Reactor Definition and 356 Threads

Nuclear-Plant Analyses Ordered http://online.wsj.com/article/SB120847674445424819-email.html Article also mentions that the interest in new plants is leading to heightened scrutiny of existing plants; a few licenses are at risk. Why the additional scrutiny?

I heard and read several times that a pebble bed reactor is "safer" than a PWR or a BWR. However, I fail to figure out how. After all, light-water reactors also have negative temperature coefficients, which seem to be the "invention" that makes the pebble bed reactor "inherently safe". But I...

This may not be an appropriate place to ask this, and if that is the case please chastise me and cast me out. Given that the members of this forum seem to be very educated and intelligent, especially in regards to these fields I wanted to ask a question. What would be the absolute worst case...

http://www.thalesnano.com/products/h-cube Hopefully I can convince the boss to buy one of those puppies. They sound so friggin sweet -mg to 100g scale hydrogenations -premade cartridges w/ desired catalysts -0-100 C temperature -1-100 bar pressures can be used -can monitor reaction...

Does anyone know why this project lost its funding? From what I understand it was three years from being completed. The prototype EBR II which had tests conducted to verify the passive safety system were successful and then BAM funding is cut. Was it due to Chernobyl or Three Mile Island. I...

I found these forums while doing background research. Since there seem to be quite a lot of experts hanging around here, can you review my RBMK reactor diagram - http://commons.wikimedia.org/wiki/Image:RBMK_reactor_schematic.svg ? Any comments are welcome.

Homework Statement What product of heavy water reactors has been used to create hydrogen bombs? Homework Equations This is basically what I'm looking for. The Attempt at a Solution It's not a math question. I took an online quiz for my class and it said it was Tritium, but I...

Hi All, I tried searching on the internet but I could not find much info. How does a MITEE (Miniature Reactor Engine) work? It's for a school project. What are the inputs and processes that go on within such an engine? Thanks! Y.A.

The plutonium that is produced in a nuclear reactor, is it still able to be re-used in another reactor? If it can be re-used, does it need another special type of reactor to be effective? Are they doing this and I am just unaware of it?:confused: Thanks!

If I have a reactor that needs to operate at 300 kW thermal power for twenty years, how much fissionable material (U-235) do I need? I calculated that this will require 1.89E14 J, or 1.18E27 MeV. 931 MeV = 1u, so I have 1.27E24 u. This is .002 kg, which seems really small. Am I doing...

What nuclear fission reactor design has the least environmental impact? Including the building, operating, safety, and amount of pollution produced? I'd imagine IFR/breeder reactors as they burn actinides.

I know we use radioactive elements in nuclear reactors and the heat given of to generate electricity in the traditional steam driven turbine way, at least that's what I read. I was wondering why we can't make it more efficient through double electron capture and use captured electrons given off...

Any ideas about the causes of the incident at the new Australian research reactor (OPAL) where some fuel plates in some of the assemblies were found to be elevated? I.e., translated vertically upwards. This has been reported as the plates being "partially" dislodged, but the actual degree of...

i have desided to make a miniature nuclear reactor as my science project .i beg the helps from all physicsforum members...

Does anyone here know of any books which teach how nuclear reactors work/are constructed? Thanks in advance.

Hi, I am trying to do a experiment on artificially induced hibernation of mice. I am trying to send 80ppm of a hibernation inducting substance in the atmosphere of the mouse cage. The compound is H2S which is generally toxic but completely safe at these levels. H2S is gaseous at -60 degrees...

Consider a reactor being held sub-critical, Keff < 1, by control rods. The reactor has heavy water reflector and has been operatored for some time prior to the current state (we got Photo Neutrons). Keff is then bought to 1. It seems to me, for Keff = 1 the neutron population should be...

Ok so I know that this seems like an absolutely absurd and almost impossible idea but I want to build a nuclear reactor to enter in the state science fair next year. I know that it takes time, wit and money but I'm completely prepared to take on the challenge. So the point of posting this...

In an argon atmosphere, there is a pure platinum crucible that is used to heat Calcium Chloride salts to 850 deg C. After it is heated, pure chlorine gas is bubbled through the molten salt to remove CaO impurities. The heating method is by induction heating. My questions/concerns: Since we...

Hello, Quick question I'm having a hard time finding much information, or at least information I'm absorbing. I'm just supposed to write a paragraph on: Could the same accident at Chernobyl happen in a CANDU 3 reactor? Anything to help get me started anyone?

I read a sentence in my book saying, The fast neutrons released through the first nuclear fission are passed into the moderator, thus producing (becoming) thermal neutrons. What is a Thermal neutron? What is the difference between Thermal and a Fast Neutron?

There's a a paper by J Marvin Herndon about the feasibility of a fission reactor about 5 miles wide at the centre of the Earth,which could generate the geomagnetic field.Someone said in New Scientist magazine that because gravitational forces are nearly zero at the Earth's centre then the heavy...

Homework Statement The elements of a boiling water nuclear reactor consist of long cylindrical rods of uranium dioxide (U02) of diameter 8mm surrounded by a thin layer of aluminium cladding. In the reactor core the elements are cooled by boiling water at 285°C with a heat transfer...

I am not sure why the Pebble Bed modular reactor (PBMR) is being touted as the great solution to problems with nuclear power. It uses a once through, virtually non-reprocessible fuel. It produces a high volume of waste consisting not only of the fuel but the casing/moderator which has about 50...

Hey there , It's known that metalic U was uesed as a fuel in certain types of reactors. What I 'd like to know : 1-Which type of reactor use metalic Uranium ? 2-Is Uranium metal used nowdays as a fuel? 3-what are the disadvantages of using U as a metal beside reacting highly with water ?

please help me in understanding the following scenarios: 1. how could one approach first criticality in practice? 2. what would happen if we start-up with full power conditions from first criticality? 3. what would the shutdown requirement be in comparison to an equilibrium core? thank...

using tin foil and fissile material from 1950s glow in the dark stuff. does anyone have a link/ know anything about this? i vaguely remember reading about it a while back but maybe i just dreamt it or something...?

now, in simple terms, all a nuclear reactor is a steam engine i know that we use the emitting nutrons to heat up water, which boils, then moves a turbine, but THIS IS SO SIMPLE! why, why, why, isn't there a more simple way to convert this neutron into useable energy? a significantly size...

What would happen if we applied high potential difference to a mixture of deuterium and tritium gases in a superconducting tube?:confused: Would the electric discharge give suffecient energy and conditions for fusion to occur??:rolleyes:

In a nuclear reactor, neutrons released by nuclear fission must be slowed down before they can trigger additional reactions in other nuclei. To see what sort of material is most effective in slowing (or moderating) a neutron, calculate the ratio of a neutron's final kinetic energy to its initial...

This is a developing area in the nuclear industry involving large scale multiphysics computation. For the past several years Argonne National Laboratory and Purdue University have been supported by the Department of Energy (DOE) and the Electric Power Research Institute (EPRI) to develop a...

"nuclear reactor physics" by Weston Stacey I just bought it and started reading it. Anybody know the book ? Opinions, remarks ? I might have a few questions when reading it, are some people prepared to discuss it ? As a first question, actually, on the cross section plots, there's always...

pleas interduce a site that contain hamilton nuclear reactor analysis books chapter problem solution tnx.

a natural 2 billion year old nuclear reactor was found arfrica http://www.discover.com/web-exclusives/natures-nuclear-reactor0204/ What I think is intersting about is that each nuclear reaction lasted exactllay 30 min not 25 not 32 but exactally 30 min.

I recently came upon a reference to http://www.focusfusion.org, which led me to discover http://www.prometheus2.net and http://www.electronpowersystems.com. What these companies have in common is they propose to generate power using "clean" proton-boron fusion in a pulsed reactor. By pulsed, I...

I have a problem that has a common core and two wound coils. The core is square with sides A and D opposite and C and B opposite. Side A and D have the same cross sectional area and side C & B have the same cross sectional area. Sides C and B have the coil around them. I know the current in...

does an electrostatically confined plasma fed tritium produce energetic e3nough neutrons to create tritium if allowed to irradiate deutrium ?

[SOLVED] Materials for Nuclear Reactor Please briefly explain the Materials which are used in nuclear reactor. such canning material, moderator etc. :confused:

http://www.ndtv.com/morenews/showmorestory.asp?slug=India+unveils+thorium+reactor&id=77898 How significant is it?

What are projects about nuclear controlled fusion reactor to achieve Q > 1, or possibly obtain Q > 1.

Do you know any code for reactor physics study ?

PLEASE INFORM ME ABOUT THE CONTROLLED FUSION REACTOR. Is possible the continuos use the fusor and plasma focus, using fuel : pB11 or D-He3. Please send me information. Best Regards

French fusion reactor and some other skeptical stuff http://www.sciencedaily.com/upi/index.php?feed=Science&article=UPI-1-20050627-10372700-bc-nukefusion.xml Someone brought this up on a non-scientific site and said it would "provide 2x the worlds energy". Obvious BS so I am wondering if...

I looking for research about matter - antimatter reactor; any information is good. Thank you.

In astronomy class i was told that a grouping of hydrogen must reach 10,000,000K for fusion to occur. Without a sun being a certain size, gravity could never be great enough to generate such high temperatures-brown dwarf. So, could you artificially accelerate gravity (as in future plans for...

Most commercial nuclear fission reactors are large, on the 1000MW order of magnitude. Some of the early experimental reactors were small, and the reactors in nuclear submarines are relatively small. I understand that the Navy even has one very small (crew of 7 people, 400 tons v...

I’ve seen quantum singularity reactors on Star Trek and Babylon 5, and I’ve got a few questions. First of course, are they theoretically possible? How would they work exactly? And how much power could they generate? (One such reactor on a starship in Babylon 5 generates 330 exawatts, for...

First Post :smile: What type of Coolant is currently used in Navy Nuclear reactors? I have searched on google and came up with 2 things, Lithium Hydride and Pure Water pressurized to 2200+ PSI. Is there anything else used as a coolant? Thanks

How far is research really gone? Is there any major breakthrough on its way? Are the first prototypes ready yet? I'm making a project work on this for school, and I find it hard to find sufficient information in books and likes about this, since clearly, books from the beginning of the last...

Is A Nuclear Reactor A... I am not sure if this is the right forum or not, I figure its about space stuff so it might be. My question is, could one safely use a nuclear reactor on a large-scale space station. Of course there is the issue of shielding, but since space stations have to be...