Reactor Moderators (2024)

Reactor Moderators (commonly incorrectly referred to as Reactor Coolants) are materials placed inside of a Reactor during construction. When a reactor is in operation, a moderator may change the way the reactor performs depending its properties.

The below information is accurate for Bigger Reactors 0.5.x (1.16) and 0.6.x (1.17-1.19) or earlier versions, the simulation changes in 0.7.x (1.20+)

Moderators have four main properties that affect the reactor simulation:

See Also
Reactors

  • Absorption: The speed at which radiation is absorbed and converted to case heat.
  • Efficiency: How efficiently absorbed radiation is converted into heat.
  • Moderation: The effectiveness at which radiation is moderated ("softened").
  • Conductivity: How well heat is transferred from the fuel rods to the reactor casing.

In general, higher values are always better (except for absorption, which may be better or worse depending on your reactor design). For a more in-depth explanation on how to use the information here, see the simulation page.

Something to note is that Modpack authors have the ability to add or modify moderators. For an accurate list of supported blocks/fluids, use Just Enough Items (JEI) by checking the uses for the Reactor Terminal (currently broken on multiplayer).

Moderator Properties (0.5.2)

The values listed below are accurate for Bigger Reactors 0.5.2, for Minecraft 1.16.5. Also correct for 0.6.x (1.17-1.19)

TypeIDAbsorptionEfficiencyModerationConductivity
registryastralsorcery:liquid_starlight0.850.82.03.0
registrybiggerreactors:ludicrite_block0.60.8733
registrybloodmagic:life_essence_block0.70.551.752.5
registrymekanism:ethene0.370.651.91.5
registrymekanism:hydrofluoric_acid0.60.451.42.5
registrymekanism:hydrogen0.20.31.20.1
registrymekanism:hydrogen_chloride0.310.651.71
registrymekanism:lithium0.70.61.040.7
registrymekanism:oxygen0.010.351.040.1
registrymekanism:sodium0.230.61.71
registrymekanism:steam0.330.51.330.5
registrymekanismgenerators:deuterium0.030.31.070.1
registryminecraft:air0.10.251.10.05
registryminecraft:cave_air0.10.251.10.05
registryminecraft:glass0.20.251.10.3
registryminecraft:ice0.330.331.150.1
registryminecraft:snow_block0.150.331.050.05
registryminecraft:void_air0.10.251.10.05
registryminecraft:water0.330.51.330.1
registryminecraft:lava0.330.331.150.7
tagforge:storage_blocks/allthemodium0.660.93.53.5
tagforge:storage_blocks/aluminum0.50.781.420.6
tagforge:storage_blocks/bronze0.510.771.411
tagforge:storage_blocks/copper0.50.751.41
tagforge:storage_blocks/diamond0.550.851.53
tagforge:storage_blocks/electrum0.530.821.472.2
tagforge:storage_blocks/emerald0.550.851.52.5
tagforge:storage_blocks/enderium0.530.881.63
tagforge:storage_blocks/gold0.520.81.452
tagforge:storage_blocks/graphite0.10.522
tagforge:storage_blocks/invar0.50.791.430.6
tagforge:storage_blocks/iron0.50.751.40.6
tagforge:storage_blocks/lead0.750.751.751.5
tagforge:storage_blocks/lumium0.750.551.51.8
tagforge:storage_blocks/nickel0.50.821.460.6
tagforge:storage_blocks/osmium0.510.771.411
tagforge:storage_blocks/platinum0.530.861.582.5
tagforge:storage_blocks/signalum0.630.661.51.8
tagforge:storage_blocks/silver0.510.791.431.5
tagforge:storage_blocks/steel0.50.781.420.6
tagforge:storage_blocks/tin0.30.71.350.75
tagforge:storage_blocks/unobtainium0.950.8225
tagforge:storage_blocks/vibranium0.150.7584
tagforge:storage_blocks/zinc0.510.771.411
fluidbiggerreactors:liquid_obsidian0.30.71.350.75
fluidallthemodium:molten_allthemodium0.660.93.53.5
fluidallthemodium:molten_vibranium0.150.7584
fluidallthemodium:molten_unobtainium0.950.8225
fluidallthemodium:vapor_allthemodium0.660.93.53.5
fluidallthemodium:vapor_vibranium0.150.7584
fluidallthemodium:vapor_unobtainium0.950.8225
fluidtagforge:superheated_sodium0.230.61.71
fluidtagforge:redstone0.750.551.62.5
fluidtagforge:ender0.90.752.02

Moderator Properties (0.4.3)

The values listed below are accurate for Bigger Reactors 0.4.3, for Minecraft 1.16.4.

TypeIDAbsorptionEfficiencyModerationConductivity
registryastralsorcery:liquid_starlight0.850.82.03.0
registrybiggerreactors:ludicrite_block0.60.8733
registrybloodmagic:life_essence_block0.70.551.752.5
registrymekanism:ethene0.370.651.91.5
registrymekanism:hydrofluoric_acid0.60.451.42.5
registrymekanism:hydrogen0.20.31.20.1
registrymekanism:hydrogen_chloride0.310.651.71
registrymekanism:lithium0.70.61.040.7
registrymekanism:oxygen0.010.351.040.1
registrymekanism:sodium0.230.61.71
registrymekanism:steam0.330.51.330.5
registrymekanismgenerators:deuterium0.030.31.070.1
registryminecraft:air0.10.251.10.05
registryminecraft:cave_air0.10.251.10.05
registryminecraft:glass0.20.251.10.3
registryminecraft:ice0.330.331.150.1
registryminecraft:snow_block0.150.331.050.05
registryminecraft:void_air0.10.251.10.05
registryminecraft:water0.330.51.330.1
tagforge:storage_blocks/allthemodium0.660.93.53.5
tagforge:storage_blocks/aluminum0.50.781.420.6
tagforge:storage_blocks/bronze0.510.771.411
tagforge:storage_blocks/copper0.50.751.41
tagforge:storage_blocks/diamond0.550.851.53
tagforge:storage_blocks/electrum0.530.821.472.2
tagforge:storage_blocks/emerald0.550.851.52.5
tagforge:storage_blocks/enderium0.530.881.63
tagforge:storage_blocks/gold0.520.81.452
tagforge:storage_blocks/graphite0.10.522
tagforge:storage_blocks/invar0.50.791.430.6
tagforge:storage_blocks/iron0.50.751.40.6
tagforge:storage_blocks/lead0.750.751.751.5
tagforge:storage_blocks/lumium0.750.551.51.8
tagforge:storage_blocks/nickel0.50.821.460.6
tagforge:storage_blocks/osmium0.510.771.411
tagforge:storage_blocks/platinum0.530.861.582.5
tagforge:storage_blocks/signalum0.630.661.51.8
tagforge:storage_blocks/silver0.510.791.431.5
tagforge:storage_blocks/steel0.50.781.420.6
tagforge:storage_blocks/tin0.30.71.350.75
tagforge:storage_blocks/unobtainium0.950.8225
tagforge:storage_blocks/vibranium0.150.7584
tagforge:storage_blocks/zinc0.510.771.411
Reactor Moderators (2024)
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