Credentials that matter
Skills and tools
- NRC Regulations
Required qualifications
- Bachelor's, master's, or doctoral degree in nuclear, mechanical, chemical, or aerospace engineering, or a closely related technical field.
- Five or more years of relevant experience in reactor thermal-hydraulics, nuclear safety analysis, reactor transient analysis, or a closely related field.
- A relevant advanced degree may substitute for a portion of the professional experience.
- Demonstrated experience developing and executing systems-level transient models using RELAP 5.
- Strong foundation in heat transfer, fluid mechanics, thermodynamics, and reactor thermal-hydraulics. defining and analyzing reactor transients or accident scenarios, including initial conditions, boundary conditions, equipment response, operator or control actions, and acceptance criteria. evaluating the reasonableness and applicability of models, correlations, assumptions, and results rather than treating analysis software as a black box. documenting engineering analyses in clear, reviewable technical reports or calculation packages.
- Ability to work independently while collaborating effectively across engineering and licensing disciplines. with verification and validation, uncertainty quantification, sensitivity analysis, scaling, bias evaluation, or code applicability assessments.
- Familiarity with experiment design, separate-effects and integral-effects testing, benchmark problems, and the use of test data to validate analytical methods. working under a nuclear quality-assurance program or with safety-related analysis software and records. mentoring other analysts or providing technical review of safety-analysis work.
- Competencies We are looking for a Thermal-Hydraulics and Safety Analysis Engineer who is: Skilled at developing and interpreting systems-level reactor transient analyses.
About this role
The Thermal-Hydraulics and Safety Analysis Engineer is responsible for developing and executing systems-level thermal-hydraulic analyses that support the safety case, design basis, and licensing of Oklo's reactor systems.
Responsibilities
- Develop, maintain, and execute systems-level thermal-hydraulic models of reactor and plant behavior using RELAP 5 or comparable analysis codes.
- Analyze normal operating conditions, anticipated operational occurrences, design-basis events, and selected beyond-design-basis conditions relevant to the thermal-hydraulic safety case.
- Develop event-specific analysis plans, including initial and boundary conditions, assumptions, acceptance criteria, figures of merit, and treatment of uncertainties.
- Develop and document thermal-hydraulic safety-analysis methods, modeling guidance, and engineering practices appropriate to advanced reactor licensing.
- Establish and justify code, model, and correlation applicability for the physical phenomena and operating regimes being evaluated.
- Perform model verification, validation, sensitivity studies, uncertainty analyses, scaling evaluations, and comparisons with experiments, benchmarks, hand calculations, or higher-fidelity analyses.
- Identify gaps in available methods, data, and validation evidence, and define practical plans to close those gaps.
- Translate regulatory requirements and safety acceptance criteria into defensible analysis requirements and technical evaluation strategies.
- Prepare high-quality calculation packages, methodology documents, safety-analysis reports, licensing-application content, and responses to regulator questions.
- Evaluate design changes and provide timely feedback on their effects on transient response, safety margins, system performance, and the licensing basis.
Preferred qualifications
- Experience supporting NRC or DOE licensing applications, audits, topical or methodology reports, requests for additional information, or other regulatory interactions.
- Fluency with Python or another language used for model automation, data analysis, visualization, and quality checks.
- Competency with modern software engineering practices, including version control, automated testing, reproducible computing environments, and continuous integration.
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