通知

定期检查 periodic inspection 按规定的检查周期，由维修工对设备性能和精度进行全面检查和测量。发现的问题除当时能调整解决外，均应做好记录，作为制订检修计划的依据。     

医学影像设备应用管理及维护方法

随着我国社会进步与科学技术的发展,影像医疗设备近年来得到大力投入和使用,医院通过应用先进的影像医疗设备来进行有效的诊断、检查和治疗,才能维持长远健康的发展。影像医疗设备要维持在良好的状态下,提高其利用率并降低故障发生率,延长设备的服役周期,这对于医疗机构的社会和经济效益有着明显推动作用。探讨数字化医学影像医疗设备现代化管理思路与维护维修技术的重要性。     

寿命周期成本理论在设备购置中的应用

在设备购置中应用寿命周期成本理论的相关知识,采用相关因素分析法和周期费用评定法对设备选型进行分析比较,最终选择出适合企业生产所需的设备,使设备管理从源头上得到控制。     

立式混捏机搅刀劣化曲线测定与优化

混捏机搅刀劣化趋势的测量方法，应用此法测取其磨损速率，能准确地描绘出其劣化的曲线，使混捏机搅刀得到及时修补，实现搅刀合理、科学使用，通过制定适当计划检修作业周期，使设备得到合理维护，且大幅降低搅刀消耗费用。     

计算机辅助设备寿命周期费用分析

介绍设备寿命周期费用软件开发的一般程序，主要阐述软件的应用范围、软件的开发环境，以及软件的主要内容。针对某些关键技术，提出了解决思路，如建立费用分解的思路等，为设备寿命周期费用通用软件开发提供了框架和奠定了一定的基础。     

管壳式换热器失效分析及解决方法探究

管壳式换热器是典型的热交换基础设施，因其具有制造材料多样、结构坚固、制造简单等特征，在各行业中得到了广泛应用。但是管壳式换热器使用周期内经常会受到一些因素的影响出现失效，无法确保设备的高效和稳定运行，对其产成品的品质构成隐患。对管壳式换热器的失效进行分析并提出解决方法，旨在为增强设备应用效果提供帮助。     

论自动化焊接设备的预检修

针对自动化焊接设备预检修建立的必要性以及预检修实施的策略与方法,对生产计划性要求较高企业,可以错开检修和生产周期的时间,利用生产间歇进行预防性检查和修复,能大幅降低设备故障对生产周期的影响。     

钻机液压系统旁路过滤技术研究

油田钻修井机野外施工,运行环境恶劣,液压油容易受到污染,不仅换油周期缩短,而且还加剧了设备磨损。为此,大庆油田开展液压油旁路过滤技术研究并成功应用到设备上。从监测结果看,油品污染得到控制,设备磨损速度减缓。     

设备的全寿命周期管理和专业管理

将设备管理分为全寿命周期管理和专业管理。论述两类管理的具体内容及重要性。提出应提倡设备全寿命周期管理，加强设备专业管理，两者相结合，创造设备管理最佳效益。     

PAT型喷气织机设备维修方式的探讨

本文比较了周期计划维修和状态维修的利弊，探讨了PAT型喷气织机设备维修方式，对进口织机设备维修具有借鉴作用。     

发电设备寿命周期费用影响因素的敏感性分析

阐述了发电设备全寿命周期费用（Life Cycle Cost,LCC）的基本理论及计算方法,针对发电设备LCC的影响因素之间存在的客观联系,假定因素之间相互独立,对其中某2个因素的变动幅度进行了一定的修正,使之更贴近实际。以某2×600MW火电机组为例,选取若干影响因素,求得其全寿命周期费用净现值。对目标净现值进行单因素和多因素敏感性分析,以寻找目标值与影响因素之间所存在的内在联系,为设备投资以及后期优化管理提供决策依据。     

基于LCC的输变电设备不同生命阶段的决策研究

电力企业在资产管理中要经历多个决策过程,孤立的决策行为以及模糊的决策目标会导致决策不科学。在资产管理中引入全寿命周期成本管理（Life Cycle Cost,LCC）是未来的发展方向,建立基于LCC的决策目标是必要的和科学的。首先划分了输变电设备的生命阶段,研究了基于LCC的决策目标,然后建立了输变电设备的全寿命周期成本树,并分析了效益构成;最后分别研究了规划设计阶段、运行维护阶段以及报废阶段的成本与效益组成,建立了各阶段的决策模型。     

A simulation-based evaluation of the cost of cycle time reduction in Agere Systems wafer fabrication facility—a case study

With the vast amount of capital invested in the semiconductor industry and the high level of competitiveness, semiconductor manufacturers are continuously searching for new methods to gain more market share and increase their profits. New technologies are continuously in demand, and are pushing the semiconductor manufacturers to seek better market position through constant improvement in their processes and products.Agere Systems is one of the leading companies in the microelectronics industry. This paper presents a comprehensive framework for strategic capacity expansion of production equipment at Agere Systems wafer fabrication facility (fab). We integrate simulation modeling, design of experiments, statistical analysis, and economic justification tools to aid in this highly complex decision-making process. We compliment the framework with a particular implementation. The procedure involved studying the factors in the fab that significantly impact the cycle times of the four main technologies that are currently in process and will stay in demand for at least the next few years. Moreover, the goal was to quantify the economic impact of reducing cycle times.To accomplish the objectives of this research, a valid simulation model of the production line of the fab was built. The production equipment (tool sets) that significantly influence production cycle time were identified through factor screening experiments. Based on these factors, several scenarios involving the acquisition of additional tools, aimed at cutting down cycle times, were identified and the operating characteristics curves were constructed. These characteristics curves were used to relate cycle time to production volume capabilities. Finally, an economic analysis was conducted to evaluate the return on investment in additional tools.The outcome of the case study was the identification of bottleneck facilities in the fab that have a significant impact on the cycle time of the four technologies. In the economic analysis, the cost of adding machines to these facilities was compared with the benefits resulting from the increase in production capacities.     

Optimizing service-level and relevant cost for a stochastic multi-item cyclic production system

A multi-item make-to-order production system in a stochastic environment is analyzed. Assuming a common cycle production approach, the impact of safety stock, cycle time, demand, processing time and setup time on service-level and total relevant cost (holding, setup and backorder cost) is determined. To illustrate this relationship a trajectory for the service-level with respect to the relevant cost (holding and setup) is presented. Furthermore algorithms to calculate the cycle time which leads to maximum service-level at constant safety stock and to calculate the pair cycle time and safety stock which minimize total relevant cost are introduced.     

关于疫情影响下赶工费用的计算思路探讨

在建设项目实施过程中,经常遇到工期延误的情况.在非承包人原因(如不可抗力等)导致工期延误的情况下,为保证工期,发包人常要求承包人赶工,由此往往出现赶工费用计算的问题.以2020年新型冠状病毒肺炎疫情为例,由于受到疫情影响,大量建设项目进度滞后.随着近期国内疫情渐渐好转、各地的建设项目纷纷复工并全面展开,为避免因建设项目...     

建设项目全寿命期精益成本管理研究

简要介绍了建设项目全寿命期成本管理和精益成本管理的概念，并对全寿命期和全过程成本管理方式进行了比较。在此基础上总结出全寿命期精益成本管理的概念，并对其特点进行了介绍，包括全员性、集成性、动态性和综合性。提出了建设项目全寿命期精益成本管理的体系框架，明确其成本最小化和顾客满意最大化的管理目标。分别从投资决策、设计、招投标、施工、竣工验收和运营养护6个阶段论述了全寿命精益成本管理的具体措施。     

谈实验室设备的计量管理

分析了实验室仪器设备计量管理的重要方式——检定和校准的异同,介绍了实验室认可准则对仪器设备校准的要求,认为校准已经逐渐在代替原来计量栓定的功能,实验室应将校准和计量检定结合起来。作为一个监视设备运行状况的重要手段,对仪器设备的期间核查作了简要叙述。     

Economic lot and delivery scheduling problem for multi-stage supply chains

The economic lot and delivery scheduling problem for a multi-stage supply chain comprising multiple items is studied in this paper. It is required to develop a synchronized replenishment strategy, and specify the sequence of production and the replenishment cycle time that achieves synchronization through the supply chain at minimum cost. The problem is presented in a novel formulation based on the quadratic assignment representation. The common cycle time and the integer multipliers policies are adopted to accomplish the desired synchronization. The two policies are represented by nonlinear models handled through a hybrid algorithm. The algorithm combines linearization, outer approximation and Benders decomposition techniques. Results of the two policies demonstrate that a cost reduction up to16.3% can be attained by employing the integer multipliers policy instead of the common cycle time. Computational experiments show the efficiency of the new formulation and solution algorithm by reaching the optimal solution for large problem instances in short time.     

A production rate control policy for stochastic repair and remanufacturing systems

We consider the control of a manufacturing system responding to planned demand at the end of the expected life of each individual piece of equipment and unplanned demand triggered by a major equipment failure. The difficulty of controlling this type of production system resides in the variable nature of the remanufacturing process. In practice, remanufacturing operations for planned demand can be executed at different rates, referring to different component replacement and repair strategies. We formulate this problem as a multi-level control problem and propose a suboptimal control policy. The proposed control policy is described by inventory thresholds triggering the use of different execution modes. Determination of the control policy parameters is based on parameter optimization of analytical cost expressions. A numerical example based on a real case is presented. Our analysis demonstrates that the use of the proposed control approach can lead to a significant reduction in the total average cost, as compared to current practices.     

影响石化静设备成本的若干因素分析

文章通过化工设备中20个与零部件有关的事例，从设计和制造两个角度探讨了影响设备成本的几方面因素。设计上既涉及设备的整体形式和局部结构，也涉及外形尺寸和材料选择，制造上既涉及国家标准和制造工艺，也涉及质量检验和项目管理。