Master’s in Fission Reactor Engineering
Online master's programme of 1,900 hours in fission reactor engineering, structured in 12 modules covering neutronics, diffusion theory and criticality, cell and fuel assembly physics, core design, core thermal-hydraulics, light water, Generation IV and small modular reactors, shielding, design safety and integrated simulation, with an assigned technical tutor.
Take the controls.
Run a real engineering trade-off from this field. Move the sliders, watch the model react in real time and beat the challenge.
What you will be able to do
Master the fundamentals of neutronics and neutron transport.
Calculate core criticality and power distribution.
Design loading patterns and fuel management strategies.
Assess the thermal-hydraulic behaviour of the core and its margins.
Compare light water, Generation IV and SMR technologies.
Apply deterministic and Monte Carlo calculation codes.
Analyse reactivity accidents and their regulatory acceptability.
Who it's for
- Core design engineers looking to broaden their command of reactor physics.
- Reactor physicists working on neutronic calculations.
- Fuel management engineers responsible for reload design.
- Core safety analysts assessing design margins and accidents.
- SMR development engineers working on new reactor concepts.
- Researchers in advanced reactors.
- Engineering or science graduates seeking to enter nuclear engineering firms.
What you'll work with
- IAEA SSR-2/1 Safety of Nuclear Power Plants: Design (IAEA design safety requirements)
- 10 CFR 50.46 (acceptance criteria for emergency core cooling systems)
- IAEA SSG-52 Design of the Reactor Core for Nuclear Power Plants (IAEA guide on reactor core design)
- 10 CFR Part 50 Appendix A General Design Criteria (US general design criteria for nuclear power plants)
- NUREG-0800 Standard Review Plan (US NRC review plan for safety analysis reports)
- ANSI/ANS-19.6.1 (reload start-up physics tests for PWRs)
- ASME BPVC Section III (construction rules for nuclear facility components)
- OpenMC
- SERPENT
- MCNP
- CASMO/SIMULATE
- PARCS
12 modules · 1900 h
1.1Interaction of neutrons with matter1.2Cross-sections and resonances1.3Slowing-down law and lethargy1.4Flux, current and reaction rate1.5ENDF and JEFF nuclear data libraries1.6Neutron spectrum in thermal and fast reactors1.7Decay chains and fission products1.8Delayed neutrons and effective fraction1.9The Boltzmann transport equation1.10Workshop: cross-section calculation with evaluated libraries
2.1Diffusion approximation and boundary conditions2.2Bare reactor: slab, cylindrical and spherical geometries2.3Reflector and reflector savings2.4Two-group energy theory2.5Material and geometric buckling2.6Power distribution and peaking factors2.7Nodal methods for core calculation2.8Homogenisation and group constants2.9Monte Carlo criticality calculation2.10Practical exercise: two-group criticality of a cylindrical reactor
3.1Unit cell and heterogeneity3.2Resonance self-shielding3.3Thermal disadvantage factor3.4Cell codes: WIMS, DRAGON and CASMO3.5Burnable poisons: gadolinium and integral boron3.6Isotopic evolution and burnup3.7Plutonium production in uranium fuel3.8MOX fuel and its particular features3.9Reactivity parameters versus burnup3.10Laboratory: cell calculation with burnup
4.1Core design objectives4.2Loading patterns and fuel management4.3Low neutron leakage strategies4.4Linear power density limits4.5Shutdown margin and excess reactivity4.6Design of control rod banks4.7Cycle length and enrichment4.8Core monitoring with in-core instrumentation4.9Reload analysis with SIMULATE4.10Workshop: loading pattern for an 18-month cycle
5.1Heat generation in the fuel rod5.2Conduction in pellet, gap and cladding5.3Forced convection and heat transfer correlations5.4Nucleate boiling and two-phase flow5.5Critical heat flux and DNBR5.6Subchannel analysis with COBRA5.7Pressure drops and flow distribution5.8Natural circulation in the core5.9Coupling between neutronics and thermal-hydraulics5.10Practical exercise: DNBR calculation in the hot channel
6.1PWR design: core, primary circuit and containment6.2BWR design: recirculation and steam separators6.3VVER design and particular features of hexagonal fuel6.4Evolutionary designs: EPR, AP1000 and ESBWR6.5Passive systems in advanced designs6.6Flow-based power control in BWRs6.7Thermal-hydraulic stability in BWRs6.8Coolant chemistry in LWRs6.9Comparison of design parameters6.10Case study: PWR versus BWR at equal power
7.1Sodium-cooled fast reactors7.2Lead-cooled fast reactors7.3Very high temperature reactors7.4Molten salt reactors7.5Supercritical water reactors7.6Gas-cooled fast reactors7.7The thorium cycle7.8Generation IV International Forum roadmap7.9Materials and licensing challenges7.10Case study: assessment of a Generation IV concept
8.1The SMR concept and modular economies of scale8.2Integral designs: NuScale and SMR-1608.3BWRX-300 and Rolls-Royce SMR designs8.4Microreactors for remote sites8.5Modular manufacturing and transport8.6Passive safety systems in SMRs8.7Non-electric applications: industrial heat and hydrogen8.8SMR licensing strategies8.9Reduced emergency planning zones8.10Workshop: conceptual sizing of an integral SMR
9.1Radiation sources in the core9.2Neutron and gamma attenuation9.3Build-up factors9.4Shielding materials9.5Activation of structural components9.6Neutron fluence on the vessel9.7Calculation with MCNP and deterministic methods9.8Biological shielding of the reactor building9.9Gamma heating in structures9.10Practical exercise: calculation of fluence on the vessel
10.1Fuel acceptance criteria10.2Rod ejection accident10.3Boron dilution accident10.4Reactivity from cold water insertion10.5LOCA analysis and 10 CFR 50.46 criteria10.6Uncertainties and BEPU methodology10.7Analysis of severe accidents in the core10.8Core catcher and in-vessel retention10.9Regulatory design review10.10Case study: analysis of a reactivity insertion accident
11.1Cell-core-system calculation chain11.2Code verification and validation11.3OECD/NEA benchmarks11.4Uncertainty quantification11.5Coupled calculation with PARCS and RELAP511.6High-fidelity Monte Carlo methods11.7Quality assurance of nuclear software11.8Documentation of design calculations11.9Core digital twins11.10Laboratory: PWR core benchmark with OpenMC
12.1Definition of the reactor concept to be studied12.2Design requirements and criteria12.3Neutronic model of the core12.4Coupled thermal-hydraulic model12.5Assessment of safety margins12.6Sensitivity analysis12.7Comparison with reference designs12.8Conclusions and proposals12.9Master's Thesis report12.10Master's Thesis: defence before a panel
How you'll learn
The programme is 100% online on the SEIUM campus, with downloadable material, recorded classes and an assigned technical tutor. There are no fixed timetables: you progress at your own pace within each intake, so you can combine it with your job.
Each module combines theory, guided reading of the original standard and applied exercises. The working software is OpenMC, SERPENT, MCNP, CASMO/SIMULATE and PARCS, in free, academic or evaluation versions. Practical work is based on real procedures: neutronic calculation of a reference core, analysis of international benchmarks and conceptual design of a modular reactor. Assessment is continuous for each module, plus the final Master's Thesis.
Standards covered: IAEA SSR-2/1 Safety of Nuclear Power Plants: Design, 10 CFR 50.46, IAEA SSG-52 Design of the Reactor Core for Nuclear Power Plants, 10 CFR Part 50 Appendix A General Design Criteria, NUREG-0800 Standard Review Plan, ANSI/ANS-19.6.1, ASME BPVC Section III.
Build it end to end
Your final project follows the real engineering workflow, step by step, reviewed by your tutor.
Where this takes you
Requirements
- University degree in engineering, science or architecture, or equivalent demonstrable professional experience.
- Internet connection and a computer capable of running the programme's software.
- English sufficient to read technical standards.
Ready to start?
Send your application today. Our admissions team replies within 72 hours with your study plan and funding options.
Frequently asked questions
The programme totals 1,900 hours over 12–14 months. You set your own pace within each intake, and your tutor helps you plan the workload around your job.
You work with OpenMC, SERPENT, MCNP, CASMO/SIMULATE and PARCS, using free, academic or evaluation versions. Your tutor indicates the free alternative wherever one exists.
A SEIUM Institute diploma, awarded on passing the continuous assessment and the Master's Thesis. It is SEIUM's own qualification, not an official state degree; its recognition depends on the programme completed and the regulations of each country.
Yes. Modules passed in a course or postgraduate diploma in the same area are recognised in the higher programme. Ask about the recognition policy when you enrol.
A university degree in engineering, science or architecture (or equivalent professional experience), a computer able to run the software, and English sufficient to read technical standards.
Start dates are set by SEIUM's faculty for each intake. Our admissions team will confirm the next available date when you apply.
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