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exported necessary COPI_0000277
Flexible Riser
IRI: https://www.inf.ufrgs.br/ontologies/copi/COPI_0000277
Generated onGerado em 2026-04-16
Natural Language DefinitionDefinição em Linguagem Natural
EN
A flexible riser is a riser that has flexible material construction allowing vertical or near-vertical fluid conduction between seabed and surface while accommodating vessel movement.
PT-BR
Um riser flexível é um riser que possui construção de material flexível permitindo condução de fluido vertical ou quase vertical entre o fundo do mar e a superfície, acomodando o movimento da embarcação.
Formal AxiomsAxiomas Formais
Semi-formal (Aristotelian)Semi-formal (Aristotélico)
Every flexible riser is a riser that has a flexible property
First-Order Logic TheoryTeoria em Lógica de Primeira Ordem
[Necessary condition]∀x (FlexibleRiser(x) → Riser(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 (FlexibleRiser(x) → ∃hasQuality.FlexibleProperty) — Step 3: structural property — necessary condition, not sufficient (OWA prevents ≡) [Process participation signature]∀x ∀f ((FlexibleRiser(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: FlexibleRiser <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: FlexibleRiser :FlexibleRiser rdf:type owl:Class ; rdfs:subClassOf :Riser ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart) owl:someValuesFrom :FluidConductionFunction ] ; rdfs:label "flexible riser"@en ; rdfs:label "riser flexível"@pt-br ; iof-av:naturalLanguageDefinition "A flexible riser is a riser that has flexible material construction allowing vertical or near-vertical fluid conduction between seabed and surface while accommodating vessel movement."@en ; skos:definition "A flexible riser is a riser that has flexible material construction allowing vertical or near-vertical fluid conduction between seabed and surface while accommodating vessel movement."@en ; iof-av:naturalLanguageDefinition "Um riser flexível é um riser que possui construção de material flexível permitindo condução de fluido vertical ou quase vertical entre o fundo do mar e a superfície, acomodando o movimento da embarcação."@pt-br ; iof-av:semiFormalNaturalLanguageAxiom "Every flexible riser is a riser that has a flexible property"@en ; iof-av:firstOrderLogicAxiom "∀x(FlexibleRiser(x) → Riser(x) ∧ ∃q(FlexibleProperty(q) ∧ hasQuality(x,q)))"@en ; iof-av:isPrimitive "true"^^xsd:boolean ; iof-av:primitiveRationale "Constructive type where flexibility is a material/structural property. Under OWA, asserting equivalence would force any pipe with flexible qualities to be classified as a flexible riser, even if it serves different functions or has different deployment contexts. 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
Reusing the same function as the parent class 'riser' since flexible riser performs the same core fluid conduction function. The flexibility is a structural differentia, not a functional one.
2 Genus DeterminationDeterminação do Gênero
riserbfo:Object (BFO_0000030)
From parent_candidates, 'riser' is already enriched and is the most specific appropriate superclass. Flexible riser is a subtype of riser distinguished by its flexible construction. ARTEFACT is too broad.
3 Differentia SpecificaDiferença Específica
∃hasQuality.FlexibleProperty

Distinguished from rigid risers by having flexible material construction that allows bending and movement.

The key differentia is the flexible property that allows the riser to bend and accommodate vessel motion, distinguishing it from rigid riser designs.
4 Necessary PartsPartes Necessárias

No necessary parts recorded.

Flexible risers require a flexible pipe body as their distinguishing structural component, plus the basic fluid-conducting bore common to all risers.
Process Participation SignatureAssinatura de Participação em Processo
InputsEntradas
{'type': 'FluidPortion', 'count': 1, 'constraints': 'liquid or gas from seabed'}
OutputsSaídas
{'type': 'FluidPortion', 'count': 1, 'constraints': 'same fluid delivered to surface'}
TransformationTransformação
spatial transport with accommodation of vessel movement
Same process signature as parent riser class - single fluid stream transported vertically from seabed to surface, with added capability for dynamic positioning accommodation.
MetadataMetadados
COPI IDCOPI IDCOPI_0000277
IRIIRIhttps://www.inf.ufrgs.br/ontologies/copi/COPI_0000277
StatusStatusexported
Axiom modeModonecessary
CreatedCriado2026-04-16
UpdatedAtualizado2026-06-28
LLM modelModelo LLMclaude-sonnet-4-20250514
VersionVersão2026-07-13
Quick factsDados rápidos
GenusGêneroriser
Root classClasse raizMaterialArtifact
Axiom modeModonecessary
FunctionFunçãoFluidConductionFunction
ProcessProcessoFluidConductionProcess
PartsPartes0
Source DefinitionsDefinições nas Fontes 2 sources
ISO 15926-4 FLEXIBLE RISER
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 flexible riser
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.