Geoff Brumfiel Profile picture
Mar 11, 2022 14 tweets 7 min read Read on X
NEW ANALYSIS: We looked carefully at security footage and photos from last week's Russian assault on the Zaporizhzhia Nuclear Plant and found evidence that it was far riskier than first reported. Here's what we turned up:

npr.org/2022/03/11/108…
Around midnight local time, Russian forces began a slow and methodical advance on the plant. The column of armored vehicles, led by two tanks, approached the plant from the southeast along the main service road.

Ukrainian forces opened fire and one tank was hit.
Russian forces immediately returned fire, and at least one power line was struck. The @iaeaorg has now said that 2 of the plant’s 4 transmission lines were damaged in the attack (though we don’t know for sure if this was one of them).
The armor column then pushed its way into the parking lot in front of the plant. As previously reported, there was a great deal of fire towards the plant's training center (on the far right). But we also found several instances of fire directly INTO the nuclear complex.
It's not clear whether the Russian troops were deliberately trying to strike more sensitive sections of the plant or whether they were returning fire from defenders. But what is clear is that the shooting was not accidental.

"The fire is very concentrated," says @leone_hadavi.
Towards the end of the firefight, though, the Russian forces appeared less disciplined. On 5 separate occasions, soldiers could be observed firing RPGs into the main administrative building at the plant.

They did not appear to be under fire. It seemed pretty haphazard.
Finally, as things died down, Ukrainian firefighters arrived, probably from the nearby town of Enerhodar. But despite a raging fire in the training center (which, by the way, is in front of the plant’s main electrical switch yard), Russian forces turned them back.
That's slightly different from the official narrative that firefighters arrived and immediately extinguished the blaze. It seems more likely they came back a few hours later in the morning (Source: Energatom Telegram).
There are a few other photos and videos of the aftermath. One, on an elevated walkway I’ve tweeted about before (see below). What I hadn’t realized is immediately NEXT to that walkway is a part of the plant that handles radioactive waste.
That building is not as hard as the reactor buildings, and if it had been struck, it could have caused a local radiological incident (in the middle of a fire fight). “The situation that we saw here could have gone wrong. Much more wrong than it did,” @TomBielefeld told me.
Photos of the admin building (where the Russian troops lobbed their RPGs) also show heavy damage. We've been able to verify both the location and that these images came post-assault. (Source: Energatom Telegram)
Put it all together and we were able to find evidence for damage at 7 different points around the reactor complex.

Some of it was reported by Ukrainian regulators, we didn't see directly. But we did see fire in the direction of where the damage was reported.
I should also add that this was a serious team effort. Thanks to @mererizzo @alykat and @tienlle who provided the visual journalistic chops we needed to pull this off. And to @leone_hadavi and @Cen4infoRes for checking what we saw and finding some important nuggets!
Plus the incredible @aminawrite and @nprnishant, who are some of the best editors you could ever ask for.

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More from @gbrumfiel

Jun 26
Iran's nuclear facilities have been destroyed, but many experts think that its been able to hold on to some of its enriched uranium.

Here's why that 400+ kilograms of highly enriched uranium is REALLY important….

A brief 🧵 (WITH POORLY MADE GRAPHICS!) Image
I’d actually been meaning to do this thread anyway, because there’s been a lot of confusion about uranium enrichment, and I thought it’d be helpful. But in the current context of this ceasefire it seems especially important.

So let’s start with how enrichment works....
Every uranium atom has the same number of protons at the center, but different atoms can have different numbers of neutrons. The number of neutrons determines a number of properties, including for uranium, how easily it splits apart.

Natural uranium is mostly uranium-238.... Image
Read 13 tweets
Jun 25
OK, after reporting this out, I've got a few final thoughts on the B-2 strike on Fordo and whether the MOPs got through.

I think there's some really interesting details that have emerged and clarified my thinking... 🧵

npr.org/2025/06/25/nx-…
First, a question I must ask myself (and that you should ask too) is have I become "man on the Internet" who thinks he knows more than the Pentagon....

I am somewhat fearful that doing my own math makes it look like I do, but I assure you I do not.

The Pentagon knows way more than I do. About the rock, about the bomb, about the right equations and the bunkers.
And from everything we can see, I think seems that they executed this strike flawlessly. The hits are clustered. The strike points chosen carefully. (@Maxar /NPR) Image
Read 11 tweets
Jun 18
If a U. S. 'bunker buster' hits a nuclear site, what might get released into the air?

Very good fact-checking here by my colleague Nell Greenfieldboyce. Iranian enrichment facilities will not "blow up" in a mushroom cloud when they're struck...

npr.org/2025/06/18/nx-…
Because the enriched U-235 is stored as a gas, its at far too low a density to start a criticality event. A bomb will simply disperse it around the local environment.
Also, unlike nuclear reactors, there are no lighter radioactive isotopes that can be dissolved in water vapor and transported over long distances (think Cs-137 and I-131).

Instead, the main contaminate will be Uranium Hexaflouride (UF6) a heavy gas that is quite toxic...
Read 4 tweets
Jun 17
ANALYSIS: There is a LOT of stuff in the media right now about the Massive Ordinance Penetrator--The American bunker buster that might get used on Iran's deeply buried site at Fordow.

Can it hit Fordow? I'm not sure.

Here's why (WITH MATH). 🧵
OK, so before we even start, a disclaimer-- I'm a journalist, not a weapons expert. But I have reported on a similar topic a long time ago.

More on that later, but first, let's talk about the MOP.

It's a 30,000 lb (13, 600 kg) bomb built by Boeing and designed to hit bunkers. Image
A lot of other outlets (particularly @thewarzonewire) have done great reporting on the MOP.

They surfaced this early DOD graphic showing that it could penetrate 60' (18 m). Image
Read 15 tweets
Sep 30, 2024
BREAKING: A tiny town in North Carolina that’s just been devastated by hurricane Helene could end up severely disrupting the global supply chain for microchips and solar panels.

(By myself, @camilareads and Scott Neuman)

Short 🧵

npr.org/2024/09/30/nx-…
The community in question is called Spruce Pine. It is America's sole source of high-purity quartz, and one of the only places that can supply high purity quartz to the world.

Or it was, until Hurricane Helene dropped a whopping 24.12 " of rain on it. Image
I spoke to Spencer Bost head of Downtown Spruce Pine. He says local businesses are destroyed.

There's now power, no water, or cell service.

"We were there for three days before we got enough chainsaws together to cut a path out of our neighborhood." (photo: S. Bost) Image
Read 13 tweets
Aug 9, 2024
The @iaeaorg is closely monitoring fighting between Ukrainian and Russian forces near Russia's Kursk NPP.

This has the potential to develop into a serious nuclear emergency.

Here's some early thoughts in a short 🧵
First, let's talk about the Kursk nuclear plant (KNPP hereafter).

The plant is located inside of Russia, about 100 km from the border with Ukraine. It consists of four units, two of which are currently operational (Units 3 and 4).
Image
Image
The operating reactors at Kursk are OLD. They began operation in the 1980s, and have had multiple license extensions.

They are graphite-moderated light water reactors. Graphite moderated reactors are no longer built anywhere in the world as far as I know, and for good reason... Image
Read 12 tweets

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