Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1980. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING. / Bibliography: leaves 151-153. / by Paul J. Haven. / M.S.

A project report submitted to the faculty of Engineering, University of the Witwatersrand, Johannesburg, in partial fulfillment of the requirements for the degree of master of Science in Engineering. Heidelberg Transvaal, 1993. / The obiective of this research is to propose a model by which maintene may be managed in the prepared foods industry. Various companies in this industry have implemented modules of a maintenance administration system. Nowhere, for this industry, does a structured programme which will provide tha maintenance manager with the elements of an administration system, their sequence of implementation and their interrelationships exist. [Abbreviated Abstract. Open document to view full version] / AC2017

No description available.

Planerat fastighetsunderhåll bör ske på ett strategiskt och genomtänkt sätt. Om detta inte görs medför det allt som oftast att underhållsarbetet sker ostrukturerat med missnöjda hyresgäster som resultat. Detta arbete fördjupar sig i det planerade underhållet för fastigheter och närmare bestämt det inre underhållet, underhållet av lägenheter, som i allra högsta grad påverkar hyresgästerna.  Syftet med denna uppsats är att bidra med ökad kunskap om hur bostadsbolag arbetar med strategiska underhållsfrågor som direkt påverkar kundernas boende. De frågor som studeras är hur kommunala aktörer arbetar med inre underhåll och tillval samt hur det påverkar lönsamheten och kundnöjdheten i företagen? Arbetet har begränsats till att endast ta med kommunala bostadsbolag med ett minimum på 700 lägenheter i beståndet i examensarbetet. Den enda geografiska avgränsning som gjorts är att studien görs inom Sveriges gränser, bostadsbolagen som undersöks ligger alltså utspridda över hela landet. De olika strategierna för lägenhetsunderhåll har effekter som påverkar olika delar av ett bostadsbolag. Beroende på om det är fastighetsägare eller hyresgäst som bestämmer när ett underhåll ska ske kan man som bolag mer eller mindre styra planeringen och därmed kostnaderna för underhållet. Stordriftsfördelar kan gå förlorade och göra underhållsarbetet dyrare än det skulle behöva vara eller så kan val av modell ha direkta skattemässiga effekter för ett företag. ”Tjänsteforskningsfältet service management sammanfattar en ledarskapsstrategi som sätter kundrelationer i fokus via en kundorienterad servicestruktur och ett anpassat serviceerbjudande”. Att sträva efter att utveckla och erbjuda tjänster med toppkvalitet är något som alla organisationer kan och borde göra. Oavsett bransch så finner man i litteraturen skäl och motiv för att service management och tjänsternas kvalitet är något som man bör arbeta med. För offentliga bostadsbolag presenterar Blomé följande tre argument som pekar på att bostadsföretag kan vinna på att använda principer från service management: Kunder är särskilt beroende av bostadsbolagets tjänster eftersom man är beroende av olika sociala band till omgivningen. Det betyder att kunder inte lika lätt som andra tjänstemarknader kan byta leverantör från en dag till en annan. Bostadsbolaget är särskilt beroende av en god relation till hyresgästen eftersom det är svårt att avbryta ofördelaktiga relationer.  En bofast kund är oftast en lönsam affär för bostadsbolaget med mindre kostnader för bland annat uthyrning. För att svara på de frågor som studien ställer insamlas uppgifter om vad bostadsbolagen upplever kring de olika modellerna och tjänsterna. Studien kommer därför att dels bestå av en enkätundersökning dels semi-strukturerade intervjuer. Detta innebär att valet av metod både är kvalitativt och kvantitativt vilket litteraturen benämner som ”mixed-methods”. De huvudsakliga resultaten som tas upp i slutsatsen är följande: - Oavsett hur man väljer att definiera de olika modellerna så kan det konstateras att definitionen av dem ser väldigt olika ut inom branschen. Vad bolagen har uppgett att de arbetar med för modell kontra vad de faktiskt arbetar med skiljer sig i många fall.Teorin beskriver en allmän problematik kring begreppen och definitioner av begreppen när det kommer till underhåll, samma problematik verkar även finnas kring underhållsmodellerna. - Periodiskt lägenhetsunderhåll leder till att man gör betydligt fler underhållsåtgärder jämfört med de andra modellerna.Frekvens tas upp som en av de faktorer som driver kostnaderna avseende underhåll, rimligtvis borde då även de bolag som arbetar med denna modell ha en högre underhållskostnad jämfört med andra bolag - Hyresgäststyrt lägenhetsunderhåll är den modell som genererar nöjdast kunder samtidigt som den är minst lönsam.Kundnöjdhet bygger enligt teorin på en serviceorienterad organisation och denna modell, som är mer kund- och serviceorienterad, bekräftar teorin om ökad kundnöjdhet. Ur intervjun framgår även att det till stor del beror på de hyresrabatter som hyresgästerna har möjlighet att få. Att den inte är särskilt lönsam kan dels bero på hyresrabatterna dels den hyresreglering som råder. - Oberoende av hur många tillval ett bostadsbolag har i sitt sortiment så ser det ekonomiska utfallet ungefär likadant ut men för kundnöjdheten gäller att ju fler tillval, desto nöjdare kunder. Denna studie har fokuserat på de kommunala bostadsbolagen och hur de upplever de olika modellerna för inre underhåll. Muyingo (2017) studerade de skillnader som förekom mellan kommunala aktörer och privata aktörer avseende drift- och underhållskostnader, det skulle även vara intressant att studera om och i sånt fall hur det skiljer sig avseende det inre underhållet mellan dessa två olika aktörer. Hur skiljer sig de olika aktörernas sätt att arbeta med inre underhåll och varför, samt vilka konsekvenser ser man av det? / Planned property maintenance should be done in a strategic and thoughtful manner. If this is not done, it usually happens that the maintenance work is done unstructured with dissatisfied tenants as a result. The focus in this thesis is planned maintenance of housing and in particular the maintenance of apartments, which most affect the tenants. The purpose of this thesis is to contribute with increased knowledge of how housing companies work with strategic maintenance that directly affect customers' accommodation. The issues studied are how municipal actors work on internal maintenance and customer options, and how it affects profitability and customer satisfaction in companies? The work has been limited to include only municipal housing companies, with a minimum of 700 apartments in the stock, in the degree project. The only geographical demarcation that has been made is that the study is conducted within Sweden's borders, the housing companies surveyed are thus scattered throughout the country. The various housing maintenance strategies have effects that affect different parts of a housing company. Depending on whether a property owner or tenant determines when a maintenance is to be done, companies can more or less control the planning and, consequently, the cost of maintenance. Either the economies of scale may be lost and maintenance work more expensive than it would be or the models could have direct tax effects for a company. "The research field service management summarizes a leadership strategy that focuses on customer relations through a customer-oriented service structure and a customized service offering". Striving to develop and offer top quality services is something that all organizations can and should do. Regardless of the industry, the literature finds reasons and motives that service management and quality of service are something that should be worked with. For public housing companies, Blomé presents the following three arguments which point out that housing companies can benefit from using principles of service management: Customers are particularly dependent on housing company services because they depend on different social ties to the environment. This means that customers can not change supplier from one day to another as easily as other service markets. The housing company is particularly dependent on a good relationship with the tenant because it is difficult to cancel unfavorable relationships. A long-standing customer is usually a profitable business for the housing company, with less costs for renting. In order to answer the questions asked in the thesis, information about what the housing companies perceive about the different models and services is collected. The study will therefore consist of a questionnaire and semi-structured interviews. This means that the choice of method is both qualitative and quantitative, which literature refers to as "mixed-methods". The main results listed in the conclusion are as follows: - No matter how you choose to define the different models, it can be noted that the definition of them looks very different in the industry. What the companies have said they are working on for model versus what they actually work with differs in many cases. The theory describes a general problem of the concepts and definitions of the concepts when it comes to maintenance, the same problem seems to exist around the maintenance models. - The model Periodic apartment maintenance results in significantly more maintenance than the other models. Frequency is brought up as one of the factors that affect maintenance costs, reasonably those companies working with this model should have a higher maintenance cost compared to other companies. - Tenant-based apartment maintenance is the model that generates most satisfied customers while at the same time it is the least profitable model. Customer satisfaction is based on the theory of a service-oriented organization and this model, which is more customer and service oriented, confirms the theory of increased customer satisfaction. The interview also shows that it largely depends on the rental discounts that the tenants have the opportunity to receive. The fact that it is not particularly profitable can be partly due to rental discounts and partly to the rental regulations that exist. - Regardless of the number of customer options a housing company has in its range, the financial outcome looks similar, but for customer satisfaction, the more options, the happier customers. This thesis has focused on the municipal housing companies and how they experience the different models of apartment maintenance. Muyingo (2017) studied the differences between municipal actors and private actors regarding operating and maintenance costs, it would also be interesting to study if, and in that case how it differs from the apartment maintenance between these two different actors. How do the different actors differ in the way they work with internal maintenance and why, and also what are the consequences of that?

Maintenance has evolved over centuries and has played significant role for growth of organizations. Maintenance history is differentiated by three generations, the development of maintenance considered from being “necessary evil” to “profit contributor”. Many literatures have discussed maintenance for optimization and increasing profitability but little on the factors which influence on the future of maintenance. Maintenance should be considered as a “competitive factor” in the future. Many trends have evolved in production and every trend had a major contribution towards production development. The successful implementation of the trends is considered to be a major challenge. Little literatures have talked on the emerging trends and challenges in production. The thesis reviews the historical development of maintenance over generations and presents the key factors which play a major role during the fourth generation, and also identifies the emerging trends and challenges to be faced by production. The literature review, interviews and surveys were used in this thesis. Academic researchers and industrial experts from both maintenance and production department answered the interview and survey questions for this research. The key factors for the proposal of fourth generation of maintenance and the emerging trends and challenges to be faced by production are presented. The result from the research questions and the empirical findings are summarized in a framework that will enable readers to know the historical development of maintenance, the key factors to be considered for the fourth generation of maintenance and the emerging trends and challenges to be faced by production in future. In addition, the thesis also discusses the impact of information technology on the future of maintenance and the effect of sustainability in the future of production.

Purpose: Explore how historical data from a CMMS can be used in order to improve maintenance effectiveness and efficiency of activities, and investigate the possibilities for CBM in the manufacturing industry in the context of digitalization.  Research questions: RQ1: To what extent could condition-based maintenance or other maintenance types being used in order to predict, prevent or in other way eliminate historical breakdowns/faults?  RQ2: Which significance has an organization's degree of maturity to reduce the number of breakdowns?  Method: A case study was performed at Volvo Construction Equipment Operations in Eskilstuna, who manufactures machinery for the construction industry. The case study was compiled in two phases. Phase one was a quantitative study where raw data were collected from a CMMS and tabulated in order to later perform in-depth analysis. Phase two was designed to collect information that generated a wider understanding of the research area, by performing interviews and observations. A literature study was performed to compare the empirical findings with peer-reviewed information to ensure the quality of the study. The data is compiled and analyzed with an abductive approach. The analysis was followed by a discussion of how the research findings could support identifying possibilities of different maintenance types in the future.  Conclusion: The result showed that using historical breakdown data from a CMMS can be useful in order to identify organization’s current state and what possibilities different maintenance types have to decrease the number of breakdowns. To what extent the breakdowns can be decreased relies not only on the maintenance type but also an organizations maturity level. The case study´s result showed that by combining different maintenance types and increasing degree of maturity, Volvo could decrease the historical breakdowns with 86,5%. By only using CBM with current maturity level, 56% of the historical breakdowns could be predicted. However, to decide how many breakdowns that is cost-effective to prevent and precisely what maintenance type that should be used requires a cost analysis which this study is not covering.

Submitted by Silvana Teresinha Dornelles Studzinski (sstudzinski) on 2016-02-17T12:23:02Z No. of bitstreams: 1 Gustavo Gastmann Brand_.pdf: 698042 bytes, checksum: 303b375ce86e6c8e28f55a2462a7cefd (MD5) / Made available in DSpace on 2016-02-17T12:23:02Z (GMT). No. of bitstreams: 1 Gustavo Gastmann Brand_.pdf: 698042 bytes, checksum: 303b375ce86e6c8e28f55a2462a7cefd (MD5) Previous issue date: 2011-06-27 / Nenhuma / O objetivo principal desta dissertação é apresentar um método para aplicação da Manutenção Centrada em Confiabilidade (MCC) em uma linha de cromagem de cilindros de alumínio. Para a análise, foram utilizados os tempos até a falha e os tempos para o reparo. O trabalho foi desenvolvido a partir de um estudo de caso e aplicado em uma empresa multinacional fabricante de motores à combustão interna, cuja produção de cilindros de alumínio atinge volume anual de 4,5 milhões de peças. Em relação aos objetivos específicos desse trabalho, citam-se a revisão dos conceitos, histórico e aplicações da manutenção, conceito de confiabilidade, modelos de distribuição probabilística, estimativa de parâmetros, teste de aderência e fundamentos de falhas. As principais etapas para aplicação do método são: definição e seleção do sistema objeto do estudo; análise funcional de falhas; seleção dos itens críticos; coleta e análise dos dados de falha; seleção de ações de manutenção; e determinação dos intervalos de manutenção. Como o Mean Time To Repair (MTTR) foi muito baixo em relação ao Mean Time Between Failure (MTBF), toda a atenção foi concentrada para aumentar o MTBF e não reduzir o MTTR. Como resultado, verificou-se que quase todos os equipamentos estudados estão na fase de maturidade. Observou-se também que a Manutenção Preventiva é predominante, em muitos casos associada à Preditiva. As considerações finais alinham as estratégias de manutenção com as estratégias de produção referentes ao sistema estudado. / The main objective of this study is to show a method for implementation of Reliability Centered Maintenance (RCM) in a plating line of aluminum cylinders. For the analysis, It was used the time to failure and time to repair in the modeling. The work was developed from a case study and applied in a multinational manufacturer of internal combustion engines, whose production of aluminum cylinders achieves annual volume of 4.5 million pieces. Regarding the secondary objectives of this work, It´s mentioned the review of the literature on the concepts, history and maintenance applications, the concept of reliability, probability distribution models, parameter estimation, testing, adherence and reasons for failure. The main steps for implementing the method are: definition and system selection object of the study, functional analysis of failures; selection of critical items, collection and analysis of failure data, selection of maintenance actions, and determining maintenance intervals. As the Mean Time To Repair (MTTR) was very low compared to the Mean Time Between Failure (MTBF), the whole focus was to increase MTBF and not reduce MTTR. The result was the strategy of Preventive Maintenance, as predominant in many cases, associated with Predictive. The final consideration line maintenance strategies with production strategies for the system studied.

M. Tech. Civil Engineering.. / Investigates the feasibility of recycling construction waste for re-use as raw material in rehabilitation of roads in Bethal (Govan Mbeki Municipality). Specific Objectives: (a) To identify the causes of roads failure within the study area.(b) To assess feasibility of reuse of construction waste and propose method of road rehabilitation.(c) To recycle unsuitable material through characterisation of the construction waste. (d) To compare the cost implications when recycled construction waste is used with that of normal roads' rehabilitation.

Programinės įrangos (PĮ) ir Informacinių sistemų (IS) priežiūros etapas yra paskutinioji sistemos gyvavimo ciklo dalis. Priežiūros sąvoka apima visas veiklas, vykdomas po produkto įdiegimo organizacijoje, o tai sudaro apie 70 % programų gyvavimo ciklo išlaidų. Nuolat kintanti aplinka įtakoja ir sistemos kaitą. Todėl būtina nuolatinė PĮ ir IS priežiūra. Kuriami įvairūs PĮ ir IS priežiūros metodai ir technikos, kurie yra plačiai analizuojami užsienio mokslinėje literatūroje ir taikomi praktiškai. Tačiau Lietuvoje dar tik pradėjo vystytis priežiūros teikimo paslaugos ir keistis požiūris į šį procesą. Nors užsienio mokslinėje literatūroje atkreipiamas dėmesys ir į Geografinių informacinių sistemų (GIS) priežiūros procesus, tačiau tai vis dar mažai išanalizuota sritis. Todėl, šiame darbe pasirinkta kryptinė tyrimo šaka GIS priežiūra ir duomenų valdymas. Darbo tikslas išanalizuoti visus siūlomus priežiūros proceso metodus ir technikas, skirtumus ir panašumus. Siekiama nustatyti, ar teoriniai metodai plačiai taikomi praktikoje. Empiriniam tyrimui atlikti naudotas anketinės apklausos metodas. Siekiama nustatyti vartotojų požiūrį į PĮ ir IS priežiūros kokybę. Apklausos rezultatai išsamiai analizuojami, pateikiamos išvados bei pasiūlymai tolimesnės PĮ ir IS priežiūros strategijai. / Software and information system (IS) maintenance is a rest phase of system life cycle. Maintenance involves about 70 % of all life cycle resources. Software and IS are changing with business environment together. Therefore, there are a lot of methods and techniques for maintenance process analyzing in research theory and applying in practice. However, those practices are starting in Lithuania software maintenance and attending only few groups of IT specialist There are many GIS maintenance researches in publications, but also it is wide range of aspect not including in theory. Therefore, many GIS maintenance processes are analyzing in this paper. The goal of this paper is to analyze all known software maintenance methods and techniques and to define are their used in practice. Research object of this paper is municipality of Klaipeda. This is an organization, with uses usual software and specialized GIS. There were used inquiry questionnaires in this goal research. Finally, by given implications there were proposed software and IS maintenance strategy in municipality of Klaipeda. Like an instance of this strategy, there were given an project of reengineered GIS subsystem.

This thesis reviews and analyses the potential impact of maintenance on the fulfilment of Green Production Systems. Overall aim is to highlight how maintenance may contribute to decreasing the environmental impact of production. The thesis is based on the combination of literature studies and set of qualitative interviews conducted in selected companies. Three Swedish manufacturers were interviewed about their way of working, as well as their views on sustainability within operation management including maintenance. The results of the research explains why some organisations fail to recognize maintenance’s role to achieve sustainability, and how maintenance has been characterized in these organisations, namely by: short term pressures, reactive approach, neglecting hidden costs, lack of teamworking between production and maintenance departments, and low focus (hierarchical low status) on maintenance importance, resulting in lack of skilled labor available in organizations. In contrast, practices and strategies to succeed found to be based on the following: long term thinking, structured way of working, a proactive approach to maintenance, aiming to integrate core values into operational work, and establishing an environment which fosters continuous improvement and employee development. Same study identifies areas and "effects of poor maintenance" to be dealt with in the journey toward sustainable production, these are: economic, quality, processes wastes, emissions, resource consumption, safety and work environment related. It is therefore suggested that organizations may choose a proactive approach to maintenance that is best suited to their needs, which allows efficient production and long-term profitability, while considering safety and environmental aspects. Various concepts are available, but the organisation has to optimise on the combination of various practices. Following to the findings, a proposal is made that proactive culture should be integrated into daily work in a practical way such as Safety-Quality-Environment becomes everyone's responsibility. Sustainable perspective and sticking to best course of proactive measures are prioritized against short term pressures. To support this proposal a toolkit is developed that can be used at team/level continuous improvement programs, based on the PDCA model. Finally, the thesis emphasizes what benefits the optimum maintenance can provide on the fulfilment of competitive and resource-efficient production systems.