Create: Atomic by MRH0

Addon to the Create mod by the Create Team.

Minecraft NeoForge 1.21.1

Download

https://www.curseforge.com/minecraft/mc-mods/createatomic

About

Create: Atomic adds Nuclear Reactors and related nuclear content to Minecraft via the Create mod ecosystem.

Content

Materials & Resources

• Uranium Ore - spawns in stone and deepslate variants, requires iron-tier pickaxe
• Raw Uranium / Uranium Ingot / Uranium Nugget
• Refined Uranium Ingot / Refined Uranium Nugget - processed form used in reactor fuel
• Dense Alloy / Dense Alloy Nugget - heavy shielding material
• Plutonium Ingot / Plutonium Nugget - byproduct of reactor operation

Storage Blocks

Craftable from 9 ingots/items and decompress back:

• Uranium Block
• Refined Uranium Block
• Dense Alloy Block
• Plutonium Block

Reactor Components

• Reactor Casing - multi-block structure that forms the reactor body
• Rod Assembly - placed on top of the casing; accepts one rod at a time
• Reactor Redstone Interface - attaches to the casing side; arms/SCRAMs the reactor via redstone
• Steam Turbine - bolts to the reactor face; converts reactor heat into Rotational Force (16 SU/RPM by default)

Reactor Rods

Inserted into Rod Assemblies:

Rod	Power	Hull Capacity	Adjacency Bonus	Fuel Consumption Bonus	Notes
Uranium Fuel Rod	+1		+50%		Depletes after ~2 hours (default)
Plutonium Fuel Rod	+1	−2	+50%	+25%	Accelerates adjacent fuel rods' consumption by 25%; depletes after ~6 hours (default)
Depleted Uranium Fuel Rod					Recycled or smelted for materials
Depleted Plutonium Fuel Rod					Recycled or smelted for materials
Small Control Rod		+2			Absorbs reactor power; SCRAMs on deactivation
Large Control Rod		+5			Absorbs more reactor power; SCRAMs on deactivation
Neutron Reflector			+50%	+10%	Boosts adjacent fuel rods' power; accelerates their consumption by 10%

Hazmat Equipment

• Hazmat Suit (helmet, chestplate, leggings, boots) --> protects against radiation effects when the full set is worn

Radioisotope Heat Generator (RHG)

A passive heat source that slowly decays through three states: Kindled --> Smouldering --> Inert. Decay is random with an average of 2 real-world days per step (configurable).

Reactor Debris

Left behind after a meltdown. Emits radiation. Requires a diamond pickaxe to mine and takes roughly 8× as long to break as obsidian.

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Reactor Mechanics

1. Build a multi-block of Reactor Casings (any rectangular prism shape).
2. Place Rod Assemblies on top of the casing to create rod slots.
3. Insert rods into the assemblies by right-clicking with a rod item.
4. Attach a Reactor Redstone Interface to the side of the casing and send it a redstone signal to arm the reactor.
5. The reactor activates when effective power exceeds hull capacity.
6. Pump water into the casing to keep it cooled - the reactor consumes water while running.
7. Bolt Steam Turbines to the reactor face to generate rotational force.
8. Use a Mechanical Arm to automate swapping depleted rods for fresh ones.

Adjacency: Fuel rods and Neutron Reflectors boost neighboring fuel rods. Each adjacent rod with an adjacency bonus increases a fuel rod's effective power by that bonus (+50% per neighbor by default).

Hull Integrity: If net power (effective fuel − control) exceeds zero while water runs out or heat exceeds safe limits, the reactor takes hull damage. At 0% integrity it melts down.

SCRAM: Removing the redstone signal from the Reactor Redstone Interface causes a SCRAM - control rods insert and the reaction stops.

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Configuration (server config)

Key	Default	Description
fuelRodDuration	144000 ticks (~2 hours)	How long a Uranium Fuel Rod lasts before depleting
plutoniumFuelRodDuration	432000 ticks (~6 hours)	How long a Plutonium Fuel Rod lasts before depleting
meltdownEnabled	true	Whether reactors can melt down; when false the reactor shuts down at 0% hull integrity and self-repairs when cooled
meltdownExplosion	true	Whether a meltdown triggers an explosion
blockRadiationEnabled	true	Whether reactor debris and running reactors emit radiation sickness to nearby entities
radiationEffectEnabled	true	Master switch for all radiation effects
turbineCapacity	16.0 SU/RPM	Stress capacity generated by each Steam Turbine
hullRegenRate	0.5 per lazy tick	Hull integrity regenerated per second when the reactor is fully cooled
rhgDecayDays	2.0 days	Average real-world days per decay step of the Radioisotope Heat Generator