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validated necessary COPI_0000744
Blanking Cap Pipe Union
IRI: https://www.inf.ufrgs.br/ontologies/copi/COPI_0000744
Generated onGerado em 2026-09-10
Natural Language DefinitionDefinição em Linguagem Natural
EN
A blanking cap pipe union (end of line terminator) is a cap assembly consisting of a female union sub with a threaded end, permanently fitted to a pipe, and a threaded cap screwed onto it to close off fluid flow at the end of a line.
PT-BR
Um conjunto de tampa cega de uniao de tubo (terminador de fim de linha) e um conjunto de tampa formado por uma luva de uniao femea com extremidade rosqueada, fixada permanentemente a um tubo, e uma tampa rosqueada aparafusada sobre ela para fechar o fluxo de fluido na extremidade de uma linha.
Formal AxiomsAxiomas Formais
Semi-formal (Aristotelian)Semi-formal (Aristotélico)
Every blanking cap pipe union is a cap that bears a closure function and has a female union sub and a threaded pipe cap as component parts, screwed together to close off fluid flow.
First-Order Logic TheoryTeoria em Lógica de Primeira Ordem
[Necessary condition]∀x (BlankingCapPipeUnion(x) → Cap(x) ∧ ∃f (ClosureFunction(f) ∧ bearerOf(x,f))) — Steps 1–3: genus + identity-giving function [Function axiom: ClosureFunction]∀f (ClosureFunction(f) → ∀p (realizedIn(f,p) → ClosureProcess(p)) ∧ ∃p (ClosureProcess(p) ∧ realizedIn(f,p))) — Step 1: ∀ preserves type-type identity; ∃ rules out vacuous functions never realised [Structural differentia (necessary only)]∀x (BlankingCapPipeUnion(x) → ∃hasComponentPartAtAllTimes.FemaleUnionSub ⊓ ∃hasComponentPartAtAllTimes.ThreadedPipeCap) — Step 3: structural property — necessary condition, not sufficient (OWA prevents ≡) [Necessary part: FemaleUnionSub]∀x (BlankingCapPipeUnion(x) → ∃p (FemaleUnionSub(p) ∧ hasComponentPartAtAllTimes(x,p))) — Step 4: mereological commitment — every instance must have this part [Process participation signature]∀x ∀f ((BlankingCapPipeUnion(x) ∧ ClosureFunction(f) ∧ bearerOf(x,f)) → processType(f,Containment)) — 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: BlankingCapPipeUnion <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 "2026-10-07"^^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 :ClosureFunction rdf:type owl:Class ; rdfs:subClassOf iof-core:DesignedFunction ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:allValuesFrom :ClosureProcess ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:someValuesFrom :ClosureProcess ] ; rdfs:label "closure function"@en ; iof-av:naturalLanguageDefinition "A DesignedFunction that is realized in a ClosureProcess and that consists in covering or capping the top or end of an artefact, protecting or sealing it from the surrounding environment."@en ; skos:definition "A DesignedFunction that is realized in a ClosureProcess and that consists in covering or capping the top or end of an artefact, protecting or sealing it from the surrounding environment."@en . ### Process type :ClosureProcess rdf:type owl:Class ; rdfs:subClassOf :MaterialContainment ; rdfs:label "closure process"@en ; iof-av:naturalLanguageDefinition "A MaterialContainment process in which a threaded cap is screwed onto a female union sub fitted to a pipe end, closing off fluid flow through that end."@en ; skos:definition "A MaterialContainment process in which a threaded cap is screwed onto a female union sub fitted to a pipe end, closing off fluid flow through that end."@en . :MaterialContainment rdf:type owl:Class . ### Equipment universal: BlankingCapPipeUnion :BlankingCapPipeUnion rdf:type owl:Class ; rdfs:subClassOf :Cap ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart) owl:someValuesFrom :ClosureFunction ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasComponentPartAtAllTimes ; owl:someValuesFrom :FemaleUnionSub ] ; rdfs:label "blanking cap pipe union"@en ; iof-av:naturalLanguageDefinition "A blanking cap pipe union (end of line terminator) is a cap assembly consisting of a female union sub with a threaded end, permanently fitted to a pipe, and a threaded cap screwed onto it to close off fluid flow at the end of a line."@en ; skos:definition "A blanking cap pipe union (end of line terminator) is a cap assembly consisting of a female union sub with a threaded end, permanently fitted to a pipe, and a threaded cap screwed onto it to close off fluid flow at the end of a line."@en ; iof-av:naturalLanguageDefinition "Um conjunto de tampa cega de uniao de tubo (terminador de fim de linha) e um conjunto de tampa formado por uma luva de uniao femea com extremidade rosqueada, fixada permanentemente a um tubo, e uma tampa rosqueada aparafusada sobre ela para fechar o fluxo de fluido na extremidade de uma linha."@pt-br ; iof-av:semiFormalNaturalLanguageAxiom "Every blanking cap pipe union is a cap that bears a closure function and has a female union sub and a threaded pipe cap as component parts, screwed together to close off fluid flow."@en ; iof-av:firstOrderLogicAxiom "∀x (BlankingCapPipeUnion(x) → Cap(x) ∧ ∃f (ClosureFunction(f) ∧ bearerOf(x,f)) ∧ ∃u (FemaleUnionSub(u) ∧ hasComponentPartAtAllTimes(x,u)) ∧ ∃c (ThreadedPipeCap(c) ∧ hasComponentPartAtAllTimes(x,c)))"@en ; iof-av:isPrimitive "true"^^xsd:boolean ; iof-av:primitiveRationale "Constructive subtype reusing genus and function unchanged: sufficiency is not asserted so that any two-component threaded closure is not automatically classified into this specific union-sub-plus-cap assembly without confirmation."@en ; :FemaleUnionSub rdf:type owl:Class ; rdfs:subClassOf iof-core:MaterialArtifact ; rdfs:label "female union sub"@en .
Axiomatization Decision LogRegistro de Decisões
1 Identity-Giving FunctionFunção Identitária
Function class
ClosureFunction ⊑ DesignedFunction
Realized in
ClosureProcess ⊑ MaterialContainment
Reused verbatim from the already-enriched genus 'cap' per the constructive-type rule: this closes off a line end just as any cap does, differing only in the two-piece union-sub-plus-cap construction.
2 Genus DeterminationDeterminação do Gênero
Capbfo:Object (BFO_0000030)
Primary source explicitly describes the concept as 'an assembly of a female union sub... and a threaded cap... screwed onto the union sub to close off fluid flow' -- the same closure purpose as the already-enriched genus Cap, but constructed as a physically-connected, removable two-piece assembly (union sub + cap) rather than a single-piece cap body, so genus_bfo_root is narrowed to Assembly (⊑ MaterialArtifact, not disjoint from Cap's own root) rather than inherited unchanged.
3 Differentia SpecificaDiferença Específica
∃hasComponentPartAtAllTimes.FemaleUnionSub ⊓ ∃hasComponentPartAtAllTimes.ThreadedPipeCap

A two-piece line-termination assembly: a female union sub with a threaded end, permanently fitted to the pipe, onto which a threaded pipe cap is screwed to close off fluid flow -- distinguishing it from a simple one-piece pipe cap.

Both named components are verbatim in the primary definition. Reusing the already-enriched ThreadedPipeCap (id 1128) as a component part is a direct, source-grounded cross-reference: the definition's 'a threaded cap that is screwed onto the union sub' names exactly that class.
4 Necessary PartsPartes Necessárias
Part classParentRelation
FemaleUnionSubMaterialArtifacthasComponentPartAtAllTimes
Only FemaleUnionSub is asserted as a structured necessary_parts entry. The definition's 'threaded cap' component is this session's own already-enriched ThreadedPipeCap class (id 1128) -- deliberately NOT re-declared here as a necessary_parts stub, to avoid emitting a second, redundant owl:Class declaration for an IRI that already carries its own full axiom set elsewhere in the same published file; the relationship is documented in differentia_nl/cross_standard_notes as prose instead.
Process Participation SignatureAssinatura de Participação em Processo
InputsEntradas
—
OutputsSaídas
—
TransformationTransformação
no fluid participants -- the assembly closes off an open pipe end, a passive protective/sealing role
Same passive-closure signature as the genus Cap.
MetadataMetadados
COPI IDCOPI IDCOPI_0000744
IRIIRIhttps://www.inf.ufrgs.br/ontologies/copi/COPI_0000744
StatusStatusvalidated
Axiom modeModonecessary
CreatedCriado2026-09-10
UpdatedAtualizado2026-09-10
LLM modelModelo LLMclaude-sonnet-5
VersionVersão2026-10-07
Quick factsDados rápidos
GenusGêneroCap
Root classClasse raizAssembly
Axiom modeModonecessary
FunctionFunçãoClosureFunction
ProcessProcessoClosureProcess
PartsPartes1
Source DefinitionsDefinições nas Fontes 1 source
ISO 15926-4 BLANKING CAP PIPE UNION
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.
Provenance tiersCamadas de proveniência secondary: none
?
How much independent secondary research backs this term — not how correct it is. "Full" means a non-primary source was quoted directly and covered several distinct aspects of the concept, not just its function. "Partial" means secondary research happened but covered less. "None" means only the primary definition was used. A "full" term can still contain an error, and a "none" term can still be entirely correct — this tracks whether the research step ran, not the result.Quanto de pesquisa secundária independente sustenta este termo — não o quão correto ele é. "Full" significa que uma fonte não-primária foi citada literalmente e cobriu vários aspectos distintos do conceito, não apenas sua função. "Partial" significa que houve pesquisa secundária, mas com cobertura menor. "None" significa que só a definição primária foi usada. Um termo "full" ainda pode conter um erro, e um termo "none" ainda pode estar totalmente correto — isso rastreia se a etapa de pesquisa ocorreu, não o resultado.
primarystandardverbatimiso15926[structure, mechanism, function]
A <BLANKING CAP PIPE UNION> is a <PIPING COMPONENT> that is an assembly of a female union sub with threaded end and a threaded cap that is screwed onto the union sub to close off fluid flow

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