all hail the cherenkov radiation! IT'S SO BEAUTIFUL
@jmcooney2000 Жыл бұрын
Cool vid 👍
@yourbigfan1777 Жыл бұрын
1:26 is this wobbling done in order to make sure the bundle is completely out? 😂
@dannywilliamson3340 Жыл бұрын
Been there! I worked 7 outages as a fuel handler. It was better than a lot of other jobs that go on during outages.
@TheHeatExchang3 Жыл бұрын
Do fuel handlers work for the plants ? Or is their a specific task force so to speak that travels from plant to plant carrying out and handling ?
@dannywilliamson3340 Жыл бұрын
@@TheHeatExchang3 Both. GE brought in their team of drivers who were ususally "vessel techs" also. And there were 6-8 of us from plant staff who moved fuel and operated the fuel transfer system.
@jaredhaines57186 ай бұрын
@@dannywilliamson3340getting my fuel moving cert soon. Maybe I'll be on the bridge with you one day
@DanielDaniel1 Жыл бұрын
Am I right to assume that the containers are designed or pulled out in a specific pattern to avoid an accidental criticality incident?
@dannywilliamson3340 Жыл бұрын
By "containers" you mean fuel assemblies? If so, the storage racks have neutron absorbing material built into them, and, in the core, all control rods are inserted during fuel handling. So the reactor is in cold shutdown.
@YamiPoyo2 жыл бұрын
The two at once that were flopping all over what are those?
@keeno86 Жыл бұрын
Those are hollow shells designed to support control rod and fuel bundles in each cell, called a blade guide
@dannywilliamson3340 Жыл бұрын
They swing around while moving through the water because they're hollow tubes.....relatively light.
@OortCloud2 жыл бұрын
Is this within the core? I highly doubt it is, and I have zero clues on the camera's perspective relative to the reactor
@keeno86 Жыл бұрын
This is the core of the reactor and the spent fuel pool 👍 the camera is mounted to the mast of the refueling machine, 60 or more feet underwater
@MarcioCostacantor2 жыл бұрын
Boa tarde! Pra mim é uma honra viu prestigiar seu trabalho, vamos sempre juntos somar e fortalecer nossos objetivos, Conto com você, eu já estou por aqui,,.,
The blue glow of neutron radiation slowed down before the speed of light is awesome
@manuelurquiza75462 жыл бұрын
Ccherenkov radiation shows up when photons are traveling faster than speed of light
@williampask9396 Жыл бұрын
It's caused by charged particles (electrons in this case) moving faster than light (light moves slower in water so this is possible)
@Tirnadi3 жыл бұрын
We need more of this lol
@DitzyClouds3 жыл бұрын
Wait they get refuled while running?
@dannywilliamson3340 Жыл бұрын
The reactor is in cold shutdown while this is done.
@alpha38363 жыл бұрын
You know a Hardened Color Camera is noice when its called *_Rad_* Hardened Color Camera
@NoogahOogah3 жыл бұрын
At first I thought this was a “refuting machine” and I couldn’t wait to see it argue.
@BeTep_jlepeMeH3 жыл бұрын
Effect of Vavilova-Cherenkova is clearly seen. I mean the blue light around fuel bundles. Extremely dangerous but beatiful
@zofiakrasowska64233 жыл бұрын
is water moderator here?
@colinm31303 жыл бұрын
Moderator and coolant. Which means if you lose your coolant, you also lose your moderator and thus the loss of water also means loss of radioactivity. Chernobyl taught us why using Graphite for a moderator and water for a coolant was a bad bad idea.
@DeathWaves3 жыл бұрын
Came here from Scott Manley "Going Nuclear" series :)
@conscienciapositiva87063 жыл бұрын
I wonder what will happen in the next WWW and obviously types of bombing raids such as Dresden can destroy nuclear reactors?
@MateeGamevideos4 жыл бұрын
damn, you can see it heating up the water
@ValeJOR4 жыл бұрын
Imagine he accidently drop the fuel rod XD
@paulanderson794 жыл бұрын
That wouldn't cause a problem.
@dannywilliamson3340 Жыл бұрын
Chicken Little checks in.
@balbinaamazulu4584 жыл бұрын
Wer da abtaucht hat hinterher einen Cherenkov leuchtenden Heiligenschein.
@FlyingSeaMan2565 жыл бұрын
Amazing! I handle the waste!
@sz666s95 жыл бұрын
after the fuels changed,will the cover water removed to keep vessel outside dry?or the vessel remains under the water during operation'?
@neilzukov29213 жыл бұрын
Are you talking about the removable top of the vessel, were the control rods mechanism is siting? If you do, than, at least from what I know, during operation the reactor cavity (the pool the reactor is at the bottom of..) is dry, so the head of the reactor is also dry, but maybe there are some places that do keep the pool full of water, since water serves as a radiation shield. But that's only for PWR. BWR are always, from what I know, completely submerged, the pool is full with water, and that's probably because on the head of an BWR there is no control rods mechanism, do to the fact that control rods are inserted from under the reactor, so the mechanism is under the reactor. It's quite a shame that PWR pools aren't full during operation, since it's so cool and nice to see the heug equipment and the huge reactor at the bottom of the enormous pool. Every thing is super cool when under deep water, especially when it's something technological and big, like nuclear reactors and submarines.. The water gives it an sort of spooky but yet sublime feeling....
@sz666s93 жыл бұрын
@@neilzukov2921 Yes, that's exactly what im asking, does this mean that the refueling process has a process where the water surface rises and then falls again?a professional answer. Thank you very much
@TheGeekazoid5 жыл бұрын
right let me get this strait when the rods are spent they still at critical mass and are still producing radiation as in heat and gamma rays from the small uranium that's left in them still reacting... IF I'm correct in my thinking then how do the nuclear operators know when to swap out a rod? is it when they detect a rod isn't producing the same heat as the rest as in getting cooler? ALSO when they add a new rod to replace the one removed is the new rod in a separate pool full wack at critical mass producing heat and then in water it's picked up by a similar crane and transported into its slot in the core?? OR do they remove all the rods into cooling pools drain the entire water around the core and then a team moves in to fit in all new rods and water is pored in to get the rods at critical mass??
@DrLeroyGreen5 жыл бұрын
Does anyone else have a metallic taste in their mouth?
@mell75242 жыл бұрын
hold up..
@dannywilliamson3340 Жыл бұрын
Did you use the wrong thermometer again?
@pvrigna5 жыл бұрын
frightening !
@weisswurster5 жыл бұрын
Bet the operator of this machine is good at the claw game.
@dannywilliamson33402 жыл бұрын
Very good. From the operator's cab, it's about 70 feet down to the top of the core.
@ravlbi42685 жыл бұрын
isn't it avaible on Amazon?
@yourdad-lb4kh2 жыл бұрын
Yeah, it is available. I just bought it but I don't know why the cops are yelling outside my house
@bobbysingh73865 жыл бұрын
Cherenkov Radiation, completely normal 🤣
@juniordantas025 жыл бұрын
Awesome
@oskarmiazga19515 жыл бұрын
Please explain me why the used rod was glowing from cherenkov radiation, i mean how that was possibile ?
@TGLasers5 жыл бұрын
Afterglow, its still emmitting after its been in use. The cherenkov radiation dims down when the fuel stops fission. But even after fission has stopped it will still radiate for a while
@oskarmiazga19515 жыл бұрын
@@TGLasers so in these used rods there is some fuel?
@TGLasers5 жыл бұрын
@@oskarmiazga1951 This is the radioactive fuel. the rods themselves are the fuel
@oskarmiazga19515 жыл бұрын
@@TGLasers i know but aren,t they completly empty after use
@TGLasers5 жыл бұрын
@@oskarmiazga1951 No. They are "used up" but theres still alot of fuel left in them. there just inst enough for the power plants to efficiently produce power with them so they are decommisioned before all is fissioned up
@wwlb49705 жыл бұрын
It is funny how the reloading machine should shake the fuel assembly to densely insert it into reactor. A precision gen. II CANDU deserves.
@dannywilliamson33402 жыл бұрын
That's the operator shaking it to make sure it seats fully.
@Tuppoo945 жыл бұрын
I wonder how many Röntgens that Cherenkov radiation would be? ;)
@paulanderson794 жыл бұрын
None. It's visible light.
@globalko5 жыл бұрын
But can it handle 3.6 roentgens?
@phalanx38035 жыл бұрын
3:38 so are there single and duel fuel assemblies? or is this some sort of dummy / place holder Assembly?
@dannywilliamson33402 жыл бұрын
Dummy fuel bundles are used to hold the control blades in position.
@phalanx38035 жыл бұрын
3:38 so are there single and duel fuel assemblies? or is this some sort of dummy / place holder Assembly?
@moltres57405 жыл бұрын
The single one is the real fuel assembly. The double one is just a place holder to keep everything properly aligned while moving the fuel in and out.
@phalanx38035 жыл бұрын
3:38 so are there single and duel fuel assemblies? or is this some sort of dummy / place holder Assembly?
@akhil17815 жыл бұрын
Why is it glowing
@mczenk50955 жыл бұрын
Cherenkov radiation. Particles moving faster than light through water.
@paulanderson794 жыл бұрын
@@mczenk5095 more accurately entering the water where their speed is low than it would be in a vacuum. (Light travels more slowly in water).
@colchronic5 жыл бұрын
I hear it's equivalent to a chest x-ray
@paulanderson794 жыл бұрын
Not even that much. There's several meters of water between you and the core.
@freefall04835 жыл бұрын
Jesus. The decay heat and the glow!!!!!
@spitfiremac5 жыл бұрын
Exactly.
@aspopulvera91305 жыл бұрын
still... everything there is extremely hot that the water seems to distort the light
@ShimrraJamaane5 жыл бұрын
Yes, it is very hot but not so hot that it instantly boils water. In fact, that spent fuel pool is cool enough for divers to swim in.
@aspopulvera91305 жыл бұрын
@@ShimrraJamaane do spent fuel is where the DU came from?
@ShimrraJamaane5 жыл бұрын
@@aspopulvera9130 The majority of DU munitions is sourced from the byproduct of uranium enrichment which contains a low percentage of fissile uranium. Some DU is extracted from spent fuel but that is a significantly smaller amount (almost negligible). Here is a WHO fact sheet on DU: web.archive.org/web/20120815092349/www.who.int/mediacentre/factsheets/fs257/en/
@Managarn5 жыл бұрын
Ahlberg...The air is glowing! I say we evacuate the town
@3User5 жыл бұрын
It's sad that we haven't switched to molten salt breeder reactors yet, we'd get a much higher yield of energy. Those rods have only used 5% of their isotopes, the other 95% goes to waste, decaying away over thousands of years.
@Inorbit975 жыл бұрын
Coniver Divide why does the rest go to waste? Why aren’t they using the full true capacity?
@3User5 жыл бұрын
@@Inorbit97 the uranium used in fission reactions is uranium-235, the uranium which is found abundantly in nature is uranium-238, with a tiny proportion of uranium-235 mixed in with it. This uranium 238 is further enriched industrially so that the quantity of uranium 235 in the rods increases. After the enrichment, around 98% of the rod is uranium 238, and 2% Uranium-235. A fuel rod typically has a lifespan of 3 years, over these years the uranium 235 gets used up, and the waste products that are formed make up 5% of the composition of the rod, the rest is all uranium-238, which could be recycled by nuclear reprocessing, but doing so is considered too expensive by the companies which provide the power, thus, the rods are thrown away as nuclear waste and keep decaying and giving off all the remaining energy over thousands of years.
@colinm31303 жыл бұрын
Breeder reactors are not to generate power, but to create fuel. The rrods in these reactors get re-proressed to separate all the isotopes and reuse some for fuel. India, which doesn't have a lot of Uranium, bu a lot of Thorium is using Thorium breeder reactors to make Uranium for their thermal reactors. But the rest certainly does not go to waste. Even the U238 ( reactor fuel is only about 3% U235) can be turned into Plutonium or used for anti-tank bullets.
@DLDrillNB5 жыл бұрын
What a weird looking glowstick
@diego2252485 жыл бұрын
I feel the radiation in my eyes
@companymen425 жыл бұрын
3.6 Rotgen, I'm told it's the equivalent of a chest xray!
@paulanderson794 жыл бұрын
0. Several feet of water stops all the ionising radiation.
@alvarobg06203 жыл бұрын
CAN YOU SHUT UP?
@tomokokuroki25065 жыл бұрын
Thicc nuclear stack plays with hot rod then gets double penetrated.
@3User5 жыл бұрын
You would have lost $0.00 by not posting this
@magicstix0r5 жыл бұрын
If your containment room cameras can handle 10,000 gray, why aren't they using them in Fukushima where they're losing cameras at ~1000 gray?
@minimovzEt5 жыл бұрын
probably for accessibility reasons, the radiation resistant camera is too big to be used under the pressure vessel, if you notice every video of it the camera goes through a tube
@outtolunch28345 жыл бұрын
Question for the science geeks :). How do they know exactly which rods are spent or are they all replaced at once after a given span of time?
@ArchangelUltra5 жыл бұрын
Core neutronics simulations will be able to predict burnup of fuel rods. Buildup of fission products give radiation signatures that are also a reflection of burnup. Most PWRs operate in ‘batches,’ where one third of the fuel is removed and replaced. The rest of the fuel rods are moved around to make burnup more uniform over time.
@outtolunch28345 жыл бұрын
@@ArchangelUltra Cool, Thanks.
@christopherleubner6633 Жыл бұрын
They get moved around from the outside to the center then out. The rods are far from truly spent, but are pulled for safety reasons mostly because they can crack open or have unstable reactivity as the isotope composition changes internally.