Sr. Nuclear Criticality Safety Engineer

ABOUT THE ROLE

We are seeking a Sr. Nuclear Criticality Safety Engineer to join our team supporting the Oak Ridge National Laboratory! This position is full-time and will be based out of Oak Ridge, Tennessee.

• Stops work without fear of reprisal for unsafe conditions potentially affecting personnel safety or environmental risk.
• Assists in identification of the need for and/or development of Nuclear Criticality Safety (NCS) compliance training to support Isotek activities.
• Maintains awareness of NCS-related operations within Project.
• Participates in critiques/investigations involving NCS issues, as requested.
• Provides field support of operations in nuclear criticality safety, including periodic surveillance and assessment of conformance to Nuclear Criticality Safety Approval (NCSA) requirements.
• Supports building activities, such as construction and maintenance, to ensure criticality safety.
• Reviews Work Packages, procedures, and other project documents to ensure compliance with NCS requirements.
• Performs Criticality Accident Alarm System (CAAS) assessments.
• Performs audits, surveillances, and assessments of the NCS Program.
• Functions as primary interpretative authority on matters related to NCS Program.
• Maintains knowledge of NCS-related standards, guides, and codes.
• Prepares and peer reviews NCS documents such as:
  Fissile Material Operations (FMO) Screens, Nuclear Criticality Safety Evaluations (NCSEs), NCSAs, and NCS Reports (NCSRs).
• Maintains familiarity with assigned FMOs.
• Reviews and approves designs, plans, procedures, instructions and administrative aids that implement NCS requirements or potentially impact NCS.
• Performs NCSE/A implementation walk downs and provides input to site emergency plans as requested.
• Delivers NCS training and evaluates its effectiveness.
• Reviews applicable facility Safety Basis documents for NCS issues.
• Supports the execution of integrated Safety Management System (ISMS) guiding principles and core functions and the Safety Culture.

• Education & Years of Experience – Bachelor’s Degree in Engineering and 10+ years of relevant experience.
• Citizenship – To be considered, you MUST be a United States (U.S.) citizen due to the federal nature of the work.
• Clearance – Applicants selected will be subject to a federal background investigation and must meet eligibility requirements for access to classified information or matter.
• Experience performing Criticality Accident Alarm System (CAAS) assessments.
• Experience performing audits, surveillances, and assessments of the NCS Program.
• Ability to perform calculations with Monte Carlo neutron transport codes.
• Ability to perform hand calculations for criticality.
• Proficient knowledge of Microsoft Office.
• Strong communication, verbal and written skills.
• Broad experience in the development and implementation of NCS Programs.

The DOE's Oak Ridge National Laboratory (ORNL), located in Oak Ridge, Tennessee, conducts research and development to create scientific knowledge and solutions that strengthen the nation's leadership in key areas of science; increase the availability of clean, abundant energy; restore and protect the environment; and contribute to national security. ORNL also performs isotope production, information management, and technical program management energy.gov.

GEM Technologies, Inc. (GEM) is an award‑winning federal contractor with more than 30 years of experience providing environmental, construction, facility management, and technical services to federal agencies, state and local governments, and commercial organizations. Founded in 1994 as a nuclear engineering firm to support federal operations in East Tennessee, GEM has since expanded into a nationwide, multi‑disciplinary provider with over 270 employees and a diverse portfolio of contracts in the environmental, nuclear, and defense sectors.

Some reasons to join GEM are:

• Our philosophy – We believe in the power of effective collaboration and recognize that good partnerships are the building blocks to success.
• Our relationships – Partnering with federal clients, we solve complex problems, exceed expectations, and advance critical missions.
• O…