Molten-Salt Reactor Experiment at Oak Ridge
E360955
The Molten-Salt Reactor Experiment at Oak Ridge was a pioneering 1960s nuclear research reactor that demonstrated the feasibility of using molten salt as both fuel and coolant, significantly advancing concepts for safer and more efficient nuclear power.
All labels observed (3)
How this entity was disambiguated
This entity first appeared as the object of triple T3470725 — 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: Molten-Salt Reactor Experiment at Oak Ridge Context triple: [Alvin M. Weinberg, notableWork, Molten-Salt Reactor Experiment at Oak Ridge]
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A.
Experimental Breeder Reactor II
Experimental Breeder Reactor II was a sodium-cooled fast breeder nuclear reactor and research facility in Idaho that played a key role in demonstrating advanced reactor safety and fuel cycle technologies.
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B.
Experimental Breeder Reactor I
Experimental Breeder Reactor I was the world’s first nuclear reactor to produce usable electricity, marking a major milestone in nuclear power development.
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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.
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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.
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E.
TRIGA research reactor
The TRIGA research reactor is a small, inherently safe nuclear reactor design widely used in universities and research institutions for education, training, and scientific experiments.
- 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: Molten-Salt Reactor Experiment at Oak Ridge Target entity description: The Molten-Salt Reactor Experiment at Oak Ridge was a pioneering 1960s nuclear research reactor that demonstrated the feasibility of using molten salt as both fuel and coolant, significantly advancing concepts for safer and more efficient nuclear power.
-
A.
Experimental Breeder Reactor II
Experimental Breeder Reactor II was a sodium-cooled fast breeder nuclear reactor and research facility in Idaho that played a key role in demonstrating advanced reactor safety and fuel cycle technologies.
-
B.
Experimental Breeder Reactor I
Experimental Breeder Reactor I was the world’s first nuclear reactor to produce usable electricity, marking a major milestone in nuclear power development.
-
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.
TRIGA research reactor
The TRIGA research reactor is a small, inherently safe nuclear reactor design widely used in universities and research institutions for education, training, and scientific experiments.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
experimental nuclear reactor
ⓘ
molten salt reactor ⓘ research reactor ⓘ |
| associatedField |
nuclear engineering
ⓘ
nuclear materials science ⓘ reactor physics ⓘ |
| associatedWith |
Molten-Salt Reactor Experiment at Oak Ridge
self-linksurface differs
ⓘ
surface form:
Oak Ridge molten-salt breeder reactor studies
|
| constructionStart | 1962 ⓘ |
| coolant | molten salt ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| demonstrated |
online refueling capability
ⓘ
stable operation with uranium-233 fuel ⓘ use of molten salt as combined fuel and coolant ⓘ |
| designedBy |
Molten-Salt Reactor Experiment at Oak Ridge
self-linksurface differs
ⓘ
surface form:
Oak Ridge National Laboratory molten-salt reactor program
|
| designedPowerLevel | about 10 megawatts thermal ⓘ |
| endOfOperation | 1969 ⓘ |
| firstCriticality | 1965 ⓘ |
| fuelForm | molten salt ⓘ |
| fuelType |
plutonium-239
ⓘ
uranium-233 ⓘ uranium-235 ⓘ |
| historicalSignificance | pioneering demonstration of molten-salt reactor technology ⓘ |
| influenced |
later molten-salt reactor designs
ⓘ
modern thorium molten-salt reactor concepts ⓘ |
| legacy | key experimental data for molten-salt reactor development ⓘ |
| locatedIn |
Oak Ridge, Tennessee
ⓘ
United States of America ⓘ
surface form:
United States
|
| location | Oak Ridge National Laboratory ⓘ |
| managedBy | United States Atomic Energy Commission ⓘ |
| moderator | graphite ⓘ |
| neutronSpectrum | thermal ⓘ |
| operator | Oak Ridge National Laboratory ⓘ |
| primarySaltBase |
beryllium fluoride
ⓘ
lithium fluoride ⓘ |
| primarySaltComposition | LiF–BeF2–ZrF4–UF4 ⓘ |
| purpose |
demonstrate feasibility of molten salt as fuel and coolant
ⓘ
investigate molten-salt reactor technology for power production ⓘ |
| reactorType | thermal-spectrum molten salt reactor ⓘ |
| researchFocus |
fuel-salt chemistry and corrosion
ⓘ
graphite moderator behavior in molten-salt environment ⓘ thorium fuel cycle ⓘ |
| safetyFeature |
freeze plug drain system for passive shutdown
ⓘ
low operating pressure ⓘ negative temperature coefficient of reactivity ⓘ |
| shutdownYear | 1969 ⓘ |
| startOfOperation | 1965 ⓘ |
| status | permanently shut down ⓘ |
| thermalPower | 7.4 megawatts thermal ⓘ |
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: Molten-Salt Reactor Experiment at Oak Ridge Description of subject: The Molten-Salt Reactor Experiment at Oak Ridge was a pioneering 1960s nuclear research reactor that demonstrated the feasibility of using molten salt as both fuel and coolant, significantly advancing concepts for safer and more efficient nuclear power.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
Molten-Salt Reactor Experiment at Oak Ridge
→
designedBy
→
Molten-Salt Reactor Experiment at Oak Ridge
self-linksurface differs
ⓘ
this entity surface form:
Oak Ridge National Laboratory molten-salt reactor program
Molten-Salt Reactor Experiment at Oak Ridge
→
associatedWith
→
Molten-Salt Reactor Experiment at Oak Ridge
self-linksurface differs
ⓘ
this entity surface form:
Oak Ridge molten-salt breeder reactor studies