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This chapter focuses on the principles and techniques in best maintenance practices, necessary for maintenance personnel to keep equipment operating at peak reliability and companies functioning more profitably through reduced maintenance costs and increased productivity and capacity. Preventive maintenance (PM) procedures have been developed, however, they lack details to make them efficient and safe, and to reinforce sound maintenance practices. Maintenance personnel do not have the requisite skills. The maintenance workforce lacks either the discipline or direction to follow best maintenance repair practices. Proper training in effective plant lubrication procedures and techniques should be provided. The maintenance manager needs to conduct monthly spot checks on randomly selected PMs and repairs for quality assurance. It is necessary to ensure that all machines have operator checklists, and that these checks are done properly, and the results are turned in to the responsible supervisor. Training plant management and workforce is important for preventive and predictive maintenance. Preventive maintenance is the most important routine function that maintenance personnel can accomplish. The reactive, breakdown maintenance mode will never be gotten away from if PMs are not performed consistently and properly on a regularly scheduled basis.

The B Plant Cleanout and Stabilization Program Update FY1993 committed to an annual update document. The Cleanout and Stabilization Program (CSP) plan, Reference 1, remains as the best source of detailed discussion of CSP work and continues to be valid. The CSP presented a five year plan that left a number of plant systems operational to support WESF (Waste Encapsulation and Storage Facility) capsule storage. It is now apparent that the transition of B Plant to a long-term surveillance and maintenance mode (LTS and M) will be necessary to complete B Plant deactivation. To accomplish the LTS and M mode for B Plant, WESF will need to be physically isolated to allow stand alone operation for many years beyond the anticipated B Plant deactivation. B Plant has processed large quantities (> 100 megacuries) of cesium-137 and strontium-90. Residual radioactive contamination from this processing is in many forms and locations in B Plant. The plant design incorporates many features for radiological containment and confinement and systems to prevent the exposure of plant personnel and the public to excessive radiation. To minimize or reduce the radiological hazard wherever possible this program includes activities in four areas: Prevent Migration of Contamination; Stabilize Majormore » Radioactive Source Terms; characterize Radioactive Source Terms; and Reduce Radiation Dose Rates. This document will describe work that is need to meet current goals and objectives and work that has changed, been completed, ore redirected. A systems engineering approach to defining this mission was initiated in FY1994 that will also be addressed in this document.« less

Maintenance, traditionally the last phase of the Software Life Cycle, is usually overlooked, under documented, and never appreciated. Maintenance is usually thought of as "something that's done after the work is done" and is usually delegated to junior programmers. As a result the modified system can many times contain more defects that the original system.This article will describe the Software Maintenance Standard and how it can provide the foundation for better control of Maintenance.

The advantages of remote control of the existing ion implant systems will be discussed. Factors for consideration are, in the order of importance, radiation, maintenance, and environment control. By removing the controls and monitors from the equipment, operating personnel are moved from a potential radiation area to a radiation-free area and operation can now be classified as “non-radiation” workers. All system maintenance is performed in the equipment core area without disrupting either the clean room equipment or adjacent equipment. For the system operating in a maintenance mode, the controls rotate 90° into the equipment core area. The wafer load and machine control areas are isolated from the clean room via doors and sliding windows. The remote control modification replaces hand-driven leak valves and control potentiometers with motor drives. The source parameters located at high voltage and previously observed by the operator through a lead window are now monitored by a closed circuit TV system and displayed at the control console.

To realize automatic management of navigation-aids, this paper presented an idea of navigation-aids inspection using video surveillance technology. It was aimed at solving problems of navigation-aids inspection and maintenance mode. It analyzed the current status of navigation-aids inspection and maintenance in areas, and researched the development and application of video surveillance technology. The results indicated that navigation-aids inspection and maintenance with video surveillance can better improve work efficiency, save costs and protect the quality of navigation-aids service.

Publisher Summary This chapter describes a session on the maintenance of application software. During the life cycle of a software system, maintenance often eats up much more than the initial costs of the system. The session was to discuss this costly and disagreeable problem. It took place in two parts. In the first part, every member of the panel gave an overview of the situation and stated what is done to fight the difficulties in his company. In the second part, there was discussion between the panel and the audience. The outcome of the discussion was that software maintenance is very different from hardware maintenance. Software maintenance is about 60% as a result of modification and updating caused by environment changes, about 20% as a result of erroneous or misinterpreted specifications, and about 20% as a result of coding errors. The amount of money necessary for maintenance is difficult to forecast, especially in case of modifications. It is found that costs are usually underestimated.