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A case study on age maintenance policy
Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
2009 (English)Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
Abstract [sv]

Syftet med denna uppsats är att undersöka en komponents    optimala utbyts" tid med hänsyn till kostnad och risk,    och föreslå schemalagda underhåll, med hjälp av statistiska metoder.    Genom att använda statistiska verktyg och historiska data, kan    en komponents samt systemets brister predikteras. När    forskaren vet hur ett system beter sig, kan dess fördelar    exploateras och tas till vara på. Schemaläggning av    förebyggande service, kostnads prognoser samt    uppskattning av förlängda garantier är möjliga fördelar som    kan nyttjas av denna rapport. Detta medför en högre    tillgänglighet och förbättrat rykte hos kund.    Tillförlitligthet teori är en viktigt del av    Total Quality Management, TQM, som säkerhetsställer kvalité.    I denna uppsats jämförs, förklaras och verifieras 2 kända ARP,    och strategin att ersätta endast då komponenten går sönder i en fallstudie.    Denna uppsats indikerar att en ARP med ändlig horisont ger mer optimalta resultat än    en ARP med oändlig horisont eller då ingen utbytespolicy används.    Barlow \& Proschan visade detta redan 1962.    I denna uppsats påvisas att ARP-teorier kan minska omkostnader och stilleståndstid    samt öka tillgängligheten.

Abstract [en]

The purpose of this thesis is to examine when a part's optimal   replacement time occurs in terms of risk and cost, and provide maintenance plans   accordingly using statistical methods.   With the use of statistical tools and historical data,   the failures of components as well as the system can be predicted.   Once the researcher knows how the system behaves, he/she can reveal the gains that   can be made. Scheduling of preventive maintenance, improved warranty cost   forecasts and estimation of lengthened warranty costs are   plausible benefits from this report. This will further result   in higher availability and improved reputation among clients.   Reliability theory is an important part of Total Quality Management (TQM),   ensuring good quality.   This thesis will compare the differences between two known age replacement policies (ARP),   and with the strategy of replacing only on failures in a real case-study.   This thesis indicates that an ARP with finite horizon yields   a more optimal solution than an ARP with infinite horizon as well as using no replacement policy at all.   Barlow & Proschan established this as far back as 1962.   With the aid of ARP theories it has been shown in this thesis that lowering costs is possible   and in the progress lower downtime which increases availability.

Place, publisher, year, edition, pages
2009. , p. 3
Series
Reports from MSI, ISSN 1650-2647 ; 09085
Keywords [en]
Reliability, Preventive maintenance, Quality, Suspended items, TQM, Warranty, Optimization, Hazard rate, Age maintenance policy, Availability
National Category
Computational Mathematics
Identifiers
URN: urn:nbn:se:vxu:diva-6430ISRN: VXU/MSI/MA/E/--09085/--SEOAI: oai:DiVA.org:vxu-6430DiVA, id: diva2:281583
Presentation
(English)
Uppsok

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Available from: 2009-12-16 Created: 2009-12-16 Last updated: 2010-03-10Bibliographically approved

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