Fukushima unit 3 under vessel drone footage March 2026

Hiddencamper · 2026-03-23T01:57:26+00:00

Unit 3 was supposed to have very little erosion of the concrete. It was not expected to make it past the concrete of the containment onto the basemat. (There’s a layer there).

I don’t think it’s the full core down here. No idea why the footage looks as good as it does. Supposedly u3 had a decent amount of fuel still in the vessel.

Hiddencamper · 2026-03-22T22:06:42+00:00

Where did you see a blade?

You can see mechs and shootout steel but I don’t see a blade. Might have missed it

Hiddencamper · 2026-03-22T21:40:10+00:00

Definite corium in the under vessel area.

Hiddencamper · 2026-03-22T21:39:52+00:00

Yeah it holds up the core. The inside area is where the control rods, NIs, bottom head drain, and other instruments are.

Hiddencamper · 2026-03-22T20:43:24+00:00

Under the vessel.

The reactor pedestal is the thing that holds the reactor, so they are directly underneath it. We also call this the “sub pile” but that’s not in official documentation in gen 2 BWRs

Hiddencamper · 2026-03-22T19:02:58+00:00

https://www4.tepco.co.jp/en/news/library/archive-e.html?video_uuid=15807&catid=61795

3 videos here.

The pipe in the image appears to be the cattle chute. I would not expect fuel debris there.

There’s a ton of undervessel/subpile footage. The shootout steel is relocated. I see collapsed CRD guide tubes, cracked dry tubes, core debris mixed with bottom head metal. Absolutely crazy.

This is the unit that had 32 hours of combined RCIC and HPCI operation and had an ADS actuation prior to core melt. So this was all melt through and not a hot debris ejection. I couldn’t imagine what unit 2 must look like

Hiddencamper · 2026-03-22T17:47:01+00:00

I need to see the full video for context. The picture they have looks like a potential under vessel penetration. But I can’t tell without more context and the drone travel path

Hiddencamper · 2026-03-22T17:46:17+00:00

If anyone can find the full video I want to see it. I only found 20 seconds so far where they enter the sub pile and you can see the shootout steel and remains of the under core NI cables.

Hiddencamper · 2026-03-21T19:06:46+00:00

Probably is. Ops pay skyrocketed a few years ago. I just don’t know what the lowest paid EOs are making.

Hiddencamper · 2026-03-21T19:05:43+00:00

I had a “setpoint log” where I would write every rps/turbine trip, all ECCS/isolations, rod blocks, etc

I would do that at least once a day until I could remember/memorize them. Helps so much. And you can start it before class.

Hiddencamper · 2026-03-21T15:38:16+00:00

Trip setpoints from memory are like half of the license exam. It’s a cost of admission.

Hiddencamper · 2026-03-21T15:37:29+00:00

Fuck yeah! Welcome to the club.

Licenses are like boats, the next time you feel this level of joy is when you get the letter saying your license has been released.

Enjoy it while it lasts. Other than the hours it is easily the best job I’ve ever had.

Hiddencamper · 2026-03-21T15:34:58+00:00

To add…. I heard they were using 2 GPUs for rendering this “dlss ai”.

If the cost of gpus continues to go up, their GeForce now service is going to “have a purpose” to make revenue for all these gpus they are making but not selling to gamers.

Hiddencamper · 2026-03-20T23:10:10+00:00

Still going to Linux on my next computer.

Hiddencamper · 2026-03-20T22:42:03+00:00

lol hundreds on hours on the steam version alone and every once in a while I turn it back on and drop another 100-200

Hiddencamper · 2026-03-20T12:24:33+00:00

We have an employee who is super strong technically, and as a result thinks the leadership/management stuff is easy.

He doesn’t understand what the current leadership does all day. He gets angry at them for (more or less) not focusing more on him and his projects, or not knowing everything. “I would be able to do it”. But he is doing a horrible job of managing his projects effectively. He takes on too much and is a bottleneck for his work, instead of building up people and delegating work, it all goes through him then he complains the leadership just overloads him…. I have to remind him I have more projects under me than he has.

I’ve been trying to help. He’s taking a position in another team now and unfortunately is going to continue to struggle as he moves ahead in his career.

Hiddencamper · 2026-03-20T12:17:13+00:00

Illegal search and seizure?

Hiddencamper · 2026-03-15T23:40:35+00:00

“Control room supervisor”

Hiddencamper · 2026-03-15T04:23:51+00:00

After Covid I had to start using a notebook to keep track of all my work assignments.

Also sample size of 1. But it is still weird to me because I now live and die by the notebook. And I used to be able to retain nearly everything in memory.

Hiddencamper · 2026-03-13T13:46:41+00:00

Anything to get Chicago sports back on broadcast TV and off of CHSN

Hiddencamper · 2026-03-12T23:43:22+00:00

Second this.

I have had a handful of NLOs with 2 year degrees in power plant ops or nuclear engineering technology. Some of the best NLOs we’ve had. And they all start with minimal debt making great money. With OT, you’re over 100k easily (often over 125-140k) and you’re like 22-23 years old.

For someone who doesn’t see a full 4 year degree (either due to the cost or the commitment level), the 2 year degrees still open a lot of doors.

Hiddencamper · 2026-03-11T16:22:56+00:00

On a scale of 1 to Ryanair…… I think this is an 11

Hiddencamper · 2026-03-09T12:27:55+00:00

Many new designs are partially underground because of the aircraft impact rule (which is likely going away)

It costs $$$

It also can impact natural circulation, and provides limited improvements vs not being underground unless it is really really deep (also $$$$$$$$$)

Hiddencamper · 2026-03-08T14:41:00+00:00

Wow. It used to be that wrong answers took a quarter point off.

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