exported
equivalent
cathodic protection system
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Cathodicprotectionsystem
Generated on 2026-04-16
Natural Language Definition
EN
A cathodic protection system is a corrosion protection system that uses electrochemical cathodic protection mechanisms with anodes to prevent corrosion of carbon and low-alloy steel equipment or structures.
PT-BR
Um sistema de proteção catódica é um sistema de proteção contra corrosão que usa mecanismos eletroquímicos de proteção catódica com ânodos para prevenir a corrosão de equipamentos ou estruturas de aço carbono e baixa liga.
Formal Axioms
Semi-formal (Aristotelian)
Every cathodic protection system is a corrosion protection system that bears a cathodic protection function and has anodes as component parts.
First-Order Logic Theory
Loading…
▸ Stored override
∀x(CathodicProtectionSystem(x) ↔ CorrosionProtectionSystem(x) ∧ ∃f(CathodicProtectionFunction(f) ∧ bearerOf(x,f)) ∧ ∃a(Anode(a) ∧ hasComponentPartAtSomeTime(x,a)))
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: CathodicProtectionSystem
<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_0000427 rdf:type owl:Class ; # CathodicProtectionFunction
rdfs:subClassOf iof-core:DesignedFunction ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000428 # CathodicProtectionProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000428 # CathodicProtectionProcess
] ;
rdfs:label "cathodic protection function"@en ;
rdfs:label "função de proteção catódica"@pt-br .
### Process type
:COPI_0000428 rdf:type owl:Class ; # CathodicProtectionProcess
rdfs:subClassOf iof-core:PlannedProcess ;
rdfs:label "cathodic protection process"@en ;
rdfs:label "processo de proteção catódica"@pt-br .
:COPI_0000428 # CathodicProtectionProcess
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasInput ;
owl:someValuesFrom iof-core:MaterialArtifact # MetallicStructure
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasSpecifiedOutput ;
owl:someValuesFrom iof-core:MaterialArtifact # MetallicStructure
] .
### Equipment universal: CathodicProtectionSystem
:COPI_0000223 rdf:type owl:Class ; # CathodicProtectionSystem
owl:equivalentClass [
rdf:type owl:Class ;
owl:intersectionOf (
iof-core:EngineeredSystem
[
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000196 ; # bearerOf — ObjectAggregate branch
owl:someValuesFrom :COPI_0000427 # CathodicProtectionFunction
]
[
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasComponentPartAtSomeTime ;
owl:someValuesFrom :COPI_0000212 # Anode
]
)
] ;
rdfs:label "cathodic protection system"@en ;
rdfs:label "sistema de proteção catódica"@pt-br ;
iof-av:naturalLanguageDefinition "A cathodic protection system is a corrosion protection system that uses electrochemical cathodic protection mechanisms with anodes to prevent corrosion of carbon and low-alloy steel equipment or structures."@en ;
skos:definition "A cathodic protection system is a corrosion protection system that uses electrochemical cathodic protection mechanisms with anodes to prevent corrosion of carbon and low-alloy steel equipment or structures."@en ;
iof-av:naturalLanguageDefinition "Um sistema de proteção catódica é um sistema de proteção contra corrosão que usa mecanismos eletroquímicos de proteção catódica com ânodos para prevenir a corrosão de equipamentos ou estruturas de aço carbono e baixa liga."@pt-br ;
rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000196 ; owl:someValuesFrom :COPI_0000383 ] ;
skos:definition "[ISO 15926-4] A <CATHODIC PROTECTION SYSTEM> is an <ARTEFACT> and a <CORROSION PROTECTION SYSTEM> using sacrificial anodes or impressed current anodes offering material and giving protection to carbon and low-alloy steel equipment or structures"@en ;
skos:definition "[CFIHOS] A corrosion protection system using sacrificial anodes or impressed current anodes offering material and giving protection to carbon and low-alloy steel equipment or structures."@en .
:COPI_0000212 rdf:type owl:Class ; # Anode
rdfs:subClassOf iof-core:MaterialArtifact ;
rdfs:label "ânodo"@pt-br ;
rdfs:label "anode"@en .
Axiomatization Decision Log
1
Identity-Giving Function
Function class
CathodicProtectionFunction
⊑ DesignedFunction
Realized in
CathodicProtectionProcess
⊑ PlannedProcess
The identity-giving function is the electrochemical protection of metal structures by making them cathodic, thereby preventing corrosion. This is achieved through either sacrificial anodes or impressed current systems that provide electrons to the protected structure.
2
Genus Determination
EngineeredSystem
bfo:ObjectAggregate (BFO_0000027)
Collection of interacting Objects with a designed function.
EngineeredSystem ≡ System ⊓ ∃bearerOf.DesignedFunction,
where System ⊑ bfo:ObjectAggregate.
No single causal boundary spans all member objects.
Based on ISO 15926 hierarchy, this is explicitly stated as a subtype of CORROSION PROTECTION SYSTEM. This is the most specific appropriate superclass. Since cathodic protection systems typically comprise multiple interacting components (anodes, rectifiers, reference electrodes, cables) working together without a single causal boundary, the BFO root is EngineeredSystem rather than Assembly.
3
Necessary Parts
| Part class | Parent | Relation |
|---|---|---|
| Anode | MaterialArtifact | hasComponentPartAtSomeTime |
Anodes are universally required for the electrochemical protection mechanism, while the protected structure is the target participant that defines the system's purpose.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
MetallicStructure
— carbon or low-alloy steel requiring protection
Outputs (O)
MetallicStructure
— electrochemically protected from corrosion
Transformation (T)
electrochemical transformation - electron transfer making protected structure cathodic
The process signature involves electrical current flow and electrochemical transformation of the protected structure's surface potential to prevent corrosion.
5
Axiom Mode Decision
Necessary + Sufficient
— modelled as a defined class
(≡, EquivalentClass). Automatic classification is
appropriate for this concept.
Cross-Standard Observations
ISO 15926 and CFIHOS definitions are consistent, both emphasizing the electrochemical protection mechanism using anodes. The explosion protection properties from CFIHOS are relevant for hazardous area installations but are not identity-giving characteristics.
