The fuel rods contain the fissile material that undergoes nuclear fission, releasing radiation.

The control rods absorb neutrons, which slows down the fission reaction and prevents the reactor from becoming too hot.

PWRs are the most common type of nuclear reactor in use today, accounting for about two-thirds of the world's nuclear power plants.

The primary purpose of a nuclear reactor is to generate electricity by converting the heat produced by nuclear fission into steam, which drives a turbine.

Spent fuel rods are the most common type of nuclear waste produced by nuclear reactors. They contain a mixture of radioactive isotopes, including uranium, plutonium, and fission products.

Deep geological disposal is the primary method for disposing of spent fuel rods in the United States. This involves burying the spent fuel rods deep underground in a stable geological formation.

The potential for accidents is the most significant environmental impact of nuclear reactors. A major nuclear accident can release large amounts of radiation into the environment, causing widespread contamination and health problems.

The Chernobyl disaster was the most famous nuclear accident in history. It occurred in 1986 at the Chernobyl Nuclear Power Plant in Ukraine, then part of the Soviet Union. The accident resulted in the release of large amounts of radiation into the environment, causing widespread contamination and health problems.

Nuclear reactors have multiple layers of safety features to prevent and mitigate accidents. These features include multiple layers of containment, emergency core cooling systems, and control rods.

The NRC is responsible for regulating the construction and operation of nuclear power plants in the United States. The NRC also conducts research on nuclear energy and promotes the development of nuclear energy.

Nuclear energy is expected to continue to be a major source of electricity in the future. However, the growth of nuclear energy is likely to be slow due to concerns about safety, waste disposal, and the potential for accidents.

Nuclear energy has several advantages over other forms of energy. It is a reliable source of energy, as it is not affected by weather conditions. It is also a clean source of energy, as it does not produce greenhouse gases. Additionally, nuclear energy is a cost-effective source of energy.

Nuclear energy has several disadvantages. It is a dangerous technology, as it has the potential for accidents. It also produces radioactive waste, which is difficult to dispose of. Additionally, it is expensive to build and operate nuclear power plants.

Nuclear energy can play a role in the fight against climate change. It can help to reduce greenhouse gas emissions, increase energy efficiency, and promote sustainable development.