Which is the Advanced Gas-Cooled Reactor that uses CO2 as coolant?

Which is the Advanced Gas-Cooled Reactor that uses CO2 as coolant?

• A. Candu Reactor
• B. AGR Reactor
• C. Magnox Reactor
• D. Light Water Reactors

Answer: (B)

Gas-cooled reactors use a gas to carry heat away from the core, and the Advanced Gas-Cooled Reactor is the design that uses carbon dioxide as that coolant. The AGR was developed as a more advanced version of the earlier gas-cooled designs, featuring enriched fuel and a graphite moderator with CO2 circulated at high pressure to transfer heat efficiently to the steam system. The other options don’t fit: Candu uses heavy water for cooling, Magnox is an older gas-cooled design (also CO2-cooled) but not the advanced type, and Light Water Reactors use ordinary water as coolant. So, the Advanced Gas-Cooled Reactor that uses CO2 as coolant is the AGR.

Gas-cooled reactors use a gas to carry heat away from the core, and the Advanced Gas-Cooled Reactor is the design that uses carbon dioxide as that coolant. The AGR was developed as a more advanced version of the earlier gas-cooled designs, featuring enriched fuel and a graphite moderator with CO2 circulated at high pressure to transfer heat efficiently to the steam system. The other options don’t fit: Candu uses heavy water for cooling, Magnox is an older gas-cooled design (also CO2-cooled) but not the advanced type, and Light Water Reactors use ordinary water as coolant. So, the Advanced Gas-Cooled Reactor that uses CO2 as coolant is the AGR.