Some combinations of IFE blanket parameters cause an exception running costing code

[craastad]

This was observed when working on the IFE portion of the web costing calculator.

The goal of this task is to investigate the parameters and calculations that cause the error and propose changes to allow all feasible sets of IFE blanket parameters. This would be a good task to add some automated tests for verification, running costing code for inputs and asserting cost calculations work.

Relevant code:

• Blanket Parameters object - inputs.py
• Blanket Parameters - IFE definition - here parameters can be varied to trigger the error

The committed definition work without error:

blanket=Blanket(
            first_wall=BlanketFirstWall.LIQUID_LITHIUM,
            blanket_type=BlanketType.FLOWING_LIQUID_FIRST_WALL,
            primary_coolant=BlanketPrimaryCoolant.LITHIUM_LI,
            secondary_coolant=BlanketSecondaryCoolant.WATER,
            neutron_multiplier=BlanketNeutronMultiplier.PB_AS_PART_OF_PBLI,
            structure=BlanketStructure.FERRITIC_MARTENSITIC_STEEL_FMS,
        ),

Parameters that cause the issue:

blanket=Blanket(
          first_wall=BlanketFirstWall.FLIBE,
          blanket_type=BlanketType.SOLID_FIRST_WALL_WITH_A_LIQUID_BREEDER,
          primary_coolant=BlanketPrimaryCoolant.LITHIUM_LI,
          secondary_coolant=BlanketSecondaryCoolant.WATER,
          neutron_multiplier=BlanketNeutronMultiplier.PB_AS_PART_OF_PBLI,
          structure=BlanketStructure.FERRITIC_MARTENSITIC_STEEL_FMS,
      ),

TODO add output of exception

[craastad]

Fixed in #68
Related to Issue #54