Profile

SUMMARY

JAMES STUART BAKER
NUCLEAR CRITICALITY SAFETY ENGINEER

Mr. Baker has thirty-eight years of nuclear engineering experience, with thirty-three years in nuclear criticality safety and five years in commercial nuclear fuel design. He has proven skills in performing a wide variety of nuclear analyses, supporting operations and facility management, coordinating complex work activities and communicating technical topics.

EDUCATION

M.S., Nuclear Engineering, University of Virginia B.S., Nuclear Engineering, University of Virginia

WORK EXPERIENCE Spectra Tech, Inc.

August 2020 – present – Nuclear Criticality Safety Engineer Level VII. Provide direct, on-site NCS support to SRNS Nuclear Criticality Safety organization. Qualified SRNS NCS engineer performing NCS analyses and review of NCS evaluations for fissionable material operations. Also, provide SME support to planned plutonium pit production operations at SRNS.

January 2019 – July 2020 – Nuclear Criticality Safety Engineer Level VII. Provided direct, on-site NCS support to BWXT Lynchburg. In this position, Mr. Baker provided SME level support to assist BWXT in the nuclear criticality safety evaluation upgrade project. In this capacity, Mr. Baker performed and reviewed NCSEs for fissionable material operations related to nuclear fuel production operations.

Savannah River Nuclear Solutions, LLC
December 2012 to January 2019- Principal Technical Advisor in the Nuclear and Criticality Safety Engineering Organization. Perform and review evaluations for fissile material processing. Review policies, procedures, standards and regulatory requirements to guide programmatic improvements. Mentor new and mid-career professionals. Organize the NCS Colloquium for professional development, including preparation and review of talks. Perform operational reviews and programmatic assessments.

Los Alamos National Laboratory
August 1998 to November 2012- Technical Staff Member in the Criticality Safety Group. Provided technical criticality safety guidance to all laboratory organizations that handled fissile material, including performing and documenting the associated criticality safety evaluations. Frequent use of MCNP code system. Taught formal criticality safety training courses for laboratory workers and external personnel and provided informal training sessions. Assisted the laboratory Emergency Response Personnel. Performed independent programmatic reviews for other DOE and NRC-licensed facilities that processed fissile material.

Y-12 National Security Complex
April 1995 to August 1998- Group Leader in the Nuclear Criticality Safety Department. Managed the group responsible for providing nuclear criticality safety support to the Y-12 Plant Enriched Uranium Organization’s Chemical Recovery Areas, the Waste Management Organization, and the Analytical Services Organization. Planned and scheduled workload for up to sixteen criticality safety engineers.

SPECTRA TECH, INC.

JAMES STUART BAKER NUCLEAR CRITICALITY SAFETY ENGINEER

Ensured adequate training and provided mentoring. Gave performance reviews and feedback. Reviewed analyses and procedures.

Y-12 National Security Complex
October 1989 to March 1995- Criticality Safety Engineer in the Nuclear Criticality Safety Department. Performed criticality safety evaluations, including documenting process descriptions and potential upset conditions based on operations input, and analyzing systems with empirical methods and Monte Carlo codes. Ensured appropriate guidance was incorporated into operating procedures and postings and performed area surveillances. Provided technical guidance for Criticality Accident Alarm System issues. Performed operation reviews and addressed infractions. These duties included providing evaluations and guidance for the Portsmouth Gaseous Diffusion Plant staff from October 1993 to October 1994.

Westinghouse Commercial Nuclear Fuel Division
April 1987 to September 1989- Senior Radiological and Environmental Engineer in the Regulatory Affairs Department. Nuclear criticality safety analyses to support operations at the nuclear fuel fabrication facility in Columbia, South Carolina. Benchmarked the SCALE code system for homogenous, low-enriched uranium systems. In charge of oversight of the low-level waste program.

Westinghouse Commercial Nuclear Fuel Division
February 1982 to April 1987- Nuclear Engineer in the Core Engineering Department. Performed nuclear design and reloaded safety analyses for commercial Pressurized Water Reactors (PWRs). Developed loading patterns for emergency fuel redesigns for PWRs. Performed fuel management studies and enrichment settings for PWRs. Programmed and supported the PWR load follow analysis computer codes.

CERTIFICATIONS, QUALIFICATIONS, AND TRAINING

• Active DOE Q clearance and Human Reliability Program

• DOE Radiological Worker Level II

• Member of ANS-8 Subcommittee for Nuclear Criticality Safety

• Chairman of ANSI/ANS-8.23 Working Group for Nuclear Criticality Accident Emergency Planning

  and Response

• Member of ANSI/ANS-8.19 Working Group for Administrative Practices in Nuclear Criticality

  Safety

• Member of ANSI/ANS-8.3 Working Group for Criticality Accident Alarm System.

• Member of ANSI/HPS N12.1 Working Group for Fissile Material Symbol

• Nuclear Criticality Safety Division Secretary (1999), Treasurer (2000), Vice-Chair (2002) and Chair

  (2003)

• Member of NCS Division Education Committee

• Assisted initial development of International Standards related to criticality safety under ISO TC 85,

  Subcommittee 5, Working Group 8

• Coordinated and presented ANS Professional Division Workshop on Criticality Accident Source

  Terms with international participation (November 2008)

• Registered as Professional Nuclear Engineer (Pennsylvania, 1986)

• Numerous professional development training classes in the areas of project management, personnel

  management, problem solving and decision-making, and personal productivity

SPECTRA TECH, INC.

PUBLICATIONS

JAMES STUART BAKER NUCLEAR CRITICALITY SAFETY ENGINEER

• Transactions of the American Nuclear Society, Volume 65, pp 250-261, Criticality Safety Evaluation for Dry Vacuum System Components, Baker, J.S. and G.D. Ellis, June 1992.

• Transactions of the American Nuclear Society, Volume 70, pp 210-211, Testing of the Y-12 Plant Criticality Detectors at the Sandia Pulsed Reactor Facility, Baker, J.S., J. A. Smith and D.T. Berry, June 1994.

• Fifth International Conference on Nuclear Criticality, Estimating Radius of Coverage of the Y-12 Plant Criticality Accident Alarm System from Experiments at the Los Alamos Critical Experiments Facility, Baker, J.S. and J.A. Smith, September 1995.

• Transactions of the American Nuclear Society, Volume 72, pp 211, Single Parameter Controls for Nuclear Criticality Safety at the Oak Ridge Y-12 Plant, Baker, J. S. and W. M. Peek, June 1995.

• International Criticality Safety Benchmark Evaluation Project, Unreflected and Steel-Reflected Massive Enriched Uranium Metal Spherical and Hemispherical Assemblies, HEU-MET-FAST- 039, Baker, J.S. and R.W. Brewer, September 2000.

• Transactions of the American Nuclear Society, Volume 87, pp 169-171, Nuclear Criticality Safety Aspects of Emergency Response at the Los Alamos National Laboratory, Baker J.S., June 2003.

• Transactions of the American Nuclear Society, Volume 89, pp 173-175, Use of CZT Gamma Detector on Nitric Acid Process Evaporators at the Los Alamos Plutonium Facility, Baker, J.S., et al, November 2003.

• Transactions of the American Nuclear Society, Volume 93, pp 203-205, Recent Evolution of Standard ANSI/ANS-8.23, Baker, J.S., 2005.

• Transactions of the American Nuclear Society, Volume 94, Criticality Safety for Godiva Pre- Disassembly Operations, Miller, J.A. and J.S. Baker, 2006.

• Transactions of the American Nuclear Society, Volume 94, Criticality Safety Above a Multiplication of 20 (The Godiva Disassembly), Miller, J.A. and J.S. Baker, 2006.

• Transactions of the American Nuclear Society, Volume 111, pp 850-853, Assessment of the Need for a Criticality Accident Alarm System, Baker J.S., et al, November 2014.

• Transactions of the American Nuclear Society, Volume 114, pp 521-524, Limiting Surface Density Method Application to Large Arrays of Highly Heterogeneous Shipping Packages, Stover, T.E., J.S. Baker, and M.D. Ratliff.

• Transactions of the American Nuclear Society, Volume 116, Considerations for Using FGE Conversion Factors in Type A Shipping Packages at the Savannah River Site, B.M. Williamson and J.S. Baker.

• Transactions of the American Nuclear Society 2017 Nuclear Criticality Safety Division Topical Meeting, Verification Suite for the Application of the Limiting Surface Density Method to Arrays of 9975 Shipping Packages, J.S. Baker, et al.

• Nuclear Science and Engineering, “Limiting Surface Density Method Adapted to Large Arrays of Heterogeneous Shipping Packages with Nonlinear Responses”, T.E. Stover, J.S. Baker, M.D. Ratliff and G.C. Mitschelen, March 2018.

SPECTRA TECH, INC.