Site Profile for the Lawrence Berkeley National Laboratory
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ORAU TEAM Dose Reconstruction Project for NIOSH Oak Ridge Associated Universities I Dade Moeller I MJW Technical Services Page 1 of 109 DOE Review Release 05/19/2010 Document Title: Document Number: ORAUT-TKBS-0049 Revision: 02 Site Profile for the Lawrence Berkeley National Effective Date: 05/10/2010 Laboratory Type of Document: TBD Supersedes: Revision 01 Subject Expert(s): Stephen Spanos, John J. Fix, Elyse M. Thomas, Paul A. Szalinski, Baynard Turpin, James E. Turner, James East, Elizabeth A. Langille, and Bill R. Thomas Site Expert(s): N/A Approval: Signature on File Approval Date: 05/06/2010 Ralph W. Kenning, Document Owner Concurrence: Signature on File Concurrence Date: 05/06/2010 John M. Byrne, Objective 1 Manager Concurrence: Keith A. McCartney Signature on File for Concurrence Date: 05/06/2010 Edward F. Maher, Objective 3 Manager Concurrence: Signature on File Concurrence Date: 05/06/2010 Kate Kimpan, Project Director Approval: Signature on File Approval Date: 05/10/2010 James W. Neton, Associate Director for Science New Total Rewrite Revision Page Change FOR DOCUMENTS MARKED AS A TOTAL REWRITE, REVISION, OR PAGE CHANGE, REPLACE THE PRIOR REVISION AND DISCARD / DESTROY ALL COPIES OF THE PRIOR REVISION. Document No. ORAUT-TKBS-0049 Revision No. 02 Effective Date: 05/10/2010 Page 2 of 109 PUBLICATION RECORD EFFECTIVE REVISION DATE NUMBER DESCRIPTION 08/07/2006 00 New site profile for the Lawrence Berkeley National Laboratory. First approved issue. Training required: As determined by the Task Manager. Initiated by Paul A. Szalinski. 04/02/2007 01 Approved Revision 01 initiated to include Task 5 and PID review comments which were omitted from Rev 00. Constitutes a total rewrite of document. Incorporates internal formal review comments and additional NIOSH formal review comments. Attributions and Annotations added. Incorporates internal formal review comments regarding the Attributions and Annotation section only. This revision results in an increase in assigned dose and a PER is required. Training required: As determined by the Task Manager. Initiated by Paul A. Szalinski. 05/10/2010 02 Revision initiated to incorporate SEC-00160 into Section 1.2. Updated boilerplate language. Incorporates guidance on the assignment of recycled uranium contaminants for intakes based on uranium bioassay results. Incorporates guidance on the assignment of plutonium mixtures for intakes based on plutonium bioassay results. Incorporates additional tritium guidance on the assignment of internal dose from stable metal tritides, and organically bound tritium. Incorporated information from historical documents captured since the last revision about X-ray equipment and exams before 1975, the addition of the LAT chest projection to the X-ray exam protocol in the 1970s, and the addition of the oblique(s) chest projection(s) to the X- ray exam protocol in the 1980s. Added Table 3-1, “Frequency of occupational chest X-ray screening”. Added all the organs to Table 3-2, the table of organ doses for all time periods, and added the organ doses from the LAT and OBL chest projections. Organ doses after 1975 are based on X-ray equipment measurements at LBNL, and decreased slightly from the previous revision as a result of using site specific entrance air kerma in air measurements. Added Table 3-3, “Skin dose guidance for various chest projections and periods”, and Table 3-4, “Skin dose (rem) from various chest projections, 1942 to present”. Incorporates formal internal and NIOSH review comments. Constitutes a total rewrite of the document. Training required: As determined by the Objective Manager. Initiated by Ralph W. Kenning. Document No. ORAUT-TKBS-0049 Revision No. 02 Effective Date: 05/10/2010 Page 3 of 109 TABLE OF CONTENTS SECTION TITLE PAGE Acronyms and Abbreviations ............................................................................................................... 6 1.0 Introduction .............................................................................................................................. 8 1.1 Purpose ........................................................................................................................ 9 1.2 Special Exposure Cohort Petition Information for LBNL ................................................ 9 1.3 Scope ......................................................................................................................... 10 2.0 Site Description ...................................................................................................................... 10 3.0 Occupational Medical Dose .................................................................................................... 21 4.0 Occupational Environmental Dose ......................................................................................... 30 5.0 Occupational Internal Dose .................................................................................................... 34 5.1 Plutonium ................................................................................................................... 47 5.2 Uranium ...................................................................................................................... 47 5.3 Tritium ........................................................................................................................ 48 5.3.1 Metal Tritides .................................................................................................. 48 5.3.2 Organically Bound Tritium ............................................................................... 48 6.0 Occupational External Dose ................................................................................................... 49 6.1 Dose Reconstruction Parameters ............................................................................... 49 6.1.1 Historical Administrative Practices .................................................................. 49 6.1.2 LBNL Personnel Dosimetry Technology .......................................................... 51 6.1.2.1 Beta/Photon Radiation Personnel Dosimeters .................................. 51 6.1.2.2 Neutron Radiation Personnel Dosimeters ......................................... 52 6.1.3 Calibration and Dosimeter Response Characteristics...................................... 52 6.1.3.1 Beta-Photon Dosimeters ................................................................... 53 6.1.3.2 Neutron Dosimeters .......................................................................... 53 6.1.4 Workplace Radiation Fields............................................................................. 53 6.1.4.1 Beta/Photon Radiation ...................................................................... 53 6.1.4.2 Neutron Radiation ............................................................................. 54 6.2 Monitored LBNL Workers – Measured Dose ............................................................... 54 6.2.1 Photon Dose Adjustments ............................................................................... 54 6.2.2 Photon Organ Dose Conversion Factors ......................................................... 54 6.2.3 Neutron Dose Adjustments ............................................................................. 55 6.2.4 Neutron Weighting Factor ............................................................................... 55 6.3 Monitored LBNL Workers – Missed Dose ................................................................... 56 6.4 Unmonitored LBNL Workers ....................................................................................... 57 6.4.1 Ambient Neutron Dose .................................................................................... 57 6.4.2 Ambient Photon Dose ..................................................................................... 57 6.4.3 Neutron to Photon Dose Ratio ........................................................................ 57 6.4.3.1 NP Ratio Application ......................................................................... 58 6.4.3.2 Construction Workers ....................................................................... 59 6.5 Uncertainty ................................................................................................................. 59 6.6 Shallow Dose ............................................................................................................. 60 6.6.1 Assigned Shallow Dose .................................................................................. 60 6.6.2 Assigned Extremity Skin Dose ........................................................................ 61 Document No. ORAUT-TKBS-0049 Revision No. 02 Effective Date: 05/10/2010 Page 4 of 109 7.0 Attributions and Annotations .................................................................................................. 61 References ........................................................................................................................................ 68 Glossary ............................................................................................................................................ 80 ATTACHMENT A, HISTORICAL TIMELINE OF RADIATION EXPOSURE ASSOCIATED EVENTS AT LBNL ............................................................................................... 88 LIST OF TABLES TABLE TITLE PAGE 2-1 Area information and parameters ..........................................................................................