Chernobyl Episode 2 - Please Remain Calm - Nuclear Engineer Reacts

First off, wow. The response to part 1 was incredible. Thanks to everyone who made that possible!

Part 2! The disaster has happened and now the Soviet government is trying to figure out what happened. Secretary Gorbachev sends Minister Boris Shcherbina and a nuclear scientist of the Kurchatov Institute, Valeriy Legasov, to Chernobyl to investigate.

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References:
[1] "Advanced Test Reactor core, Idaho National Laboratory" (https://www.flickr.com/photos/3573427...) by Argonne National Laboratory (https://www.flickr.com/photos/argonne/) is licensed under CC BY 2.0 (https://creativecommons.org/licenses/...)
[2] Dose Rate Chart https://www.informationisbeautiful.ne...

Timestamps:
00:00 Intro
00:51 Corrections from Episode 1
05:13 Chernobyl Episode 2
05:17 Uranium Decay vs. Uranium Fission Products
05:58 Contaminated Firemen's Clothes
06:50 Beta Burns and Radiation Overview
08:28 I Don't Like the U-235 "Bullet" Analogy
11:54 Is Radiation Like a Virus?
13:43 "What Have They Done?"
14:32 Smoke Added for Dramatic Effect
15:32 What Is Lead Shielding?
17:25 How Much Lead Is Actually on that Truck?
18:06 Decontamination
19:01 "It's Not Three Roentgen..."
19:47 "Boron and sand"
21:16 Why Will the Fuel Melt?
23:44 Fuel Lava Bubbler Pool Thermal Explosion
24:54 Two to Four Megatons?
26:46 Pripyat: Frozen in Time
27:25 Bubbler Pool Divers / Dosimeters
28:39 Intense Radiation Fields and Electronics
29:29 Outro