Višeciljno donošenje odluke o strategiji održavanja broda uzimajući u obzir utjecaj na okoliš

Belamarić, Branko and Žanić, Vedran and Prebeg, Pero (2014) Višeciljno donošenje odluke o strategiji održavanja broda uzimajući u obzir utjecaj na okoliš. = Multiattribute decision making methodology for maintenance strategy with ecological considerations. In: XXI. simpozij Teorija i praksa brodogradnje, in memoriam prof. Leopold Sorta = The 21st symposium Theory and practice shipbuilding, in memoriam prof. Leopold Sorta, 02-04.10.2014., Baška; Croatia.

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MULTIATTRIBUTE DECISION MAKING METHODOLOGY FOR MAINTENANCE STRATEGY WITH ECOLOGICAL CONSIDERATIONS.pdf - Published Version Jezik dokumenta:English

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Abstract (Croatian)

Veliki je broj čimbenika okoliša i deteriorativnih uvjeta u službi broda koji utječu na sposobnost održanja brzine broda u određenom vremenskom periodu. Utjecaj hrapavosti oplakane površine iznimno je važan za poslovanje broda. Ispitivanjem utjecaja oplakane površine na brzinu i snagu, dokazano je da se hrapavost brodova u službi godinama kontinuirano povećava te se zahtijeva veća snaga za održanje izvorne brzine. Za potrebe više-atributne sinteze (optimizacijske metode) za kreiranje projekta poslovanja broda, razvijeni su i objedinjeni slijedeći modeli: (1) model porasta otpora, (2) ekonomski model prihoda i rashoda poslovanja, (3) ekološki model vezan za ispuštanje biocida iz antivegetativnih premaza, (4) model obrade oplakane površine. Tri kriterija (atributi i ciljevi) koja definiraju jezgru procesa odlučivanja su ekonomski kriterij (profit brodovlasnika), ekološki kriterij (stupanj zagađenja-dinamika izlučivanja biocida iz antivegetativnih (AV) premaza te kriterij društvene koristi (dostupnost-maksimalni broj putovanja). Optimizacija postupka održavanja površine trupa vršena je variranjem operacija čišćenja i premazivanja. Model uključuje promjenu pripadajućih performansi i ekonomskih efekata u ovisnosti o brzini broda, intervalima dokiranja, planiranim troškovima goriva i drugim relevantnim troškovima u luci i plovidbi. Primjenom prikazanih modela, analizirana je strategija poslovanja Suezmax tankera koja s dovoljnom točnošću/pouzdanošću može poslužiti brodovlasniku pri optimizaciji strategije poslovanja ovisnoj o ekonomskim učincima i utjecaju na okoliš.

Abstract

Environmental/deteriorative factors related to the operation of a ship affect its ability to maintain speed over a period of time. The impact of hull roughness on the economics of operations have indicated that as ships become measurably rougher each year in service, it slows down, or demands more fuel for a given speed. Decision support problem for the ship operation strategy is presented using multi-attribute synthesis procedure. Models applied: (1) friction resistance model, (2) income/expenses economy model, (3) antifouling paint (biocide-leaching) ecology model; (4) wetted surface treatment model. Criteria functions (attributes/objectives) form the core of the decision making process: the economy i.e. profit; pollution i.e. biocide emissions from antifouling coatings and accessibility i.e. number of voyages. Optimization of hull surface management practices is described including variation of optimum hull cleaning and coating schedules. Ship performance and economic benefits with respect to: speed, optimum docking intervals, fuel, relevant voyage/port cost projections, port fouling severity, biocide emission and wetted (steel substratum) surface blasting procedures, are discussed. The Suezmax tanker operation strategy, regarding improvement of ship operation (using multicriterial decision making), presents an improvement with a reasonable reliability/accuracy for the ship-owner’s definition of management strategy, based on economical and environmental aspects.

Item Type: Conference or Workshop Item (Lecture)
Uncontrolled Keywords: hrapavost substrata; otpor trenja; antivegetativni i antikorozivni premazi; obraštaj
Keywords (Croatian): hull roughness; friction resistance; anticorrosive and antifouling coatings; fouling
Subjects: TECHNICAL SCIENCE > Shipbuilding
Divisions: 600 Department of Naval Engineering and Marine Technology > 620 Chair of Marine Structures Design
Indexed in Web of Science: No
Indexed in Current Contents: No
Date Deposited: 18 May 2015 07:46
Last Modified: 25 Oct 2017 09:24
URI: http://repozitorij.fsb.hr/id/eprint/4173

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