Reactor Definition and 356 Threads

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Dear Experts I would like to create a small modular reactor-like geometry for Serpent code (example: ABV reactor). How can I add a control rod to the center like in the picture below? Which code scripts should I add in the geometry part. And how can I do this in Hexagonal laticce?

So basically, instead of using large complex pumped lasers, we use chemical lasers that have insane power output. They are used to fuse a fusion pellet. The excess energy is collected and part of it is used to prepare the next batch of chemicals needed to run the laser. What would be the...

Help, im try to make one work in the RITM-200 reactor series, but cant find some informartion... any tip?

A California company Kairos has received a permit to build a non power producing salt cooled nuclear reactor at Oak Ridge Tennessee.The reactor is considered safer since it uses a low-pressure mixture of molten fluoride salts of Lithium and Beryllium called FliBe. Molten salt reactors are not...

What is the size of the smallest reactor ever made?

Sorry for bad english, does anyone know where I can purchase a spherical vacuum chamber made from metal, that preferably ships internationally ?

The JHR Material Test Reactor is currently under construction at the CEA Cadarache centre. https://jhrreactor.com/en/about/ The CEA began exploring the possibility of designing and building a new reactor to replace its material test reactor called Osiris* in the 1980s and 1990s. The JHR...

NuScale Power a startup company whose product is a modular reactor of 50 MW has received NRC certification so utilities can reference this reactor in their application to build a power plant using this design...

Why have no Variable spectrum reactors been produced? A reactor that could start by burning natural U, like the CANDU or RBMK, and then transition to a fast spectrum seems to be ideal. Running nuclear fuel from raw material to nuclear ash all in one reactor seems to be the solution for people...

Hello ! I would like to consult you about this cylindrical nuclear reactor model that I have been thinking of with the idea of reducing the friction of the plasmas with the walls of the Toroidal nuclear fusion reactors that causes the plasma temperature to drop and the nuclear reactions to stop...

For a given fuel and quantity, is there a way to estimate the Thorium requirements?

This has probably been asked before but why don't commercial LWR use beryllium in the core or more likely around the fuel or mixed within the fuel as an additive? Beryllium gives off 2 neutrons if hit by a neutron that has on average more than 1.9 MeV and also produces neutrons when bombarded...

I tried using the equation Q'*t= Q1+Q2. Where Q' is the energy of the reactor aka 200,000 kJ and t is the time. Take Q1 to be (1/2m*2257) and Q2 to be (1/2m*4.184*90). The 90 is the change in temperature for the phase change to occur from liquid water to gas, or boiling. Plugged everything in...

I'm studying fast reactors. I can't seem to find a clear answer to my question. I know fast reactors are fueled by either plutonium 239 converting uranium 238, or uranium 233 converting thorium 232, or fueled by highly enriched uranium. Which is the better and why?

How do I create a nuclear fission reactor? if you can link me up to any places to buy the things or any other sites that would be good.

What is the limitation of length of a fuel bundle in a nuclear reactor. Can we increase the length of bundle consequently reducing the number of bundles in a fuel channel?

Hey, its that under educated guy again, I hope the mighty big brains can spare me my feelings. Anyways, I saw this toy that levitated a ball of water using nothing but sound waves. So naturally I tried to apply this to a plasma and fusion. Using a inert gas reactor, or a fusor for that matter or...

Hello, I had an extremely unusual question I was hoping someone could answer (my sincere apologies if I posted this in the wrong forum). I am currently working on a project which aims to assign a point/performance value to new legal legislation (using criteria associated with reactor...

I'm working on an interesting task at the moment related to a core and fuel design for a fast reactor system. Given that the system is a fast reactor, we select a sensible lattice, i.e., a triangular or hexagonal lattice. Neutronically, one can solve for the necessary mass of enriched (less...

French press reports indicate that the first of the two EPRs built at Taishan in Guangdong province has unusually high levels of radioactive noble gases in the primary cooling circuit, presumably as a result of defective fuel bundles...

Hi. I'm just a curious person with high-school-level scientific knowledge. However, I was wondering if a specially-engineered Generation IV high or very high temperature (800-1,000ºC) nuclear reactor could work in Venus using the local atmosphere at 450ºC as "coolant", just like a "typical"...

The assignment is to find the optimal operating temperature and maximum product concentration of reactant B, assuming a constant temperature across the PFR length. Please could someone help? thanks the reaction is a series reaction: A → B → C (liquid phase) Here is my current code which is...

Homework Statement:: French Fusion Reactor Relevant Equations:: F=ma Hey anyone here working on the French Fusion reactor? Heard about it over the radio. ITER just been reading the annual reports from CERN. Kind of a fun read if you haven’t read it yet.

Made using Blender 3D, version 2.9, rendered in eevee. https://www.artstation.com/artwork/oAmVDw

I have been thinking and I thought of a design that may, theoretically result in spacecraft being able to have a self sufficient energy source on board. Here’s my theory, if you have a minimized nuclear reactor (if building something like this is even possible given that the nuclear reaction...

E= 3/2 (1.381x10^-23)(4x10^8)(2x10^19)50 E= 8.29 x 10^6 Wrong

I really like the book for how much it covers. There's not a single topic that's missed that is relevant to nuclear reactor design/analysis. Often other books can miss a topic or two. It's just that the style is not to the point and often time is wasted talking about things that are irrelevant...

While reading about neutron interactions in a book I noticed that there is some amount of fast fission going on even in a thermal reactor with a water moderator/coolant. So essentially after each neutron that survives to the thermal range and manages to produce a fission event , on average 2 to...

I'm aware that geometric buckling is equal to material buckling when k =1, any pointers on how to set up the boundary conditions for this problem?

I've been thinking about molten salt reactors a fair bit here and there, and one thing that I keep wondering about is how do they start? Ie How does one take a system of pipes, pumps heat exhangers etc, filled with a solid salt at room temp, to melt that salt, and then operate? Or is the...

Hi, I'm working on a project for a thermal fluids design class in which a theoretical Thorium reactor is to be designed and modeled, and I'm a little bit at a loss for how to start analyzing the problem. I know the system will have 4 fluid systems: an enriched FLiBe system connected via HX to...

Would Chernobyl reactor #4 still have exploded if the control rods had not been tipped with graphite? Or would the severity of it just have been mitigated?

We all are aware of the looming danger of climate change and so I want to do my part. I plan to capture the carbon dioxide from the air using magnesium oxide, turning it into magnesium carbonate, and then heating it up to reverse the process while capturing the carbon dioxide. The Sabatier...

Summary: Has there been a functioning molten salt reactor or how far has the development of one reached? By who? Has there been a functioning molten salt reactor or how far has the development of one reached? By who?

why does a polywell not generate net power? what are the loss mechanisms?

Here is a 3D model I made of a nuclear reactor and reactor core.

Hey guys, what would you say are the most important aspects of the job of being a nuclear reactor operator?

Summary: If SCRAM completely removed all moderator from the reactor, would decay heat still be an issue? My understanding of how decay heat occurs after shutdown in large scale Nuclear Power Reactors. Is that Beta Decay causes residual Neutron activity at a small fraction of the operating...

Hi, i am new to simulation and for my thesis i have to make a simple simulation by using mcnp4c2. Is anybody familiar with this version of MCNP? I need to calculate the fission reactions per second in a geometry of a spherical sub critical reactor of Uranium with low percentage of U 235 with...

I was wondering, if I want to understand qualitatively the response of a reactor to a large step insert of reactivity (e.g. more than 2/3 $) is it allowed to neglect the latent neutrons contribution to simplify the equations ?

How would electricity be generated from a nuclear fusion reactor? How soon do you think that fusion power plants will become a reality?

To write the equation I took as the control volume the following block: and the equation I wrote are: $$ 6m_{f} c_{p_{f}} \frac {dT_{f}}{dt} = 6P - \frac 1 {R_1} (T_f - T_g) \text{ for the fuel}$$ $$ m_{g} c_{p_g} \frac {dT_{g}}{dt} = \frac 1 {R_1} (T_f - T_g) - \frac 1 {R_2} (T_g - T_c)...

There are already 4 generations of nuclear fission reactors. (Compare https://en.wikipedia.org/wiki/Nuclear_reactor#By_generation.) However among these, there does not seem to be a (maximum) safe nuclear fission reactor design, which immediately stops the nuclear chain reaction when the reactor...

Summary: The new HBO miniseries inspired me to use blender 3D to re-create the Chernobyl control room. The HBO miniseries about Chernobyl inspired me use a 3D modeling program called Blender to re-create the RBMK-1000 reactor control room of the Chernobyl nuclear power plant. It's about 95%...

Hi fellows. I am dealing with the following question and any help to solve it will be a huge favor. Let us consider a nuclear power plant which delivers 100 MWe. The plant is based on a Rankine cycle, where the steam exiting the reactor is at 350 C and water exits the condenser at 20 C. The...

I am currently setting up a simulation for thermal hydraulic analysis of an AGR fuel bundle. However, the walls in this type of reactor, have a specific roughness that promototes turbulence which in turn provides better heat transfer characteristics. I am struggling to find data online to...

Hi, I'm looking for a simple explanation of the meaning of the crow flight distance and why it is defined as the second moment of a probability distribution: $$\bar r^2 = \int r^2 p(r)dr$$ Where ##p(r)## is the probability that a neutron is absorbed in the interval ##dr## near ##r##. And what...

Hi, I want to make a simple nuclear reactor core simulation to calculate the thermal power production. Is there any open source code with interface (or not) that you recommend to use? The core have cylindrical shape with Uranium( up to 90% enriched) molybdenum fuel,Beryllium reflector and one...

Hello: I have small question , as I read about the ATF research in the news ,a question present it self , why no one does any research on heat carrier in nuclear reactor that can absorb nuclear radiation and change it to infra red radiation ? Best H