Taking out fuel rods from an RBMK reactor in singleplayer can crash the game

[minceraft12]

Issue description

When taking out fuel rods of any type from an RBMK reactor in singleplayer, it crashes the game 20% of the time.

Steps to reproduce

1. Have a fuel-loaded RBMK reactor
2. Take all the fuel out
3. Game may crash

Forge version

40.2.17

Nuclear Tech version

0.0.20

Other mods

Oculus 1.6.4 (performance mod)
Embeddium 0.3.0 (performance mod)
Better Fusion Reactor for Mekanism PLUS (unused as of bug report)
Colored Redstone Lamps 1.2
Create 0.5.1.f (unused as of bug report)
Create Deco 1.3.3
Immersive Portals 1.4.20 (unused as of bug report)
JourneyMap 5.9.7
JEI 10.2.1.1005
Macaw's Furniture 3.2.2
Macaw's Lights and Lamps 1.0.6
Mekanism 10.2.5.465
Mekanism Additions 10.2.5.465
Mekanism Generatiors 10.2.5.465
Mekanism Tools 10.2.5.465
Modern Lights 2.3.0
Orva Alarms and Sirens 3.0
SecurityCraft 1.9.8
message (1).txt

(Crash) Log

(in other mods)

[MartinTheDragon]

This is something that shouldn't even be possible logically, but I can still make sure the code doesn't fail like that.
Thanks for reporting!