Nuclear Criticality Safety Engineer

Date: Sep 13, 2023

Location: Piketon, OH, US

Company: BWX Technologies

At BWX Technologies, Inc. (NYSE: BWXT), we are People Strong, Innovation Driven. Headquartered in Lynchburg, Va., BWXT provides safe and effective nuclear solutions for national security, clean energy, environmental remediation, nuclear medicine and space exploration. With approximately 6,400 employees, BWXT has 12 major operating sites in the U.S. and Canada. We are the sole manufacturer of naval nuclear reactors for U.S. submarines and aircraft carriers. Our company supplies precision manufactured components, services and fuel for the commercial nuclear power industry across four continents. Our joint ventures provide environmental remediation and nuclear operations management at more than a dozen U.S. Department of Energy and NASA facilities. BWXT’s technology is driving advances in medical radioisotope production in North America and microreactors for various defense and space applications. Follow us on Twitter at @BWXTech and learn more at



This position participates in the performance of nuclear criticality safety evaluations. Expected to have expert level knowledge on the use and meaning of all of the national standards. Will be engaged in the development of criticality safety technical proposals, project cost/schedule documentation, and provides technical leadership to resolve issues, including conferring with project officials to resolve situations where hazards are beyond acceptable levels.


Major Duties and Responsibilities:

  • Works with operating organization personnel and senior criticality safety engineers to reach consensus agreement as to the normal and credible abnormal process conditions.
  • Ensures nuclear criticality safety results, materials, processes and final products meet quality specifications and are completed according to established requirements.
  • Assists in the reviews of new or proposed changes to existing significant quantity fissile/fissionable material operating procedures and assists in making recommended changes or additions to guidelines and limits to mitigate the consequences of inadvertent nuclear criticality.
  • Potential for interface with the Department of Energy (DOE), Department of Transportation (DOT), Nuclear Regulatory Commission (NRC), and National Nuclear Security Administration (NNSA) for criticality safety issues and matters.


Qualifications / Requirements:

  • Completion of a BS, MS, or PhD in nuclear engineering, nuclear physics or related discipline.
  • Typically a minimum of 4 years nuclear safety engineering experience required.
  • Experience in broad range of analytical methods used in developing safety analyses and risk assessments and knowledge of Department of Energy and/or Nuclear Regulatory Commission nuclear safety and unreviewed safety question guides and standards preferred.
  • Ability to develop criticality safety strategies, specifying criticality safety structures, systems, and components (SSC).
  • Ability to develop criticality safety evaluation (NCSE) and supporting criticality calculation in accordance with DOE standards and guidelines.
  • Knowledge of the use of the common computer codes for modeling and physical interpretation.
  • Demonstrated DOE and/or commercial nuclear experience performing criticality safety analytical and operation tasks in accordance with ANSI/ANS national standards.
  • Demonstrated experience with criticality safety analysis tools and experience with qualitative and quantitative accident analysis techniques.


As a federal government contractor, BWX Technologies, Inc. and any subsidiaries, affiliates and related entities (“BWXT” or the “Company”) complies with all federal, state, and local laws and customer requirements regarding COVID-19 and other health and safety protocols.  As such, all BWXT new hires will be required to adhere to applicable Company COVID-19 requirements within the workplace as a condition of employment.


Applicants selected will be subject to a Federal background investigation and must meet eligibility requirements for access to classified information or matter. Position requires U.S. citizenship with (no dual citizenship) and ability to obtain and maintain a Department of Energy (DOE) security clearance which involves an extensive criminal and financial background investigation, drug test and previous employment reference verifications.


BWXT supports diversity and is committed to the concept of Equal Employment Opportunity. We have established procedures to ensure that all personnel actions such as recruitment, compensation, career development, benefits, company-sponsored training and social recreational programs are administered without regard to race, color, religion, gender, national origin, citizenship, age, disability or veteran status.


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