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Shaheen Azim Dewji Radiological Scientist, Center for Radiation Protection Knowledge Environmental Sciences Division, Oak Ridge National Laboratory 1 Bethel Valley Road, PO Box 2008 MS 6038 Oak Ridge, TN 37831-6038 E-Mail: [email protected] Tel: (865) 576-9348
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Education Doctor of Philosophy (2014) - Nuclear and Radiological Engineering Minor: International Affairs, Georgia Institute of Technology, Atlanta, GA, USA/ Metz, France Master of Science (2009) - Nuclear and Radiological Engineering, Georgia Institute of Technology, Atlanta, GA, USA Education Abroad Program (Aug.-Dec. 2005), University of California – Berkeley, Berkeley, CA, USA Bachelor of Science – Physics (2006), University of British Columbia, Vancouver, BC, Canada
Continuing Education Certificate of Nuclear Knowledge Management (2014), National Research Nuclear University - Moscow Engineering Physics Institute – MEPhi (International Atomic Energy Agency School of Nuclear Knowledge Management), Trieste, Italy
Research and Work Experience Radiological Engineer, Oak Ridge National Laboratory, Oak Ridge, TN, USA (Feb. 2015-Present) Environmental Sciences Division, Human Health Risk and Environmental Analysis Group, Center for Radiation Protection Knowledge • Computation of age- and sex-specific dose coefficients for exposure and uptake of fission products during a
radiological/nuclear accident or incident for the Centers for Disease Control and Prevention. • Preliminary reconstruction of doses for occupational/legacy Pu workers as part of dosimetric and
epidemiological “Million Person [Worker]” study with the NCRP. • Calculation of Specific Absorbed Fraction (SAFs) using MCNP adult/pre-adult voxel phantoms for calculation
of radionuclide dose coefficients supporting Environmental Protection Agency - Office of Air and Radiation (Federal Guidance Reports 16) and United States Nuclear Regulatory Commission rulemaking (10CFR 20/10CFR50), as well as development of SAF international standard values for the International Commission on Radiological Protection (Committee 2).
• Conducting validation and quality assurance calculations using MCNP for adults and pre-adult voxel and stylized phantoms in contaminated air submersion environment for supporting Environmental Protection Agency (Federal Guidance Report 15).
• Calculation of dose coefficients and DACs for noble gases for US-NRC 10CFR 20 Appendix B - Annual Limits on Intake (ALIs) and Derived Air Concentrations (DACs) of Radionuclides for Occupational Exposure;; Effluent Concentrations;; Concentrations for Release to Sewerage using ICRP adult voxel phantoms in various room sizes for United States Nuclear Regulatory Commission and international standard values for the International Commission on Radiological Protection.
• Evaluating patient release criteria for doses to members of the public from patients treated with 131I for hyperthyroidism and differentiated thyroid cancer through MCNP phantom simulation (PIMAL) and biokinetic modeling for the United States Nuclear Regulatory Commission (Regulatory Guide NUREG 8.39 Release of Patients Administered Radioactive Materials).
• Consultancy with International Atomic Energy Agency on Nuclear Accidents Repository Portal for multi-lateral nuclear knowledge management effort.
• Project management, development, testing, implementation and training development of stylized phantom with articulated/moveable limbs, Phantom with Moving Arms and Legs (PIMAL) software for United States Nuclear Regulatory Commission.
Shaheen Azim Dewji
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Nondestructive Assay Systems Engineer, Oak Ridge National Laboratory, Oak Ridge, TN, USA (Jan. 2013-Feb. 2015) Nuclear Security and Isotope Technology Division, Safeguards & Security Technology Group • Validating gamma-ray spectroscopic detection techniques (NaI, HPGe, LaBr3) with MCNP simulation models
to determine instrumentation sensitivity and uncertainty for safeguards monitoring at natural uranium conversion facilities;; evaluating feasibility of IAEA detection timeliness and significant quantity criteria (National Nuclear Security Administration, NA-24).
• Assessing sustainability of human capital pipeline in domestic and international safeguards expertise and resources required by the IAEA through program analysis and knowledge capture efforts (National Nuclear Security Administration, NA-24).
• Measurement and algorithm development of U/Pu holdup using Comprehensive Geometry Model, NaI(Tl) detectors, and surrogate detector characterization sources (i.e. 133Ba).
• Assessing plastic scintillator detector responses to changes in environmental conditions to identify degradation or hysteresis effects (National Nuclear Security Administration’s Office of Nuclear Smuggling Detection and Deterrence - Second Line of Defense Program).
• Preparation of comprehensive scoping report elaborating “Grand Challenges in Uncertainty Quantification” in safeguards NDA measurement and simulation (National Nuclear Security Administration, Defense Nuclear Nonproliferation, NA-22).
• Evaluating hybrid k-edge densitometer (HKED) as potential safeguards monitoring technology for pyroprocessing (National Nuclear Security Administration, NA-22).
Next Generation Safeguards Initiative Pre-Doctoral Research Fellow, Oak Ridge National Laboratory/Oak Ridge Associated Universities, Oak Ridge, TN, USA (Sept. 2010-Dec. 2012) Global Nuclear Security Technology Division, Safeguards & Security Technology Group • Assessing detector sensitivity and uncertainty to varying concentrations and geometries of uranyl nitrate using
gamma-ray detectors (NaI, HPGe, LaBr3) using MCNP and GADRAS to evaluate safeguards monitoring of uranium compounds.
• Comparing neutron and gamma-ray source signatures in uranyl nitrate during solvent extraction phase of conversion using SCALE and MCNP simulations.
• Synthesizing a Safeguards-by-Design approach for NDA hybrid k-edge (HKED) densitometer system in MOX fabrication facility.
Next Generation Safeguards Initiative Pre-Doctoral Research Fellow, Oak Ridge National Laboratory/Oak Ridge Associated Universities, Oak Ridge, TN, USA (Jan.-Aug. 2010) Nuclear Science and Technology Division, Nuclear Security Modeling Group • Conducting parameter sensitivity analysis for initial enrichment, burn-up history, and decay time variables
using ORIGEN-ARP for mathematical inverse simulation (INDEPTH) of spent fuel characteristics.
Graduate Research Assistant, Georgia Institute of Technology - Nuclear and Radiological Engineering Program, Atlanta, GA, USA/ Metz, France (Aug. 2006-Dec. 2009) • Assessing 1x1, 2x2, 3x3-inch NaI(Tl) detector responses to inhaled contamination during an RDD (dirty-bomb)
event for Centers for Disease Control & Prevention. • Evaluating NASA space shielding materials at Fermi National Laboratory and the University of Maryland’s
TRIGA research reactor via depth dose measurements. • Characterizing the thermal column of the TRIGA reactor using foil activation and Bonner sphere
measurements (LiI).
Threat Detection Defence Research Assistant – Military Engineering Section, Defence Research & Development Canada – Suffield - Suffield, AB, Canada (May-Aug. 2007) • Collaborating in development of a fast-timing anti-tank landmine detection system using fast neutron activation
analysis. • Synchronizing a D-T neutron generator with alpha (ZnO) and gamma (NaI, LaBr3) spectroscopy systems for
time-of-flight explosives detection. • Creating gamma spectral analysis program using CERN’s C++-based code, ROOT.
Shaheen Azim Dewji
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Radiation Protection/Health Physics Assistant (IAESTE Canada Program), Siempelkamp Nukleartechnik GmbH, Krefeld, Germany (June-Aug. 2005) • Investigating radiation exposure to workers handling NORM materials from oil/gas industries. • Acquiring experimental measurement dosimetry data using TLD films and personal dosimeters in a melting
plant recycling NORM-contaminated metals.
Nuclear Applications Defence Research Assistant – Military Engineering Section, Defence Research & Development Canada – Suffield, Suffield, AB, Canada (May-Aug. 2004) • Gamma-ray spectral analysis of simulated dirty-bomb materials in soil medium using both NaI(Tl) and HPGe
detectors for the Counter Terrorism Technology Centre.
Supervisor – Infrastructure Continuity Unit, Public Works & Government Services Canada, Ottawa, ON, Canada (Sept. 2002-Aug. 2003) • Project management of the creation of infrastructure contingency plans for government-wide risk management
and emergency response. • Orientation training and supervisory management of 20 co-op students. • Implementing quality standards as a certified ISO 9001:2000 auditor.
Professional Honors and Achievements Oak Ridge National Laboratory – Environmental Sciences Division – Science Serving Society (May 2016) “Awarded to person/team who enhance(s) the recognition, appreciation and support for projects, initiatives, and staff in ESD that have demonstrable impacts on policy development, environmental management, or decision-making within public or private organizations and institutions. Such work evidences tangible returns on R&D investment with respect to improving social, economic, and ecological well-being.”
Professional Society Affiliations American Nuclear Society (2005-Present) • Division Governance (Elected)
o Radiation Protection, and Shielding Division (RPSD): 2018-2019 Chair, 2017-2018 Vice Chair, 2013-2017 Treasurer, 2012-2013 Secretary, 2009-2012 Executive Committee Member
o Nuclear Nonproliferation Policy Division (NNPD): 2017-2018 Chair, 2016-2017 Vice Chair, 2015-2016 Secretary, 2014-2015 Treasurer, 2011-2014 Executive Committee Member, Special Committee: 2009-2011 National Committee Member
Health Physics Society (2006-Present) • President’s Special Task Force on Research Needs (2017-2018) - Appointed • Homeland Security Section - Board of Directors (2017-2020) • Workshop Program Organizer - Radiation Protection Research Needs Workshop (2017).
National and International Committees • National Council on Radiation Protection and Measurements (NCRP) - CC2
Meeting the Needs of the Nation for Radiation Protection 2016-Present
• ISO/TC 85/SC2 - Population Monitoring Following a Radiological Accident Dec. 2015-Present
Teaching and Training Experience • Health Physics Society 50th Mid-Year Meeting – Continuing Education Lectures –
Computing and Harnessing Dose Coefficients;; Radiological Toolbox 3.0.0 Training. Jan. 2017
• United States Nuclear Regulatory Commission Annual RAMP Users Workshop –
PIMAL Training Oct. 2015-2017
• Nondestructive Assay Fundamentals and Holdup Measurement Training Dec. 2014 • Fundamentals of Nondestructive Assay Safeguards Technology
Jan. 2013-Feb. 2015
Shaheen Azim Dewji
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Technical Skills and Languages Programming and Software Applications • C, C++, Java, Swing, Perl, SCHEME • Mathematica, ROOT, MATLAB, Gnuplot • UNIX/Linux, MS-Windows, Office, LaTeX • DCAL, Radiological Toolbox, PIMAL, CAP-88 Foreign Languages • Intermediate French & Beginner Russian
Nuclear Codes and Applications • MCNP6/MCNPX, SCALE/ORIGEN, GADRAS • GEANT4 (beginner) • Canberra Genie, Ortec MAESTRO, Cambio • U/Pu, MGAU, FRAM, HM-4 • Canberra ISOCS, Holdup HMS-4
Selected Publications • K.G. Veinot, S.A. Dewji, M.M. Hiller, K.F. Eckerman, C.E. Easterly, N.E. Hertel. Organ and
Effective Dose Coefficients for Room Immersions in Occupational Settings. Radiation and Environmental Biophysics (DOI: 10.1007/s00411-017-0705-6).
Aug. 2017
• S. A. Dewji, K. L. Reed, M. Hiller, Comparison of Organ Doses for PIMAL Stylized Phantoms in Upright and Bent Positions for Standard Irradiation Geometries. Radiation and Environmental Biophysics (DOI 10.1007/s00411-017-0698-1).
June 2017
• K.G. Veinot, M.B. Bellamy, K.F. Eckerman, M.M. Hiller, S.A. Dewji, C.E. Easterly, N.E. Hertel, R. Manger. Effective Dose Rate Coefficients for Exposure to Contaminated Soil. Radiation and Environmental Biophysics (DOI: 10.1007/s00411-017-0692-7).
May 2017
• S. Dewji, Critical Issues in Radiation Protection Knowledge Management for Preserving Radiation Protection Research and Development Capabilities. Health Physics Journal (DOI: 10.1097/HP.0000000000000603).
Jan. 2017
• S. Dewji, S. Croft, N. Hertel. Sensitivity Analysis of High Resolution Gamma-ray Detection for Safeguards Monitoring at Natural Uranium Conversion Facilities. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment and Nuclear Instruments (DOI: 10.1016/j.nima.2016.12.018).
Dec. 2016
• M.B. Bellamy, K.F. Eckerman, K.G. Veinot, M.M. Hiller, S.A. Dewji, C.E. Easterly, N.E. Hertel, R.W. Leggett, R.P. Manger. Effective Dose Rate Coefficients for Immersions in Radioactive Air and Water. Radiation Protection Dosimetry (DOI: 10.1093/rpd/ncw103).
May 2016
• S. Dewji, N. Hertel, S. Croft, D. Lee, J. Chapman, R. McElroy. Validation of Gamma-Ray Detection Techniques for Safeguards Monitoring at Natural Uranium Conversion Facilities. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment and Nuclear Instruments (DOI: 10.1016/j.nima.2016.03.069).
Mar. 2016
• S. Dewji, M. Bellamy, N. Hertel, R. Leggett, S. Sherbini, M. Saba, K. Eckerman. Estimated Doses to Members of the Public from External Exposure to Patients with 131I Treatment. Medical Physics (DOI: 10.1118/1.4915084).
Apr. 2015
• S. Dewji, N. Hertel, and A. Ansari. Assessing Internal Contamination After a Radiological Dispersion Device Using a 2x2-inch Sodium Iodide Detector. Radiation Protection Dosimetry (DOI 10.1093/rpd/nct014).
July 2013
