Please use this identifier to cite or link to this item: https://hdl.handle.net/10316.2/33329
DC FieldValueLanguage
dc.contributor.authorHamodi, Hussan
dc.contributor.authorLundberg, Jan
dc.date.accessioned2014-09-08T15:03:17Z
dc.date.accessioned2020-09-10T09:00:28Z-
dc.date.available2014-09-08T15:03:17Z
dc.date.available2020-09-10T09:00:28Z-
dc.date.issued2014-
dc.identifier.isbn978-972-8954-42-0 (PDF)
dc.identifier.urihttps://hdl.handle.net/10316.2/33329-
dc.description.abstractThis paper presents a practical model to calculate the optimal replacement time (ORT) of drilling rigs used in underground mining. As a case study, cost data for drilling rig were collected over four years from a Swedish mine. The cost data include acquisition, operating, maintenance and downtime costs when using a redundant rig. A discount rate is used to determine the value of these costs over time. The study develops an optimisation model to identify the ORT of a mining drilling rig which represents a key performance indicator. It uses an artificial neural network (ANN) technique to identify the effect of the various cost factors on the ORT. The absolute ORT in the case study is 87 months, and there is an optimal replacement range within which the company can replace the rig. The results also show that the redundant rig cost has the largest impact on the ORT followed by acquisition, maintenance and operating costs. Regression analysis shows a linear relationship between the cost factors and the ORT of the drilling rig.eng
dc.language.isoeng-
dc.publisherImprensa da Universidade de Coimbrapor
dc.publisherFaculdade de Ciências e Tecnologia da Universidade de Coimbra, Departamento de Engenharia Mecânicapor
dc.relation.ispartofColecao:http://hdl.handle.net/10316.2/33309por
dc.rightsopen access-
dc.subjectcapital equipmenteng
dc.subjectdecision support modelseng
dc.subjectlife cycle costeng
dc.subjectoptimal replacement timeeng
dc.subjectoptimisation modeleng
dc.titleReplacement time of mining drilling rigspor
dc.typebookPartpor
uc.publication.firstPage119-
uc.publication.lastPage124-
uc.publication.locationCoimbrapor
dc.identifier.doi10.14195/978-972-8954-42-0_17-
uc.publication.digCollectionPBpor
uc.publication.orderno17-
uc.publication.areaCiências da Engenharia e Tecnologiaspor
uc.publication.bookTitleProceedings of Maintenance Performance Measurement and Management (MPMM) Conference 2014-
uc.publication.manifesthttps://dl.uc.pt/json/iiif/10316.2/33329/212079/manifest?manifest=/json/iiif/10316.2/33329/212079/manifest-
uc.publication.thumbnailhttps://dl.uc.pt/retrieve/11181107-
uc.publication.parentItemId53866-
uc.itemId70448-
item.fulltextWith Fulltext-
item.grantfulltextopen-
Appears in Collections:Proceedings of Maintenance Performance Measurement and Management (MPMM) Conference 2014
Files in This Item:
File Description SizeFormat 
mpmm_artigo17.pdf2.03 MBAdobe PDFThumbnail
  
See online
Show simple item record

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.