Nuclear Energy: Principles of Power Plants and Reactors

Trace the nuclear fuel cycle from mining to disposal. Learn how uranium is mined, converted, enriched, and made into fuel pellets and bundles for calandria reactors.

Cool spent fuel in water-filled bays near reactors, transfer to dry storage containers for on-site processing, and store in a deep rock formation overseen by the Nuclear Waste Management Organization.

Compare reactor designs from PWRs and BWRs to Candu heavy-water units and other designs, and see how a nuclear plant boils water to drive a steam turbine and generator.

Explore conventional and radiological hazards at nuclear power plants, define hazards, and distinguish chronic versus acute risks while highlighting water treatment chemicals, nitrogen blanketing, heat, noise, and personal protective equipment.

Explore how uranium isotopes differ in neutron number and mass, including the band of stability, and how unstable radionuclides decay via alpha, beta, and gamma emissions to reach stability.

Explore ionizing radiation, including alpha particles, beta particles, gamma rays, and neutrons, and how their energy, penetration, and shielding—from paper to lead and concrete—protect health.

Classify ionizing radiation into direct ionizing, indirect ionizing, and minimal categories, detailing alpha, beta, gamma interactions and neutron roles. Visualize these concepts with a cloud chamber showing radon alpha tracks.

Explains how ionizing radiation damages DNA, outlining outcomes—no repair, deterministic cell damage or death, and stochastic cancer risk—along with units such as becquerels, curies, gray, and sieverts.

Master safety culture and defense in depth as the foundation of nuclear safety. Explore barriers, reliability, and operating procedures that protect workers, the public, and the environment from radiological hazards.

Defense in depth and safety culture guide nuclear safety across the plant. Management ensures safety messaging and oversight, while design basis accidents and anticipated operational occurrence shape operations.

Explore the defense in depth framework guiding nuclear safety, from normal operation to design basis and beyond design basis, emphasizing the three C's: cooling, containment, and control.

Explore defense in depth in reactor safety by examining five passive barriers—ceramic fuel, fuel sheath, heat transport, containment, and exclusion zone—and the need for reliable safety systems and competent staff.

Explore defense in depth by ensuring reliable process systems that maintain the three c's, and independent, automatic safety systems—emergency core cooling system and containment—to safeguard reactor integrity.

Explore how redundancy enhances reactor safety by using parallel pumps, backup valves, and redundant instrumentation, while examining common cause failures, design defects, and aging effects.

Define nuclides and isotopes, explain atomic number and mass number, and summarize radionuclides, radioactive decay, activity, and half-life with uranium isotopes and cobalt-60 as examples.

Neutron-induced fission of large nuclei like U-235 releases energy and neutrons, enabling a chain reaction. Reactors control heat with moderators, producing steam for electricity while fission fragments remain radioactive.

Explore decay heat after shutdown and how fast and thermal neutrons influence fission in uranium, highlighting the need to slow neutrons to thermal energies for optimal U-235 fission.

Explore how moderators slow fast neutrons to thermal energies using hydrogenous materials like water, and how keff, reactivity rho, and geometry determine subcritical, critical, and supercritical reactor states.

Understand how a reactor sustains a chain reaction with a target 1.0 multiplication factor. Control power via neutron absorbers, water types, and liquid poisons to manage irradiation and material effects.