Core Ontology for Petroleum Installations · INF-UFRGS-Ontologies · CNPq INF-UFRGS-ENERGIA inf.ufrgs.br/ontologies/copi dee69df
ISA 5.1 symbol for positive displacement pump
exported necessary
positive displacement pump
IRI: http://www.inf.ufrgs.br/ontologies/copi#Positivedisplacementpump
Generated on 2026-04-15
Natural Language Definition
EN
A positive displacement pump is a pump that transports liquid through reciprocating or rotary displacement principle with fixed displacement volume per cycle.
PT-BR
Uma bomba de deslocamento positivo é uma bomba que transporta líquido através do princípio de deslocamento alternativo ou rotativo com volume de deslocamento fixo por ciclo.
Formal Axioms
Semi-formal (Aristotelian)
Every positive displacement pump is a pump that has a displacement mechanism as component part at all times and participates in positive displacement processes.
First-Order Logic Theory
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▸ Stored override ∀x(PositiveDisplacementPump(x) → Pump(x) ∧ ∃y(DisplacementMechanism(y) ∧ hasComponentPartAtAllTimes(x,y)) ∧ ∃z(PositiveDisplacementProcess(z) ∧ participatesIn(x,z)))
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: PositiveDisplacementPump <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 "2026-10-08"^^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_0000066 rdf:type owl:Class ; # PumpingFunction rdfs:subClassOf iof-core:DesignedFunction ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:allValuesFrom :COPI_0000616 # PumpingProcess ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:someValuesFrom :COPI_0000616 # PumpingProcess ] ; rdfs:label "pumping function"@en ; rdfs:label "função de bombeamento"@pt-br . ### Process type :COPI_0000616 rdf:type owl:Class ; # PumpingProcess rdfs:subClassOf :COPI_0000003 ; # MomentumTransfer rdfs:label "pumping process"@en ; rdfs:label "processo de bombeamento"@pt-br . :COPI_0000003 rdf:type owl:Class . # MomentumTransfer :COPI_0000616 # PumpingProcess rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasInput ; owl:someValuesFrom :COPI_0000038 # PortionOfLiquid ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasSpecifiedOutput ; owl:someValuesFrom :COPI_0000038 # PortionOfLiquid ] . ### Equipment universal: PositiveDisplacementPump :COPI_0000331 rdf:type owl:Class ; # PositiveDisplacementPump rdfs:subClassOf :COPI_0000072 ; # Pump rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart) owl:someValuesFrom :COPI_0000066 # PumpingFunction ] ; rdfs:label "positive displacement pump"@en ; rdfs:label "bomba de deslocamento positivo"@pt-br ; iof-av:naturalLanguageDefinition "A positive displacement pump is a pump that transports liquid through reciprocating or rotary displacement principle with fixed displacement volume per cycle."@en ; skos:definition "A positive displacement pump is a pump that transports liquid through reciprocating or rotary displacement principle with fixed displacement volume per cycle."@en ; iof-av:naturalLanguageDefinition "Uma bomba de deslocamento positivo é uma bomba que transporta líquido através do princípio de deslocamento alternativo ou rotativo com volume de deslocamento fixo por ciclo."@pt-br ; iof-av:semiFormalNaturalLanguageAxiom "Every positive displacement pump is a pump that has a displacement mechanism as component part at all times and participates in positive displacement processes."@en ; iof-av:firstOrderLogicAxiom "∀x(PositiveDisplacementPump(x) → Pump(x) ∧ ∃y(DisplacementMechanism(y) ∧ hasComponentPartAtAllTimes(x,y)) ∧ ∃z(PositiveDisplacementProcess(z) ∧ participatesIn(x,z)))"@en ; iof-av:isPrimitive "true"^^xsd:boolean ; iof-av:primitiveRationale "Constructive type defined by physical mechanism. Under OWA, sufficient conditions based on displacement mechanism alone could lead to false positives where specialized equipment containing displacement elements might be incorrectly classified as standard positive displacement pumps."@en ; skos:definition "[ISO 15926-4] A <POSITIVE DISPLACEMENT PUMP> is an <ARTEFACT> and a <PUMP> intended to transport liquid through the reciprocating or rotary displacement principle and with either fixed or adjustable volume flow rates. NOTE - Combine with either BARE PUMP or PUMP SYSTEM,"@en ; skos:definition "[SLB Glossary] A type of fluid pump in which the displacement volume of the pump is fixed for each rotation of the pump."@en .
Axiomatization Decision Log
1 Identity-Giving Function
Function class
PumpingFunction ⊑ DesignedFunction
Realized in
PumpingProcess ⊑ MomentumTransfer
The identity-giving function is pumping - transporting liquid by adding mechanical energy. This is the same function shared by all pump types including centrifugal pumps already in the ontology.
2 Genus Determination
Pump
Pump is the most specific appropriate superclass from the parent_candidates and is already enriched in our ontology. It provides the PumpingFunction and Assembly structure that positive displacement pumps inherit. More specific than the generic Assembly but captures the essential pumping identity.
3 Necessary Parts

No necessary parts recorded (concept may be primitive at this level).

The displacement mechanism is the key differentiating part that enables the positive displacement operating principle. The pump casing is inherited but still necessary.
4 Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PortionOfLiquid — any liquid phase
Outputs (O)
PortionOfLiquid — same liquid at higher pressure and/or different location
Transformation (T)
mechanical energy added to liquid through positive displacement mechanism with fixed volume per cycle
Same basic pumping signature as other pumps but with the specific transformation mechanism being positive displacement rather than dynamic principles.
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 defined by physical mechanism. Under OWA, sufficient conditions based on displacement mechanism alone could lead to false positives where specialized equipment containing displacement elements might be incorrectly classified as standard positive displacement pumps.
Cross-Standard Observations
ISO 15926 provides more detail about reciprocating/rotary mechanisms and fixed/adjustable flow rates, while SLB focuses on the fixed displacement volume characteristic. Both emphasize the positive displacement operating principle as the key distinguishing feature.

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