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     | Input1Name  = Construction Parts IV
     | Input1Name  = Construction Parts IV
     | Input1Qty  = 1500
     | Input1Qty  = 1500
     | Input2Name  = Electronics III
     | Input2Name  = Titanium Alloy
     | Input2Qty  = 200
     | Input2Qty  = 200
    | Input3Name  = Electronics III
    | Input3Qty  = 200
   }}
   }}
| Workers      = 200
| Workers      = 200
| Electricity  = None
| Electricity  = None
| MaintenanceIII = 36
| MaintenanceIII = 43
| Footprint    = 45x21*
| Footprint    = 45x21*
| BoostByUnity  = no
| BoostByUnity  = no
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| Variants      = [[Nuclear Reactor]]</br>[[Nuclear Reactor II]]
| Variants      = [[Nuclear Reactor]]</br>[[Nuclear Reactor II]]
}}
}}
{{stub}}
The '''Fast Breeder Reactor''' is a machine that generates large amounts of {{infoicon|Steam (Super)|new=yes}} from {{infoicon|Water}} and {{infoicon|Core Fuel|new=yes}} for use in generators. And also, the reactor can enrich {{infoicon|Blanket Fuel|new=yes}} to {{infoicon|Blanket Fuel (Enriched)|new=yes}}, which is used in the production of {{infoicon|Core Fuel|new=yes}}. Considering the lower process, produced {{infoicon|Blanket Fuel (Enriched)|text=Blanket Fuels (Enriched)|new=yes}} are more than spent {{infoicon|Core Fuel|plural=s|new=yes}}.


Power is generated by passing the output {{infoicon|Steam (Super)|new=yes}} through [[Super-pressure Turbine]]s, [[High-pressure Turbine]]s, and [[Low-pressure Turbine]]s with their output shaft connected to [[Power Generator]]s, typically Tier 2 variants of each. A majority of the Water can subsequently be recovered for reuse using a [[Cooling Tower (Large)]].
The '''Fast Breeder Reactor''' is a machine that generates large amounts of {{infoicon|SteamSp|text=Steam (Super)|link=Steam (Super)|new=yes}} from {{infoicon|Water}} and {{infoicon|Core Fuel|new=yes}} for use in generators. The reactor can also enrich {{infoicon|Blanket Fuel|new=yes}} to {{infoicon|Blanket Fuel (Enriched)|new=yes}}, which is used in the production of {{infoicon|Core Fuel|new=yes}} and other nuclear products.
Generated {{infoicon|Steam (Super)|new=yes}} can be also used to [[Thermal Desalinator|desalinate]] {{infoicon|Seawater}} and produce {{infoicon|Hydrogen}}. These two recipes has better energy efficiency than power generation.
 
Because of this, it is only necessary to produce enough initial {{infoicon|Core Fuel|plural=|new=yes}} from a [[Chemical Plant II|Chemical plant II]] to begin the loop, as long as you are recycling the spent core fuel and enriched blanket fuel. Once this cycle is operating successfully, you will only need to make sure that you continue adding a small amount of {{infoicon|Blanket Fuel|new=yes}}, which can be easily made from a relatively small amount of {{infoicon|Yellow Cake|new=yes}} with no {{Infoicon|Depleted Uranium|new=yes}} byproduct. 
 
Power is generated by passing the output {{infoicon|SteamSp|text=Steam (Super)|link=Steam (Super)|new=yes}} through [[Super-pressure Turbine]]s, [[High-pressure Turbine]]s, and [[Low-pressure Turbine]]s with their output shaft connected to [[Power Generator]]s, typically Tier 2 variants of each. A majority of the Water can subsequently be recovered for reuse using a [[Cooling Tower (Large)]].
Generated {{infoicon|SteamSp|text=Steam (Super)|link=Steam (Super)|new=yes}} can be also used to [[Thermal Desalinator|desalinate]] {{infoicon|Seawater}} and produce {{infoicon|Hydrogen}}.


== Heat Exchange and Overheat==
== Heat Exchange and Overheat==
Line 31: Line 35:
See [[Nuclear Reactor II]]
See [[Nuclear Reactor II]]


== Enrichment of Blanket Fuel ==
== Core and Blanket Fuel ==
Enrichment of the {{infoicon|Blanket Fuel}} has the same cycle time as the main recipe, that is, producing {{infoicon|Steam (Super)|new=yes}} by {{infoicon|Core Fuel|new=yes}}. And, 1.2 units of {{infoicon|Blanket Fuel|plural=s|new=yes}} are enriched per cycle. To sums up, a total recipe of the reactor is following if its power level is X4.
 
=== Core Fuel ===
{{infoicon|Core Fuel|new=yes}} is the primary fuel used by the Fast Breeder Reactor and is required for it to operate. An equal amount of {{infoicon|Core Fuel (Spent)|new=yes}} is produced as the result, which can be reprocessed in a {{infoicon|Nuclear Reprocessing Plant|new=yes}}.
 
{{infoicon|Core Fuel|new=yes}} in a running reactor loop typically does not need to be externally provided. For initiating a loop however a minimum of 40 should be provided so the reactor can begin to work, for which both {{infoicon|Plutonium|new=yes}} and {{infoicon|Enriched Uranium (20%)|new=yes}} can be used.
 
Reprocessing of {{infoicon|Core Fuel (Spent)|new=yes|text=Spent Core Fuel}} returns 75% of the amount as {{infoicon|Core Fuel|new=yes}} alongside a {{infoicon|Fission Product|new=yes}} by-product.
 
=== Blanket Fuel ===
{{infoicon|Blanket Fuel|new=yes}} is an optional input fuel for the reactor. While it does not contribute to power generation, it can be enriched into {{infoicon|Blanket Fuel (Enriched)|new=yes}}, which can in turn be used to produce {{infoicon|Core Fuel|new=yes}} to sustain the reaction or to produce other nuclear products.
 
{{infoicon|Blanket Fuel|new=yes}} is typically produced from {{infoicon|Yellowcake|new=yes}}, though {{infoicon|Depleted Uranium|new=yes}}, {{infoicon|Spent Fuel|new=yes}} and {{infoicon|Spent MOX|new=yes}} as by-products of earlier nuclear power production chains can also be used to produce it.
 
The enrichment of {{infoicon|Blanket Fuel|new=yes}} is optional. The reactor's {{infoicon|SteamSp|text=Steam|link=Steam (Super)|new=yes}} production and {{infoicon|Core Fuel|new=yes}} consumption are not affected if {{infoicon|Blanket Fuel|new=yes}} is not provided or {{infoicon|Blanket Fuel (Enriched)|new=yes}} is not removed.
 
Reprocessing of {{infoicon|Blanket Fuel (Enriched)|new=yes}} returns 75% of the amount as {{infoicon|Blanket Fuel|new=yes}} and the rest as a secondary product of choice.
{| class="wikitable"
!Product
!{{infoicon|Core Fuel|new=yes}}
!{{infoicon|Enriched Uranium (20%)|new=yes}}
!{{infoicon|Plutonium|new=yes}}
|-
|{{infoicon|Blanket Fuel (Enriched)|new=yes|icononly=yes}} not returned as {{infoicon|Blanket Fuel|new=yes|icononly=yes}}
|1
|2
|4
|-
|Product count
|1
|1
|1
|}
 
== Enrichment options ==
The Fast Breeder Reactor has three modes of enrichment:
 
0: Enriches no {{infoicon|Blanket Fuel|new=yes}} and halves {{infoicon|Core Fuel|new=yes}} consumption. Not recommended unless you have a lot of {{infoicon|Plutonium|new=yes}} to spend.
 
1: Enriches as much {{infoicon|Blanket Fuel|new=yes}} as {{infoicon|Core Fuel|new=yes}} consumed. This mode creates a zero-sum loop where only {{infoicon|Blanket Fuel|new=yes}} needs to be provided and {{infoicon|Fission Product|new=yes}} to be removed, and is ideal for power generation.
 
3: Enriches trice as much {{infoicon|Blanket Fuel|new=yes}} as {{infoicon|Core Fuel|new=yes}} spent and cuts  {{infoicon|SteamSp|text=Steam|link=Steam (Super)|new=yes}} production by 75%. Used to produce {{infoicon|Plutonium|new=yes}} and {{infoicon|Enriched Uranium (20%)|new=yes}} for space-related parts.
 
Below are the recipes for all three operating modes at 1x and 4x reactor speed.<!--
 
 
-->
 
{{recipe draw
{{recipe draw
   | Input1Name  = Water
   | Input1Name  = Water
   | Input1Qty  = 96
   | Input1Qty  = 96
   | Input2Name  = Core Fuel
   | Input2Name  = CoreFuel
   | Input2Qty  = 1
   | Input2Qty  = 2
  | Input3Name  = Blanket Fuel
   | Time        = 60
  | Input3Qty  = 1.2
   | Output1Name = SteamSp
   | Time        = 15
   | Output1Name = Steam (High)
   | Output1Qty  = 96
   | Output1Qty  = 96
   | Output2Name = Core Fuel (Spent)
   | Output2Name = CoreFuelDirty
   | Output2Qty  = 1
   | Output2Qty  = 2
  | Output3Name = Blanket Fuel (Enriched)
}}{{recipe draw
  | Output3Qty  = 1.2
}}<!--
 
 
-->{{recipe define
   | Input1Name  = Water
   | Input1Name  = Water
   | Input1Qty  = 96
   | Input1Qty  = 96
   | Input2Name  = Core Fuel
   | Input2Name  = CoreFuel
   | Input2Qty  = 1
   | Input2Qty  = 4
   | Time        = 15
  | Input3Name  = BlanketFuel
   | Output1Name = Steam (High)
  | Input3Qty  = 4
   | Time        = 60
   | Output1Name = SteamSp
   | Output1Qty  = 96
   | Output1Qty  = 96
   | Output2Name = Core Fuel (Spent)
   | Output2Name = CoreFuelDirty
   | Output2Qty  = 1
   | Output2Qty  = 4
}}{{recipe define
  | Output3Name = BlanketFuelEnriched
  | Output3Qty  = 4
}}{{recipe draw
  | Input1Name  = Water
  | Input1Qty  = 24
  | Input2Name  = CoreFuel
  | Input2Qty  = 4
  | Input3Name  = BlanketFuel
  | Input3Qty  = 12
  | Time        = 60
  | Output1Name = SteamSp
  | Output1Qty  = 24
  | Output2Name = CoreFuelDirty
  | Output2Qty  = 4
  | Output3Name = BlanketFuelEnriched
  | Output3Qty  = 12
}}{{recipe draw
   | Input1Name  = Water
   | Input1Name  = Water
   | Input1Qty  = 96
   | Input1Qty  = 384
   | Input2Name  = Core Fuel
   | Input2Name  = CoreFuel
   | Input2Qty  = 1
   | Input2Qty  = 8
   | Time        = 20
   | Time        = 60
   | Output1Name = Steam (High)
   | Output1Name = SteamSp
   | Output1Qty  = 96
   | Output1Qty  = 384
   | Output2Name = Core Fuel (Spent)
   | Output2Name = CoreFuelDirty
   | Output2Qty  = 1
   | Output2Qty  = 8
}}{{recipe define
}}{{recipe draw
   | Input1Name  = Water
   | Input1Name  = Water
   | Input1Qty  = 96
   | Input1Qty  = 384
   | Input2Name  = Core Fuel
   | Input2Name  = CoreFuel
   | Input2Qty  = 1
   | Input2Qty  = 16
   | Time        = 30
  | Input3Name  = BlanketFuel
   | Output1Name = Steam (High)
  | Input3Qty  = 16
   | Output1Qty  = 96
   | Time        = 60
   | Output2Name = Core Fuel (Spent)
   | Output1Name = SteamSp
   | Output2Qty  = 1
   | Output1Qty  = 384
}}{{recipe define
   | Output2Name = CoreFuelDirty
   | Output2Qty  = 16
  | Output3Name = BlanketFuelEnriched
  | Output3Qty  = 16
}}{{recipe draw
   | Input1Name  = Water
   | Input1Name  = Water
   | Input1Qty  = 96
   | Input1Qty  = 96
   | Input2Name  = Core Fuel
   | Input2Name  = CoreFuel
   | Input2Qty  = 1
   | Input2Qty  = 16
  | Input3Name  = BlanketFuel
  | Input3Qty  = 48
   | Time        = 60
   | Time        = 60
   | Output1Name = Steam (High)
   | Output1Name = SteamSp
   | Output1Qty  = 96
   | Output1Qty  = 96
   | Output2Name = Core Fuel (Spent)
   | Output2Name = CoreFuelDirty
   | Output2Qty  = 1
   | Output2Qty  = 16
}}{{recipe define
   | Output3Name = BlanketFuelEnriched
   | Input1Name  = Blanket Fuel
   | Output3Qty = 48
   | Input1Unit = ?
  | Time        = 15
  | Output1Name = Blanket Fuel (Enriched)
  | Output1Unit = ?
}}
}}
{{Footer Infobox}}
{{Footer Infobox}}

Latest revision as of 13:23, 5 November 2026

Fast Breeder Reactor

Construction
1500
+
200
+
200
Workers 200
ElectricityNone
Maintenance 43.0 / 60 
Footprint45x21*
Required ResearchFast Breeder Reactor
Boost by UnityNot Available
DesignationPower Production 
VariantsNuclear Reactor
Nuclear Reactor II

The Fast Breeder Reactor is a machine that generates large amounts of Steam (Super) from Water and Core Fuel for use in generators. The reactor can also enrich Blanket Fuel to Blanket Fuel (Enriched), which is used in the production of Core Fuel and other nuclear products.

Because of this, it is only necessary to produce enough initial Core Fuel from a Chemical plant II to begin the loop, as long as you are recycling the spent core fuel and enriched blanket fuel. Once this cycle is operating successfully, you will only need to make sure that you continue adding a small amount of Blanket Fuel, which can be easily made from a relatively small amount of Yellowcake with no Depleted Uranium byproduct.

Power is generated by passing the output Steam (Super) through Super-pressure Turbines, High-pressure Turbines, and Low-pressure Turbines with their output shaft connected to Power Generators, typically Tier 2 variants of each. A majority of the Water can subsequently be recovered for reuse using a Cooling Tower (Large). Generated Steam (Super) can be also used to desalinate Seawater and produce Hydrogen.

Heat Exchange and Overheat

See Nuclear Reactor

Automatic Regulation

See Nuclear Reactor II

Core and Blanket Fuel

Core Fuel

Core Fuel is the primary fuel used by the Fast Breeder Reactor and is required for it to operate. An equal amount of File:CoreFuelSpent.png Core Fuel (Spent) is produced as the result, which can be reprocessed in a Nuclear Reprocessing Plant.

Core Fuel in a running reactor loop typically does not need to be externally provided. For initiating a loop however a minimum of 40 should be provided so the reactor can begin to work, for which both Plutonium and File:EnrichedUranium20Perc.png Enriched Uranium (20%) can be used.

Reprocessing of File:CoreFuelSpent.png Spent Core Fuel returns 75% of the amount as Core Fuel alongside a Fission Product by-product.

Blanket Fuel

Blanket Fuel is an optional input fuel for the reactor. While it does not contribute to power generation, it can be enriched into Blanket Fuel (Enriched), which can in turn be used to produce Core Fuel to sustain the reaction or to produce other nuclear products.

Blanket Fuel is typically produced from Yellowcake, though Depleted Uranium, Spent Fuel and Spent MOX as by-products of earlier nuclear power production chains can also be used to produce it.

The enrichment of Blanket Fuel is optional. The reactor's Steam production and Core Fuel consumption are not affected if Blanket Fuel is not provided or Blanket Fuel (Enriched) is not removed.

Reprocessing of Blanket Fuel (Enriched) returns 75% of the amount as Blanket Fuel and the rest as a secondary product of choice.

Product Core Fuel File:EnrichedUranium20Perc.png Enriched Uranium (20%) Plutonium
not returned as 1 2 4
Product count 1 1 1

Enrichment options

The Fast Breeder Reactor has three modes of enrichment:

0: Enriches no Blanket Fuel and halves Core Fuel consumption. Not recommended unless you have a lot of Plutonium to spend.

1: Enriches as much Blanket Fuel as Core Fuel consumed. This mode creates a zero-sum loop where only Blanket Fuel needs to be provided and Fission Product to be removed, and is ideal for power generation.

3: Enriches trice as much Blanket Fuel as Core Fuel spent and cuts Steam production by 75%. Used to produce Plutonium and File:EnrichedUranium20Perc.png Enriched Uranium (20%) for space-related parts.

Below are the recipes for all three operating modes at 1x and 4x reactor speed.

96
96
2
2
60 
60 
96
96
2
2
96
96
4
4
4
4
60 
60 
96
96
4
4
4
4
24
24
4
4
12
12
60 
60 
24
24
4
4
12
12
384
384
8
8
60 
60 
384
384
8
8
384
384
16
16
16
16
60 
60 
384
384
16
16
16
16
96
96
16
16
48
48
60 
60 
96
96
16
16
48
48

Recipes

Below are all the recipes which this building is capable of producing. Note that some of them may be locked behind Research and not immediately available in your game.

24
24
4
4
12
12
60 
60 
24
24
4
4
12
12
48
48
8
8
24
24
60 
60 
48
48
8
8
24
24
72
72
12
12
36
36
60 
60 
72
72
12
12
36
36
96
96
16
16
48
48
60 
60 
96
96
16
16
48
48
96
96
2
2
60 
60 
96
96
2
2
96
96
4
4
4
4
60 
60 
96
96
4
4
4
4
192
192
4
4
60 
60 
192
192
4
4
192
192
8
8
8
8
60 
60 
192
192
8
8
8
8
288
288
6
6
60 
60 
288
288
6
6
288
288
12
12
12
12
60 
60 
288
288
12
12
12
12
384
384
8
8
60 
60 
384
384
8
8
384
384
16
16
16
16
60 
60 
384
384
16
16
16
16