Thermal Oxide Reprocessing Plant
E813967
The Thermal Oxide Reprocessing Plant is a major nuclear facility at Sellafield in the UK that was used to reprocess spent nuclear fuel from reactors, recovering usable materials such as uranium and plutonium.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Thermal Oxide Reprocessing Plant canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9673197 — 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: Thermal Oxide Reprocessing Plant Context triple: [Sellafield, hasFacility, Thermal Oxide Reprocessing Plant]
-
A.
S-50 thermal diffusion plant
The S-50 thermal diffusion plant was a World War II facility at Oak Ridge used in the Manhattan Project to enrich uranium through thermal diffusion as part of the U.S. atomic bomb program.
-
B.
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.
-
C.
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.
-
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.
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.
- 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: Thermal Oxide Reprocessing Plant Target entity description: The Thermal Oxide Reprocessing Plant is a major nuclear facility at Sellafield in the UK that was used to reprocess spent nuclear fuel from reactors, recovering usable materials such as uranium and plutonium.
-
A.
S-50 thermal diffusion plant
The S-50 thermal diffusion plant was a World War II facility at Oak Ridge used in the Manhattan Project to enrich uranium through thermal diffusion as part of the U.S. atomic bomb program.
-
B.
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.
-
C.
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.
-
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.
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.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
industrial facility
ⓘ
nuclear fuel cycle facility ⓘ nuclear reprocessing plant ⓘ |
| alsoKnownAs | THORP ⓘ |
| associatedWith |
Magnox reprocessing plant at Sellafield
ⓘ
linked to:
Sellafield
Sellafield MOX Plant ⓘ
linked to:
Sellafield
|
| commercialOperationStartDate | 1994 ⓘ |
| commissioningDate | 1994 ⓘ |
| constructionStartDate | 1984 ⓘ |
| country | United Kingdom ⓘ |
| designCapacity | 1200 tonnes of heavy metal per year ⓘ |
| environmentalRegulator |
Environment Agency
ⓘ
linked to:
Environment Agency (England)
|
| fuelTypeReprocessed |
advanced gas-cooled reactor fuel
ⓘ
light water reactor fuel ⓘ thermal oxide fuel ⓘ |
| hasWasteStream |
high-level liquid waste
ⓘ
intermediate-level solid waste ⓘ low-level radioactive waste ⓘ |
| inputMaterial | spent nuclear fuel ⓘ |
| locatedIn |
Cumbria
ⓘ
England ⓘ Sellafield ⓘ United Kingdom ⓘ |
| notableIncident |
1994 leak during commissioning
ⓘ
2005 highly active liquor leak in feed clarification cell ⓘ |
| operator |
British Nuclear Fuels Limited
ⓘ
Sellafield Ltd ⓘ |
| outputMaterial |
high-level radioactive waste
ⓘ
recovered uranium ⓘ separated plutonium ⓘ |
| ownedBy | UK government ⓘ |
| partOf |
Sellafield nuclear complex
ⓘ
linked to:
Sellafield
|
| policyContext |
UK civil nuclear fuel cycle
ⓘ
international spent fuel management services ⓘ |
| processType | aqueous reprocessing ⓘ |
| purpose |
recovery of plutonium from spent fuel
ⓘ
recovery of uranium from spent fuel ⓘ reprocessing spent nuclear fuel ⓘ |
| regulator | Office for Nuclear Regulation ⓘ |
| safetySystem |
multiple containment barriers
ⓘ
remote handling equipment ⓘ |
| servesReactorsIn |
Europe
ⓘ
Japan ⓘ United Kingdom ⓘ |
| shutdownDate | 2018 ⓘ |
| site |
Sellafield nuclear site
ⓘ
linked to:
Sellafield
|
| status |
in post-operational clean-out
ⓘ
permanently shut down ⓘ |
| technology | PUREX process ⓘ |
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: Thermal Oxide Reprocessing Plant Description of subject: The Thermal Oxide Reprocessing Plant is a major nuclear facility at Sellafield in the UK that was used to reprocess spent nuclear fuel from reactors, recovering usable materials such as uranium and plutonium.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.