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exported necessary COPI_0000321
Pipe
IRI: https://www.inf.ufrgs.br/ontologies/copi/COPI_0000321
Generated onGerado em 2026-04-13
Natural Language DefinitionDefinição em Linguagem Natural
EN
A pipe is a material artifact characterized by tubular geometry and longitudinal extent, designed to conduct liquid, gaseous or finely divided solid materials from one location to another, or to serve structural purposes.
PT-BR
Um tubo é um artefato material caracterizado por geometria tubular e extensão longitudinal, projetado para conduzir materiais líquidos, gasosos ou sólidos finamente divididos de um local para outro, ou para servir a propósitos estruturais.
Formal AxiomsAxiomas Formais
Semi-formal (Aristotelian)Semi-formal (Aristotélico)
Every pipe is a material artifact that has fluid conduction function and has tubular geometry and has longitudinal extent.
First-Order Logic TheoryTeoria em Lógica de Primeira Ordem
[Necessary condition]∀x (Pipe(x) → MaterialArtifact(x) ∧ ∃f (FluidConductionFunction(f) ∧ bearerOf(x,f))) — Steps 1–3: genus + identity-giving function [Function axiom: FluidConductionFunction]∀f (FluidConductionFunction(f) → ∀p (realizedIn(f,p) → FluidConductionProcess(p)) ∧ ∃p (FluidConductionProcess(p) ∧ realizedIn(f,p))) — Step 1: ∀ preserves type-type identity; ∃ rules out vacuous functions never realised [Structural differentia (necessary only)]∀x (Pipe(x) → ∃bearerOf.FluidConductionFunction ⊓ ∃hasPhysicalProperty.TubularGeometry ⊓ ∃hasPhysicalProperty.LongitudinalExtent) — Step 3: structural property — necessary condition, not sufficient (OWA prevents ≡) [Process participation signature]∀x ∀f ((Pipe(x) ∧ FluidConductionFunction(f) ∧ bearerOf(x,f)) → ∃m (FluidPortion(m) ∧ participatesIn(m,f)) ∧ ∃e (FluidPortion(e) ∧ participatesIn(e,f)) ∧ processType(f,FluidTransport)) — Step 5: typed participants in the realising process
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: Pipe <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 "1.1.0-104-g4d16eff" ; 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 "2026-07-13"^^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 :FluidConductionFunction rdf:type owl:Class ; rdfs:subClassOf iof-core:DesignedFunction ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:allValuesFrom :FluidConductionProcess ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:someValuesFrom :FluidConductionProcess ] ; rdfs:label "fluid conduction function"@en ; rdfs:label "função de condução de fluido"@pt-br . ### Process type :FluidConductionProcess rdf:type owl:Class ; rdfs:subClassOf iof-core:PlannedProcess ; rdfs:label "fluid conduction process"@en ; rdfs:label "processo de condução de fluido"@pt-br . :FluidConductionProcess rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasInput ; owl:someValuesFrom :FluidPortion ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasSpecifiedOutput ; owl:someValuesFrom :FluidPortion ] . ### Equipment universal: Pipe :Pipe rdf:type owl:Class ; rdfs:subClassOf iof-core:MaterialArtifact ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart) owl:someValuesFrom :FluidConductionFunction ] ; rdfs:label "pipe"@en ; rdfs:label "tubo"@pt-br ; iof-av:naturalLanguageDefinition "A pipe is a material artifact characterized by tubular geometry and longitudinal extent, designed to conduct liquid, gaseous or finely divided solid materials from one location to another, or to serve structural purposes."@en ; skos:definition "A pipe is a material artifact characterized by tubular geometry and longitudinal extent, designed to conduct liquid, gaseous or finely divided solid materials from one location to another, or to serve structural purposes."@en ; iof-av:naturalLanguageDefinition "Um tubo é um artefato material caracterizado por geometria tubular e extensão longitudinal, projetado para conduzir materiais líquidos, gasosos ou sólidos finamente divididos de um local para outro, ou para servir a propósitos estruturais."@pt-br ; iof-av:semiFormalNaturalLanguageAxiom "Every pipe is a material artifact that has fluid conduction function and has tubular geometry and has longitudinal extent."@en ; iof-av:firstOrderLogicAxiom "∀x(Pipe(x) → MaterialArtifact(x) ∧ ∃f(FluidConductionFunction(f) ∧ hasFunction(x,f)) ∧ ∃g(TubularGeometry(g) ∧ hasPhysicalProperty(x,g)) ∧ ∃h(LongitudinalExtent(h) ∧ hasPhysicalProperty(x,h)))"@en ; iof-av:isPrimitive "true"^^xsd:boolean ; iof-av:primitiveRationale "Using necessary conditions because pipe is defined by constructive/geometric properties (tubular geometry, longitudinal extent) rather than purely functional criteria. Under Open World Assumption, asserting sufficient conditions based on geometric properties could lead to unintended classification of complex tubular structures that happen to conduct fluids but should not be categorized as standard pipes."@en ; # Disjointness: Pipe and Valve [] rdf:type owl:AllDisjointClasses ; owl:members ( :Pipe :Valve ) . # Disjointness: Pipe and Pump [] rdf:type owl:AllDisjointClasses ; owl:members ( :Pipe :Pump ) . # Disjointness: Pipe and Compressor [] rdf:type owl:AllDisjointClasses ; owl:members ( :Pipe :Compressor ) .
Axiomatization Decision LogRegistro de Decisões
1 Identity-Giving FunctionFunção Identitária
Function class
FluidConductionFunction ⊑ DesignedFunction
Realized in
FluidConductionProcess ⊑ PlannedProcess
While pipes can serve structural purposes, their primary and most common designed function is fluid conduction - providing a pathway for liquid, gaseous or finely divided solid materials. This is the most general function that encompasses the majority of pipe applications.
2 Genus DeterminationDeterminação do Gênero
MaterialArtifactbfo:Object (BFO_0000030)
Pipe represents a fundamental category of industrial equipment without a more specific superclass in our current ontology. While FLUID CONDUCTOR appears in the source hierarchies, it is not present in our enriched classes. A pipe is a causally unified material artifact - a single physical object that can be manufactured, transported, installed, and maintained as one unit. It lacks the complex removable subcomponents that would make it an Assembly.
3 Differentia SpecificaDiferença Específica
∃bearerOf.FluidConductionFunction ⊓ ∃hasPhysicalProperty.TubularGeometry ⊓ ∃hasPhysicalProperty.LongitudinalExtent

A pipe is distinguished by its tubular (hollow cylindrical) geometry with significant longitudinal extent, designed for conducting fluids or serving structural purposes.

The tubular geometry and longitudinal extent are the minimal physical properties that distinguish a pipe from other material artifacts. The FluidConductionFunction covers the primary designed purpose, though pipes can also serve structural roles.
4 Necessary PartsPartes Necessárias

No necessary parts recorded.

These are the minimal essential parts that make a pipe a pipe - the wall structure and the hollow interior. End connections, fittings, or supports are not universal requirements.
Process Participation SignatureAssinatura de Participação em Processo
InputsEntradas
{'type': 'FluidPortion', 'count': 1, 'constraints': 'enters at one end'}
OutputsSaídas
{'type': 'FluidPortion', 'count': 1, 'constraints': 'exits at other end, same composition'}
TransformationTransformação
spatial transport without chemical or phase change
A pipe provides a conduit for fluid transport from one location to another without altering the fluid's properties. The signature is minimal - one input stream, one output stream, no transformation beyond spatial displacement.
Disjoint WithDisjunto com
Valve Pump Compressor
C4: Valve, Pump, Compressor. These classes have fundamentally different process signatures - valves control/regulate flow, pumps add energy to fluids, compressors change fluid density. Their active transformation functions are incompatible with pipe's passive transport signature.
MetadataMetadados
COPI IDCOPI IDCOPI_0000321
IRIIRIhttps://www.inf.ufrgs.br/ontologies/copi/COPI_0000321
StatusStatusexported
Axiom modeModonecessary
CreatedCriado2026-04-13
UpdatedAtualizado2026-06-26
LLM modelModelo LLMclaude-sonnet-4-20250514
VersionVersão2026-07-13
Quick factsDados rápidos
GenusGêneroMaterialArtifact
Root classClasse raizMaterialArtifact
Axiom modeModonecessary
FunctionFunçãoFluidConductionFunction
ProcessProcessoFluidConductionProcess
PartsPartes0
Source DefinitionsDefinições nas Fontes 4 sources
ISO 15926-4 PIPE
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.
CFIHOS pipe
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.
DEXPI Pipe
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.
POSC Caesar Pipe
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.