Definition & axiom
⚠ Conflicts with the ISO 15926-4 primary definition
Label (EN)
centrifugal compressor casing
Label (PT-BR)
Definition (EN)
Definition (PT-BR)
Semi-formal axiom (Aristotelian)
Axiom type
LLM classification basis: structure-based → ⊑
This concept is defined primarily by its physical configuration and intended mechanical compatibility with centrifugal compressor mechanisms, not by a unique function distinct from general casings.
Validation status
Why primitive (necessary only)
Reviewer notes
FOL theory & disjointness
First-order logic theory (generated)
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Disjoint with
▸
Expert review
Axiomatization steps
1
Identity-Giving Function
✓ done
⚠ not anchored
EnclosureFunction → EnclosureProcess
▼
COPI-Core operation
⚠ Process parent
PlannedProcess reaches no COPI-Core operation, and no gap (out of scope / coverage gap) is recorded.
LLM rationale:
The function is the same as any casing - to provide enclosure and protection. The 'centrifugal compressor' specification indicates intended application/compatibility, not a functionally distinct enclosure type.
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Expert review
2
Genus Proximus
✓ done
Casing · Assembly
▼
Genus (genus proximum)
Most specific superclass — may be a domain class like "Valve" or an IOF-Core root.
BFO/IOF-Core Root
bfo:Object branch
bfo:ObjectAggregate branch
bfo:ImmaterialEntity branch
LLM rationale:
The definition explicitly states this is a subtype of COMPRESSOR CASING, and the already-enriched classes show 'casing' as a defined class with EnclosureFunction. This is the most specific appropriate superclass.
▸
Expert review
3
Differentia Specifica
✓ done
∃intendedFor.CentrifugalCompressor
▼
Conditions that distinguish
Centrifugal Compressor Casing
from sibling classes under genus
Casing.
Only what is not already entailed by the genus.
Differentia expression
Differentia (natural language)
LLM rationale:
The differentia is the specific geometric and structural design compatibility with centrifugal compressor internals - the casing must accommodate rotating impellers, volute chambers, and radial flow patterns rather than other compressor architectures.
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Expert review
4
Necessary Parts
✓ done
no necessary parts
▼
Consider part-whole relations beyond subsumption:
hasComponentPartAtAllTimes (universal, structurally essential)
· hasComponentPartAtSomeTime (contingent, optional component)
LLM rationale:
No component terms are provided in the source standards, and the definition is too generic to identify universal necessary parts beyond those already provided by the casing genus.
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Expert review
5
Process Participation Signature ⟨I, O, T⟩
✓ done
CentrifugalCompressor → CentrifugalCompressor
▼
Inputs (I)
Outputs (O)
Transformation (T)
LLM rationale:
The signature reflects the enclosure function - taking compressor internals and providing them with protective containment. This grounds disjointness with other equipment casings designed for different internal mechanisms.
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Expert review
More
Alternative labels
none
▼
Synonyms / alternative labels (comma-separated) — skos:altLabel
Language auto-detected on export (PT if the label contains accents, EN otherwise).
Properties as BFO qualities
no CFIHOS/DEXPI properties
▼
No CFIHOS/DEXPI properties found for this cluster.
Custom axioms
none
▼
Axioms not produced by the pipeline. Each is appended verbatim as an
rdfs:subClassOf restriction on Centrifugal Compressor Casing.
Write the restriction block in Turtle syntax (without the leading
rdfs:subClassOf).
Example: [ owl:onProperty :hasPart ; owl:someValuesFrom :Wellhead ]
Cross-standard divergences
none detected yet
▼
Click "Detect divergences" to analyse cross-standard disagreements for this cluster.
Source Definitions (1)
CENTRIFUGAL COMPRESSOR CASING — ClassOfInanimatePhysicalObject
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Provenance tiers (1)
Sources the pipeline cited while building this entry. Verbatim = the quote was copied word-for-word from that source; summary = paraphrased.
Linked competency questions
- open What is a centrifugal compressor casing?
- open Is a centrifugal compressor casing a necessary component of every centrifugal compressor?
OWL/Turtle preview
Download .ttl
Numeric
COPI_* IRIs from copi-iri-map.tsv, with the readable name as a trailing comment. Names not yet in the map stay readable.
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ID 391 · claude-sonnet-4-20250514
Created 2026-05-04 18:27
Updated 2026-09-08 12:26
