exported necessary COPI_0000339
Riser
IRI: https://www.inf.ufrgs.br/ontologies/copi/COPI_0000339
Generated onGerado em 2026-04-15
Natural Language DefinitionDefinição em Linguagem Natural
EN
A riser is a pipe that has vertical or near-vertical orientation and is designed for the upward flow of liquid or gas.
PT-BR
Um riser é um tubo que tem orientação vertical ou quase vertical e é projetado para o fluxo ascendente de líquido ou gás.
Formal AxiomsAxiomas Formais
Semi-formal (Aristotelian)Semi-formal (Aristotélico)
Every riser is a pipe that has vertical orientation and participates in upward flow processes.
First-Order Logic TheoryTeoria em Lógica de Primeira Ordem
[Necessary condition]∀x (Riser(x) → Pipe(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 (Riser(x) → ∃hasQuality.VerticalOrientation ⊓ ∃participatesIn.UpwardFlowProcess) — Step 3: structural property — necessary condition, not sufficient (OWA prevents ≡) [Process participation signature]∀x ∀f ((Riser(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: Riser <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: Riser :Riser rdf:type owl:Class ; rdfs:subClassOf :Pipe ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart) owl:someValuesFrom :FluidConductionFunction ] ; rdfs:label "riser"@en ; rdfs:label "riser"@pt-br ; iof-av:naturalLanguageDefinition "A riser is a pipe that has vertical or near-vertical orientation and is designed for the upward flow of liquid or gas."@en ; skos:definition "A riser is a pipe that has vertical or near-vertical orientation and is designed for the upward flow of liquid or gas."@en ; iof-av:naturalLanguageDefinition "Um riser é um tubo que tem orientação vertical ou quase vertical e é projetado para o fluxo ascendente de líquido ou gás."@pt-br ; iof-av:semiFormalNaturalLanguageAxiom "Every riser is a pipe that has vertical orientation and participates in upward flow processes."@en ; iof-av:firstOrderLogicAxiom "∀x (Riser(x) → Pipe(x) ∧ ∃q(VerticalOrientation(q) ∧ hasQuality(x,q)) ∧ ∃p(UpwardFlowProcess(p) ∧ participatesIn(x,p)))"@en ; iof-av:isPrimitive "true"^^xsd:boolean ; iof-av:primitiveRationale "Using necessary conditions because this is a constructive type defined by physical configuration. Under OWA, any pipe with vertical orientation and upward flow could be forced into this category, including specialized equipment that should not be classified as standard risers (e.g., reactor internals, distillation column internals). Starting with necessary conditions protects against false positives."@en ;
Axiomatization Decision LogRegistro de Decisões
1 Identity-Giving FunctionFunção Identitária
Function class
FluidConductionFunction ⊑ DesignedFunction
Realized in
FluidConductionProcess ⊑ PlannedProcess
A riser's identity-giving function is the same as any pipe - to conduct fluid from one location to another. The distinguishing aspect is not a unique function but the constructive configuration (vertical orientation for upward flow).
2 Genus DeterminationDeterminação do Gênero
pipebfo:Object (BFO_0000030)
From the parent candidates and definitions, riser is clearly a specialized type of pipe. ISO 15926 defines it as a FLUID CONDUCTOR, and all sources emphasize it is a 'pipe' with specific orientation. The enriched pipe class already exists in the ontology with FluidConductionFunction.
3 Differentia SpecificaDiferença Específica
∃hasQuality.VerticalOrientation ⊓ ∃participatesIn.UpwardFlowProcess

A pipe that has vertical or near-vertical orientation and is designed for upward flow of liquids or gases.

The minimal differentiating conditions are the vertical orientation (geometric constraint) and the upward flow direction (process participation). These are the only conditions mentioned consistently across all sources that distinguish a riser from other pipes.
4 Necessary PartsPartes Necessárias

No necessary parts recorded.

Risers do not require any additional parts beyond those inherited from pipe. The differentia is purely geometric/configurational, not structural.
Process Participation SignatureAssinatura de Participação em Processo
InputsEntradas
{'type': 'FluidPortion', 'count': 1, 'constraints': 'liquid or gas phase, entering from bottom'}
OutputsSaídas
{'type': 'FluidPortion', 'count': 1, 'constraints': 'same fluid composition, exiting at top with potential elevation head gain'}
TransformationTransformação
gravitational potential energy change - fluid gains elevation
Risers transport fluid upward against gravity, adding gravitational potential energy to the fluid. The key signature element is the vertical elevation change.
MetadataMetadados
COPI IDCOPI IDCOPI_0000339
IRIIRIhttps://www.inf.ufrgs.br/ontologies/copi/COPI_0000339
StatusStatusexported
Axiom modeModonecessary
CreatedCriado2026-04-15
UpdatedAtualizado2026-06-26
LLM modelModelo LLMclaude-sonnet-4-20250514
VersionVersão2026-07-13