Senior Criticality Safety Engineer — HALEU/TRISO Fuel

Nano Nuclear Energy, Inc.; Oak Ridge (TN); Hybrid; USD 145.000 - 180.000; Vollzeit

Benefits dieser Stelle

Hybrid work

Relocation assistance

Medical insurance

Dental insurance

401(k) match

Unlimited PTO

Zusammenfassung

NANO Nuclear Energy, Inc. in Oak Ridge, TN is seeking a senior criticality safety engineer to Own the criticality safety basis for the KRONOS MMR fuel lifecycle.

You will establish and defend safety basis across fresh and irradiated fuel handling, transportation, storage, and qualification activities. This role involves cross-functional collaboration with fuel design, performance, transportation, and QA teams to ensure configurations remain inherently safe and compliant with NRC requirements,

Qualifikationen

• Degree in Nuclear Engineering, Physics, or a related highly technical discipline.
• 5+ years of nuclear criticality safety experience, including authorship and independent defense of evaluations involving fissile-material processing, laboratories, storage, or transportation.
• Proficiency with industry-standard criticality safety codes such as MCNP and SCALE/KENO.
• Demonstrated experience establishing code validation, benchmark applicability, calculational bias and uncertainty, and subcritical margins using recognized critical experiments and sensitivity/similarity methods.
• Working knowledge of applicable ANSI/ANS-8 standards, double-contingency principles, criticality alarm and emergency-planning interfaces, and engineered and administrative controls.

Aufgaben

• Execute criticality safety analyses for fresh and irradiated fuel movement, including reactor-site transportation and inter-facility transfers.
• Define and validate geometric and moderation constraints for fresh-fuel and spent-fuel storage configurations.
• Model credible accident scenarios, including inadvertent moderation and geometric reconfiguration during handling events.
• Establish preventive and mitigative controls that maintain required subcritical margins.
• Partner with fuel design, fuel performance, and transportation teams to ensure handling equipment and transport casks maintain inherently safe configurations.
• Develop configuration-controlled criticality evaluations, validation reports, calculation packages, and operational limits in accordance with ASME NQA-1 and NRC requirements.
• Define and approve the criticality safety basis for HALEU-bearing qualification materials, fuel lots, test specimens, fabrication activities, packaging, shipments, irradiation support, PIE handling, and waste or residue disposition.

Kenntnisse

Criticality safety

Nuclear engineering

Code validation & benchmark

Regulatory compliance

Ausbildung

Bachelor's degree in Nuclear Engineering or Physics

Tools

MCNP

SCALE/KENO

Jobbeschreibung

NANO Nuclear Energy, Inc. in Oak Ridge, TN is seeking a senior criticality safety engineer to Own the criticality safety basis for the KRONOS MMR fuel lifecycle.

You will establish and defend safety basis across fresh and irradiated fuel handling, transportation, storage, and qualification activities. This role involves cross-functional collaboration with fuel design, performance, transportation, and QA teams to ensure configurations remain inherently safe and compliant with NRC requirements,