exported
necessary
vessel shell
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Vesselshell
Generated on 2026-05-04
Natural Language Definition
EN
A fiat object part that is the outer pressure-containing structural boundary of a vessel, designed to enclose and isolate internal contents while withstanding internal pressure loads.
PT-BR
Uma parte de objeto por fiat que é o limite estrutural externo de contenção de pressão de um vaso, projetada para encerrar e isolar o conteúdo interno enquanto suporta cargas de pressão interna.
Formal Axioms
Semi-formal (Aristotelian)
VesselShell SubClassOf: FiatObjectPart and partOf some Vessel and bearerOf some PressureContainmentFunction
First-Order Logic Theory
Loading…
▸ Stored override
∀x(VesselShell(x) → FiatObjectPart(x) ∧ ∃y(Vessel(y) ∧ partOf(x,y)) ∧ ∃f(PressureContainmentFunction(f) ∧ bearerOf(x,f)))
OWL 2 / Turtle
@prefix copi: <https://www.inf.ufrgs.br/ontologies/copi/> .
@prefix : <https://www.inf.ufrgs.br/ontologies/copi/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix bfo: <http://purl.obolibrary.org/obo/> .
@prefix iof-core: <https://spec.industrialontologies.org/ontology/construct/> .
@prefix iof-av: <https://spec.industrialontologies.org/ontology/annotation/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix qudt: <http://qudt.org/schema/qudt/> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix apv: <http://inf.ufrgs.br/ontologies/apv#> .
### COPI — Core Ontology for Petroleum Installations
### Class module: VesselShell
<https://www.inf.ufrgs.br/ontologies/copi>
rdf:type owl:Ontology ;
dcterms:title "Core Ontology for Petroleum Installations (COPI)"@en ;
dcterms:title "Ontologia Core para Instalações de Petróleo (COPI)"@pt-br ;
dcterms:description "BFO/IOF-Core conformant ontology of equipment classes for petroleum production plants, developed using the five-step RDL enrichment method."@en ;
skos:scopeNote "Material artifacts (bfo:material_entity) that (i) are part of a petroleum production plant, and (ii) bear at least one function whose realization involves the transport (e.g. production and injection), processing (separation and other processes), control, monitoring, measurement, containment or offloading of material or energy."@en ;
skos:scopeNote "Artefatos materiais (bfo:material_entity) que (i) fazem parte de uma planta de produção de petróleo, e (ii) possuem ao menos uma função cuja realização envolve o transporte (p. ex. produção e injeção), processamento (separação e outros processos), controle, monitoramento, medição, contenção ou escoamento de material ou energia."@pt-br ;
skos:scopeNote "COPI provides high-level equipment categories defined by function to demonstrate the defined-class mechanism. Equipment subtypes are annotated with references to CFIHOS and PCA RDL terms. COPI is not a reference data library; organizations should use CFIHOS, PCA RDL, or ISO 14224 for comprehensive equipment classification."@en ;
skos:scopeNote "COPI fornece categorias de alto nível de equipamentos definidas por função para demonstrar o mecanismo de classe definida. Os subtipos de equipamentos são anotados com referências aos termos do CFIHOS e do PCA RDL. COPI não é uma biblioteca de dados de referência; organizações devem utilizar o CFIHOS, o PCA RDL ou a ISO 14224 para classificação abrangente de equipamentos."@pt-br ;
owl:versionInfo "1.1.0" ;
owl:imports <https://spec.industrialontologies.org/ontology/core/Core/> ;
owl:imports <http://purl.obolibrary.org/obo/bfo/2020/bfo.owl> ;
dcterms:creator "Nicolau Oyhenard dos Santos"@en ;
dcterms:contributor "Cauã Antunes" ;
dcterms:contributor "Haroldo Rojas" ;
dcterms:contributor "Rafael Petry" ;
dcterms:contributor "Régis Romeu" ;
dcterms:contributor "Mara Abel" ;
dcterms:isPartOf <https://inf.ufrgs.br/projetos/OntoKG> ;
dcterms:publisher "Universidade Federal do Rio Grande do Sul (UFRGS)"@en ;
dcterms:license <https://creativecommons.org/licenses/by/4.0/> ;
dcterms:created "2026-04-08"^^xsd:date ;
dcterms:modified "2026-10-08"^^xsd:date ;
apv:GlobalMinLanguageCoverage "en pt-br" ;
apv:ClassURIFormationRule "https://www[.]inf[.]ufrgs[.]br/ontologies/copi/(COPI_[0-9]{7}|[A-Z][A-Za-z0-9]*)" ;
apv:ClassMinAnnotationCoverage "rdfs:label https://spec.industrialontologies.org/ontology/annotation/naturalLanguageDefinition" .
iof-av:naturalLanguageDefinition rdf:type owl:AnnotationProperty ;
apv:MinAnnotationLength 20 .
### Identity-giving function
:COPI_0000025 rdf:type owl:Class ; # ContainmentFunction
rdfs:subClassOf iof-core:DesignedFunction ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000443 # ContainmentProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000443 # ContainmentProcess
] ;
rdfs:label "containment function"@en ;
rdfs:label "função de contenção"@pt-br ;
iof-av:naturalLanguageDefinition "A DesignedFunction that is realized in a ContainmentProcess and that consists in providing a pressure-containing boundary to enclose and isolate fluids or materials within a defined volume."@en ;
skos:definition "A DesignedFunction that is realized in a ContainmentProcess and that consists in providing a pressure-containing boundary to enclose and isolate fluids or materials within a defined volume."@en .
### Process type
:COPI_0000443 rdf:type owl:Class ; # ContainmentProcess
rdfs:subClassOf :COPI_0000009 ; # MaterialContainment
rdfs:label "containment process"@en ;
rdfs:label "processo de contenção"@pt-br ;
iof-av:naturalLanguageDefinition "A PlannedProcess in which a structural boundary maintains separation between internal contents and external environment, preventing uncontrolled release while withstanding internal pressure loads."@en ;
skos:definition "A PlannedProcess in which a structural boundary maintains separation between internal contents and external environment, preventing uncontrolled release while withstanding internal pressure loads."@en .
:COPI_0000009 rdf:type owl:Class . # MaterialContainment
:COPI_0000443 # ContainmentProcess
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasInput ;
owl:someValuesFrom :COPI_0000037 # PortionOfFluid
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasSpecifiedOutput ;
owl:someValuesFrom :COPI_0000037 # PortionOfFluid
] .
### Equipment universal: VesselShell
:COPI_0000374 rdf:type owl:Class ; # VesselShell
rdfs:subClassOf iof-core:MaterialArtifact ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000025 # ContainmentFunction
] ;
rdfs:label "vessel shell"@en ;
rdfs:label "parte de objeto por fiat"@pt-br ;
iof-av:naturalLanguageDefinition "A fiat object part that is the outer pressure-containing structural boundary of a vessel, designed to enclose and isolate internal contents while withstanding internal pressure loads."@en ;
skos:definition "A fiat object part that is the outer pressure-containing structural boundary of a vessel, designed to enclose and isolate internal contents while withstanding internal pressure loads."@en ;
iof-av:naturalLanguageDefinition "Uma parte de objeto por fiat que é o limite estrutural externo de contenção de pressão de um vaso, projetada para encerrar e isolar o conteúdo interno enquanto suporta cargas de pressão interna."@pt-br ;
iof-av:semiFormalNaturalLanguageAxiom "VesselShell SubClassOf: FiatObjectPart and partOf some Vessel and bearerOf some PressureContainmentFunction"@en ;
iof-av:firstOrderLogicAxiom "∀x(VesselShell(x) → FiatObjectPart(x) ∧ ∃y(Vessel(y) ∧ partOf(x,y)) ∧ ∃f(PressureContainmentFunction(f) ∧ bearerOf(x,f)))"@en ;
iof-av:isPrimitive "true"^^xsd:boolean ;
iof-av:primitiveRationale "Constructive type defined by structural configuration as outer pressure-containing part of vessel. Under Open World Assumption, sufficient conditions are difficult to establish - other structural components might also be pressure-containing parts of vessels in specialized designs."@en ;
skos:definition "[ISO 15926-4] A <VESSEL SHELL> is an <ARTEFACT> and a <SHELL(structure)> that is all or part of the pressure containing outer part of a vessel"@en .
Axiomatization Decision Log
1
Identity-Giving Function
Function class
ContainmentFunction
⊑ DesignedFunction
Realized in
ContainmentProcess
⊑ MaterialContainment
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.
2
Genus Determination
MaterialArtifact
bfo:Object (BFO_0000030)
Monolithic causally unified material artefact.
MaterialArtifact ≡ Object ⊓ ∃bearerOf.DesignedFunction.
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.
3
Necessary Parts
| Part class | Parent | Relation |
|---|---|---|
| None | MaterialArtifact | hasComponentPartAtAllTimes |
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.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PortionOfFluid
— any phase, contained within vessel internal volume
Outputs (O)
PortionOfFluid
— same as input, maintained in containment
Transformation (T)
structural boundary maintains fluid containment under pressure without allowing uncontrolled release to external environment
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.
5
Axiom Mode Decision
Necessary conditions only
— modelled as a primitive universal
(⊑, SubClassOf). Identity is grounded in designed
function and cannot be reduced to a property checklist.
Constructive type defined by structural configuration as outer pressure-containing part of vessel. Under Open World Assumption, sufficient conditions are difficult to establish - other structural components might also be pressure-containing parts of vessels in specialized designs.
Cross-Standard Observations
Single source definition from ISO 15926-4. No cross-standard divergences to assess. Definition is structurally precise, identifying vessel shell as pressure-containing outer boundary.
Source Definitions
1 source
ISO 15926-4
VESSEL SHELL ↗
Definition text withheld (copyrighted standard) — follow the source link above.
Metadata
| Ontology | COPI |
| Research group | INF-UFRGS-Ontologies |
| Funding | CNPq INF-UFRGS-ENERGIA |
| Project | OntoKG / Petrobras |
| ID | #420 |
| Cluster | vessel shell |
| Status | exported |
| Axiom mode | necessary |
| Created | 2026-05-04 |
| Updated | 2026-09-08 |
ISA 5.1-2022 P&ID Symbol
wikimedia/separator.svg
