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In water distribution networks, maintenance activities to insulate pipes with isolation valves are common. From that perspective, the ideal situation would be to have one valve on each pipe end in order to insulate each pipe without impacting the whole network. However, the allocation of valves has a high cost and pipes become weaker next to valves thus increasing the deterioration indexes. Therefore,...
Trying to find the most efficient and cost-effective decisions on the maintenance of different component types in power distribution systems is an increasingly challenging concern largely driven by the current financial constraints in distribution utilities worldwide. In regard to deal with this challenge, the paper presents a practical application of the Delphi method and the Modified Analytical...
In this paper, an integrated simulation—optimization approach is proposed for annual planning of power restoration workforce related to an electricity distribution company in a province of Canada. Internal and external workforces are employed to perform maintenance actions and restore power after interruptions throughout the province. According to the electricity distribution network, the province...
Organizations are spending an increasing amount of their budgets on the communication infrastructure. At the same time, the solutions are becoming less defined with more technologies available and accessible. Organizations must develop an informational model and comprehensive strategies to control the flows of resources in their hierarchical structure. The hierarchical system can be decomposed into...
Prognostics and Health Management (PHM) attracts more and more attention. The PHM behavior of equipment could be classified into two major parts: Automated part and Human-in-Loop part, the challenge is to construct the Multi-Agent model for the Automated part. Firstly, the critical activities of maintenance process are described with several self-governed agents. Then, the mechanism of communication...
Modern trends in manufacturing demand vertical integration between the enterprise and the field control level. Existing Manufacturing Execution System solutions fail to satisfy the requirements of unpredictable order flow and dynamic shop floor; neither can they deal with the increasing complexity of both. Distribution of the MES functionalities would allow shifting the decision making process from...
In the HLA framework, aimming at the ship repair enterprise, this paper establishes a evaluation simulation system based on multi-agent,then designs the simulation process of system and completes the implementation details of the agent model. A results of simulation example shows that the system can provide a rational assessment of repair capabilities, in order to provide important support for enterprise...
Dissolved Gas Analysis (DGA) is usually performed for power transformer condition based maintenance (CBM) activities. In reality, the interpretation of DGA data is complex and done through several knowledge sources. Lack of information within these knowledge sources necessitates an information fusion methodology. Constructed upon Dempster-Shafer (DS) theoretic approach, this paper proposes a novel...
Maintenance plays an important role in keeping the availability of civilian and military equipments at a satisfactory level. The issue, which decision maker is most concerned about, is how to keep the availability at a satisfactory level with less maintenance cost. In this study, we propose a simulation-optimization approach to spare parts allocation based on decision-maker's satisfaction. Firstly,...
Based on the analysis of the common method of the maintainability allocation, and for the sake of overcome the limitation of the common method--"maintainability allocation method which is pro rata for the failure rate and characteristic of design" when the design character is feckly, the method of "maintainability allocation method which is pro rata for the failure rate and characteristic...
Integrated financial and accounting system (IFAS) is developed to smooth out the monetary transactions processes and to assist the management of Universiti Utara Malaysia (UUM) in making decisions on matters specially that relates to finance. Advancement in new technology requires IFAS to undergo extensive maintenance and enhancement. Pertaining to IFAS functionalities, this paper aims at discovering...
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