Heysham 1 nuclear power station
E226802
Heysham 1 nuclear power station is a twin-reactor advanced gas-cooled nuclear power facility located on the Lancashire coast of England, generating electricity for the UK grid.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Heysham 2 nuclear power station | 2 |
| Heysham 1 Reactor 1 | 1 |
| Heysham 1 Reactor 2 | 1 |
| Heysham 1 nuclear power station canonical | 1 |
| Heysham Nuclear Power Station | 1 |
| Heysham nuclear power stations | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2028229 — 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: Heysham 1 nuclear power station Context triple: [Heysham, hasNearby, Heysham 1 nuclear power station]
-
A.
Didcot Power Station
Didcot Power Station is a large former coal- and oil-fired power station in Oxfordshire, England, notable for its distinctive cooling towers and prominent role in the UK’s electricity generation before its decommissioning.
-
B.
Agecroft power station
Agecroft power station was a coal-fired power station in Pendlebury, Greater Manchester, that operated for much of the 20th century and played a significant role in the region’s industrial energy supply.
-
C.
Liddell Power Station
Liddell Power Station is a large coal-fired power plant in New South Wales, Australia, long serving as a major source of electricity generation before its planned closure as part of the country’s energy transition.
-
D.
Aberthaw Power Station site
Aberthaw Power Station site is the former location of a major coal-fired power station on the South Wales coast, now undergoing redevelopment following its decommissioning.
-
E.
Olidan power station
Olidan power station is one of Sweden’s oldest large-scale hydroelectric power plants, located in Trollhättan and historically important for the country’s industrial electrification.
- 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: Heysham 1 nuclear power station Target entity description: Heysham 1 nuclear power station is a twin-reactor advanced gas-cooled nuclear power facility located on the Lancashire coast of England, generating electricity for the UK grid.
-
A.
Didcot Power Station
Didcot Power Station is a large former coal- and oil-fired power station in Oxfordshire, England, notable for its distinctive cooling towers and prominent role in the UK’s electricity generation before its decommissioning.
-
B.
Agecroft power station
Agecroft power station was a coal-fired power station in Pendlebury, Greater Manchester, that operated for much of the 20th century and played a significant role in the region’s industrial energy supply.
-
C.
Liddell Power Station
Liddell Power Station is a large coal-fired power plant in New South Wales, Australia, long serving as a major source of electricity generation before its planned closure as part of the country’s energy transition.
-
D.
Aberthaw Power Station site
Aberthaw Power Station site is the former location of a major coal-fired power station on the South Wales coast, now undergoing redevelopment following its decommissioning.
-
E.
Olidan power station
Olidan power station is one of Sweden’s oldest large-scale hydroelectric power plants, located in Trollhättan and historically important for the country’s industrial electrification.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
advanced gas-cooled reactor power station
ⓘ
nuclear power station ⓘ |
| adjacentTo |
Heysham 2 nuclear power station
ⓘ
linked to:
Heysham 1 nuclear power station
|
| connectsTo | British electricity transmission network ⓘ |
| coolant | carbon dioxide gas ⓘ |
| country | United Kingdom ⓘ |
| designFamily |
AGR (Advanced Gas-cooled Reactor)
ⓘ
linked to:
Advanced Gas-cooled Reactor
|
| energySource | nuclear fission ⓘ |
| fuelCladding | stainless steel ⓘ |
| fuelType |
low-enriched uranium
ⓘ
uranium dioxide ⓘ |
| gridCodeCompliance | Great Britain Grid Code ⓘ |
| gridConnectionType | high-voltage transmission lines ⓘ |
| gridServed |
National Grid (Great Britain)
ⓘ
linked to:
National Grid
|
| hasBackupPower | diesel generators ⓘ |
| hasContainment | pressure vessel and concrete structures ⓘ |
| hasControlRoom | central control room ⓘ |
| hasCoolingSystem | seawater cooling ⓘ |
| hasEmergencyPlanningZone | off-site emergency planning area ⓘ |
| hasFacilityType | twin-reactor station ⓘ |
| hasReactorBuilding | reactor building for each unit ⓘ |
| hasSpentFuelManagement | on-site spent fuel storage ⓘ |
| hasTurbineHall | steam turbine generators ⓘ |
| industry | nuclear power industry ⓘ |
| locatedIn |
England
ⓘ
Heysham ⓘ Lancashire ⓘ North West England ⓘ |
| locatedOn | Lancashire coast ⓘ |
| moderator | graphite ⓘ |
| near | Morecambe Bay ⓘ |
| numberOfReactors | 2 ⓘ |
| operator | EDF Energy ⓘ |
| owner | EDF Energy ⓘ |
| partOf | UK civil nuclear power programme ⓘ |
| primaryCircuit | gas-cooled ⓘ |
| purpose | electricity generation ⓘ |
| reactorGeneration | Generation II reactor ⓘ |
| reactorType | Advanced Gas-cooled Reactor ⓘ |
| reactorUnit |
Heysham 1 Reactor 1
ⓘ
linked to:
Heysham 1 nuclear power station
Heysham 1 Reactor 2 ⓘ
linked to:
Heysham 1 nuclear power station
|
| regulator | Office for Nuclear Regulation ⓘ |
| safetySystem | containment and shutdown systems ⓘ |
| secondaryCircuit | steam cycle ⓘ |
| serves |
United Kingdom electricity grid
ⓘ
linked to:
British electricity supply industry
|
| sitedOn | coastal site ⓘ |
| status | in operation ⓘ |
| subjectTo |
UK nuclear safety regulations
ⓘ
environmental permitting regulations ⓘ |
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: Heysham 1 nuclear power station Description of subject: Heysham 1 nuclear power station is a twin-reactor advanced gas-cooled nuclear power facility located on the Lancashire coast of England, generating electricity for the UK grid.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Heysham 1 nuclear power station
linked to: Heysham 1 nuclear power station
linked to: Heysham 1 nuclear power station
linked to: Heysham 1 nuclear power station