 99 4.4.8

    SensitivityAnalysis Container .............................................................................. 100 4.4.9 DashBoards Container ...................................................................................... 101 4.4.10 Modeling Sensitivities ....................................................................................... 102 4.4.11

    5.0 Results ............................................................................................................................ 107

  • SRNL-STI-2012-00504, REVISION 0

    Page v

    5.1 Results Summary ....................................................................................................... 107

    5.2 Brief Statistics discussion .......................................................................................... 112 5.3 Generic scenario ........................................................................................................ 116

    5.4 No action scenario ...................................................................................................... 116 Ra-226/Ra-228 MCL ........................................................................................... 116 5.4.1 Alpha MCL .......................................................................................................... 119 5.4.2 Beta-Gamma MCL .............................................................................................. 121 5.4.3 U-234 MCL .....................................