This addon comprises of CraftTweaker and NuclearCraft : Overhauled scripts (along with the associated textures) to add 7 additional heat sinks to NuclearCraft : Overhauled.

A spreadsheet related to all the stuff in this will be coming soon.

Planned:-

1) 6 additional Neutron Reflectors

2) 4 additional Moderators

3) 10 additional Heat sinks in the next update.

Note that you require CraftTweaker and NuclearCraft : Overhaul to run this addon!

Similar Stuff that you should check out:-

MoarFuels by QuantumTraverse (adds more nuclear reactor fuels)
Moar Reactor Functionality by QuantumTraverse (improves usability of the fission reactors)
Moar Realistic Radiation by QuantumTraverse (provides more realistic radiation values for various blocks and items)
Moar Realistic Enrichment by QuantumTraverse (makes the uranium enrichment process more realistic)
NuclearCraft: Overhauled Unrealistic Turbine Overhaul by Thalzamar (adds more rotors and dynamo coils)
Nuclear Oil Refining by Thalzamar (adds an in-depth oil refining process to extract extra energy)
NuclearCraft Extra Ingot Blocks by FishingPole (adds blocks for many NuclearCraft ingots)

MoarHeatSinks by QuantumTraverse (adds more nuclear reactor heat sinks)

InertMatrixFuels by IrradiatedKitten (adds more nuclear reactor fuels)

This addon has been inspired by QuantumTraverse's Moar Heat Sinks. He also helped me in rectiyfing stuff.

Credits: Thanks a lot to TomDodd for making NuclearCraft: Overhauled (as well as Underhaul) and adding all of the base functions upon which this script-addon is built.

Alloy Heat Sinks