931 research outputs found

    Shared Spare Parts Management in Offshore Remote Locations: A Model to Improve Logistics and Reduce Carbon Emissions.

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    The management of spare parts poses significant challenges, particularly in offshore remote locations. The combination of the remoteness of these locations and harsh environmental conditions adds complexity to the process of timely delivery of spare parts. As a result, lead times are prolonged and operational downtime is increased, leading to substantial financial losses for companies. The lack of simulation models limits the practical application of sharing spare parts strategy, hindering understanding of their potential benefits, costs, and challenges. This gap hinders the implementation of the concept of sharing spare parts management and prevents their adoption in real-world scenarios To address this gap, a simulation model was developed to manage spare parts across three offshore locations in the Barents Sea. The focus lies in exploring the benefits of sharing spare parts strategy among platforms, particularly regarding lead times, CO2 emissions, carbon tax costs, and reuse of spare parts among these platforms. The study follows a quantitative approach using AnyLogic software for simulation. Various factors, including storage capacities, vessel speed, carbon emissions, and carbon tax costs, were incorporated into the model. The research design consists of four stages: conceptualization, model structuring, parameterization, and validation. A case study approach is used, with data from three common equipment types across three criticality classes. Through a comparison between the baseline scenario and the solution scenario, the results demonstrate the effectiveness of the proposed concept of sharing spare parts. It reduced trips to the onshore warehouse by 42%, decreased total traveling time, CO2 emissions, and carbon tax costs by 48.6% each, and optimized lead times and inventory management. These results underscore the potential benefits of sharing spare parts systems, providing a pathway for more efficient and sustainable spare parts management in offshore operations

    Stochastic Models of Critical Operations

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    All-electric LNG a viable alternative to conventional gas turbine driven LNG plant

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    The world demand for natural gas which is at an increasing trend has rekindled interest in the production and transportation of Liquefied Natural Gas (LNG) from resource rich areas in Africa, Middle East, Far East, Australia and Russia to customers in Europe, Americas, China and India. The challenges for the future are to produce and transport gas in a cost effective manner to be competitive in the market place. Gas is beginning to play an increasingly important role in energy scenario of the world economy. The easiest ways of getting gas to the market is by pipe lines. However to reach markets far and wide across oceans, gas needs to be converted and transported in liquid form. Competitive pressure and search for economies of scale is driving up the size of LNG facilities and hence the capital requirement of each link of the value chain. Interdependent financing of the various links of the value chain, while maintaining their economic viability, is the challenge that sponsors need to address. The industry is potentially a high risk business due to uncertainty associated with the characteristics of the industry, which calls for high level of investment in an environment of volatility of the price and political and economic changes in the world market. LNG production facilities are becoming larger and larger than ever before to take advantage of economies of scale. These massive plants not only have created new challenges in design, procurement and construction and environment but will create new challenges in operation and maintenance. Innovative technologies and first of a kind equipment applications with a rigorous technology development and a stringent testing plans ensure that the facility will achieve a long term reliable operation. Conventional LNG plants use Gas Turbine as main drivers for refrigerant compressors. To this effect All-Electric LNG has a potential to provide an alternative offer a life cycle advantage over the convention. Hence it would be worthwhile to study the pros and cons and prospects offered by this new technology from an overall life cycle perspective for future of LNG projects. This research is an endeavours in this direction

    A Plant Life Management Model Including Optimized MS&I Program - Safety and Economic Issues

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    This report collects the experience of the European Countries in the field of Plant Life Management (PLIM) and maintenance optimisation, as a background for the development of a new PLIM models, suitable for the European framework. The research highlights the the basic goal of PLiM in terms of support to a safe long-term supply of electricity in an economically competitive way. A PLIM model is proposed, validated with the experience of the SENUF research network members and with the essential contribution of managers and staff of a selected nuclear plant. The model addresses both technical and economic issues, as well as organizational and knowledge management issues and is now open for a broader validation by the research and engineering communities, to be carried out in the coming research steps.JRC.F.5-Nuclear operation safet

    Sustainable Supply Chain Solutions – A Case Study Regarding Modifications of an Existing Spare Part Distribution System

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    The main purpose of the thesis is to provide Syncron with guidelines regarding how to modify their software for logistic planning in order to meet future customer needs. Furthermore, the thesis serves as input to the research project supported by NGIL, named Design and Control of Sustainable Supply Chains. Problem Formulation: Transport costs have not been a significant cost driver in the past, which is why little effort has been spent on optimizing this area. With the predictions regarding new conditions within the transport industry, this will most likely change. To stay competitive, companies might have to focus a lot more on creating sustainable and cost efficient supply chains; sustainable in the sense that logistics are performed in an environmental and competitive way and are well adjusted to the optimal design of the inventory structure. With this in mind, the problem formulation has converged into: What upcoming legislations and other transport related obstacles will have impact on the design of the supply chain? How can Lantmännen Maskin’s supply chain be adapted to the changes in transport related regulations in the sense that it is optimized with respect to environmental as well as economical aspects? With respect to Lantmännen Maskin, what additional costs are associated to new legislations and how much can these costs be reduced, by modifying the supply chain? Methodology: Both quantitative and qualitative data were used in the thesis. Data was collected from primary sources such as, email correspondence with authorities, interviews and a questionnaire, while secondary data was mainly gathered from government publications and other literature. Initially, a comprehensive theoretical framework, Part 1, was built using an analytical approach. Subsequently, a case study, presented in Part 2, was performed with a systems approach in order to obtain material on which to conduct an analysis. The analysis ends in conclusions and recommendations to concerned parties. Theoretical Framework: Part 1 consists of an extensive theoretical base where present and future environmental regulations, such as taxes and fees, have been investigated and discussed. The theoretical framework is completed by a short theory section in the beginning of Part 2. This sectio

    Application of Optimization in Production, Logistics, Inventory, Supply Chain Management and Block Chain

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    The evolution of industrial development since the 18th century is now experiencing the fourth industrial revolution. The effect of the development has propagated into almost every sector of the industry. From inventory to the circular economy, the effectiveness of technology has been fruitful for industry. The recent trends in research, with new ideas and methodologies, are included in this book. Several new ideas and business strategies are developed in the area of the supply chain management, logistics, optimization, and forecasting for the improvement of the economy of the society and the environment. The proposed technologies and ideas are either novel or help modify several other new ideas. Different real life problems with different dimensions are discussed in the book so that readers may connect with the recent issues in society and industry. The collection of the articles provides a glimpse into the new research trends in technology, business, and the environment
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