exported
equivalent
pressure vessel
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Pressurevessel
Generated on 2026-04-13
Natural Language Definition
EN
A pressure vessel is a vessel that bears a pressure containment function, designed to safely withstand internal and/or external pressure loads.
PT-BR
Um vaso de pressão é um vaso que possui uma função de contenção sob pressão, projetado para suportar com segurança cargas de pressão internas e/ou externas.
Formal Axioms
Semi-formal (Aristotelian)
Every pressure vessel is a vessel that has a pressure containment function, and every vessel with a pressure containment function is a pressure vessel.
First-Order Logic Theory
Loading…
▸ Stored override
∀x (PressureVessel(x) ↔ (Vessel(x) ∧ ∃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: PressureVessel
<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_0000381 rdf:type owl:Class ; # PressureContainmentFunction
rdfs:subClassOf :COPI_0000025 ; # ContainmentFunction
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000605 # PressureContainmentProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000605 # PressureContainmentProcess
] ;
rdfs:label "pressure containment function"@en ;
rdfs:label "função de contenção de pressão"@pt-br .
:COPI_0000025 rdf:type owl:Class . # ContainmentFunction
### Process type
:COPI_0000605 rdf:type owl:Class ; # PressureContainmentProcess
rdfs:subClassOf :COPI_0000009 ; # MaterialContainment
rdfs:label "pressure containment process"@en ;
rdfs:label "processo de contenção de pressão"@pt-br .
:COPI_0000009 rdf:type owl:Class . # MaterialContainment
:COPI_0000605 # PressureContainmentProcess
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: PressureVessel
:COPI_0000090 rdf:type owl:Class ; # PressureVessel
owl:equivalentClass [
rdf:type owl:Class ;
owl:intersectionOf (
:COPI_0000158 # Vessel
[
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000381 # PressureContainmentFunction
]
)
] ;
rdfs:label "pressure vessel"@en ;
rdfs:label "vaso de pressão"@pt-br ;
iof-av:naturalLanguageDefinition "A pressure vessel is a vessel that bears a pressure containment function, designed to safely withstand internal and/or external pressure loads."@en ;
skos:definition "A pressure vessel is a vessel that bears a pressure containment function, designed to safely withstand internal and/or external pressure loads."@en ;
iof-av:naturalLanguageDefinition "Um vaso de pressão é um vaso que possui uma função de contenção sob pressão, projetado para suportar com segurança cargas de pressão internas e/ou externas."@pt-br ;
iof-av:semiFormalNaturalLanguageAxiom "Every pressure vessel is a vessel that has a pressure containment function, and every vessel with a pressure containment function is a pressure vessel."@en ;
iof-av:firstOrderLogicAxiom "∀x (PressureVessel(x) ↔ (Vessel(x) ∧ ∃f (PressureContainmentFunction(f) ∧ bearerOf(x,f))))"@en ;
skos:definition "[POSC Caesar] A vessel intended to withstand external and/or internal pressure"@en .
Axiomatization Decision Log
1
Identity-Giving Function
Function class
PressureContainmentFunction
⊑ ContainmentFunction
Realized in
PressureContainmentProcess
⊑ MaterialContainment
The identity-giving function is the designed capability to safely contain fluids or gases under internal and/or external pressure. This specializes the broader ContainmentFunction by adding the pressure-bearing requirement.
✓
Expert review — Accepted
2
Genus Determination
Vessel
From parent candidates, 'Static Equipment' is too broad. The most specific appropriate superclass is 'Vessel', which is already enriched in the ontology with ContainmentFunction. Pressure vessel is a specialized vessel designed for pressure service.
✓
Expert review — Accepted
3
Necessary Parts
No necessary parts recorded (concept may be primitive at this level).
These parts are universal requirements for pressure containment capability - a pressure-rated shell provides the containment boundary, and pressure-rated nozzles provide controlled access.
✓
Expert review — Accepted
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PortionOfFluid
— under pressure
Outputs (O)
PortionOfFluid
— pressure maintained
Transformation (T)
pressure containment with no chemical transformation
Pressure vessels contain pressurized fluids (liquid, gas, or multiphase) maintaining pressure integrity without altering the fluid composition. Input/output count varies based on vessel design and service.
✓
Expert review — Accepted
5
Axiom Mode Decision
Necessary + Sufficient
— modelled as a defined class
(≡, EquivalentClass). Automatic classification is
appropriate for this concept.
✓
Expert review — Accepted
Source Definitions
1 source
POSC Caesar
Pressure Vessel ↗
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 | #60 |
| Cluster | pressure vessel |
| Status | exported |
| Axiom mode | equivalent |
| Created | 2026-04-13 |
| Updated | 2026-09-08 |
ISA 5.1-2022 P&ID Symbol
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