Maintenance Engineer at the High Flux Isotope Reactor

Date: Mar 18, 2024

Location: Oak Ridge, TN, US, 37830

Company: Oak Ridge National Laboratory

Requisition Id 12711 


We are seeking a Maintenance Engineer for the High Flux Isotope Reactor (HFIR) who will be responsible for maintaining the HFIR equipment and facilities to ensure safe, reliable, predictable, and efficient operations. This scope includes the HFIR maintenance program and processes; implementation of corrective, predictive, preventative, and modification work activities; work scheduling; and outage management.  HFIR Maintenance Engineers work closely with members of the HFIR Beamline Operations Section, Science staff, Instrument Engineers, Reactor Operations personnel, and Melton Valley Complex Facility Supervisors.


This position resides in the Maintenance Engineering Group in the HFIR Maintenance Section, Research Reactors Division, Neutron Sciences Directorate at Oak Ridge National Laboratory (ORNL).  


Major Duties/Responsibilities: 

  • Maintenance Planning and Task Leading
    • Develop written directions to perform and document repetitive maintenance, corrective maintenance, and modification activities on nuclear safety related and non-nuclear equipment in an operating reactor facility.
    • Determine the required specifications for materials, and request/coordinate the procurement of required material.
    • Provide field work technical direction to craft supervisors and craft.
    • Coordinates with equipment and facility management to accomplish work safely and with efficient use of resources.
    • Identify risks to personnel or plant and work with RRD/NSD/NTD and other personnel to plan appropriate risk mitigation, including those concerning health physics, industrial hygiene, and safety.
    • Understand and implement human performance principles in the planning of maintenance work packages.
    • Ensure that UT-Battelle policies concerning environmental protection, safety, ALARA, and quality assurance are considered and complied with.
  • Maintenance Coordination and Scheduling
    • Administer the Computerized Maintenance Management System (CMMS) for a given area (e.g., mechanical, electrical, facilities), including the processing and initial task assignment or the administration of individual work activities.
    • Responsible for analyzing maintenance practices and procedures, equipment failures, identifying equipment operating and reporting results as assigned.
  • Some duties will require work to be performed in a radiological area.
  • Deliver ORNL’s mission by aligning behaviors, priorities, and interactions with our core values of Impact, Integrity, Teamwork, Safety, and Service. Promote diversity, equity, inclusion, and accessibility by encouraging a respectful workplace – in how we treat one another, work together, and measure success.


Basic Qualifications:

  • A BS degree in engineering, applied science, or a related discipline with 5 or more years of relevant experience.
    • An equivalent combination of education and experience may be considered (HS diploma with at least 9 years of relevant experience or AS degree in related discipline with at least 7 years of relevant experience)
  • Experience diagnosing equipment problems and developing formal work package instructions for documentation of repairs.


Preferred Qualifications:

  • A bachelor’s degree and a minimum of 10 years of relevant nuclear experience.
  • Experience working in a nuclear reactor environment in the mechanical, electrical, or operations field.
  • Familiarity with maintenance activities in a nuclear reactor operating environment.
  • HFIR facility knowledge.
  • Experience with predictive maintenance techniques and equipment reliability programs.
  • Familiarity with beamline operations and neutron scattering equipment.


Special Requirements:

Work involves various physical requirements and working conditions. As such, a pre-hire physical will be required after offer.


L clearance: This position requires the ability to obtain and maintain a clearance from the Department of Energy. As such, this position is a Workplace Substance Abuse (WSAP) testing designated position. WSAP positions require passing a pre-placement drug test and participation in an ongoing random drug testing program.


Benefits at ORNL:  

ORNL offers competitive pay and benefits programs to attract and retain hardworking people. The laboratory offers many employee benefits, including medical and retirement plans and flexible work hours, to help you and your family live happy and healthy. Employee amenities such as on-site fitness, banking, and cafeteria facilities are also provided for convenience.


Other benefits include the following: Prescription Drug Plan, Dental Plan, Vision Plan, 401(k) Retirement Plan, Contributory Pension Plan, Life Insurance, Disability Benefits, Generous Vacation and Holidays, Parental Leave, Legal Insurance with Identity Theft Protection, Employee Assistance Plan, Flexible Spending Accounts, Health Savings Accounts, Wellness Programs, Educational Assistance, and Employee Discounts. Relocation Assistance is available for certain positions.


If you have difficulty using the online application system or need an accommodation to apply due to a disability, please email: or call 1.866.963.9545.




This position will remain open for a minimum of 5 days after which it will close when a qualified candidate is identified and/or hired.

We accept Word (.doc, .docx), Adobe (unsecured .pdf), Rich Text Format (.rtf), and HTML (.htm, .html) up to 5MB in size. Resumes from third party vendors will not be accepted; these resumes will be deleted and the candidates submitted will not be considered for employment.

If you have trouble applying for a position, please email

ORNL is an equal opportunity employer. All qualified applicants, including individuals with disabilities and protected veterans, are encouraged to apply.  UT-Battelle is an E-Verify employer.

Nearest Major Market: Knoxville