Definition & axiom
⚠ Conflicts with the ISO 15926-4 primary definition
Label (EN)
separator
Label (PT-BR)
Definition (EN)
Definition (PT-BR)
Semi-formal axiom (Aristotelian)
Axiom type
LLM classification basis: function-based → ≡
The separator concept is consistently defined across all sources by its separating function - ISO 15926 explicitly states it has 'capability of SEPARATING', CFIHOS defines it as 'intended to separate different types of substances', and OnePetro describes it as 'designed to facilitate the separation'. The identity is given by the SeparationFunction it realizes, regardless of the physical mechanism (gravity, centrifugal, electrical, etc.) used to achieve separation.
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
SeparationFunction → SeparationProcess ⊑ MechanicalSeparation
▼
COPI-Core operation
MechanicalSeparation via process parent MechanicalSeparation
LLM rationale:
The identity-giving function is the separation of different substances or phases from a mixed stream. This is the core capability that makes a separator distinct from other process equipment like pumps (which move fluids) or heat exchangers (which transfer heat).
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Expert review
2
Genus Proximus
✓ done
Vessel · 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:
From the parent candidates, 'vessel' (CFIHOS) is the most specific and ontologically correct genus. Separators are typically cylindrical or spherical vessels (per SLB definition) that contain the separation process. While 'ProcessEquipment' and 'FunctionalObject' are broader categories, and 'Static Equipment' is too general, 'vessel' captures the essential containment structure. Vessel is not yet enriched in our ontology but represents the appropriate level of specificity - more specific than Assembly but more precise than generic ProcessEquipment.
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Expert review
3
Differentia Specifica
✓ done
∃bearerOf.SeparationFunction
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Conditions that distinguish
Separator
from sibling classes under genus
Vessel.
Only what is not already entailed by the genus.
Differentia expression
Differentia (natural language)
LLM rationale:
The differentia is solely the SeparationFunction since this is what distinguishes separators from all other vessel types. The genus Vessel already provides the basic containment structure and inlet/outlet capabilities.
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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:
These are the minimal parts required for any separation function to occur - an inlet for mixed stream, chamber for separation process, and outlet(s) for separated phases. Specific separation mechanisms (internals, plates, etc.) vary by subtype.
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Expert review
5
Process Participation Signature ⟨I, O, T⟩
✓ done
PortionOfFluid → PortionOfFluid
▼
Inputs (I)
Outputs (O)
Transformation (T)
LLM rationale:
The fundamental signature is one mixed input stream becoming multiple output streams with different phase or compositional characteristics. This distinguishes separators from mixers (opposite transformation) and reactors (chemical transformation).
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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
0 of 10 selected
▼
Select which CFIHOS/DEXPI properties inhere in every instance of Separator as
bfo:Quality subclasses.
Each selected property →
:SeparatorQuality ⊑ bfo:Quality, inheres in :Separator
Custom axioms
none
▼
Axioms not produced by the pipeline. Each is appended verbatim as an
rdfs:subClassOf restriction on Separator.
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 (4)
SEPARATOR — ClassOfFunctionalObject
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cfihos V2.0
separator — TagAndEquipmentClass
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separator
Definition text hidden (copyrighted standard) — sign in to view, or follow the source link above.
Separator
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Provenance tiers (6)
Sources the pipeline cited while building this entry. Verbatim = the quote was copied word-for-word from that source; summary = paraphrased.
standard · verbatim
standard · verbatim
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 12 · claude-sonnet-4-20250514
Created 2026-04-09 17:12
Updated 2026-09-08 12:26
