Remote Sodium Fire Modeling Engineer

System One; Washington (District of Columbia); Remote; USD 77,000 - 131,000; Full time

Benefits offered by this job

Health benefits

401(k) plan

Equal Opportunity Employer

Job summary

System One is seeking a Sodium Fire Analysis Engineer to perform modeling calculations supporting the Natrium design and licensing. This remote, long-term contract role involves collaborating with nuclear safety staff to meet technical and regulatory requirements and to develop analytical methods for sodium chemistry, aerosol transport, and containment performance.

The ideal candidate will have an advanced nuclear engineering degree with 3+ years of experience, strong quantitative and modeling

Qualifications

• M.S. or Ph.D. in nuclear engineering or relevant engineering discipline with at least 3 years of nuclear experience.
• In-depth knowledge of sodium chemical reactions, thermal-hydraulics, reactor dynamics, and transient phenomena.
• Experience with sodium fire analysis using codes such as CONTAIN-LMR, MELCOR, SPCA-ANL, SOFIRE II, NACOM, or similar.
• Familiarity with functional containment approach and nuclear design, regulatory requirements, and risk-informed performance-based guidance for Non-Light Water Reactors.
• Knowledge of PRA principles and familiarity with ASME/ANS Non-Light Water PRA standards (a plus).
• Experience in SFR safety analysis preferred.
• Strong quantitative, analytical, modeling, and reporting skills.
• Understanding of NQA-1 requirements related to analysis and software management.
• Experience with multidisciplinary engineering teams.
• Software engineering skills are a plus.
• Demonstrates high integrity, effective communication, and teamwork.

Responsibilities

• Perform sodium fire modeling calculations to support the Natrium® design and licensing.
• Collaborate with nuclear safety analysis and licensing staff to meet technical and regulatory standards.
• Develop analytical models for sodium chemical reactions, aerosol generation, and transport.
• Conduct software quality assurance activities to qualify sodium fire modeling codes.
• Support the development of mechanistic source term methods for normal operations and postulated accidents.
• Develop analytical models for containment performance, including mass and energy release and leak rates.
• Support regulatory submittals and interactions with the NRC.
• Establish and support a containment strategy considering sodium fire impact.
• Work with interdisciplinary teams to establish safety, reliability, and performance standards for SSC.
• Document model development and analysis results.
• Perform engineering reviews and recommend safety-related design solutions.

Skills

Quantitative skills

Analytical skills

Modeling

Reporting skills

Multidisciplinary teamwork

Software engineering skills (nice to)

Communication

Integrity

Education

M.S. or Ph.D. in nuclear engineering or related field with 3+ years of nuclear experience

Tools

CONTAIN-LMR

MELCOR

SPCA-ANL

SOFIRE II

NACOM

Job description

System One is seeking a Sodium Fire Analysis Engineer to perform modeling calculations supporting the Natrium design and licensing. This remote, long-term contract role involves collaborating with nuclear safety staff to meet technical and regulatory requirements and to develop analytical methods for sodium chemistry, aerosol transport, and containment performance.

The ideal candidate will have an advanced nuclear engineering degree with 3+ years of experience, strong quantitative and modeling