Burnup Definition and 14 Threads

Hello, I'm working on BURN UP analysis on a NuScale PWR with variations on U235 enrichment and the number of Gd2O3 burnable poisons rods used. I use KCODE and KSRC card as attached below. I'm having trouble with the error message on the output file. At first, I fixed that by increasing the...

Hi everyone, I'm trying to compare 3 different fuels and MCNP and I want to recover the burnup of each. When I do that however, I get identical numbers for burnup, which doesn't make sense to me, as they have different materials (LEU vs LEU+ vs a thorium-based fuel). Does anyone know what...

Hi there! Me again. I am doing my research about converting HEU research reactor to LEU. I made FA and core finally and started using the burnup card to check changing of Keff and fission products. Well, the thing was only with one-month burnup my Keff was decreased drastically from 1.118 to...

I would like to know how the negative xenon load varies with core burnup. Does it increase or decrease as the core progresses from beginning of life to end of life? What is the reason for this change? Any help will be much appreciated

Hello, I am currently trying to understand the TUBRNP model which is used to calculate the isotope compositions and the radial power profile evolution with the burnup. I am talking about the basic model (the one from 1994 with only 6 isotopes taken into account) in the case of a LWR with UO2...

Designing a PWR core in MCNPX for burnup using 4 folds rotational symmetry to reduce computational time of the core, taking reflective boundary conditions on rotational symmetry planes. should the power be reduced to 1/4th of original power (3000 MWth) in burnup card or does the reflective...

Is there a conversion method to convert burnup from MWd/kgU or GWd/tU into % ? Always assuming that the fuel is UO2 with ~ 200 Mev per fission.

hi, everyone. something iv been pondering recently, is there a set speed at which something burns up in the air/atmosphere, or is it more to do with the surface area of the object traveling through the air, which would mean more of a drag force which means that the extra energy transforms to...

Hi for everyone, anyone knows whether it is possible to execute burnup process in MCNP5? I want to get K-inf as fuel depletion goes on. Thanks

hello,every body ,I want to know is there any any free burnup code? thank you

So, In Lamarsh, when he talks about the burnup , he's talking about the fission energy released per unit mass of fuel where as when he talks about consumption rate, he's talking about the amount of fissile matter consumed per unit energy produced?

I am interested in lowering the cost of nuclear reactors through the use of novel reactor designs, particularly fast reactor designs. The Integral Fast Reactor (“IFR”) is a good starting point for a discussion since it was a real reactor with a long operating history. A few features of the...

What is the difference between burnup calculations and depletion calculations?

Hey , 1-What is exactly the difference between the Burnup rate and Consumption rate?? 2-Why do most authorities usually use the term of Burnup rate while the consumption rate it seems to be more general ?!