prikaz prve stranice dokumenta Procjena pouzdanosti opreme tijekom životnog vijeka metodama vjerojatnosne analize sigurnosti
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doctoral thesis
Procjena pouzdanosti opreme tijekom životnog vijeka metodama vjerojatnosne analize sigurnosti
Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2004. urn:nbn:hr:168:084745
Vrbanić, Ivan
University of Zagreb
Faculty of Electrical Engineering and Computing
Department of Energy and Power Systems

Institutional repository: FER Repository

Cite this document

Vrbanić, I. (2004). Procjena pouzdanosti opreme tijekom životnog vijeka metodama vjerojatnosne analize sigurnosti (Doctoral thesis). Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing. Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:084745

Vrbanić, Ivan. "Procjena pouzdanosti opreme tijekom životnog vijeka metodama vjerojatnosne analize sigurnosti." Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2004. https://urn.nsk.hr/urn:nbn:hr:168:084745

Vrbanić, Ivan. "Procjena pouzdanosti opreme tijekom životnog vijeka metodama vjerojatnosne analize sigurnosti." Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2004. https://urn.nsk.hr/urn:nbn:hr:168:084745

Vrbanić, I. (2004). 'Procjena pouzdanosti opreme tijekom životnog vijeka metodama vjerojatnosne analize sigurnosti', Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 13 June 2024, https://urn.nsk.hr/urn:nbn:hr:168:084745

Vrbanić I. Procjena pouzdanosti opreme tijekom životnog vijeka metodama vjerojatnosne analize sigurnosti [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2004 [cited 2024 June 13] Available at: https://urn.nsk.hr/urn:nbn:hr:168:084745

I. Vrbanić, "Procjena pouzdanosti opreme tijekom životnog vijeka metodama vjerojatnosne analize sigurnosti", Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2004. Available at: https://urn.nsk.hr/urn:nbn:hr:168:084745

Metadata
TitleProcjena pouzdanosti opreme tijekom životnog vijeka metodama vjerojatnosne analize sigurnosti
AuthorIvan Vrbanić
MentorVladimir Mikuličić (mentor)
Committee memberDanilo Feretić (član povjerenstva)
Committee memberVladimir Mikuličić (član povjerenstva)
Committee memberŽeljko Bogdan (član povjerenstva)
Committee memberDubravko Pevec (član povjerenstva)
Committee memberNenad Debrecin (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Electrical Engineering and Computing
(Department of Energy and Power Systems)
Zagreb
Defense date and country2004-12-22, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Power Engineering
Universal decimal classification
(UDC)		620 - Materials testing. Power stations. Economics of energy
004 - Computer science and technology. Computing. Data processing
Abstract
Disertacija razmatra procjenu pouzdanosti opreme tijekom životnog vijeka utemeljenu na metodama vjerojatnosne analize sigurnosti. Koristi se vremenski ovisan model rastuće brzine kvara utemeljen na Weibullovoj raspodjeli. Učinak servisiranja opreme je uključen u model rastuće brzine kvara metodom srazmjernog smanjenja stupnja starosti, pomoću faktora poboljšanja. Ovaj model korišten je za vremenski ovisnu procjenu dvaju najvažnijih parametara opreme kod vjerojatnosne analize sigurnosti: brzinu kvara opreme u pogonu i neraspoloživost uslijed kvara opreme u stanju pripravnosti. Odgovarajući parametri modela procjenjuju se Bayesovom analizom. Za potrebe Bayesove analize, definirane su funkcije vjerodostojnosti za slučaj s opremom u pogonu, te za slučaj s opremom u stanju pripravnosti. Postupak procjene parametara i predviđanja vremenski ovisnih pokazatelja pouzdanosti demonstriran je, za oba razmatrana slučaja, na primjerima s pretpostavljenim pogonskim povijestima i strategijama održavanja opreme. Uključen je i primjer s uzastopnom provedbom Bayesove analize. Postupak procjene vremenski ovisnih parametara opreme primijenjen je na odabranu sigurnosnu opremu uključenu u model vjerojatnosne analize sigurnosti nuklearne elektrane. Uključeni su prikazi dobivenih rezultata s opažanjima i tumačenjima. Disertacija se završava zaključcima i preporukama za daljnja istraživanja.
Abstract (english)
Doctoral thesis deals with evaluation of life cycle equipment reliability based on methods of probabilistic safety assessment. Time-dependent model of increasing failure rate is used based on Weibull distribution. The effect of equipment overhauls is incorporated into the model of increasing failure rate by means of proportional age reduction method, with improvement factor. This model is used for time dependent assessment of the two most important parameters in probabilistic safety assessment: failure rate of equipment in operating state and unavailability of equipment due to failure in standby state. Appropriate parameters are estimated by Bayesian analysis. For the purpose of Bayesian analysis, likelihood functions were defined for the case of operating equipment, as well as equipment in standby state. The process of parameters' estimate and prediction of time dependent reliability indicators has been demonstrated, for both cases considered, on examples with assumed operational histories and maintenance strategies. Example with successive implementation of Bayesian analysis is also included. The process of time-dependent parameters' estimate has been applied to selected safety class equipment included in probabilistic safety analysis model of nuclear power plant. The results obtained are presented, together with observations and interpretations. Doctoral thesis ends with conclusions and recommendations for further research.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:168:084745
Study programmeTitle: Doctoral study programme "Electrical Engineering and Computing"
Study programme type: university
Study level: postgraduate
Academic / professional title: doktor/doktorica znanosti, po-dručje tehničkih znanosti (doktor/doktorica znanosti, po-dručje tehničkih znanosti)
Type of resourceText
File originBorn digital
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Created on2019-06-26 07:42:06