Westinghouse 4-loop PWR
E935605
The Westinghouse 4-loop PWR is a large commercial pressurized water reactor design featuring four primary coolant loops, widely used in nuclear power plants for reliable baseload electricity generation.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Westinghouse 4-loop PWR canonical | 5 |
| Westinghouse 4-loop PWR design | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11615281 — 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: Westinghouse 4-loop PWR Context triple: [Comanche Peak Nuclear Power Plant, reactorModel, Westinghouse 4-loop PWR]
-
A.
Westinghouse 3-loop PWR
The Westinghouse 3-loop PWR is a pressurized water reactor design featuring three primary coolant loops, widely used in commercial nuclear power plants for reliable electricity generation.
-
B.
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.
-
C.
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.
-
D.
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.
-
E.
PM-3A nuclear reactor
The PM-3A nuclear reactor was a small U.S. Navy-built nuclear power plant that supplied electricity and heat to McMurdo Station in Antarctica during the 1960s and early 1970s.
- 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: Westinghouse 4-loop PWR Target entity description: The Westinghouse 4-loop PWR is a large commercial pressurized water reactor design featuring four primary coolant loops, widely used in nuclear power plants for reliable baseload electricity generation.
-
A.
Westinghouse 3-loop PWR
The Westinghouse 3-loop PWR is a pressurized water reactor design featuring three primary coolant loops, widely used in commercial nuclear power plants for reliable electricity generation.
-
B.
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.
-
C.
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.
-
D.
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.
-
E.
PM-3A nuclear reactor
The PM-3A nuclear reactor was a small U.S. Navy-built nuclear power plant that supplied electricity and heat to McMurdo Station in Antarctica during the 1960s and early 1970s.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
commercial nuclear power reactor design
ⓘ
pressurized water reactor design ⓘ |
| application | baseload electricity generation ⓘ |
| containmentType | large dry containment (in many implementations) ⓘ |
| controlMechanism |
chemical shim using boric acid in coolant
ⓘ
control rods ⓘ |
| coolantType | light water ⓘ |
| coolingSystem | closed primary coolant loop ⓘ |
| coreLocation | reactor pressure vessel ⓘ |
| deploymentContext | commercial nuclear power plants ⓘ |
| designer | Westinghouse Electric Company ⓘ |
| designGoal |
high availability
ⓘ
high reliability ⓘ long fuel cycles ⓘ |
| fuelForm | zirconium-alloy clad fuel rods ⓘ |
| fuelType | low-enriched uranium dioxide ⓘ |
| generationCategory | Generation II nuclear power plant design ⓘ |
| geographicalUse | worldwide ⓘ |
| gridRole | reliable baseload power supply ⓘ |
| heatTransferMechanism | primary-to-secondary heat exchange in steam generators ⓘ |
| moderatorType | light water ⓘ |
| neutronSpectrum | thermal ⓘ |
| numberOfPrimaryLoops | 4 ⓘ |
| pressureBoundary | reactor coolant system pressure boundary ⓘ |
| primaryCircuitConfiguration | four-loop ⓘ |
| primaryCoolantPressure | high pressure to prevent boiling ⓘ |
| primaryCoolantSystemComponent |
pressurizer
ⓘ
reactor coolant pump ⓘ steam generator ⓘ |
| reactivityControlMethod |
control rod insertion and withdrawal
ⓘ
soluble boron ⓘ |
| regulatoryCategory | light water reactor ⓘ |
| relatedDesign |
Westinghouse 2-loop PWR
ⓘ
Westinghouse 3-loop PWR ⓘ |
| safetyFeature |
containment building
ⓘ
control rod shutdown system ⓘ emergency core cooling system ⓘ multiple redundant safety systems ⓘ |
| secondarySideWorkingFluid | water-steam ⓘ |
| steamCycleType | indirect steam cycle ⓘ |
| steamGeneratorType | U-tube steam generator ⓘ |
| thermalEfficiencyClass | typical of large PWRs ⓘ |
| thermalPowerClass | large commercial power reactor ⓘ |
| typicalElectricalOutputRange | approximately 900 to 1300 MWe ⓘ |
| typicalFuelCycleLength | about 18 months ⓘ |
| typicalFuelEnrichment | about 3 to 5 percent U-235 ⓘ |
| typicalOperatingTemperature | primary coolant hot leg temperature around 300 degrees Celsius ⓘ |
| usesNeutronReflector | yes, in many implementations ⓘ |
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: Westinghouse 4-loop PWR Description of subject: The Westinghouse 4-loop PWR is a large commercial pressurized water reactor design featuring four primary coolant loops, widely used in nuclear power plants for reliable baseload electricity generation.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Westinghouse 4-loop PWR