La presente tesis es un trabajo de investigación para el diseño de un modelo de gestión para mejorar el proceso de corte laser en la prestación de servicios en la industria metalmecánica de la Empresa Mobilia Industrial S.A.C que se dedica a la fabricación de muebles industriales. La empresa Mobilia Industrial S.A.C cuenta con un equipo CNC de última generación para su proceso de corte de sus propias piezas industriales y lograr así un ensamblaje preciso de su productos terminados, este equipo CNC corta con tecnología laser, logrando precisión y exactitud en cada uno de sus trabajos, diferenciándose y satisfaciendo a sus clientes de manera total, alcanzando reconocimiento y posición entre las empresas dedicadas al mismo rubro. Se ha logrado posicionar de manera rápida gracias al equipo CNC, una gran ventaja competitiva. Sin embargo, la empresa es consciente de que su equipo no viene trabajando al 100% de su capacidad, por lo cuál se diviso un nicho de ingresos para la empresa ofreciendo el equipo CNC como un servicio de corte laser a otras empresas que aún vienen desarrollando sus funciones de manera empírica, creándoles muchas veces retrasos por fallas en el corte o clientes insatisfechos que generan reprocesos. Es por esto, que Mobilia implementó sus servicios con su equipo CNC, para lo cuál hemos diseñado un modelo de gestión para mejorar el proceso de corte laser en la prestación de servicios. This thesis is a research project to design a management model to improve the laser cutting process in the provision of services in the metalworking industry, of Mobilia Industrial S.A.C Company dedicated to the manufacture of industrial furniture. The company Mobilia Industrial S.A.C has a last generation CNC equipment for cutting process their own industrial and achieve precise assembly of the finished product parts, this equipment CNC laser cut so achieving precision and accuracy in each of its differentiate and making work satisfying customers totally, achieving recognition and position among the companies engaged in the same category. It has quickly established itself thanks to CNC equipment a competitive advantage. However the company is aware that his team is not working at 100% capacity, so a niche revenue for the company was spotted offering the CNC machine as a laser cutting services to other companies that are still developing their empirically functions, creating in often delays or failures in cutting dissatisfied customers that generate rework. That is why Mobilia implement its services with CNC equipment, for which we designed a management model to improve the process of laser cutting service delivery.

El presente trabajo de investigación ofrece una propuesta de un plan de gestión de mantenimiento, para optimizar el valor de los activos de maquinaria pesada que se utiliza en proyectos de infraestructura vial, dentro de los lineamientos de la Norma ISO 55001:2014; caso de estudio: empresa constructora CHC INGENIEROS SA. Se utiliza la metodología de elaboración de planes de mantenimiento de Gica Ingenieros, cumpliendo los requerimientos de la ISO 55001:2014, basados en valor, alineamiento, liderazgo y aseguramiento según la ISO 55000:2014, a fin de lograr el balance entre costo, riesgo y desempeño. La metodología se basa en la mejora continua, la gestión basada en procesos y el ciclo PHVA. La estructura del plan contiene cinco ejes: (1) revisión del contexto estratégico y liderazgo de la organización, (2) establecimiento de la gestión estratégica para la gestión del mantenimiento, (3) diagnóstico y planificación del mantenimiento, (4) planificación y control operativo del mantenimiento y (5) control, auditorías, revisión por la dirección y mejoras del mantenimiento. La metodología verifica y valida el plan por juicio experto a través del Proceso de Análisis Jerárquico, comparaciones pareadas, escala de Saaty y escala de Likert. El análisis financiero de la propuesta nos indica un VAN de $74,400.40, TIR de 64.03%, Payback de 1,3 años y un análisis de sensibilidad que nos indica los resultados del proyecto en 729 posibles escenarios si las variables del proyecto son afectadas en 10%. De la investigación, a nivel técnico y financiero la propuesta es rentable para la organización, permitiendo al portafolio de activos analizados entregar valor. / This research paper proposes a proposal for a maintenance management plan, to optimize the value of heavy machinery assets used in road infrastructure projects, within the guidelines of ISO 55001:2014; case study: construction company CHC INGENIEROS SA., with the objective of increasing the value of the assets. Gica Engineers maintenance plan development methodology is used, complying with the requirements of ISO 55001:2014, based on value, alignment, leadership and assurance according to ISO 55000:2014, in order to achieve a balance between cost, risk and performance. The methodology is based on continuous improvement, process-based management and the PHVA cycle. The plan structure contains five axes: (1) review of the strategic context and leadership of the organization, (2) establishment of strategic management for maintenance management, (3) maintenance diagnosis and planning, (4) operational planning and control of maintenance and (5) control, audits, management review and maintenance improvements. The methodology verifies and validates the plan by expert judgment through the Hierarchical Analysis Process, paired comparisons, Saaty scale and Likert scale. The financial analysis of the proposal indicates an NPV of $74,400.40, an IRR of 64.03%, a Payback of 1, 3 years and a sensitivity analysis that indicates the results of the project in 729 possible scenarios if the variables of the project are affected in 10%. From research, to technical and financial level the proposal is profitable for the organization, allowing the portfolio of assets analyzed to deliver value. / Trabajo de investigación

Denna rapport bygger på den kommande solcellsfasaden på kvarteret Frodeparken i centrala Uppsala. Projektet genomförs genom ett partneringavtal mellan Skanska Sverige AB och Uppsalahem. Syftet med detta examensarbete var att skapa en underhållsplan samt en investeringskalkyl för projektet. En teknisk bakgrund för solcellsanläggningar har sammanställts för att förstå hur systemet fungerar. Underhållsplanen grundas på fakta från solcellsleverantören och uppgifter från referensobjekt. Det har visat sig att solcellsanläggningar kräver väldigt lite underhåll. För att få en bred syn på investeringen har ett antal simuleringar på investeringskalkylen genomförts. Vilka har visat att det är svårt att få en investering på en solcellsanläggning lönsam. Då tekniken är under utveckling är det inte omöjligt att den blir det i framtiden. / This report is about the solar facade on the future building kvarteret Frodeparken in the central part of Uppsala. The project implemented through a partnering agreement between Skanska Sverige AB and Uppsalahem. The purpose with this task was to create a maintenance plan and an investment calculation of the project. A summary of the solar cell technology has been done to understand how the system is going to work. The maintenance plan is based on facts from the solar cell supplier and data from the reference objects. It has been shown that the solar cells need very little maintenance. To get a wider view of the investment have a number of simulations on investment calculations been done. Who has shown that it is difficult to get an investment of solar cells profitable. The technology is constantly evolving which may give it a chance to bright in the future.

M. Tech. (Power Engineering, Faculty of Engineering and Technology), Vaal University of Technology / In view of the energy consumption problems, an impact study, extensive laboratory tests and an investigation towards comparable energy saving light sources was carried out on the light sources identified in the survey conducted at the Vaal University of Technology (VUT), Vanderbijlpark campus. Three types of identified incandescent light sources were purchased and extensively tested in order to obtain viable statistical data on the life span, luminance delivered per unit, power consumption and economic effect, as well as identifying relevant energy efficient light sources for replacement purposes. A suitable computerised maintenance program has been developed to be introduced to the VUT that currently does not have a lighting system maintenance program. The case study was located within the empirical-analytical paradigm, using quantitative data. The identified aims and goals place the empirical part of the study in the category of implementation evaluation research that provides an overview of a maintenance plan.

The Salvation Army, a non-profit Christian Church and social service enterprise, struggles as all corporations do, with expending limited resources in the most efficient and effective manner. The Salvation Army has been recognized as a corporate leader in effectively managing administrative and programmatic resources and generating positive results in their programs designed for the benefit of society and the community of mankind as a whole. This document focuses on whether The Salvation Armys practices concerning the design, construction, and operation of facilities warrants the same praise regarding efficiencies and effectiveness. The contents of this thesis are an evaluation of, and recommendations for, the design and construction processes used by The Salvation Armys Corporate Headquarters to construct and operate Salvation Army Corps Community Centers throughout the southeastern United States. The primary objectives were to analyze the current design and construction processes, develop a prototype design, and determine through quantitative research if standardization of the design is cost effective, programmatically functional, superior in terms of constructability, maintainability, sustainability, and if and how a standard model should be implemented. The methodology used to produce this thesis included a comprehensive review of relevant literature concerning current industry standards regarding design and construction to develop an understanding of the advantages and disadvantages of standardized design. Personal interviews with architects and directors of similar facilities were conducted to gain a thorough knowledge of the concept of standardization. A survey was distributed to internal personnel involved in the design, construction, and operations of Salvation Army Corps Community Centers. The survey was used to determine the experience, expertise, and limitations of those individuals and how the internal population views and implements current processes, as well as their opinion of standardization. In concert with a standard design, an integrated operations, maintenance, capital renewal plan, and emergency plan concept is discussed, produced, and incorporated into an actual constructed model. An implementation plan for each of the components mentioned above is also provided. The information gleaned from the research indicated that process improvement was warranted and that a standardized design could effectively jump start the design process which would ultimately result in cost savings, production of a programmatically functional facility that is cost effectively maintained, built from sustainable products, and incorporates an operations, maintenance and capital renewal plan as well. While the research conducted supports the implementation of a standardized design, operations, and capital renewal plan, further research will be conducted to evaluate the effectiveness of the implemented program. By studying the constructed model, adjustments can be made in the process and practice to further improve the efficiency and effectiveness of the standardized design process, operations, maintenance, and capital renewal plan.

Diante da crescente importância da gestão da manutenção para o aumento da competitividade das empresas e a deficiência existente na literatura quanto à abordagens quantitativas da MCC, o tema desta dissertação é a Manutenção Centrada em Confiabilidade (MCC), abordada a partir de análises quantitativas. Seu principal objetivo é explorar as análises quantitativas que possam ser usadas no âmbito da MCC para contribuir na elaboração de planos de manutenção. Inicialmente, foram identificados, através de pesquisa da literatura e entrevistas em empresas manufatureiras, métodos quantitativos que poderiam dar suporte a MCC. Entre os métodos quantitativos identificados, destaque para o uso de distribuições de probabilidade, que suporta várias atividades da MCC. Os métodos de Engenharia Econômica e a simulação de Monte Carlo também merecem destaque, pois permitem análises mais sofisticadas associadas a custo e desempenho de sistemas produtivos sujeitos à manutenção. Posteriormente, foram elaborados dois métodos para desenvolver análises quantitativas que orientem a revisão ou elaboração de um plano de manutenção de equipamentos: um para um cenário de produção just in time e outro para um cenário de produção protegido por estoques. Ambos os métodos envolveram o uso de distribuições de probabilidade, simulação de Monte Carlo e análise de sensibilidade. A aplicação dos métodos é ilustradas através de estudos reais realizados em linhas de uma empresa do setor de tintas e corantes. / Due to the growing importance of maintenance management to increase the competitiveness of companies and the deficiency in the literature concerning quantitative approaches to RCM, the subject of this dissertation is the Reliability Centered Maintenance (RCM), approached from quantitative analysis. Its main objective is to explore quantitative analysis to be used in the scope of RCM and contribute for the construction of maintenance plans. Initially, quantitative methods that could support RCM were identified through literature research and interviews in manufacturing companies. Among the quantitative methods identified, probability distributions stood out for supporting various RCM activities. The methods of Economic Engineering and Monte Carlo simulation were also emphasized since they allow more sophisticated analysis related to cost and performance of production systems subjected to maintenance. Later, two methods to develop quantitative analysis for guiding the review or preparation of a maintenance plan for equipment were developed: one suited for a just-in-time production scenario and other for a scenario of production protected by stocks. Both methods involved the use of probability distributions, Monte Carlo simulation and sensitivity analysis. The methods were illustrated through a real applications in manufacturing lines of a paints and dyes production company.

Diante da crescente importância da gestão da manutenção para o aumento da competitividade das empresas e a deficiência existente na literatura quanto à abordagens quantitativas da MCC, o tema desta dissertação é a Manutenção Centrada em Confiabilidade (MCC), abordada a partir de análises quantitativas. Seu principal objetivo é explorar as análises quantitativas que possam ser usadas no âmbito da MCC para contribuir na elaboração de planos de manutenção. Inicialmente, foram identificados, através de pesquisa da literatura e entrevistas em empresas manufatureiras, métodos quantitativos que poderiam dar suporte a MCC. Entre os métodos quantitativos identificados, destaque para o uso de distribuições de probabilidade, que suporta várias atividades da MCC. Os métodos de Engenharia Econômica e a simulação de Monte Carlo também merecem destaque, pois permitem análises mais sofisticadas associadas a custo e desempenho de sistemas produtivos sujeitos à manutenção. Posteriormente, foram elaborados dois métodos para desenvolver análises quantitativas que orientem a revisão ou elaboração de um plano de manutenção de equipamentos: um para um cenário de produção just in time e outro para um cenário de produção protegido por estoques. Ambos os métodos envolveram o uso de distribuições de probabilidade, simulação de Monte Carlo e análise de sensibilidade. A aplicação dos métodos é ilustradas através de estudos reais realizados em linhas de uma empresa do setor de tintas e corantes. / Due to the growing importance of maintenance management to increase the competitiveness of companies and the deficiency in the literature concerning quantitative approaches to RCM, the subject of this dissertation is the Reliability Centered Maintenance (RCM), approached from quantitative analysis. Its main objective is to explore quantitative analysis to be used in the scope of RCM and contribute for the construction of maintenance plans. Initially, quantitative methods that could support RCM were identified through literature research and interviews in manufacturing companies. Among the quantitative methods identified, probability distributions stood out for supporting various RCM activities. The methods of Economic Engineering and Monte Carlo simulation were also emphasized since they allow more sophisticated analysis related to cost and performance of production systems subjected to maintenance. Later, two methods to develop quantitative analysis for guiding the review or preparation of a maintenance plan for equipment were developed: one suited for a just-in-time production scenario and other for a scenario of production protected by stocks. Both methods involved the use of probability distributions, Monte Carlo simulation and sensitivity analysis. The methods were illustrated through a real applications in manufacturing lines of a paints and dyes production company.

Diante da crescente importância da gestão da manutenção para o aumento da competitividade das empresas e a deficiência existente na literatura quanto à abordagens quantitativas da MCC, o tema desta dissertação é a Manutenção Centrada em Confiabilidade (MCC), abordada a partir de análises quantitativas. Seu principal objetivo é explorar as análises quantitativas que possam ser usadas no âmbito da MCC para contribuir na elaboração de planos de manutenção. Inicialmente, foram identificados, através de pesquisa da literatura e entrevistas em empresas manufatureiras, métodos quantitativos que poderiam dar suporte a MCC. Entre os métodos quantitativos identificados, destaque para o uso de distribuições de probabilidade, que suporta várias atividades da MCC. Os métodos de Engenharia Econômica e a simulação de Monte Carlo também merecem destaque, pois permitem análises mais sofisticadas associadas a custo e desempenho de sistemas produtivos sujeitos à manutenção. Posteriormente, foram elaborados dois métodos para desenvolver análises quantitativas que orientem a revisão ou elaboração de um plano de manutenção de equipamentos: um para um cenário de produção just in time e outro para um cenário de produção protegido por estoques. Ambos os métodos envolveram o uso de distribuições de probabilidade, simulação de Monte Carlo e análise de sensibilidade. A aplicação dos métodos é ilustradas através de estudos reais realizados em linhas de uma empresa do setor de tintas e corantes. / Due to the growing importance of maintenance management to increase the competitiveness of companies and the deficiency in the literature concerning quantitative approaches to RCM, the subject of this dissertation is the Reliability Centered Maintenance (RCM), approached from quantitative analysis. Its main objective is to explore quantitative analysis to be used in the scope of RCM and contribute for the construction of maintenance plans. Initially, quantitative methods that could support RCM were identified through literature research and interviews in manufacturing companies. Among the quantitative methods identified, probability distributions stood out for supporting various RCM activities. The methods of Economic Engineering and Monte Carlo simulation were also emphasized since they allow more sophisticated analysis related to cost and performance of production systems subjected to maintenance. Later, two methods to develop quantitative analysis for guiding the review or preparation of a maintenance plan for equipment were developed: one suited for a just-in-time production scenario and other for a scenario of production protected by stocks. Both methods involved the use of probability distributions, Monte Carlo simulation and sensitivity analysis. The methods were illustrated through a real applications in manufacturing lines of a paints and dyes production company.

Järnvägen har möjliggjort boende och arbete på olika orter, genom tågpendling, samt intresset för godstransporter på järnvägen ökar. För att upprätthålla en god status på järnvägen behövs mycket pengar, samtidigt som dess tillgänglighet påverkar många människor. Detta gör det än mer angeläget med en robust järnvägsanläggning, med hög tillgänglighet samt en god punktlighet för både person- och godståg. Ett bättre planerat underhåll möjliggör en längre användbar livstid för samtliga komponenter i järnvägsanläggningen. Som anläggningsdel förorsakar spårväxlar den högsta kostnaden i en banöverbyggnad, med korsningar som ett av de mest frekventa komponentbytena. Idag är den användbara livstiden på fasta mangankorsningar för låg, ca 100 MBrt, då den förväntas vara mellan 100–500 MBrt. Detta ligger till grund för arbetet där syftet är att undersöka hur det förbyggande underhållet av fasta korsningar i spårväxlar bättre kan planeras, utföras och följas upp för att förlänga dess användbara livstid. Vidare är målet med examensarbetet att genom en nulägesanalys, som innefattar dagens erfarenheter, förslag till förbättrade arbetsmetoder och morgondagens informationsinhämtning, fastställa vilken information som kommer att krävas för att på ett bättre sätt planera underhållet, samt att fastställa vilka underhållsåtgärder som är nödvändiga för det förebyggande underhållet av fasta korsningar i spårväxlar. Baserat på detta utformas en underhållsplan med tillhörande LCC för fasta korsningar i spårväxlar. Vidare ska samtliga underhållsåtgärder i underhållsplanen vara planeringsbara minst 3 månader i förväg, och det är önskvärt att underhållsplanen ska sträcka sig 36 månader framåt. Initialt utförs en nulägesanalys och arbetet fortsätter med förslag på förbättrade arbetsmetoder. Båda i avseende hur och när underhåll utförs på fasta mangankorsningar idag ute i anläggningen. Avslutningsvis presenteras en underhållsplan med intervall samt de resurser som krävs för de underhållsåtgärder som ska utföras. Dessa åtgärder är byte av korsning, inslipning, slipning, påsvets, spårriktning/stoppning, shimsning av moträl, byte av korkgummi samt ballastrening. Tillhörande till underhållsplanen utformas en kalkyl för livscykelkostnad, LCC, där arbete efter nuläge samt arbete efter underhållsplan jämförs. Resultatet från arbetet visar att samtliga entreprenörer anser att brist på tid i spår är en starkt bidragande faktor till att fasta korsningar byts. Detta tillsammans med att rätt förebyggande underhållsåtgärder som inslipning och förebyggande slipning för att upprätthålla profil, samt kontroll av spårläge och åtgärd vid behov inte görs. Vidare utför entreprenören ingen uppföljning av utförda underhållsåtgärder, utan beslut om underhållsåtgärder baseras till stor del på säkerhets- och underhållsbesiktningar. Detta medför att de arbetar mest avhjälpande, med åtgärd av besiktningsanmärkning. Dock för växelrevision och systematiskt växelunderhåll är erfarenhet, god lokalkännedom och god kännedom om anläggningen den avsevärt största informationskällan för entreprenören idag. Infrastrukturägaren utför även en viss leveransuppföljning, dock inte i tillräcklig utsträckning för att säkerställa att de får det som beställts. Registrering av samtliga förebyggande underhållsåtgärder bör förbättra och förenkla infrastrukturägarens uppföljning. Vidare för att möjliggöra en mer strategisk underhållsplanering behövs metoder för tillståndsbaserat underhåll tas fram, i syfte att få en bättre uppfattning om degradering av profilen för en fast mangankorsning. Till detta krävs automatiska maskinella mätningar, vilket gör mätningar reproducerbara och mätdata går att trenda. Slutligen den bristfälliga återrapporteringen av förebyggande underhållsåtgärder i kombination med entreprenörens hemlighållande av exakt underhållskostnad, resulterar i att underhållskostnaden för korsningar inte kan redovisas på en aggregerad och individuell nivå. / The railroad has made it possible for housing and work at various locations, by rail lanes, and the interest in rail freight transport is increasing. To maintain good status on the railroad, a lot of money is needed, while its availability affects many people. This makes it even more important with a robust railway facility, with high availability and good punctuality for both passenger and freight trains. Better planned maintenance enables longer useful life for all components of the railway facility. As part of the plant do railway S&C cause the highest cost in a track superstructure, with crossings as the most frequent component changes. Today, the useful life of fixed manganese crossings is too low, about 100 MBrt, since the expectancy is between 100 -500 MBrt. This is the basis for the work, where the purpose is to investigate how the preventive maintenance of fixed crossings in S&C can be better planned, performed and followed up to extend its useful life. Furthermore, the aim of the thesis work is to determine, through a current situation analysis, which includes current experiences, proposals for improved working methods and tomorrow's information gathering, which information will be required to better plan maintenance, and to determine which maintenance measures are necessary for the preventive maintenance of fixed crossings in S&C. Based on this, a maintenance plan with associated LCC is designed for fixed crossings in S&C. Furthermore, all maintenance measures in the maintenance plan must be planned at least 3 months in advance, and it is desirable that the maintenance plan should extend 36 months ahead. Initially, a zero-position analysis is performed, and work continues with suggestions for improved working methods. Both in terms of how and when maintenance is carried out on fixed crossings today outside in the railway facility. Finally, a maintenance plan is presented with intervals and the resources required for the maintenance actions to be performed. These actions include change of crossing, grinding in, grinding, welding, track direction/padding, shimming guardrail, changing of corkrubber and ballast cleaning. Compliance with the maintenance plan is a life cycle cost calculation, LCC, comparing work according to zero-position and work according to maintenance plan. The results from the work show that all entrepreneurs believe that lack of time in the track is a strong contributing factor to changing fixed crossings. This, along with proper preventive maintenance measures such as grinding in and preventive grinding to maintain profile, as well as verify track position and action when needed are not done. In addition, the contractor does not perform any follow-up on performed maintenance work, maintenance decisions are based largely on safety and maintenance inspections. This means that they work most correctively, with the action of inspection note. However, for exchange audit and systematic gear maintenance, experience, good local knowledge and good knowledge of the plant is the most important source of information for the entrepreneur today. The infrastructure owner also performs a certain delivery follow-up, but not sufficiently to ensure that they get what is ordered. Registration of all preventive maintenance measures should improve and simplify the infrastructure owner's follow-up. In addition, to enable more strategic maintenance planning, condition-based maintenance methods are required, with a view to gaining a better perception of degradation of the profile of a fixed manganese crossing. In addition, automatic machine measurements are required, which makes measurements reproducible and measurement data can be trend. Finally, the inadequate reporting of preventive maintenance measures in combination with the contractor's secrecy of exact maintenance costs, results in the maintenance cost for crossings not being reported at an aggregated and individual level.

Syfte: En långsam utveckling av levande väggar i Sverige beror bland annat på bristande erfarenhet och kunskap inom byggbranschen. Tidigare studier visar bland annat utmaningar gällande teknikens anpassning till ett svenskt klimat och ett krävande underhåll beroende av kompetens, planering och samverkan. Målet med studien är att analysera ett hållbart underhåll utifrån teknik och underhållsplanering av systemet levande väggar för att kunna besvara dessa problem. Metod: Studien är av kvalitativ karaktär där använda metoder är dokumentanalys, intervju och observation. Dokumentanalys ger en lägesbild av implementerade lösningar i södra Sverige och strategier för underhållsplanering. Intervju med relevanta aktörer bidrar med erfarenheter om teknik, underhåll och planering. Observation bekräftar information om teknik. Resultat: Studien visar på att ingen av de studerade konstruktionslösningarna kan anses fullständigt hållbara, men det finns systemlösningar som har mer eller mindre hållbara egenskaper. Levande väggar har starka sociala och ekologiska fördelar, där växtligheten bidrar till att öka ekosystemtjänsterna i urban miljö. En mindre resursanvändning är nödvändig för en hållbar teknik, där naturlig bevattning, lokala tåliga växter, varaktig konstruktion samt återvunna materialkomponenter främjar hållbar miljö och ekonomi. Filtdukssystem är enklare i design medan modulsystem är mer flexibelt. Ett gemensamt mål bland studerade projekt är att skapa ett så underhållsfritt system som möjligt där väggen får leva på naturlig väg. Acceptans för vilande växter under vinterhalvåret kan sänka krav på underhållet. Teknisk övervakning underlättar men manuell tillsyn är vital för väggens överlevnad. Frekvensen på underhållet varierar från projekt till projekt där kundens önskemål, placering, typ av vägg, storlek, växtval och årstid påverkar. Därför är det viktigt med planering och kontinuerlig utvärdering av behov. Majoriteten av studerade projekt har ingen tydlig underhållplanering, men studien visar på framgångar av ett tydligt gemensamt mål, tidig involvering av driftpersonal, platsanalys, målinriktad underhållsplan och erfarenhetsåterkoppling. Konsekvenser: Studiens slutsats är att tekniken för levande väggar behöver utvecklas för att för att lämna ett mindre fotavtryck på miljö och ekonomi. Utvecklingen går mot ett så underhållsfritt system som möjligt, men den manuella tillsynen kan inte ersättas helt av avancerad teknik. Varje anläggnings unika förutsättningar kräver noggrann planering och kontinuerlig utvärdering av behov. Begränsningar: Studien behandlar levande väggar i ett svenskt urbant klimat, där resultatet baseras på erfarenheter från projekt utförda i södra Sverige. Annan geografisk placering skapar andra förutsättningar för teknik och underhåll. Mer generella antaganden kan göras gällande underhållsplanering. Fler intervjuer med underhållstekniker kan bidra med andra aspekter i analysen. / Purpose: A slow development of living walls in Sweden is partly due to lack of experience and knowledge in the construction industry. Former studies point at challenges of adapting the technique in a Swedish climate and the importance of planning, knowledge and cooperation for the maintenance. The objective of the study is to analyse a sustainable maintenance by technique and maintenance planning of the system living walls in order to answer these challenges.   Method: The study is based on a qualitative approach where the methods are document analysis, interview and observation. Document analysis gives a status report of the implemented living walls in Sweden and introduces strategies for maintenance planning. Interview with relevant participants contributes with experiences concerning technique, maintenance and maintenance planning. Observation confirms the information about the technique. Findings: The study shows that none of the observed solutions can be considered completely sustainable, though they do have some sustainable qualities. Living walls have strong social and ecological benefits, where the vegetation contributes to increase ecosystem services in urban environment. A less use of resources is necessary for a sustainable technique where the use of stormwater, local resistant plants, lasting construction and recycled components promotes a sustainable environment and economy. The felt system is simpler in its design while the modular system is more flexible. A common objective among the observed projects is to create a maintenance-free solution as possible. Acceptance for resting plants during winter can lower the demands of the maintenance. Technical monitoring facilitates the maintenance but the manual handling of living walls is crucial. The frequency of the maintenance varies from each project where the client’s choice, placement of the wall, type of solution, size, plant choice and season affect. Therefore, it is important with planning and constantly evaluating a walls needs. The majority of the observed projects do not have a maintenance plan but the study shows success by a common objective, site analysis, goal-oriented maintenance plan and experience feedback. Implications: The conclusion of the study is that the technique of living walls needs to be evolved to leave a smaller footprint on the environment and the economy. The development is towards a maintenance-free solution but the manual handling can not be replaced by advanced technique. Every projects individual conditions demands thorough planning and continuous evaluation of the wall. Limitations: The study discuss living walls in the Swedish urban climate, where the result is based on experiences from projects developed in the southern part of Sweden. Other geographical placement causes different conditions for technique and maintenance. General assumptions can be made concerning the maintenance planning. More interviews with maintenance staff can contribute with other aspects to the analysis.