Marine SMR Thermal-Hydraulics Engineer

Bluecore Energy HQ; Long Beach (CA); On-site; USD 140,000 - 210,000; Full time

Job summary

BlueCore Energy in Long Beach, CA, is developing floating pressurized-water reactors and seeks a Thermal-Hydraulics Engineer to model and size reactor cooling systems in a hands-on startup environment.

You will contribute to safety analyses, DNBR evaluations, and cross-functional collaboration with engineering teams. Advanced degrees and experience with RELAP5-3D, VIPRE, and ASME NB are valued. On-site work near the harbor supports real-world impact.

Qualifications

• MS or PhD in Nuclear or Mechanical Engineering
• Experience with system thermal-hydraulics codes (RELAP5-3D, TRACE, ATHLET).
• Experience with subchannel codes (VIPRE-01, COBRA-TF/CTF) for MDNBR and hot-channel evaluation.
• Knowledge of ASME Boiler & Pressure Vessel Code NB (Section III).
• Ability to size steam generators and heat exchangers from heat balances.
• Experience sizing reactor pressure vessel walls using membrane hoop thickness formulas.

Responsibilities

• Own system thermal-hydraulics modeling (nodalization, LOCA, natural circulation) and DNBR/hot-channel analysis.
• Perform mechanical sizing for RPV, steam generator, pressurizer, and reactor coolant pumps.
• Establish primary/secondary/tertiary heat balances and flows, including seawater heat rejection support.
• Author transient/accident TH evaluations and coordinate with the safety case.
• Set minimum-DNBR using SAFDL and validate CHF correlation basis.
• Manage fatigue and fracture margins in mechanical component design.
• Coordinate neutronics-thermal hydraulics feedback with Core Physics team.

Skills

Thermal-hydraulics modeling

DNBR analysis

Subchannel analysis

Reactor pressure vessel sizing

Steam generator sizing

Heat exchanger sizing

Code familiarity (ASME NB)

Coupled neutronics-thermal hydraulics

Education

MS or PhD in Nuclear or Mechanical Engineering

Tools

RELAP5-3D

TRACE

ATHLET

VIPRE-01

COBRA-TF/CTF

ANSYS

ABAQUS

Job description

BlueCore Energy in Long Beach, CA, is developing floating pressurized-water reactors and seeks a Thermal-Hydraulics Engineer to model and size reactor cooling systems in a hands-on startup environment.

You will contribute to safety analyses, DNBR evaluations, and cross-functional collaboration with engineering teams. Advanced degrees and experience with RELAP5-3D, VIPRE, and ASME NB are valued. On-site work near the harbor supports real-world impact.