Calculating Group Constants for FA with MCNP

AI Thread Summary
To calculate group constants for a fuel assembly using MCNP, consider utilizing simpler tools designed for lattice calculations. One recommended resource is the OECD-NEA program, which can assist in this process. Users are encouraged to explore this program for efficient calculations. The discussion emphasizes the importance of selecting appropriate tools for specific nuclear engineering tasks. Overall, leveraging specialized software can streamline the calculation of group constants.
chivasorn
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hi there

I wnat to calculate the group constants for a FA(fuel assembly) using MCNP (similar to lattice calculations).
How can I do it? Please lead me.
Thanks alot!
 
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For this particular purpose, you may be more interested in a simpler tool.
For example, have a look at this program http://www.oecd-nea.org/tools/abstract/detail/NEA-1840/

chivasorn said:
hi there

I wnat to calculate the group constants for a FA(fuel assembly) using MCNP (similar to lattice calculations).
How can I do it? Please lead me.
Thanks alot!
 
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Hello everyone, I am currently working on a burnup calculation for a fuel assembly with repeated geometric structures using MCNP6. I have defined two materials (Material 1 and Material 2) which are actually the same material but located in different positions. However, after running the calculation with the BURN card, I am encountering an issue where all burnup information(power fraction(Initial input is 1,but output file is 0), burnup, mass, etc.) for Material 2 is zero, while Material 1...
Hi everyone, I'm a complete beginner with MCNP and trying to learn how to perform burnup calculations. Right now, I'm feeling a bit lost and not sure where to start. I found the OECD-NEA Burnup Credit Calculational Criticality Benchmark (Phase I-B) and was wondering if anyone has worked through this specific benchmark using MCNP6? If so, would you be willing to share your MCNP input file for it? Seeing an actual working example would be incredibly helpful for my learning. I'd be really...
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