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Mekanism Fission Reactor | ATM10

The Fission Reactor is a multiblock structure, in the Mekanism mod, used to generate large amounts of power by burning nuclear fuel. It produces heat which converts water into steam for power generation, and generates nuclear waste as a by-product.

 

Requirements

 

Reactor Components

  • Fission Reactor Casing
  • Fission Reactor Port
  • Fission Fuel Assembly
  • Control Rod Assembly
  • Reactor Glass (optional)

 

Supporting Systems

 

Coolant Supply

A constant water source is required. Options include:

  • Sink (recommended)
  • Mechanical Pipes (the longer the pipes, the more water is available to pump into the multiblock)
  • Eternal Water Block (EvilCraft)

Fuel Production

Fission Fuel must be produced through a chemical chain:

Uranium → Uranium Hexafluoride → Fission Fuel

Required machines:

  • Chemical Oxidizer
  • Chemical Infuser
  • Isotopic Centrifuge

Waste Handling

  • Pressurized Tubes
  • Radioactive Waste Barrel (temporary storage)

 

Structure

 

Construction Steps

 

1. Build the Outer Casing

To begin, construct a 5×5×5 hollow cube using Fission Reactor Casing. 5x5x5 is the smallest a Fission Reactor can be.

2. Install Internal Components

Inside the structure:

  • Place Fission Fuel Assemblies vertically
  • Place Control Rod Assemblies directly on top of each fuel assembly

3. Add Ports

Install the following ports on the reactor casing:

  • Fuel Input Port
  • Coolant Input Port
  • Steam Output Port
  • Waste Output Port

Additional ports can be added as needed.

4. Optional: Reactor Glass

Replace casing blocks with Reactor Glass for visibility into the reactor interior. The corners of the reactor must be casing blocks to allow for the multiblock to take shape.

 

Setup

 

Connections

Connect each port on the reactor casing to its corresponding system using Mechanical Pipes or Pressurized Tubes as appropriate.

Port Connection
Coolant Input Port Connect to your water supply. Ensure constant flow at all times.
Fuel Input Port Pipe Fission Fuel in from your fuel production chain.
Steam Output Port Extract steam and route it to an Industrial Turbine for power generation.
Waste Output Port Extract nuclear waste continuously. Store in Radioactive Waste Barrels or process further.

 

Activation

  1. Enable the reactor.
  2. Confirm water is flowing.
  3. Confirm waste output is connected.

 

Power Increase

Gradually increase the burn rate. Increasing it too fast can cause the reactor to explode.

 

  • Temperature: below 800 K
  • Burn Rate: 0.5–2.0 mB/t (early setup)

 

Power Generation

 

Industrial Turbine (Recommended)

  • Converts steam into energy efficiently
  • Required for optimal performance

Without a turbine, most generated energy is wasted.

 

Safety

 

Meltdown Causes

  • Insufficient coolant
  • Excessive burn rate
  • Waste backup
  • Blocked output systems

 

Safety Guidelines

  • Maintain constant water supply
  • Ensure waste is continuously removed
  • Increase burn rate gradually
  • Monitor reactor temperature

 

Scaling

 

Increase Output

  • Increase burn rate slowly
  • Add more fuel assemblies
  • Expand reactor size (e.g. 7×7×7 or larger)

 

Common Mistakes

 

  • Activating reactor at high burn rate
  • Failing to supply enough coolant
  • Ignoring waste management
  • Not using a turbine

 

Recommended Starter Setup

 

  • 5×5×5 reactor
  • 4–6 fuel assemblies
  • Burn rate ~1.0 mB/t
  • Connected industrial turbine
  • Infinite water source
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