A reliability based maintenance policy; a case study

Reliability centered maintenance (RCM) incorporates sound guidance for managers who wish to attain high standards of maintenance at their operating plants. Since the amount and type of maintenance which is applied depend strongly on the machine or components age (DFR, CFR or IFR), on its replacement cost as well as on the cost and safety consequences of system failure, a careful analysis of the system components based on their reliability data should be done in order to optimize the maintenance program. This paper describes the methodology which was used at an aluminum plant in order to select critical machines and to develop an optimal maintenance policy based on reliability data of each machine, safety consequences of system failure, lead time and repair time, and components criticality.     

基于射频识别技术的装备维修器材管理信息系统设计

本文简要介绍了射频识别技术的基本原理，着重叙述了基于射频识别技术的便携式维修器材管理信息系统的组成、功能和特点。该系统运行可靠，操作方便，提高了装备维修器材保障的效率。     

The face of the patent is not the “Whole Story”: determining effective life of a pharmaceutical patent in the United States

This article provides an overview of the factors that may contribute to the effective term of protection for a pharmaceutical product in the USA––by patent and by FDA market exclusivities, identifies public and commercial sources for collecting relevant patent term and exclusivity data, and provides a strategy for ensuring that the effective term of protection has been calculated accurately.     

Serviceability of Materials in the Tropics

With increasing complexity in the building construction trend and the advancement of building material technology, more building materials and substitutes have evolved and been adopted for use to function together in a building that is supposed to maintain its technical performance during its intended working life. Condition surveys of 450 buildings, face-to-face interviews, and workshops were conducted with industry specialists, to examine the behavior of materials used in facades and wet areas in tropical climates and their estimated costs of maintenance. This paper presents an indicative computational method for the durability of building materials for fa?ades and wet areas in the tropics. Total operations and maintenance costs of the identified materials are also included to provide suggestive maintenance expenditure over the materials’ service life. Natural stone was preferred as a more durable fa?ade material while ceramic and homogeneous tiles proved more economical for wet areas.     

加工中心主轴准停常见故障诊断与维修

以实例的形式给出加工中心主轴准停装置几种常见的故障现象,并说明维修排障的具体方法,对加工中心的实际维护与维修具有指导意义.     

工业设备预防性维修策略及其效果评估

采用随机变量评估工业设备预防性维修的效果,以单位时间平均维修费用最低为目标,并假定评估预防性维修效果的参数服从均匀分布,构建维修策略的优化模型并进行数值仿真.仿真结果表明,采用随机参数的预防性维修模型能有效降低故障率增长趋势,减少单位时间平均维修费用,具有更好的优化结果,可以为维修计划的制定和现场的作业调度提供决策支持.     

关于控制设备维修费用增进企业经济效益的探讨

为降低设备维修费用,应采取有计划、有步骤地对旧设备进行技术改造;加强职工技术培训,加强备品储备管理,加强设备的日常检查保养、巡检以及采取设备前期诊断等措施,逐步建立以效益为中心的设备管理体制。     

Framework Model for Asset Maintenance Management

This paper presents the development of a generic framework for asset maintenance management. The framework has been presented in the form of an IDEF0 process model. The process model served to illustrate the interaction and dependencies among a diverse set of knowledge areas. In this framework, outputs from one management process become inputs to another in a subsequent hierarchy. The structure of the framework model exhibited the characteristics of flexibility and robustness. Updates in knowledge can be accommodated within the framework through incorporating new management processes and/or activities, as well as establishing new sequencing logic for these processes and/or activities. In a supporting effort to the development of the framework model, the writers have objectively reviewed the general capabilities of three commercially available software applications that are known within the asset management (AM) industry. These three applications, while encompassing a wide selection of capabilities, represent a typical selection of information technology (IT) tools and techniques that are widely used in strategic AM practices. The objective of this review is to study the operational characteristics and functionalities, and to assess the capability of software interoperability, of a representative sample of IT tools known within the AM industry.     

智能变电站二次系统“一键式”安措自动生成方法研究

为提升运维人员检修智能变电站二次作业的效率,对智能变电站二次系统"一键式"安措自动生成方法进行了研究。在智能变电站的检修安全机制基础之上,确立了划分检修安全边界的原则,并构建了检修设备陪停库。结合变电站SCD中的工程化模型,总结了二次安全措施的种类和作用,并完整给出了"一键式"安措自动生成的执行流程。最后通过试点工程验证了方法的有效性,并具有良好的应用前景。     

Integrated maintenance and mission planning using remaining useful life information

The modern world requires high reliability and availability with minimum ownership cost for complex industrial systems (high-value assets). Maintenance and mission planning are two major interrelated tasks affecting availability and ownership cost. Both tasks play critical roles in cost savings and effective utilization of the assets, and cannot be performed without taking each other into consideration. Maintenance schedule may make an asset unavailable or too risky to use for a mission. Mission type and duration affect the health of the system, which affects the maintenance schedule. This article presents a mathematical formulation for integrated maintenance and mission planning for a fleet of high-value assets, using their current and forecast health information. An illustrative example for a fleet of unmanned aerial vehicles is demonstrated and evolutionary-based solutions are presented.