Nuclear Criticality Safety Engineer

X-energy LLC conducts a thorough recruiting process and will never issue offers without interview to discuss qualifications and responsibilities. All applications will be submitted via our company career page, www.x-energy.com/careers/. We will never ask you to provide payment information as part of the recruiting process. If anyone claiming to represent X-energy directs you in a manner otherwise, please contact us at www.x-energy.com/contact-us.
Job Description
This role is responsible for providing technical capabilities in Nuclear Criticality Safety (NCS) to ensure TRISO-X Fuel Fabrication Facility fissile materials are processed, stored, and handled safely to prevent an inadvertent nuclear criticality, and personnel and the public/environment are protected in accordance with Nuclear Regulatory Commission (NRC) requirements in 10 CFR 70. This role will transition from design/licensing support through start-up/commissioning to supporting day-to-day facility operations.
Job Profile Tasks/Responsibilities
Define the safety basis for fissile material operations by evaluating and analyzing equipment, processes, and procedures; implement and facilitate NCS programs and procedures; and monitor the effectiveness of NCS items relied on for safety (IROFS), limits, controls, and barriers.
Develop/review/revise NCS evaluations to demonstrate subcriticality for normal operations and process upsets of TRISO-X fuel fabrication processes and TRISO-X Facility operations, including processes involved in producing TRISO fuel forms, quality control activities, recycling/recovery of process materials, managing effluents and waste materials, and conducting maintenance activities.
Develop/review/revise calculations by executing NCS computer codes and models to support NCS evaluations.
Participate in and/or facilitate Process Hazards Analysis activities with multidiscipline teams to identify potential criticality, radiological, chemical, and fire/explosion hazards to support the Integrated Safety Analysis (ISA) process.
Evaluate accident sequences to determine limits and controls necessary to demonstrate double contingency and perform ISA risk assessment to identify IROFS to ensure a criticality is highly unlikely.
Consult with and advise operations, maintenance, and engineering personnel on the NCS impacts of new or proposed changes to processes, procedures, and facility designs/modifications.
Participate in design reviews.
Conduct surveillances, inspections, walk-downs, investigations, and audits/assessments of fissile material operations, and unusual incidents to ensure compliance with approved procedures and safety bases.
Develop/revise/deliver NCS training to operations, maintenance, and other personnel.
Develop/revise NCS postings and operator aids to implement administrative controls to ensure they are unambiguous, easily understood, and readily achievable.
Provide support to the emergency response team.
Maintain professional demeanor and behavior at all times in all forms of communication.
Perform other duties as assigned by manager.
Level II: Support team members with the execution of the core tasks and responsibilities listed in the Job Profile Task/Responsibilities section of this document
Level III: Execute the core tasks and responsibilities listed in the Job Profile Task/Responsibilities section of this document.
Level IV: Lead the execution of the core tasks and responsibilities listed in the Job Profile Task/Responsibilities section of this document.
Provide feedback and guidance to more junior team members with the execution of the core tasks and responsibilities listed in the Job Profile Task/Responsibilities section of this document.
Job Profile Minimum Qualifications
Bachelor’s degree in any STEM related field from an ABET-accredited college or university.
Level II: Typically, three plus years of experience in the nuclear criticality safety field with preparing, reviewing, and/or revising safety basis evaluations that identify and document NCS limits and controls.
Experience using SCALE, MCNP, or other NCS computer codes and models to demonstrate subcriticality.
Ability to become qualified under a formal training and qualification program consistent with guidelines presented in ANSI/ANS-8.26-2007, Criticality Safety Engineer Training and Qualification Program.
Level III: Typically, five plus years of experience in the nuclear criticality safety field with preparing, reviewing, and/or revising safety basis evaluations that identify and document NCS limits and controls.
Experience using SCALE, MCNP, or other NCS computer codes and models to demonstrate subcriticality.
Ability to become qualified under a formal training and qualification program consistent with guidelines presented in ANSI/ANS-8.26-2007, Criticality Safety Engineer Training and Qualification Program.
Working knowledge of relevant industry codes and standards for nuclear criticality safety in non-reactor facilities and operations. Understanding and experience applying regulatory requirements, standards, and guidance.
Level IV: Typically, ten plus years of experience in the nuclear criticality safety field with preparing, reviewing, and/or revising safety basis evaluations that identify and document NCS limits and controls.Three years may be credited towards years of experience when successfully performing the following duties: Preparing and Reviewing ISA Risk Assessments, Leading Process Hazards Analysis, and Preparing ISA Summary documentation.
Experience using SCALE, MCNP, or other NCS computer codes and models to demonstrate subcriticality.
Ability to become qualified under a formal training and qualification program consistent with guidelines presented in ANSI/ANS-8.26-2007, Criticality Safety Engineer Training and Qualification Program.
Working knowledge of relevant industry codes and standards for nuclear criticality safety in non-reactor facilities and operations. Understanding and experience applying regulatory requirements, standards, and guidance.
Location: 150 Lafayette Dr., Oak Ridge TN 37830
Work Site Expectations: 5 days onsite
Travel Expectations: up to 10% or as needed
Hours: standard office schedule is 8:00am-5:00pm ET, Mon-Fri
Compensation
As required by Maryland and other applicable state law, X Energy, LLC (X-energy) lists the expected compensation range for a publicly advertised job opportunity based upon the job requirements (e.g. education/training, experience, skill sets, etc.). Individual candidates who meet the job requirements for the posted position will be offered a salary within this range based on their respective levels of education/training, experience, and other qualifications unique to them. Salary ranges may vary based on the specific office location and region referenced in the posting to take into consideration differences in cost of living and may not be reflective of all regions. Please note that compensation ranges listed for US job postings reflect base salary only and do not include benefits or other incentives.
Offers within the posted salary range are commensurate with the individual’s qualifications for the position, along with a view on internal equity, market data, and room for growth. The salary range for this position is:
Level II - $93,188 - $122,063/ Level III - $112,875 - $149,625/ Level IV - $139,125 - $186,375
Position Job Classification
Full time - Exempt
Benefits
X Energy, LLC offers a robust benefits package that includes a 401K plan with an employer match, Medical/Dental /Vision Insurance, Life and Disability Insurance, Paid Time Off, and a Tuition Reimbursement/Professional Development policy that supports the continuing education of our employees.
An Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
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