Nuclear Shielding and Criticality Engineer from System One

System One is seeking to contract with a highly capable and motivated nuclear shielding and criticality engineer. The primary software is MCNP 6.2, and strong MCNP skills are required. The successful candidate must be self-motivated and capable of working effectively in a remote environment. The class of problems include shielding, energy deposition, neutron fluence, activation, and criticality.  Strong written and oral communication skills are essential.  Experience working in an NQA-1 environment with rigorous quality standards is desirable.

Responsibilities:

• Perform radiation shielding design and analysis for advanced nuclear reactors, including calculating dose rates, activation rates, neutron fluence rates, and energy deposition rates.

• Develop radiation sources based on material activation analysis for non-fuel in-vessel components.

• Perform criticality calculations and develop upper subcritical limits (USLs)

• Establish and maintain formal documentation of analysis results.

Ideal Background

• B.S. degree in Nuclear Engineering or equivalent experience; Advanced degree and 5+ years of relevant experience with nuclear analysis preferred.  For less than 5 years’ experience, a college transcript is required.

• Strong MCNP skills and experience with performing radiation shielding calculations for both gammas and neutrons are required.  Experience in criticality safety desirable.

• Candidate should be familiar with variance reduction using MCNP, and features such as surface source read/write, mesh tallies, and weight windows.  Familiarity with ADVANTG for weight windows generation is a plus

• Excellent written and verbal and communication skills required. 

• Ability and professionalism to work within published regulatory guidelines required.

• Experience working under NQA-1 quality program desired

• Strong computational expertise desired.

• Experience with Attila /Attila4MC and computed aided drafting (e.g., SolidWorks, SpaceClaim/ANSYS, Cubit) is a plus.

• Fast reactor experience a plus.

• Strong programming skills in any language is a plus, and Python is commonly used in this position.

• Knowledgeable or highly motivated to quickly learn basic nuclear reactor design concepts to meaningfully support engineering team.

• Actual position starting level and title will be determined based on assessment of qualifications.