exported
necessary
pump shaft
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Pumpshaft
Generated on 2026-05-04
Natural Language Definition
EN
A pump shaft is a MaterialArtifact that bears a PowerTransmissionFunction and that is equipped with impeller(s), bearings, bushings, and sealing elements as part of a pump assembly for transmitting rotational mechanical energy to enable fluid pumping operations.
PT-BR
Um eixo de bomba é um MaterialArtifact que possui uma PowerTransmissionFunction e que é equipado com impulsor(es), mancais, buchas e elementos de vedação como parte de um conjunto de bomba para transmitir energia mecânica rotacional e possibilitar operações de bombeamento de fluidos.
Formal Axioms
Semi-formal (Aristotelian)
Every pump shaft is a MaterialArtifact that bears a PowerTransmissionFunction, has impeller(s) as component parts, has bearings as component parts, and is part of a pump assembly.
First-Order Logic Theory
Loading…
▸ Stored override
∀x(PumpShaft(x) → MaterialArtifact(x) ∧ ∃f(PowerTransmissionFunction(f) ∧ bearerOf(x,f)) ∧ ∃i(Impeller(i) ∧ hasComponentPartAtAllTimes(x,i)) ∧ ∃b(Bearing(b) ∧ hasComponentPartAtAllTimes(x,b)) ∧ ∃p(Pump(p) ∧ partOf(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: PumpShaft
<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_0000192 rdf:type owl:Class ; # PowerTransmissionFunction
rdfs:subClassOf iof-core:DesignedFunction ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000604 # PowerTransmissionProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000604 # PowerTransmissionProcess
] ;
rdfs:label "power transmission function"@en ;
rdfs:label "função de transmissão de potência"@pt-br ;
iof-av:naturalLanguageDefinition "A DesignedFunction that is realized in a PowerTransmissionProcess and that consists in transmitting mechanical rotational energy from a driving mechanism to driven components, enabling the transfer of torque and rotational motion through a mechanical system."@en ;
skos:definition "A DesignedFunction that is realized in a PowerTransmissionProcess and that consists in transmitting mechanical rotational energy from a driving mechanism to driven components, enabling the transfer of torque and rotational motion through a mechanical system."@en .
### Process type
:COPI_0000604 rdf:type owl:Class ; # PowerTransmissionProcess
rdfs:subClassOf iof-core:PlannedProcess ;
rdfs:label "power transmission process"@en ;
rdfs:label "processo de transmissão de potência"@pt-br ;
iof-av:naturalLanguageDefinition "A PlannedProcess in which mechanical rotational energy is transmitted from a prime mover through a shaft to driven components, resulting in the transfer of torque and rotational motion necessary for equipment operation."@en ;
skos:definition "A PlannedProcess in which mechanical rotational energy is transmitted from a prime mover through a shaft to driven components, resulting in the transfer of torque and rotational motion necessary for equipment operation."@en .
### Equipment universal: PumpShaft
:COPI_0000336 rdf:type owl:Class ; # PumpShaft
rdfs:subClassOf iof-core:MaterialArtifact ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000192 # PowerTransmissionFunction
] ;
rdfs:label "pump shaft"@en ;
rdfs:label "eixo de bomba"@pt-br ;
iof-av:naturalLanguageDefinition "A pump shaft is a MaterialArtifact that bears a PowerTransmissionFunction and that is equipped with impeller(s), bearings, bushings, and sealing elements as part of a pump assembly for transmitting rotational mechanical energy to enable fluid pumping operations."@en ;
skos:definition "A pump shaft is a MaterialArtifact that bears a PowerTransmissionFunction and that is equipped with impeller(s), bearings, bushings, and sealing elements as part of a pump assembly for transmitting rotational mechanical energy to enable fluid pumping operations."@en ;
iof-av:naturalLanguageDefinition "Um eixo de bomba é um MaterialArtifact que possui uma PowerTransmissionFunction e que é equipado com impulsor(es), mancais, buchas e elementos de vedação como parte de um conjunto de bomba para transmitir energia mecânica rotacional e possibilitar operações de bombeamento de fluidos."@pt-br ;
iof-av:isPrimitive "true"^^xsd:boolean ;
iof-av:primitiveRationale "As a constructive type defined by physical configuration, sufficient conditions are omitted to avoid false positives under OWA. Any rotating component with an impeller and bearings could theoretically be classified as a pump shaft under sufficient conditions, including hybrid equipment or specialized assemblies that should not be automatically categorized as standard pump shafts."@en ;
rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000196 ; owl:someValuesFrom :COPI_0000059 ] ;
skos:definition "[ISO 15926-4] A <PUMP SHAFT> is a <SHAFT> of a pump that is provided with impeller(s), bearings, bushings, sealing elements etc."@en .
Axiomatization Decision Log
1
Identity-Giving Function
Function class
PowerTransmissionFunction
⊑ DesignedFunction
Realized in
PowerTransmissionProcess
⊑ PlannedProcess
A pump shaft's core function is to transmit rotational mechanical power from the driver (motor) to the impeller(s). This power transmission function is what makes it a functional shaft rather than just a structural rod. The existing PowerTransmissionFunction from the gearbox enrichment is co-extensional with this requirement.
2
Genus Determination
MaterialArtifact
bfo:Object (BFO_0000030)
Monolithic causally unified material artefact.
MaterialArtifact ≡ Object ⊓ ∃bearerOf.DesignedFunction.
The source definition identifies this as a SHAFT, but no enriched Shaft class exists in the ontology. A shaft is a rotating mechanical component that is essentially monolithic (not an assembly of removable subcomponents) and serves as a single maintainable unit within a pump. This places it under MaterialArtifact rather than Assembly. The pump shaft is not an aggregate of distinct objects, so EngineeredSystem does not apply.
3
Necessary Parts
No necessary parts recorded (concept may be primitive at this level).
While the definition mentions that the pump shaft is 'provided with' impeller(s), bearings, bushings, and sealing elements, these are not intrinsic parts of the shaft itself but rather components mounted on or associated with the shaft. The Known Component Terms list is empty, and the source definition uses 'provided with' rather than 'composed of', suggesting these are associated components rather than constituent parts. Without explicit part names in the sources or component terms list, no parts can be formally defined at this level.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
—
Outputs (O)
—
Transformation (T)
rotational mechanical energy transmitted from driving mechanism to impeller assembly with torque and speed characteristics appropriate for pumping operation
The pump shaft receives rotational mechanical power from a driver (motor, engine, or turbine) and transmits this power to the impeller(s) which then act on the fluid. The transformation is purely mechanical power transmission with potential speed and torque modifications based on the shaft design and coupling arrangements.
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.
As a constructive type defined by physical configuration, sufficient conditions are omitted to avoid false positives under OWA. Any rotating component with an impeller and bearings could theoretically be classified as a pump shaft under sufficient conditions, including hybrid equipment or specialized assemblies that should not be automatically categorized as standard pump shafts.
Cross-Standard Observations
Only one source (ISO 15926-4) provides a definition for pump shaft. No cross-standard comparison possible, but the definition is clear and technically sound, identifying it as a shaft with specific pump-related components.
Source Definitions
1 source
ISO 15926-4
PUMP SHAFT ↗
Definition text withheld (copyrighted standard) — follow the source link above.
Metadata
| Ontology | COPI |
| Research group | INF-UFRGS-Ontologies |
| Funding | CNPq INF-UFRGS-ENERGIA |
| Project | OntoKG / Petrobras |
| ID | #421 |
| Cluster | pump shaft |
| Status | exported |
| Axiom mode | necessary |
| Created | 2026-05-04 |
| Updated | 2026-09-08 |
ISA 5.1-2022 P&ID Symbol
wikimedia/pump.svg
