exported
necessary
pump casing
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Pumpcasing
Generated on 2026-05-04
Natural Language Definition
EN
A casing that surrounds an impeller and has integral suction and discharge nozzles as structural components, typically applied in centrifugal pumps.
PT-BR
Um invólucro que envolve um impulsor e possui bocais de sucção e descarga integrais como componentes estruturais, tipicamente aplicado em bombas centrífugas.
Formal Axioms
Semi-formal (Aristotelian)
Every pump casing is a casing that has an enclosure function and has a suction nozzle as a component part.
First-Order Logic Theory
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▸ Stored override
∀x (PumpCasing(x) → (Casing(x) ∧ ∃f(EnclosureFunction(f) ∧ hasFunction(x,f)) ∧ ∃p(SuctionNozzle(p) ∧ hasComponentPartAtAllTimes(x,p))))
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: PumpCasing
<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
:COPI_0000500 rdf:type owl:Class ; # EnclosureFunction
rdfs:subClassOf iof-core:DesignedFunction ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000501 # EnclosureProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000501 # EnclosureProcess
] ;
rdfs:label "enclosure function"@en ;
rdfs:label "função de proteção e invólucro"@pt-br ;
iof-av:naturalLanguageDefinition "A DesignedFunction that is realized in an EnclosureProcess and that consists in providing a protective boundary around internal components while maintaining structural integrity and enabling controlled fluid flow through integral connection points."@en ;
skos:definition "A DesignedFunction that is realized in an EnclosureProcess and that consists in providing a protective boundary around internal components while maintaining structural integrity and enabling controlled fluid flow through integral connection points."@en .
### Process type
:COPI_0000501 rdf:type owl:Class ; # EnclosureProcess
rdfs:subClassOf iof-core:PlannedProcess ;
rdfs:label "enclosure process"@en ;
rdfs:label "processo de proteção e invólucro"@pt-br ;
iof-av:naturalLanguageDefinition "A PlannedProcess in which a casing provides protective containment around mechanical components while enabling controlled fluid passage through designed openings and maintaining pressure boundaries."@en ;
skos:definition "A PlannedProcess in which a casing provides protective containment around mechanical components while enabling controlled fluid passage through designed openings and maintaining pressure boundaries."@en .
### Equipment universal: PumpCasing
:COPI_0000335 rdf:type owl:Class ; # PumpCasing
rdfs:subClassOf :COPI_0000222 ; # Casing
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000500 # EnclosureFunction
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasComponentPartAtAllTimes ;
owl:someValuesFrom :COPI_0000738 # SuctionNozzle
] ;
rdfs:label "pump casing"@en ;
rdfs:label "carcaça de bomba"@pt-br ;
iof-av:naturalLanguageDefinition "A casing that surrounds an impeller and has integral suction and discharge nozzles as structural components, typically applied in centrifugal pumps."@en ;
skos:definition "A casing that surrounds an impeller and has integral suction and discharge nozzles as structural components, typically applied in centrifugal pumps."@en ;
iof-av:naturalLanguageDefinition "Um invólucro que envolve um impulsor e possui bocais de sucção e descarga integrais como componentes estruturais, tipicamente aplicado em bombas centrífugas."@pt-br ;
iof-av:semiFormalNaturalLanguageAxiom "Every pump casing is a casing that has an enclosure function and has a suction nozzle as a component part."@en ;
iof-av:firstOrderLogicAxiom "∀x (PumpCasing(x) → (Casing(x) ∧ ∃f(EnclosureFunction(f) ∧ hasFunction(x,f)) ∧ ∃p(SuctionNozzle(p) ∧ hasComponentPartAtAllTimes(x,p))))"@en ;
iof-av:isPrimitive "true"^^xsd:boolean ;
iof-av:primitiveRationale "Constructive type based on physical configuration. Under Open World Assumption, structural characteristics are harder to make sufficient - any assembly with an impeller and integral nozzles might be classified as a pump casing even if it serves a different specialized purpose. Starting with necessary conditions protects against false positives."@en ;
skos:definition "[ISO 15926-4] A <PUMP CASING> is a <CASING> and a single wall surrounding the impeller. The suction and discharge nozzles form an integral part of the casing. Typically applied for centrifugal pumps"@en .
:COPI_0000738 rdf:type owl:Class ; # SuctionNozzle
rdfs:subClassOf iof-core:MaterialArtifact ;
rdfs:label "bocal de sucção"@pt-br ;
rdfs:label "suction nozzle"@en .
Axiomatization Decision Log
1
Identity-Giving Function
Function class
EnclosureFunction
⊑ DesignedFunction
Realized in
EnclosureProcess
⊑ PlannedProcess
Reusing the EnclosureFunction already identified for the parent class 'casing'. A pump casing shares the same fundamental function as any casing - providing protective enclosure - with the specialization being structural/geometric rather than functional.
2
Genus Determination
Casing
From the parent_candidates, 'casing' is listed as already enriched in our ontology. The definition explicitly states 'A <PUMP CASING> is a <CASING>', making this the most specific appropriate superclass. Casing is more specific than Assembly and captures the containment/enclosure role that distinguishes casings from other assemblies.
3
Necessary Parts
| Part class | Parent | Relation |
|---|---|---|
| SuctionNozzle | MaterialArtifact | hasComponentPartAtAllTimes |
The definition explicitly states that suction and discharge nozzles 'form an integral part of the casing', making them necessary components. However, neither SuctionNozzle nor DischargeNozzle appear in the Known Component Terms list, so names are set to null per the naming constraint.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
—
Outputs (O)
—
Transformation (T)
structural containment of rotating impeller while enabling fluid flow through integral connection points
As a structural component, the pump casing does not directly participate in fluid transformation processes. Its process signature is empty because it provides passive containment rather than active transformation. The transformation describes its structural role in enabling the pump's operation through containment and flow guidance.
5
Axiom Mode Decision
Necessary conditions only
— modelled as a primitive universal
(⊑, SubClassOf). Identity is grounded in designed
function and cannot be reduced to a property checklist.
Constructive type based on physical configuration. Under Open World Assumption, structural characteristics are harder to make sufficient - any assembly with an impeller and integral nozzles might be classified as a pump casing even if it serves a different specialized purpose. Starting with necessary conditions protects against false positives.
Cross-Standard Observations
Only one source definition available (ISO 15926-4). No cross-standard divergences to detect. Definition is clear and structurally focused.