Understanding the accident of Fukushima Daiichi

This is the first time I've totally understood exactly what happened- 8 years after the fact. Thank you, IRSN

The best part of this story is that all of the older people in Japan stepped up to work on cleanup so the younger people would not have to suffer . Cancer from radiation poisoning takes many years to kill you and they figured they were already old so why not save the young from this fate . Faith in humanity still stands tall !

You are dealing with something that has already occured on this planet before

Always make a backup of your backups of your backups of your backups of your backups.......

8:08 The building is actually designed that way, so that if there's a hydrogen explosion in the superstructure, the walls of the structure actually give way and are blown apart, and thus the explosion doesn't get to damage the containment below. The design did its job as it was supposed to.

It seems to me that in a country prone to earthquakes and the resulting tsunamis, it might've been prudent to elevate the diesel generators off the ground so that they couldn't flood.

Great video. All the necessary details and easy to understand. I would like news reports to be like this, not the very superficial coverage that is usually available to the public.

This is the clearest explanation of reactor operations and the Fukushima accident that I've ever seen on YouTube or the internet. I used to work at a BWR with exactly the same type of containment and ECCS, so I was interested in the slow, progressive failure of the various pieces of the ECCS, containment, etc. I especially appreciated the calm, detailed explanations. In my years of working at the BWR plant, I never, ever heard an accurate news report on events at the plant. The IRSN deserves praise for presenting the facts of the accident and its aftermath. A useful improvement on this video would be a report on radiation exposure for the various teams. Cycling 20,000 people through the wrecked plant sure sounds like many people reached their occupational exposure limit. Occupational exposure limits have changed since I first trained as a Navy Nuc and are much lower than they used to be.

I wish Japan had at the ready the nuclear power expertise available from this comment section.

Massive respect to the guys at Fukushima for their work. Not so much for the upper management though.

This is what happens when you let TEPCO run nuclear power plants. They knew that the seawall at the Fukushima Daiichi nuclear power plant wasn't high enough, yet they still did stupid things like put the emergency generators in the basement of all places. The Onagawa nuclear power plant which was closer to the epicenter survived perfectly intact thanks to its 14 meter seawall.

They just started removing nuclear fuels 04-15-2019 and it is expected to take 2 years. The one from reactor 3 will be the hardest and they won’t start that until 2021 reports say

The world's most dangerous giant kettle

And some say being a mother is the hardest job

It is a rarity that someone(/s) of incredible intelligence can explain an intricate concept in a manner so easily understood - even by someone as blunt as I am! Thank you.

TL:DW: Whoever decided that building the backup generators on ground level, with no protective walls, on the coast, of a country prone to earthquakes and tsunamis, is directly and solely responsible for the entire meltdown and everything that resulted from it. End of story.

The cleanup workers were heroic. They paid the price for management incompetence.

This is the best video I've seen on this disaster, and by far.

This was a very good overview of the disaster. There were a few places where I wish the narrator went into a bit more detail, but overall it was a very interesting and informative watch.

This is the only video which does really explain all the open questions that I had. Thank you.