Definition & axiom
⚠ Conflicts with the ISO 15926-4 primary definition
Label (EN)
vessel shell
Label (PT-BR)
Definition (EN)
Definition (PT-BR)
Semi-formal axiom (Aristotelian)
Axiom type
LLM classification basis: structure-based → ⊑
The definition identifies vessel shell by its structural role as 'the pressure containing outer part of a vessel' - a physical configuration/structural component rather than a functional identity. While it serves containment, its identity is given by being the outer structural shell of a vessel, not by a unique function.
Validation status
Why primitive (necessary only)
Reviewer notes
FOL theory & disjointness
First-order logic theory (generated)
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Disjoint with
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Expert review
Axiomatization steps
1
Identity-Giving Function
✓ done
ContainmentFunction → ContainmentProcess ⊑ MaterialContainment
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COPI-Core operation
MaterialContainment via process parent MaterialContainment
LLM rationale:
Reusing ContainmentFunction from the already-enriched vessel class, as vessel shell serves the same fundamental containment role but as a structural component rather than complete equipment. The shell realizes containment through its pressure-containing boundary.
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Expert review
2
Genus Proximus
✓ done
MaterialArtifact
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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:
Vessel shell is explicitly described as 'all or part of' the pressure containing outer part of a vessel - it is a demarcated portion of a larger vessel object, not a standalone object with independent causal boundary. FiatObjectPart is appropriate for structural components that are parts of vessels rather than complete assemblies.
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Expert review
3
Differentia Specifica
✓ done
∃partOf.Vessel ⊓ ∃hasFunction.PressureContainmentFunction
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Conditions that distinguish
Vessel Shell
from sibling classes under genus
MaterialArtifact.
Only what is not already entailed by the genus.
Differentia expression
Differentia (natural language)
LLM rationale:
The differentia specifies that this is specifically the outer pressure-containing part of a vessel (not other vessel parts) with the pressure containment specialization of the generic containment function.
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Expert review
4
Necessary Parts
✓ done
None
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Consider part-whole relations beyond subsumption:
hasComponentPartAtAllTimes (universal, structurally essential)
· hasComponentPartAtSomeTime (contingent, optional component)
LLM rationale:
The source definition identifies vessel shell as a structural boundary but does not specify universal subcomponents. The subtypes (covers, flanges) are attachment points that vary by design rather than universal parts of all vessel shells.
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Expert review
5
Process Participation Signature ⟨I, O, T⟩
✓ done
PortionOfFluid → PortionOfFluid
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Inputs (I)
Outputs (O)
Transformation (T)
LLM rationale:
Vessel shell participates in containment by providing the pressure boundary. Input and output are the same fluid portion - the transformation is maintaining containment rather than changing the fluid properties.
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Expert review
More
Alternative labels
none
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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
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No CFIHOS/DEXPI properties found for this cluster.
Custom axioms
none
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Axioms not produced by the pipeline. Each is appended verbatim as an
rdfs:subClassOf restriction on Vessel Shell.
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)
VESSEL SHELL — 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 vessel shell?
- open Is a vessel shell a necessary component of every vessel?
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 420 · claude-sonnet-4-20250514
Created 2026-05-04 18:27
Updated 2026-09-08 12:26
