Senior Nuclear Mechanical Engineer

Overview

We are seeking a Senior Nuclear Mechanical Engineer to join the Systems Engineering (SE) Group within the Research Reactors Division (RRD) at Oak Ridge National Laboratory (ORNL). Our group is responsible for the HFIR configuration management program. The SE Group provides technical support to operations and maintenance and performs systems analysis. In this role, you will perform design engineering and support manufacturing and fabrication of reactor core components, fuel elements, control rods and plates, etc.

You will also maintain cognizance of assigned HFIR structures, systems, and components (SSCs) and provide systems engineering support for operations and maintenance.

• Lead and independently execute engineering design efforts for new and upgraded HFIR structures, systems, and components.
• Implements modifications in accordance with RRD configuration control processes.
• Perform and validate complex calculations; apply codes and standards; develop detailed design and material specifications.
• Provide technical oversight for fabrication, assembly, and implementation of approved design changes.
• Ensure technical accuracy and approve drawings, system documentation, and as-built records.
• Lead troubleshooting efforts and develop technically sound work instructions for maintenance activities.
• Provide field technical support and contribute to preventive and lead preventive and predictive maintenance planning efforts.
• Lead operability assessments and evaluate performance data to identify trends, vulnerabilities, and risks.
• Conduct system walk-downs, evaluate system health, and help identify spare-parts and planning needs.
• Deliver ORNL's mission by aligning behaviors, priorities, and interactions with our core values of Impact, Integrity, Teamwork, Safety, and Service. Promote equal opportunity by fostering a respectful workplace - in how we treat one another, work together, and measure success.

• A BS degree in mechanical engineering or related field, and at least 8 years of related experience.
• Experience with ASME piping codes and process piping system design.
• Experience diagnosing mechanical equipment problems and developing formal work package instructions for performance and documentation of repairs.
• A strong understanding of reading and interpreting mechanical design drawings.

• Experience supporting engineering, maintenance, or project tasks in a technical environment.
• Ability to read mechanical drawings and apply basic GD&T concepts.
• Experience troubleshooting mechanical or HVAC systems.
• Understanding of machining and fabrication practices, including welding/joining techniques, combined with a sound understanding of machine design.
• Exposure to regulated, safety-focused environments (DOE, NRC, or similar).

• Work involves various physical requirements and working conditions. As such, a pre-hire physical will be required after offer.
• This position requires access to technology that is subject to export control requirements. Successful candidates must be qualified for such access without an export control license.

For employment at Oak Ridge National Laboratory (ORNL), a Real  form of identification will be required. Additionally, ORNL is subject to Department of Energy (DOE) access restrictions. All employees must also be able to obtain and maintain a federal Personal Identity Verification (PIV) card as mandated by Homeland Security Presidential Directive 12 (HSPD-12) and Department of Energy (DOE) Order 473.1A, which requires a favorable post-employment background investigation.

To obtain this credential, new employees must successfully complete and pass a Federal Tier 1 background check investigation. This investigation includes a declaration of illegal drug activities, including use, supply, possession, or manufacture within the last year. This includes marijuana and cannabis derivatives, which are still considered illegal under federal law, regardless of state laws.

For foreign national candidates:
If you have not resided in the U.S. for three consecutive years, you are not eligible for the PIV credential and instead will need to obtain a favorable Local Site Specific Only (LSSO) risk determination to maintain employment. Once you meet the three-year residency requirement, you will be required to obtain a PIV credential to maintain employment.

We offer 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…