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X-energy

Develops SMR reactors and TRISO fuel

Thermal Analysis Engineer

Thermal & Fluids EngineeringConfirmed live in the last 24 hours
Full-timeGaithersburg, MD, USA

About the Job

Requirements

  • A bachelor's degree in mechanical engineering or a related engineering discipline, such as nuclear, aerospace, or chemical engineering, from an accredited institution is required.
  • Level I requires typically zero years of experience in an engineering role.
  • Level II requires typically two years of experience in an engineering role.
  • Level III requires typically five years of experience in an engineering role.
  • Proficiency with engineering hand calculations is required.
  • Experience using 1D flow-solvers for heat/energy and mass balance, such as RELAP, Flownex, NPSS, SINDA/FLUINT, Flomaster, or similar, is required.

Responsibilities

  • Develop mechanical and physical concepts, and design and support development of processes to create or identify structures, systems, and components for nuclear products or facilities, with a focus on nuclear safety.
  • Identify, collect, and document applicable requirements, interfaces, design basis, and criteria by coordinating with key stakeholders and systems engineers; support identifying applicable industry codes and standards under the direction of project leads and systems engineers.
  • Plan and perform analyses to assess structures, systems, and components and ensure they can perform their intended functions and meet technical specifications and design requirements.
  • Perform hand calculations and analytical-tool computations for structural, thermal, hydraulic, and other scoping calculations as directed by project leads and systems engineers, to ensure components can meet technical requirements.
  • Support development of reactor and plant control philosophy and implement it in plant models, simulations, and digital twins.
  • Support sizing and analysis of components, including heat exchangers, pumps, circulators, and turbomachinery.
  • Perform system-level thermodynamic analyses and process design using system-level simulation codes to support design iterations of company-developed reactors and supporting subsystems.
  • Support assessment of structures, systems, and components for manufacturability, assembly, and integration considerations as directed by project leads.
  • Write and develop design documentation, including design basis documents, technical reports, calculations, and drawings, in accordance with applicable procedures.
  • Develop verification and validation plans for analytical tools and support qualification of the toolset.
  • Perform work in accordance with quality procedures for design and configuration management to ensure project quality requirements are met.
  • Provide independent reviews and acceptance reviews of engineering deliverables and data.
  • Perform other duties as assigned by the manager.

About the Company

X-energy

Develops SMR reactors and TRISO fuel

X-energy designs and develops Generation IV high-temperature gas-cooled pebble-bed reactors and the TRISO-X fuel for small modular reactors (SMRs). Its modular reactor units use TRISO fuel to operate at high temperatures, producing heat that powers electricity generation or process heat through conventional power cycles, with safety features built into the fuel and design. The company differentiates itself by combining a fully modular Gen IV gas-coooled platform with proprietary TRISO-X fuel and a clear path toward commercialization backed by substantial financing. Its goal is to deliver cleaner, safer nuclear energy at commercial scale by completing design, obtaining regulatory clearance, and deploying its SMR technology and fuel.

Company size
1,001-5,000
Company stage
IPO
Headquarters
Rockville, MD
Founded
2009

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