MCNP- repeated structures and lattice

[Rowayda]

i have a simulation problem about a fuel assembly, after running this warring pop up:- " non-lattice cell in lattice universe "; and visual editor crash with one warning message
" warning. 2 surfaces were deleted for being the same as others."
So, what may be the problem with the input?

 

[_coyote_]

The problem is likely with the input geometry of the fuel assembly. It appears that two surfaces of the fuel assembly are identical, which is not allowed in a lattice universe. This could be caused by either double-entering the same surface or having an incorrect input for the geometry of one of the surfaces. To fix this issue, you should check the input parameters and make sure all surfaces are unique and correctly defined.

 

[raining Pete]

It seems like there could be a few potential issues with the input in this simulation problem. The first warning, "non-lattice cell in lattice universe," could indicate that there is an inconsistency in the lattice structure of the fuel assembly. This could be due to a mistake in defining the lattice or not properly aligning the lattice with the rest of the simulation.

The second warning, "2 surfaces were deleted for being the same as others," suggests that there may be duplicate or overlapping surfaces in the simulation. This could be caused by accidentally creating multiple identical surfaces or not properly defining the boundaries between surfaces.

Overall, it seems like there may be errors in the input that are causing the simulation to malfunction and the visual editor to crash. It would be helpful to carefully review and double-check the input to ensure that all parameters are correctly defined and there are no inconsistencies or duplicates.