BWR-4
E397896
BWR-4 is a General Electric-designed boiling water reactor model widely used in commercial nuclear power plants built during the late 1960s and 1970s.
All labels observed (1)
| Label | Occurrences |
|---|---|
| BWR-4 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T3889397 — 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.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: BWR-4 Context triple: [Hatch Nuclear Power Plant, reactorModel, BWR-4]
-
A.
K15 pressurized water reactor
The K15 pressurized water reactor is a French naval nuclear reactor design used to power modern French aircraft carriers and submarines.
-
B.
K-East Reactor
K-East Reactor was one of the plutonium production reactors at the Hanford Site in Washington State, built during the Cold War to support the U.S. nuclear weapons program.
-
C.
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.
-
D.
S2W nuclear reactor
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.
-
E.
Pressurised water reactor
A pressurised water reactor is a type of nuclear fission reactor that uses high-pressure water as both coolant and neutron moderator to generate heat for producing electricity or naval propulsion.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: BWR-4 Target entity description: BWR-4 is a General Electric-designed boiling water reactor model widely used in commercial nuclear power plants built during the late 1960s and 1970s.
-
A.
K15 pressurized water reactor
The K15 pressurized water reactor is a French naval nuclear reactor design used to power modern French aircraft carriers and submarines.
-
B.
K-East Reactor
K-East Reactor was one of the plutonium production reactors at the Hanford Site in Washington State, built during the Cold War to support the U.S. nuclear weapons program.
-
C.
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.
-
D.
S2W nuclear reactor
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.
-
E.
Pressurised water reactor
A pressurised water reactor is a type of nuclear fission reactor that uses high-pressure water as both coolant and neutron moderator to generate heat for producing electricity or naval propulsion.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
boiling water reactor design
ⓘ
nuclear reactor type ⓘ |
| application | base-load power generation ⓘ |
| commercialDeploymentPeriod |
1970s
ⓘ
late 1960s ⓘ |
| controlRodInsertionDirection | from bottom of core ⓘ |
| controlRodType | neutron-absorbing control blades ⓘ |
| coolant | light water ⓘ |
| coolantBoilingLocation | inside reactor core ⓘ |
| coreCoolingMode | forced circulation ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| designer | General Electric ⓘ |
| fuelCladdingMaterial | zirconium alloy ⓘ |
| fuelForm | ceramic pellets in metal cladding ⓘ |
| fuelType | low-enriched uranium dioxide ⓘ |
| generation | Generation II reactor ⓘ |
| heatTransferMechanism | nucleate boiling in core ⓘ |
| moderator | light water ⓘ |
| neutronAbsorberMaterial |
boron carbide
ⓘ
hafnium ⓘ |
| neutronSpectrum | thermal ⓘ |
| notableDeploymentEra | late 1960s and 1970s build programs ⓘ |
| operatorTrainingRequirement | licensed nuclear reactor operators ⓘ |
| powerControlMethod |
control rod positioning
ⓘ
recirculation flow control ⓘ |
| predecessorDesign | BWR-3 ⓘ |
| pressureVesselType | single large reactor pressure vessel ⓘ |
| primaryUse | commercial electricity generation ⓘ |
| reactorType | boiling water reactor ⓘ |
| recirculationSystemType | internal jet pumps ⓘ |
| regulatoryCategory | light water reactor ⓘ |
| safetySystem |
containment isolation system
ⓘ
core spray system ⓘ emergency core cooling system ⓘ high-pressure coolant injection system ⓘ low-pressure coolant injection system ⓘ |
| steamDryingComponent |
steam dryers
ⓘ
steam separators ⓘ |
| steamGeneration | direct cycle ⓘ |
| steamUse | drives turbine-generator directly ⓘ |
| successorDesign | BWR-5 ⓘ |
| thermalEfficiencyCharacteristic | direct use of reactor steam in turbine ⓘ |
| typicalContainmentType | Mark I containment ⓘ |
| typicalElectricalOutputRange | hundreds of megawatts electric ⓘ |
| typicalFuelCycleLength | about 18 to 24 months ⓘ |
| usedIn | commercial nuclear power plants worldwide ⓘ |
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.
Instruction
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.
Input
Subject: BWR-4 Description of subject: BWR-4 is a General Electric-designed boiling water reactor model widely used in commercial nuclear power plants built during the late 1960s and 1970s.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.