Thorium-based power key to securing energy independence, Pg17

Key Highlights:

• India's nuclear strategy is based on a three-stage program due to limited uranium and vast thorium reserves.
• PHWRs use uranium to produce plutonium in the first stage.
• The second stage uses plutonium in fast breeder reactors to prepare for thorium-based nuclear power.
• Scaling up PHWR capacity allows for faster transition to thorium-based nuclear power generation.
• Achieving 50-75 GWe PHWR capacity by 2047 requires significant financial resources and more public and private sector involvement.

Detailed Insights:

• Transitioning to thorium-based nuclear power is crucial for energy independence, requiring sufficient U233 through thorium irradiation.
• With international access to uranium, PHWR capacity is growing, enabling U233 production and faster transition to thorium-based power.
• Thorium-HALEU based fuel for PHWRs offers economic, safety, and security benefits while converting thorium to U233.
• Scaling up PHWR capacity to 50-75 GWe by 2047 requires adding 5-8 reactors annually, needing substantial financial resources.
• Imported Light Water Reactors (LWRs) can supplement energy needs if economically competitive and aligned with fuel cycle policies.
• PHWRs are more efficient in terms of mined uranium needed, and fueling cost with HALEU-thorium fuel in PHWR is lower than with natural uranium.

Key Concepts Involved:

• PHWR (Pressurized Heavy Water Reactor): A nuclear reactor that uses heavy water as its coolant and moderator.
• Fast Breeder Reactor: A nuclear reactor that breeds more fissile material than it consumes.
• HALEU (High-Assay Low-Enriched Uranium): Uranium enriched between 5% and 20% U-235.