Every Reactor Coolant System Explained: PWR, BWR, Molten Salt, Sodium & More

If you want to go deeper than this video and actually understand nuclear science, reactors, radiation, and nuclear technology, these are some of the best academic resources we recommend: Fundamentals of Nuclear Engineering: https://amzn.to/3Susgyw Radiation Detection and Measurement: https://amzn.to/4oonaQA ----- Reactor coolant systems explained — PWR, BWR, heavy water, molten salt, liquid sodium, helium gas, lead-bismuth, supercritical water, and more. Every major coolant type covered in one video. A nuclear reactor runs hot enough to glow metal red — and the only thing standing between controlled fission and catastrophe is the coolant system. In this video, FeynBox breaks down all 21 reactor coolant systems ever used or developed, from the pressurized water systems powering most of the world's reactors today, to exotic liquid metal and molten salt designs being built right now for next-generation plants. You'll learn why sodium catches fire in air, why heavy water unlocks natural uranium fuel, why supercritical water behaves like neither liquid nor gas, and why helium is trusted in the hottest reactors ever designed. Each system is explained visually — how the coolant moves, what it carries, and why engineers chose it. Types covered in this video: • Pressurized Water Coolant System • Boiling Water Coolant System • Heavy Water Coolant System • Pressure-Tube Coolant System • Supercritical Water Coolant System • Carbon Dioxide Gas Coolant System • Advanced Gas Coolant System • Helium Gas Coolant System • High-Temperature Gas Coolant System • Liquid Sodium Coolant System • Sodium-Potassium Coolant System • Lead Coolant System • Lead-Bismuth Coolant System • Molten Salt Coolant System • Fluoride Salt Coolant System • Chloride Salt Coolant System • Organic Liquid Coolant System • Liquid Metal Fast Reactor Coolant System • Natural Circulation Coolant System • Forced Circulation Coolant System #NuclearReactor #ReactorCoolant #NuclearEngineering #MoltenSalt #FeynBox Chapters 0:00 Introduction 0:56 Pressurized Water Coolant System 1:46 Boiling Water Coolant System 2:35 Heavy Water Coolant System 3:29 Pressure-Tube Coolant System 4:27 Supercritical Water Coolant System 5:22 Carbon Dioxide Gas Coolant System 6:15 Advanced Gas Coolant System 7:12 Helium Gas Coolant System 8:09 High-Temperature Gas Coolant System 9:05 Liquid Sodium Coolant System 10:03 Sodium-Potassium Coolant System 10:57 Lead Coolant System 11:52 Lead-Bismuth Coolant System 12:50 Molten Salt Coolant System 13:46 Fluoride Salt Coolant System 14:48 Chloride Salt Coolant System 15:47 Organic Liquid Coolant System 16:49 Liquid Metal Fast Reactor Coolant System 17:46 Natural Circulation Coolant System 18:46 Forced Circulation Coolant System