Mark I
E799459
Mark I is a General Electric-designed boiling water reactor containment system characterized by a compact, pressure-suppression torus configuration used in several nuclear power plants worldwide.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mark I canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9446803 — 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: Mark I Context triple: [Fukushima Daiichi Unit 2, containmentType, Mark I]
-
A.
Mark I
Mark I is the first crude, improvised Iron Man armor suit built by Tony Stark in captivity, serving as the prototype for all subsequent Iron Man armors.
-
B.
Mark I tank
The Mark I tank was the world’s first operational armored fighting vehicle, introduced by Britain during World War I to break the stalemate of trench warfare.
-
C.
Mark II
Mark II is Tony Stark’s early silver-colored Iron Man armor prototype that served as the basis for later, more advanced suits.
-
D.
Mark I trains
Mark I trains were the original streamlined monorail vehicles introduced at Disneyland, showcasing mid-20th-century futuristic design and serving as an early icon of modern theme park transportation.
-
E.
Mark I armor
The Mark I armor is Tony Stark’s first crude, improvised Iron Man suit, built in captivity and serving as the prototype for all subsequent Iron Man armors.
- 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: Mark I Target entity description: Mark I is a General Electric-designed boiling water reactor containment system characterized by a compact, pressure-suppression torus configuration used in several nuclear power plants worldwide.
-
A.
Mark I
Mark I is the first crude, improvised Iron Man armor suit built by Tony Stark in captivity, serving as the prototype for all subsequent Iron Man armors.
-
B.
Mark I tank
The Mark I tank was the world’s first operational armored fighting vehicle, introduced by Britain during World War I to break the stalemate of trench warfare.
-
C.
Mark II
Mark II is Tony Stark’s early silver-colored Iron Man armor prototype that served as the basis for later, more advanced suits.
-
D.
Mark I trains
Mark I trains were the original streamlined monorail vehicles introduced at Disneyland, showcasing mid-20th-century futuristic design and serving as an early icon of modern theme park transportation.
-
E.
Mark I armor
The Mark I armor is Tony Stark’s first crude, improvised Iron Man suit, built in captivity and serving as the prototype for all subsequent Iron Man armors.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
boiling water reactor containment system
ⓘ
nuclear reactor containment design ⓘ |
| belongsToSeries | GE BWR containment Mark series NERFINISHED ⓘ |
| contrastedWith |
Mark II containment
ⓘ
Mark III containment ⓘ large dry containment ⓘ |
| countryOfUse |
Japan
NERFINISHED
ⓘ
United States of America ⓘ
surface form:
United States
several other countries ⓘ |
| designer | General Electric NERFINISHED ⓘ |
| developedBy | General Electric Nuclear Energy NERFINISHED ⓘ |
| followedBy |
Mark II
NERFINISHED
ⓘ
Mark III NERFINISHED ⓘ |
| hasComponent |
drywell
ⓘ
suppression pool ⓘ torus-shaped suppression pool ⓘ vent pipes from drywell to suppression pool ⓘ wetwell ⓘ |
| hasConfiguration | pressure-suppression containment ⓘ |
| hasCriticism | limited margin for pressure buildup in severe accidents ⓘ |
| hasDesignElement |
reinforced concrete secondary containment structures
ⓘ
steel primary containment structure ⓘ |
| hasDesignGoal |
provide pressure suppression capability
ⓘ
reduce containment size and cost ⓘ |
| hasFeature |
compact containment volume
ⓘ
pressure-suppression torus ⓘ wetwell and drywell arrangement ⓘ |
| hasMitigationMeasure |
filtered vent systems
ⓘ
hardened containment vent systems ⓘ |
| hasRegulatoryAttention | true ⓘ |
| hasRiskConcern |
potential for hydrogen accumulation
ⓘ
vulnerability to severe core damage events ⓘ |
| hasShape | compact torus configuration ⓘ |
| introducedAs | early generation BWR containment design ⓘ |
| manufacturer | General Electric NERFINISHED ⓘ |
| notableEventAssociation | Fukushima Daiichi nuclear disaster NERFINISHED ⓘ |
| precededBy | early prototype BWR containments ⓘ |
| pressureSuppressionMethod | steam condensation in suppression pool ⓘ |
| primaryFunction |
containment of radioactive materials in accident conditions
ⓘ
pressure suppression during loss-of-coolant accidents ⓘ |
| reactorType | boiling water reactor ⓘ |
| safetyEnhancement | post-Fukushima backfit modifications in several plants ⓘ |
| safetyObjective | limit release of fission products during accidents ⓘ |
| typicalApplication | BWR units of small to medium electrical output ⓘ |
| usedIn |
boiling water reactor nuclear power plants
ⓘ
commercial nuclear power plants ⓘ |
| usedWorldwide | true ⓘ |
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: Mark I Description of subject: Mark I is a General Electric-designed boiling water reactor containment system characterized by a compact, pressure-suppression torus configuration used in several nuclear power plants worldwide.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.