{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,28]],"date-time":"2026-01-28T00:24:24Z","timestamp":1769559864161,"version":"3.49.0"},"reference-count":34,"publisher":"ASME International","issue":"2","content-domain":{"domain":["asmedigitalcollection.asme.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2018,4,1]]},"abstract":"<jats:p>Operations and maintenance activities have a significant impact on the energy cost for offshore wind turbines. Analytical methods such as reliability block diagrams and Markov processes along with simulation approaches have been widely used in planning and optimizing operations and maintenance actions in industrial systems. Generalized stochastic Petri nets (GSPNs) with predicates coupled with Monte Carlo simulation (MCS) are applied in this paper to model the planning of operations and maintenance activities of an offshore wind turbine. The merits of GSPN in modeling complex and multicomponent systems are addressed. Three maintenance categories classified according to the size and weight of the components to be replaced and the logistics involved, such as vessels, maintenance crew and spares and, the associated delays, and costs are included in the model. The weather windows for accessing the wind turbine are also modeled. Corrective maintenance (CM) based on replacements and age-dependent preventive maintenance (PM) with imperfect repair are modeled and compared in terms of the wind turbine's performance (e.g., availability and loss production) and of the operations and maintenance costs.<\/jats:p>","DOI":"10.1115\/1.4038934","type":"journal-article","created":{"date-parts":[[2018,1,11]],"date-time":"2018-01-11T12:07:28Z","timestamp":1515672448000},"update-policy":"https:\/\/doi.org\/10.1115\/crossmarkpolicy-asme","source":"Crossref","is-referenced-by-count":32,"title":["Maintenance Planning of an Offshore Wind Turbine Using Stochastic Petri Nets With Predicates"],"prefix":"10.1115","volume":"140","author":[{"given":"F. P.","family":"Santos","sequence":"first","affiliation":[{"name":"Centre for Marine Technology and Ocean Engineering (CENTEC), Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, n\u00b0 1, Lisboa 1049-001, Portugal e-mail:"}]},{"given":"A. P.","family":"Teixeira","sequence":"additional","affiliation":[{"name":"Centre for Marine Technology and Ocean Engineering (CENTEC), Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, n\u00b0 1, Lisboa 1049-001, Portugal e-mail:"}]},{"given":"C.","family":"Guedes Soares","sequence":"additional","affiliation":[{"name":"Mem. ASME Centre for Marine Technology and Ocean Engineering (CENTEC), Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, n\u00b0 1, Lisboa 1049-001, Portugal e-mail:"}]}],"member":"33","published-online":{"date-parts":[[2018,2,8]]},"reference":[{"key":"2019100617570558500_bib1","doi-asserted-by":"publisher","first-page":"218","DOI":"10.1016\/j.ress.2010.07.007","article-title":"On Risk-Based Operation and Maintenance of Offshore Wind Turbine Components","volume":"96","year":"2011","journal-title":"Reliab. Eng. Syst. 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