Resident Inspectors

Hanford

Padraic Fox
Padraic Fox

Padraic Fox has been a Resident Inspector at Hanford site since November 2014.  After joining the Board’s technical staff in September 2009 and before becoming a Resident Inspector, he was responsible for evaluating safety system designs and startup readiness activities associated with DOE defense nuclear facility design and construction projects.  His efforts were primarily focused on the Hanford Waste Treatment and Immobilization Plant, the Integrated Waste Treatment Unit at the Idaho National Laboratory, and both the Radioactive Liquid Waste Treatment Facility Upgrade Project and the Transuranic Waste Facility at Los Alamos National Laboratory.

Prior to joining the Board’s staff, Mr. Fox spent 10 years working as a consulting engineer and project manager. He has 23 years of active duty service in the United States Navy, serving on nuclear powered surface ships and as an engineering duty officer.  

Mr. Fox has a Master of Science Degree in Mechanical Engineering from the Naval Post Graduate School, and a Bachelor of Science Degree in General Engineering from the United States Naval Academy.

Ben Caleca

Mr. Ben Caleca joined the Board’s technical staff in May 2010 and has served as a Resident Inspector at the Hanford site since November 2018.  At headquarters, he conducted technical safety reviews involving a broad range of topics, including structural and earthquake engineering, the safety bases for defense nuclear facility design and construction projects, and the safety bases for multiple operating defense nuclear facilities.  Mr. Caleca served as the staff lead for safety reviews at facilities such as the Plutonium Facility at Los Alamos National Laboratory, the H-Canyon facility at the Savannah River Site, and most recently, the PUREX Storage Tunnels at the Hanford Site.

Mr. Caleca earned a Bachelor of Science degree in Civil Engineering from the University of Michigan, Ann Arbor, and a Master of Science degree in Structural Engineering from the University of California, Berkeley.

Perry Meyer

Dr. Perry Meyer joined the Board’s technical staff in November 2010 and has served as a Resident Inspector at the Hanford site since July 2021.  At headquarters, he was responsible for conducting technical safety reviews of operating DOE defense nuclear facilities, evaluating safety system designs at DOE defense nuclear facility design and construction projects, and assessing the adequacy of DOE safety standards.

Prior to joining the Board’s staff, Dr. Meyer spent 18 years as a staff scientist in the Fluids and Computational Engineering Group at DOE’s Pacific Northwest National Laboratory in Richland, WA.  Dr. Meyer holds Bachelor of Science, Master of Science, and Doctor of Philosophy degrees in Aeronautics and Astronautics from the University of Washington.

Los Alamos National Laboratory

David Gutowski
David Gutowski

Mr. David Gutowski has been one of the Board’s Resident Inspectors at the Department of Energy's Los Alamos National Laboratory in New Mexico since January 2018.  Mr. Gutowski joined the Board's technical staff in June 2003.  Before being assigned to Los Alamos, he was the Board’s Resident Inspector at the Hanford Site near Richland, Washington.  Before these field positions, Mr. Gutowski served in a variety of positions at the Board’s headquarters in Washington, DC.  His most recent headquarters position was as the Board's cognizant engineer for the Savannah River Site.  He previously served as the Board’s cognizant engineer for the Y-12 National Security Complex and also has held responsibility for staff activities related to independent safety oversight of nuclear materials stabilization, high-level waste management, and chemical hazards.  Mr. Gutowski has a Master of Science degree in Nuclear Engineering from the University of California, Berkeley and a Bachelor of Science degree in Chemical Engineering from Carnegie Mellon University.  He is a licensed Professional Engineer in Maryland.

Jonathan Plaue
Jonathan Plaue

Jonathan Plaue has more than 15 years of experience in overseeing safety at the Department of Energy’s defense nuclear facilities.  Dr. Plaue has been a member of the Board’s technical staff since 2001 and was assigned as a Resident Inspector at Los Alamos National Laboratory (LANL) in September 2013.  Previously, he served as a Resident Inspector at Lawrence Livermore National Laboratory (LLNL) in California.  Prior to his assignment at LLNL, Jonathan served as the technical staff lead for safety oversight at LANL.  His earlier assignments at the Board included technical reviews and safety analyses related to nuclear chemical processing, high-level waste treatment, and nuclear materials processing and storage.  

Dr. Plaue was the 2009 recipient of the Board’s prestigious John W. Crawford, Jr. Award for Staff Excellence.  This honor is bestowed annually in recognition of the staff member who is considered to have provided the most valuable individual contribution to the work of the Board during the previous year either by a single action, or through a continuously high level of effort.

Dr. Plaue holds a Bachelor of Science degree in Chemical Engineering and a Master of Science in Nuclear Engineering from the Massachusetts Institute of Technology and a Doctor of Philosophy in Radiochemistry from the University of Nevada, Las Vegas.

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Alan Gurevitch

Mr. Gurevitch joined the Defense Nuclear Facilities Safety Board as a Resident Inspector at Pantex in 2021.  Mr. Gurevitch joined the Board after serving for 29 years with Los Alamos National Laboratory (LANL) in Los Alamos, New Mexico. He was stationed at Pantex from 2011 to 2021, serving as a LANL Liaison in the Tri-Lab, working on stockpile projects in collaboration with Pantex and Sandia National Laboratory.

Mr. Gurevitch holds a Bachelor of Science degree in Mechanical Engineering and a Master of Science degree in Metallurgical and Materials Engineering, both from the University of Texas, El Paso.

Savannah River Site

Zachary McCabe
Zachary McCabe

Mr. McCabe joined the Board’s technical staff in June 2011.  During tenure with the staff, he has conducted technical safety reviews in the areas of structural and seismic engineering, the safety bases for defense nuclear facilities, and work planning and control.  Mr. McCabe has also conducted reviews of Critical Decision milestones of designs for new defense nuclear facilities and major modifications to existing facilities.  Since November 2015, Mr. McCabe has been one of the DNFSB’s Resident Inspectors at the Savannah River Site.  As a Resident Inspector, Mr. McCabe advises the Board on the overall safety conditions of defense nuclear facilities at Savannah River, and participates in technical reviews conducted by the Board and its staff related to the design, construction, operation, and decommissioning of defense nuclear facilities.  He also acts as the Board’s liaison with DOE and contractor management at the Savannah River Site, state and local agencies, the public, and industry officials.

Mr. McCabe has a Master of Science Degree in Civil Engineering from the Georgia Institute of Technology and a Bachelor of Science Degree in Civil Engineering from Carnegie Mellon University.

Leigh Lin

Ms. Leigh Lin joined the Board’s technical staff in June 2012 and has served as a Resident Inspector at the Savannah River Site since September 2021.  Prior to becoming a Resident Inspector, she served as the Board’s cognizant engineer for the Savannah River Field Office.  She also previously served as the Board’s cognizant engineer for the Waste Isolation Pilot Plant.  At headquarters, she conducted technical reviews of safety bases, new facility designs, and deactivation activities at DOE defense nuclear facilities, including at the Savannah River Site, Hanford Site, Oak Ridge National Laboratory, and Los Alamos National Laboratory.

Ms. Lin holds a Bachelor of Science degree in Nuclear, Plasma, and Radiological Engineering from the University of Illinois at Urbana-Champaign and a Master of Science degree in Nuclear Science and Engineering from the Massachusetts Institute of Technology.

Eric Richardson

Mr. Richardson joined the Defense Nuclear Facilities Safety Board as a Resident Inspector at the Savannah River Site in 2021. Prior to joining the board, Mr. Richardson worked at SRS with the Savannah River Tritium Enterprise since 2015 where he held the roles of Training Manager and H-Area New Manufacturing Deputy Facility Manager. Prior to SRS, he served in United States Navy for 12 years as a Nuclear Submarine Officer.

Mr. Richardson holds a Bachelor of Science degree in Mechanical Engineering from Penn State University and holds a Naval Nuclear Propulsion Engineer certification from Naval Reactors. He is pursuing a Master of Science degree in Engineering Management from Old Dominion University.

Y-12 National Security Complex / Oak Ridge National Laboratory

Matthew Duncan

Mr. Matthew Duncan has been a Resident Inspector at the Y-12 National Security Complex and Oak Ridge National Laboratory since August 2018.  He joined the Board’s technical staff in 2000 and has held a broad range of positions at the Board’s headquarters in Washington, DC, and in the field.  Most recently, he served as the Supervisory Engineer for Engineering Analysis within the technical staff’s Nuclear Programs and Analysis group.  His previous positions include serving as the technical staff’s lead for safety oversight of sites including Lawrence Livermore National Laboratory, Sandia National Laboratories, the Y-12 National Security Complex, and tritium facilities at three sites.  He has also led the Board’s safety oversight of design and construction projects including the Transuranic Waste Facility at Los Alamos National Laboratory, the Uranium Processing Facility at the Y-12 National Security Complex, and the Salt Waste Processing Facility at the Savannah River Site.  His field experience includes previous assignments as a Board Resident Inspector at the Pantex Plant and at the Savannah River Site.

Mr. Duncan has a Bachelor of Science in Engineering degree in Chemical Engineering from the University of Michigan, Ann Arbor, and a Master of Engineering degree in Chemical Engineering from Princeton University.

Brandon Weathers

Mr. Brandon Weathers joined the Board’s technical staff in January 2016 and has been one of the Board’s Resident Inspectors at the Y-12 National Security Complex and Oak Ridge National Laboratory since November 2018.  Prior to his assignment as a Resident Inspector, Mr. Weathers worked at the Board’s headquarters in Washington, DC, performing independent oversight of safety basis development and implementation for facilities across the Department of Energy’s defense nuclear complex.  He also served as the Board’s cognizant engineer for the Y-12 National Security Complex.  Before joining the Board’s staff, Mr. Weathers spent 8 years working on nuclear power plant fuel and reactor core design, accident analysis, and licensing with MPR Associates, Inc. and Southern Nuclear Operating Company.

Mr. Weathers has a Bachelor of Science degree in Nuclear and Radiological Engineering and a Master of Science degree in Mechanical Engineering from the Georgia Institute of Technology.