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Regarding MCNP error msg

  1. Dec 8, 2016 #1
    I am running MCNP. It gives a error massage : fatal error description of cell 27 uses 1098 words. 1000 words max.

    I am not able to resolve this. If any body can explain me about this error and how to correct it.

  2. jcsd
  3. Dec 8, 2016 #2


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    Staff: Mentor

    Is there additional detail you can provide here that might assist someone who uses MCNP to help you with this?
  4. Dec 15, 2016 #3
    That happens when the cell description is too long. MCNP has a limit on that. Correcting this depends entirely on your problem geometry. If you can, break that cell into simpler Boolean expressions or different simpler cells.
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