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Purpose: The purpose of the study is to develop a model that will facilitate the choice of maintenance strategy within the Swedish pulp and paper industry. Without compromising system availability, the model aims to reduce inventory holding costs. Methodology: At first, a literary research was conducted to create a holistic view over the chosen topic, in time it developed into a literature framework. Secondly, a case study was conducted in order to obtain empirical data. The data were obtained through interviews and archival records. The literature framework and the empirical data were then cross-analyzed with each other. Findings: In this thesis, a model has been developed based on previously applied and accepted methods. The methods have been identified and described in order to provide a strategy in which the inventory levels- and value could be lowered. The findings indicate that the organization must seek to assign ABC-classified and VED-analyzed components different maintenance actions in order to reduce the total cost. Theoretical contribution: This thesis contributes to a methodology development regarding spare parts management. It aims to add knowledge to the existing gap regarding spare parts order point and batch size. The thesis provides a procedure in which systems including critical and expensive components are evaluated in order to assign them the appropriate maintenance. Practical relevance: The model has only been exemplified by using a system position from Stora Enso Skutskär, the numerical values are examples. The model must be tested with real values and the risk analysis must be carried out with a group of employees with great insight regarding the selected component and system position. Limitations: This thesis is delimited to spare parts management and inventory management. The study only involves one Swedish organization, whereas the organization and its spare parts management illustrates the complexity concerning spares. The model will not be verified as the focus is to highlight the research gap and to develop the model.

Kunskap kring logistik och dess ekonomiska betydelse för organisationer har växt avsevärt de senaste årtionden. Logistik ses numera som en framgångsfaktor och bidrar genom effektiva informations- och materialflöden till en organisations konkurrenskraft. Organisationer strävar efter lönsamhet genom att bemöta det marknaden efterfrågar och inte sällan är utnyttjandegraden på maskiner nära 100 procent. Detta bidrar till ökat slitage och ställer höga krav på en väl fungerande förrådsverksamhet som underlättar det löpande underhållet genom tillförseln av reservdelar och förslitningskomponenter. Studien syftar till att inom industriell förrådsverksamhet undersöka om materialöverlämning vid disk är effektivt samt redogöra för faktorer för effektiva materialflöden. För att redogöra för hur en materialdisk bidrar till ett effektivt materialflöde har processens aktiviteter kartlagts och genom arbetsmätning tidsbestämts. För att utveckla kunskap rörande faktorer som påverkar materialflöden har benchmarking, intervjuer och observationer genomförts. Empirin har analyserats med hjälp av en litteraturgranskning beståendes av tidigare forskning. Vid kartläggning av materialdisken framkom det att den är resurskrävande och bidrar inte till ett effektivt materialflöde. Studien visar på hur antalet betjäningstillfällen kan reduceras med hjälp av reservationer, kitting, reducering av icke-kritiska artiklar i förrådet, EDI och självbetjäning. För att möjliggöra självbetjäning presenterar studien stödjande faktorer i form av, materialrekvisition, god visualisering, streckkoder, handskanning och övervakning. Studien presenterar faktorer som bidrar till ett effektivt materialflöde inom industriell förrådsverksamhet i form av materialbehovsplanering baserad på kritikalitetsanalys, uppdaterade ledtider och transparent informationsflöde. Studiens implikationer till fallföretaget är materialdiskens konsumerade tid som uppgick till 82,5 timmar per månad med tillhörande kostnad på ungefär 300 000 kronor per år. Slutligen presenteras ett identifierat teoretiskt gap då tidigare utförd forskning främst riktar sig mot materialflöden inom produktion. Framtida forskning bör behandla materialbehovsplanering och materialflöden ur ett förråds perspektiv. Nyckelord: Logistik, arbetsmätning, benchmarking, effektiva materialflöden Knowledge about logistics and its economic importance for organizations has grown considerably in the recent decades. Logistics has been seen as a factor for a business success and contributes through effective information- and material flow to an organization's competitiveness. Organizations strive for profitability by responding to market demand and maximizing the machines utilization. This leads to early wear and tear of the machines, which then demands efficient storage operations that facilitate ongoing maintenance by supplying spare parts and components. The purpose of the study is to investigate the efficiency of material delivery at disk and seek to explain the factors that contribute to efficient material flows in an industrial storage operation. The process's activities are mapped through time and motion study, benchmarking, interviews and observations are conducted to develop the knowledge about the factors affecting the material flow. The empirical data is analysed with the help of a literature review. While mapping the material disk, it was found that it is a resource-intensive work and does not contribute to an efficient material flow. This study shows that how the number of services can be minimized by means of reservations, kitting, and reduction of non-critical items in the storage, EDI and self-service. To enable self-service, this study presents the supporting factors, like material requisition, good visualization, barcodes, manual scanning and monitoring. This study presents the factors that contribute to an effective material flow in an industrial storage operations, for instance. The study's contribution to the case company is the consumed time of the material disk which amounted to 82.5 hours per month with an associated cost of approximately 300,000 SEK per year. Finally, the theoretical gap related to material flow within production is presented. Future research should address material planning and material flows from a storage perspective. Keywords: Logistics, time and motion study, benchmarking, effective material flow.