S2W nuclear reactor
E254251
The S2W nuclear reactor was an early U.S. Navy pressurized water reactor design that powered the world’s first operational nuclear-powered submarine, USS Nautilus.
All labels observed (2)
| Label | Occurrences |
|---|---|
| S2W nuclear reactor canonical | 1 |
| U.S. Navy S-series submarine reactor family | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2309212 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
Target entity: S2W nuclear reactor Context triple: [USS Nautilus, powerplant, S2W nuclear reactor]
-
A.
K-West Reactor
K-West Reactor is one of the plutonium production reactors at the Hanford Site in Washington State, historically used to support the U.S. nuclear weapons program.
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B.
X-10 graphite reactor
The X-10 graphite reactor was an early nuclear reactor at Oak Ridge, Tennessee, built during the Manhattan Project as a pilot plant for plutonium production and a key step toward the development of nuclear weapons and nuclear energy.
-
C.
TRIGA research reactor
The TRIGA research reactor is a small, inherently safe nuclear reactor design widely used in universities and research institutions for education, training, and scientific experiments.
-
D.
K Reactor
K Reactor is a decommissioned nuclear production reactor at the Savannah River Site in South Carolina that was used primarily for producing weapons-grade materials during the Cold War.
-
E.
Experimental Breeder Reactor II
Experimental Breeder Reactor II was a sodium-cooled fast breeder nuclear reactor and research facility in Idaho that played a key role in demonstrating advanced reactor safety and fuel cycle technologies.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: S2W nuclear reactor Target entity description: The S2W nuclear reactor was an early U.S. Navy pressurized water reactor design that powered the world’s first operational nuclear-powered submarine, USS Nautilus.
-
A.
K-West Reactor
K-West Reactor is one of the plutonium production reactors at the Hanford Site in Washington State, historically used to support the U.S. nuclear weapons program.
-
B.
X-10 graphite reactor
The X-10 graphite reactor was an early nuclear reactor at Oak Ridge, Tennessee, built during the Manhattan Project as a pilot plant for plutonium production and a key step toward the development of nuclear weapons and nuclear energy.
-
C.
TRIGA research reactor
The TRIGA research reactor is a small, inherently safe nuclear reactor design widely used in universities and research institutions for education, training, and scientific experiments.
-
D.
K Reactor
K Reactor is a decommissioned nuclear production reactor at the Savannah River Site in South Carolina that was used primarily for producing weapons-grade materials during the Cold War.
-
E.
Experimental Breeder Reactor II
Experimental Breeder Reactor II was a sodium-cooled fast breeder nuclear reactor and research facility in Idaho that played a key role in demonstrating advanced reactor safety and fuel cycle technologies.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
naval nuclear reactor
ⓘ
pressurized water reactor ⓘ |
| application | military naval propulsion ⓘ |
| associatedWith |
Hyman G. Rickover
ⓘ
surface form:
Admiral Hyman G. Rickover
|
| coolant | light water ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| designationMeaning_2 | second-generation core design ⓘ |
| designationMeaning_S | submarine platform ⓘ |
| designationMeaning_W | Westinghouse as designer ⓘ |
| designationScheme | S2W ⓘ |
| designedFor | submarine propulsion ⓘ |
| developedBy | Westinghouse Electric Corporation ⓘ |
| developedFor |
United States Navy submarines
ⓘ
surface form:
United States Navy nuclear submarine program
|
| enabledCapability | long-endurance under-ice and blue-water submarine operations ⓘ |
| energySource | nuclear fission ⓘ |
| era | Cold War ⓘ |
| firstCriticalityApproximate | early 1950s ⓘ |
| firstOperationalUseApproximate | mid-1950s ⓘ |
| fuelType | enriched uranium ⓘ |
| heatTransferMedium | water ⓘ |
| historicalSignificance | pioneered practical naval nuclear propulsion ⓘ |
| influenced | later U.S. Navy submarine reactor designs ⓘ |
| installedOn |
USS Nautilus
ⓘ
surface form:
USS Nautilus (SSN-571)
|
| locationOfUse |
United States Navy submarines
ⓘ
surface form:
United States Navy submarine fleet
|
| moderator | light water ⓘ |
| notableFor | powering the world’s first operational nuclear-powered submarine ⓘ |
| notableVessel |
USS Nautilus
ⓘ
surface form:
USS Nautilus (SSN-571)
|
| operator | United States Navy ⓘ |
| partOf |
S2W nuclear reactor
self-linksurface differs
ⓘ
surface form:
U.S. Navy S-series submarine reactor family
|
| powerConversionSystem | steam turbine ⓘ |
| powered |
USS Nautilus
ⓘ
surface form:
USS Nautilus (SSN-571)
|
| primaryUse | marine propulsion ⓘ |
| program | U.S. Navy nuclear propulsion program ⓘ |
| propulsionTypeEnabled | nuclear-powered steam turbine propulsion ⓘ |
| reactorCoolantSystem | pressurized primary loop ⓘ |
| reactorCoreType | light water moderated ⓘ |
| reactorGeneration | second-generation submarine reactor ⓘ |
| reactorType | pressurized water reactor ⓘ |
| safetyConcept | pressurized water reactor containment and shielding ⓘ |
| serviceBranch | United States Navy ⓘ |
| status | retired ⓘ |
| usedFor | extended submerged operations ⓘ |
| usedIn |
USS Nautilus
ⓘ
surface form:
USS Nautilus (SSN-571)
|
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Subject: S2W nuclear reactor Description of subject: The S2W nuclear reactor was an early U.S. Navy pressurized water reactor design that powered the world’s first operational nuclear-powered submarine, USS Nautilus.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.