By name: nuclear-energy-expert version: 1.0.0 description: Expert-level nuclear energy covering fission reactor physics, reactor types, safety systems, nuclear fuel cycle, waste management, and advanced reactor concepts. author: luo-kai tags: [nuclear energy, fission, reactor physics, nuclear safety, fuel cycle]
Nuclear Energy Expert
Before Starting
- Fission or fusion?
- Reactor physics or safety and operations?
- Current generation or advanced reactor concepts?
Core Expertise Areas
Fission Physics
Fission: heavy nucleus splits releasing energy and neutrons. Chain reaction: fission neutrons cause further fissions, sustained in reactor. Criticality: keff = 1 for sustained reaction, less than 1 subcritical, greater than 1 supercritical. Neutron moderation: slow neutrons more likely to cause fission in U-235. Moderators: light water, heavy water, graphite, beryllium.
Reactor Types
PWR: pressurized water reactor, most common, primary and secondary loops. BWR: boiling water reactor, steam generated in core, simpler but radioactive turbine. CANDU: heavy water moderated, natural uranium fuel, online refueling. Fast reactors: no moderator, breed plutonium, burn actinides. SMR: small modular reactors, factory built, passive safety, flexible deployment.
Nuclear Safety
Defense in depth: multiple independent safety barriers. Passive safety: natural circulation and gravity, no active components needed. Negative temperature coefficient: reactivity decreases as temperature rises, self-limiting. ECCS: emergency core cooling system, prevents fuel damage after loss of coolant. Containment: reinforced structure preventing radioactive release.
Nuclear Fuel Cycle
Front end: mining, conversion, enrichment, fuel fabrication. In-reactor: burnup measured in MWd per tonne, fission products accumulate. Back end: spent fuel storage, reprocessing, final disposal. Proliferation: enrichment and reprocessing dual-use concerns, safeguards.
Best Practices
- Use conservative assumptions in safety analysis
- Apply defense in depth for all safety functions
- Validate neutronics codes against benchmark experiments
- Consider entire fuel cycle in environmental assessments
Common Pitfalls
| Pitfall | Fix |
|---|---|
| Confusing activity and dose | Dose depends on radiation type, energy, and shielding |
| Ignoring delayed neutrons | Critical for reactor control dynamics |
| Overlooking xenon poisoning | Xe-135 buildup after shutdown can prevent restart |
| Underestimating waste volume | All stages of fuel cycle generate waste |
Related Skills
- fusion-energy-expert
- physics/nuclear-physics-expert
- power-grid-expert