Can anyone with these error messages

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The main issue with running the MCNP input file is the presence of negative numbers in the input data, which the program cannot process. It is recommended to address the first error encountered and rerun the program, as subsequent errors may stem from the initial problem. Fixing the first error can help clarify if other issues exist. Ensuring all input values are valid and positive is crucial for successful execution. Resolving these errors will lead to a smoother running of the MCNP simulation.
ISAAC BAIDOO
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i am trying to run my mcnp input file and these are the error messages which i do not no how to fix them.
 
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As a general practice try to fix the first error and run again as subsequent errors may be a result of the first error and the programs desire to continue to the bitter end.
 
Yeah, looks like the main problem is that you have negative numbers in your input data, and the program does not seem to like that...
 
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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