Special Power Excursion Reactor Test series
E99198
The Special Power Excursion Reactor Test (SPERT) series was a set of experimental nuclear reactors used in the mid-20th century to study reactor safety and behavior under rapid power excursions.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Special Power Excursion Reactor Test series canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T854085 — 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: Special Power Excursion Reactor Test series Context triple: [Idaho National Engineering Laboratory, hasFacility, Special Power Excursion Reactor Test series]
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A.
D Reactor
D Reactor was one of the early plutonium production reactors at the Hanford Site in Washington, built during the Manhattan Project to support the U.S. nuclear weapons program.
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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.
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C.
K-East Reactor
K-East Reactor was one of the plutonium production reactors at the Hanford Site in Washington State, built during the Cold War to support the U.S. nuclear weapons program.
-
D.
N Reactor
N Reactor was a dual-purpose plutonium production and power-generating nuclear reactor at the Hanford Site in Washington, notable for its graphite-moderated, water-cooled design and role in the U.S. Cold War weapons program.
-
E.
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.
- 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: Special Power Excursion Reactor Test series Target entity description: The Special Power Excursion Reactor Test (SPERT) series was a set of experimental nuclear reactors used in the mid-20th century to study reactor safety and behavior under rapid power excursions.
-
A.
D Reactor
D Reactor was one of the early plutonium production reactors at the Hanford Site in Washington, built during the Manhattan Project to support the U.S. nuclear weapons 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.
K-East Reactor
K-East Reactor was one of the plutonium production reactors at the Hanford Site in Washington State, built during the Cold War to support the U.S. nuclear weapons program.
-
D.
N Reactor
N Reactor was a dual-purpose plutonium production and power-generating nuclear reactor at the Hanford Site in Washington, notable for its graphite-moderated, water-cooled design and role in the U.S. Cold War weapons program.
-
E.
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.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
experimental nuclear reactor
ⓘ
experimental nuclear reactor ⓘ experimental nuclear reactor ⓘ experimental nuclear reactor ⓘ experimental nuclear reactor program ⓘ reactor safety research program ⓘ |
| coolant | light water ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| dataUsedBy |
nuclear regulatory bodies
ⓘ
reactor designers ⓘ safety analysts ⓘ |
| designedFor |
development of reactor safety criteria
ⓘ
safety analysis code validation ⓘ |
| endTime | 1960s ⓘ |
| era | Cold War ⓘ |
| field |
nuclear engineering
ⓘ
nuclear safety ⓘ reactor physics ⓘ |
| fuelType | low-enriched uranium ⓘ |
| hasPart |
SPERT-I
ⓘ
SPERT-II ⓘ SPERT-III ⓘ SPERT-IV ⓘ |
| location |
Idaho
ⓘ
Idaho National Engineering Laboratory ⓘ
surface form:
National Reactor Testing Station
|
| locationCountry |
United States of America
ⓘ
surface form:
United States
|
| moderator | light water ⓘ |
| notableOutcome |
data for reactor safety standards
ⓘ
improved understanding of prompt critical excursions ⓘ |
| operator |
United States Atomic Energy Commission
ⓘ
surface form:
U.S. Atomic Energy Commission
|
| partOf |
Special Power Excursion Reactor Test series
self-linksurface differs
ⓘ
Special Power Excursion Reactor Test series self-linksurface differs ⓘ Special Power Excursion Reactor Test series self-linksurface differs ⓘ Special Power Excursion Reactor Test series self-linksurface differs ⓘ |
| purpose |
examine reactor transient response
ⓘ
investigate behavior under rapid power excursions ⓘ study reactor safety ⓘ |
| safetyFocus |
consequences of control rod ejection and withdrawal errors
ⓘ
reactor stability under rapid reactivity insertions ⓘ |
| sponsor | United States government ⓘ |
| startTime | 1950s ⓘ |
| testType |
power excursion experiments
ⓘ
reactor transient tests ⓘ |
| usedIn | design of commercial power reactor safety systems ⓘ |
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: Special Power Excursion Reactor Test series Description of subject: The Special Power Excursion Reactor Test (SPERT) series was a set of experimental nuclear reactors used in the mid-20th century to study reactor safety and behavior under rapid power excursions.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
Special Power Excursion Reactor Test series
→
partOf
→
Special Power Excursion Reactor Test series
self-linksurface differs
ⓘ
subject surface form:
SPERT-I
Special Power Excursion Reactor Test series
→
partOf
→
Special Power Excursion Reactor Test series
self-linksurface differs
ⓘ
subject surface form:
SPERT-II
Special Power Excursion Reactor Test series
→
partOf
→
Special Power Excursion Reactor Test series
self-linksurface differs
ⓘ
subject surface form:
SPERT-III
Special Power Excursion Reactor Test series
→
partOf
→
Special Power Excursion Reactor Test series
self-linksurface differs
ⓘ
subject surface form:
SPERT-IV