Key skills
Thermal/Mechanical EngineeringHeat TransferThermodynamicsStructural MechanicsHydraulic EngineeringFluid DynamicsCore/Fuel Assembly HydraulicsSafety AnalysisTransient/Accident AnalysisLicensing Basis AssessmentsCodes & Methods DevelopmentAnalytical Methods Verification & ValidationEngineering AnalysisModel DevelopmentData AnalysisPythonMatlabVersion ControlGitFuel PerformanceCore Thermal HydraulicsLight Water Reactor TechnologyRegulatory SubmittalsIndustry CodesStandardsQuality Assurance ProcessesMaterials Behavior under IrradiationThermal Mechanical LoadsMATLABAssemblyCommunicationCollaboration
About this role
TSSD Services, Inc. is a leading provider of professional and technical staffing solutions in the energy and utility sectors, focusing on the nuclear industry. They are seeking experienced Fuel Engineers to support a U.S. fuel manufacturer on analysis, design, and optimization of fuel and core systems, requiring expertise in thermal, hydraulic, and safety analysis disciplines.
Responsibilities:
- Fuel performance & design analysis: Evaluate fuel and component behavior under normal, AOO, and accident scenarios; quantify margins and identify design improvements
- Thermal hydraulic modeling: Build and maintain models for core/assembly flow, pressure drop, CHF/MDNBR, and heat transfer; perform sensitivity/uncertainty studies
- Safety & licensing support: Execute transient/accident analyses (e.g., LOCA, RIA, loss of flow/heat sink); prepare inputs for safety case and regulatory submittals
- Codes & Methods: Apply and (as assigned) enhance validated analysis methods; perform model V&V, document assumptions and biases, and maintain configuration control under quality procedures
- Technical documentation: Produce clear calculation files, engineering memos, and customer facing technical reports; present results to internal and client design authorities
- Data & testing: Define or review test plans, analyze test data, and reconcile model to test results for model improvement
- Cross functional collaboration: Work with fuel design, materials, thermal hydraulics, manufacturing, and safety/licensing teams to drive integrated solutions
- Standards & compliance: Follow applicable industry codes/standards and internal QA practices; contribute to continuous improvement of engineering workflows
Requirements:
- BS in Nuclear, Mechanical, Chemical, or related Engineering (MS/PhD preferred for Safety Analysis or Methods roles)
- 3+ years directly relevant experience in at least one focus area: Thermal/Mechanical, Hydraulic, Safety Analysis, or Codes & Methods
- Hands on experience with engineering analysis and model development
- Proficiency in data analysis and scripting (e.g., Python/Matlab) and version control (e.g., Git)
- Background with fuel performance, core thermal hydraulics, or safety analysis for light water reactors or comparable technologies
- Experience preparing inputs for licensing or interacting with customer/regulatory stakeholders
- Familiarity with common industry codes and solvers (examples may include fuel performance, TH system, sub channel, neutronics, or Monte Carlo tools), and with QA governed engineering processes
- Knowledge of materials behavior (e.g., fuel, cladding, structural materials) under irradiation and thermal mechanical loads
- Strong communication and collaboration skills in a multi-disciplinary, remote environment