This is a copy of the ROMAIN maintenance ontology described in Applied Ontology paper:
Karray, Mohamed Hedi et al. ‘ROMAIN: Towards a BFO Compliant Reference Ontology for Industrial Maintenance’. 1 Jan. 2019 : 155 – 177.
The home base of the ontology referenced in this paper is https://github.com/HediKarray/ReferenceOntologyOfMaintenance