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ORAU Team Document Number: ORAUT-TKBS-0017-2

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ORAU Team Document Number: ORAUT-TKBS-0017-2 ORAU Team Document Number: ORAUT-TKBS-0017-2 NIOSH Dose Reconstruction Project Effective Date: 05/20/2004 Revision No.: 00 Technical Basis Document for the Fernald Environmental Controlled Copy No.: ______ Management Project (FEMP) – Site Description Page 1 of 83 Subject Expert: Samuel L.T. Chu Supersedes: Document Owner Approval: Signature on File Date: 05/13/2004 Terry A. Kuykendall, TBD Team Leader None Approval: Signature on File Date: 05/19/2004 Judson L. Kenoyer, Task 3 Manager Concurrence: Signature on File Date: 05/19/2004 Richard E. Toohey, Project Director Approval: Signature on File Date: 05/20/2004 James W. Neton, OCAS Health Science Administrator TABLE OF CONTENTS Section Page RECORD OF ISSUE/REVISIONS ....................................................................................................... 5 ACRONYMS AND ABBREVIATIONS .................................................................................................. 6 2.0 SITE DESCRIPTION .................................................................................................................. 7 2.1 Introduction ................................................................................................................................. 7 2.1.1 Site Background and History ........................................................................................... 8 2.1.2 Site Location and Facilities .............................................................................................. 8 2.1.3 Site Operations ................................................................................................................ 8 2.1.4 Presentation for Dose Reconstruction Purposes ........................................................... 10 2.2 Production Facilities Activities and Processes ........................................................................... 10 2.2.1 Pilot Plant – UF6 to UF4 Reduction Plant ....................................................................... 10 2.2.1.1 Processes and Activities ................................................................................. 11 2.2.1.2 Radiation Sources ........................................................................................... 12 2.2.2 Plant 1 – Sampling Plant ............................................................................................... 14 2.2.2.1 Processes and Activities ................................................................................. 15 2.2.2.2 Radiation Sources ........................................................................................... 15 2.2.3 Plant 2/3 – Refinery ....................................................................................................... 18 2.2.3.1 Processes and Activities ................................................................................. 19 2.2.3.2 Radiation Sources ........................................................................................... 20 2.2.4 Plant 4 – Green Salt Plant ............................................................................................. 22 Effective Date: 05/20/2004 Revision No. 00 Document No. ORAUT-TKBS-0017-2 Page 2 of 83 2.2.4.1 Processes and Activities ................................................................................. 23 2.2.4.2 Radiation Sources ........................................................................................... 24 2.2.5 Plant 5 – Metals Production Plant .................................................................................. 27 2.2.5.1 Processes and Activities ................................................................................. 28 2.2.5.2 Radiation Sources ........................................................................................... 29 2.2.6 Plant 6 – Metals Fabrication Plant ................................................................................. 33 2.2.6.1 Processes and Activities ................................................................................. 34 2.2.6.2 Radiation Sources ........................................................................................... 34 2.2.7 Plant 7 – Hexafluoride Reduction Plant ......................................................................... 36 2.2.7.1 Processes and Activities ................................................................................. 36 2.2.7.2 Radiation Sources ........................................................................................... 37 2.2.8 Plant 8 – Scrap Recovery Plant ..................................................................................... 38 2.2.8.1 Processes and Activities ................................................................................. 39 2.2.8.2 Radiation Sources ........................................................................................... 39 2.2.9 Plant 9 – Special Products Plant ................................................................................... 43 2.2.9.1 Processes and Activities ................................................................................. 44 2.2.9.2 Radiation Sources ........................................................................................... 45 2.3 Waste Management Facilities Activities and Processes ............................................................ 48 2.3.1 Production Wastes ........................................................................................................ 49 2.3.2 Production Area Waste Treatment and Storage Facilities .............................................. 50 2.3.2.1 Thorium Buildings and Overpacking Operations ............................................. 50 2.3.2.2 Ferrous Metal Scrap Pile ................................................................................. 51 2.3.2.3 Pilot Plant Tank Farm ...................................................................................... 52 2.3.2.4 Pilot Plant Warehouse ..................................................................................... 52 2.3.2.5 KC-2 Warehouse ............................................................................................ 52 2.3.2.6 Refinery Storage Pad ...................................................................................... 53 2.3.3 Waste Facilities Outside Production Area ...................................................................... 53 2.3.3.1 Storage Silos .................................................................................................. 53 2.3.3.2 Low-Level Radioactive Waste Pit Area ........................................................... 56 2.4 FEMP REMEDIATION AND ENVIRONMENTAL RESTORATION ACTIVITIES SINCE 1989 ... 68 2.5 FEMP Radioactive Materials and Characteristics ...................................................................... 70 2.5.1 Uranium and Uranium Compounds ............................................................................... 71 2.5.2 Recycle Uranium ........................................................................................................... 72 2.5.3 Thorium and Thorium Compounds ................................................................................ 73 2.5.4 Radon and Thoron ........................................................................................................ 74 2.5.5 Specific Activities and Conversion Factors .................................................................... 75 REFERENCES .................................................................................................................................. 76 GLOSSARY ....................................................................................................................................... 78 Effective Date: 05/20/2004 Revision No. 00 Document No. ORAUT-TKBS-0017-2 Page 3 of 83 APPENDIX 2A Default Model of FEMP Production Rate History for Dose Reconstruction Purposes. ………………………………………….…………………………………………………………….82 APPENDIX 2B FEMP uranium emissions summary by plant (kg)………… …………………………….83 APPENDIX 2C Fugitive uranium and thorium emissions from wind erosion of Waste Pits 1, 2 and 3……………………………………….……………………………………….…………………………………83 APPENDIX 2D Fugitive uranium and thorium emissions from wind erosion of Waste Pits 1, 2 and 3…………………………………….……………………………………….……………………………………85 LIST OF TABLES Table Page 2-1a Pilot Plant air dust concentration by operation or location……………………………..…….…..12 2-1b Projected annual uranium intake estimates for Pilot Plant workers……………………….........13 2-1c Projected annual thorium intake estimates for Pilot Plant workers………………………….…..14 2-2a Plant 1 1955 airborne radioactivity concentration by worker groups……………………………16 2-2b Projected annual uranium intake estimates by Plant 1 worker groups…………………………17 2-3a Plant 1 1955 airborne alpha concentration by operation or location……………………………17 2-3b Projected annual uranium intake estimates for Plant 1 workers……………………………….. 19 2-4 Plant 2/3 gamma fluxes ……………………………………………………………………………..21 2-5a Plant 2/3 airborne radioactivity concentrations in late 1955 by worker groups………………...21 2-5b Projected annual uranium intake estimates by Plant 2/3 worker groups……………………….21 2-6a Plant 2/3 airborne radioactivity concentration by operation or location in late 1955…………..22 2-6b Projected annual uranium intake estimates by Plant 2/3 workers………………………………23 2-7a Plant 4 airborne radiactivity concentrations by operation or location…………………………...24 2-7b Projected annual uranium intake estimates by Plant 4 workers…………………………………28
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