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FUJI ELECTRIC JOURNAL 2001 Vol.74-No.4
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Maintenance and Service Technology |
Recent Status and Outlook of Maintenance and Service Technology
Hidefumi Anno, Yasuo Nakahara, Osami Watanabe
Repairs and maintenance services conventionally offered by manufacturers and vendors have to be improved in their own efficiency and take in new technologies so as to realize long-term, stable operation and rationalize maintenance work. In the future, from the point of view of optimizing customer s investment for the life cycle of whole equipment, service solutions to improve customer 's business results and valuation will be developed.
Call Center "CRM24"
Shigeru Takizawa, Mamoru Sato, Naomichi Fujimoto
Fuji Electric started the operation of "Call Center" in October 1999 with the aim of reinforcing the customer service system. The Call Center is equipped with the CRM24 (customer relationship management 24) system that manages (collects, processes, analyzes and distributes) all information on the customer systems, the CTI (computer telephony integration) system to quickly deal with customer requirements, and the remote maintenance system for remote monitoring and diagnosis. It opens 24 hours throughout the year. This paper describes the Call Center including the function and setup of each support system.
Fuji Maintenance Service Menu "COMET"
Mikio Matsui, Akitomo Kotaka
The COMET systematized services for consulting on the maintenance of information equipment (such as computers, distributed control equipment, telemeter/tele-control equipment, industrial personal computers and uninterruptible power supply), periodic maintenance/diagnosis,and repairs, including equipment management. This service system is aimed at maintaining stable operation while reducing the life cycle maintenance cost by means of a maintenance plan suitable for the operating environment of equipment and maintenance suitable for the operating condition. This paper outlines the COMET service menu system.
Remote Maintenance
Souji Fukushima, Yutaka Tsujimoto, Eiji Nishimura
In the management of equipment and facilities in recent years, a form of service by means of manufacturer's remote monitoring instead of customer's monitoring is becoming general. This paper describes an outline of the equipment supplied by Fuji Electric (the control system, client-server system, uninterruptible power supply, private power generating equipment, variable-speed drive, etc.) and the remote maintenance for the equipment.
Online Plant Diagnosis System
Hiroshi Yoshida, Hisao Yoshino, Yasuharu Kitatani
"Stable operation" and "rational maintenance" become essential subjects in production facilities. For example, some companies hold up concrete targets such as two times the MTBF (mean time between failure) or half the MTTR (mean time to repair) or maintenance cost. To meet these requirements, Fuji Electric has built an online integrated plant diagnosis system not only for rotating machine systems but also for electrical systems and plant/production line systems.
Diagnostic Technology of Electronic Device Degradation by Corrosive Gases
Toshikazu Kubo
Corrosion, a factor of electronic device degradation, is sensitive to environmental factors such as humidity and corrosive gases. Environmental research is a very important technique for electronic devices to make plans against corrosion and preventive maintenance. This paper describes the types and measurements of corrosion gases among environmental factors. Also we introduce some examples of our environmental researches on manufacturing environment free from ambient air pollution and corrosion control for devices.
Insulation Diagnosis Technique for Rotating Machine Windings
Hirotoshi Sasaki, Kohji Haga
Fuji Electric is developing preventive maintenance technique for the stator windings of alternating machines widely used in industry. With regard to high-voltage machines, this paper describes general insulation diagnosis, the method of estimating life expectancy from insulation diagnosis data, the new evaluation method of our own for small and medium capacity machines, and the partial discharge monitor. Also it introduces the thermal degradation diagnosis method for insulating materials used in high-and-low-voltage machines and preventive maintenance for low-voltage windings different from high-voltage ones derived from burnout examples.
Deterioration Diagnosis of Insulating Paper for Oil-Immersed Transformers by Spectrophotometric Colorimetry
Nobuhiko Hatano, Yoshitake Nakagami, Ryoichi Miya
The present high information society requires the stable supply of high-quality electric power. On the other hand, equipment renewal to increase capacity has reduced under recent low economic growth and there are growing needs for using existing equipment to the utmost limit of life. Under these social circumstances, it is required to improve deterioration diagnosis technology to grasp the deterioration degree of oil-immersed transformers and precisely make a decision on renewal time. This paper describes the present status of transformer deterioration diagnosis and a part of the latest diagnosis technology, life expectancy estimation using colorimetry.
Maintenance Utilizing Information Technology
Toshiyuki Hara, Naoki Azumaya, Takashi Miyano
Information technology (IT), including the internet, is very effective in rationalizing maintenance work and reducing labor. The offers of maintenance services and the improvement of maintenance efficiency utilizing IT aiming at better service to customers are expected to develop more and more. This paper introduces various maintenance services utilizing IT which Fuji Electric offers to help customers improve the enterprise value.
Remote Maintenance of Water and Sewage Treatment Plants and Future Maintenance
Tomizo Enoue, Manabu Sagawa
The environment of water and sewage treatment plants are faced with great changes such as measures to be taken against environmental problems, reduction in public construction expenses, and a wider district assigned to a plant. In addition, high-level maintenance as a life line is required. This paper describes the remote maintenance of complicated, sophisticated supervisory control systems and improvements in future maintenance work. In particular, maintenance on commission, various management services, and maintenance work support systems are proposed.
Maintenance of the Supervisory Control System for Power Systems
Satoru Takahashi, Kazushi Ikeuchi
Maintenance work plays an important role in the supervisory control system for power systems where high reliability is required. Recently, intervals between system renewals have become longer, and this causes problems in keeping engineers and parts for maintenance. On the other hand, systems using many general-purpose products from multi-vendors increase and require maintenance beyond conventional regular inspection and restoration. This paper describes Fuji Electric's activities in the maintenance of the supervisory control system for power systems under these circumstances.
Recent Technologies for Hydroelectric Modernization
Yukio Murata, Shigeo Aizawa
The introduction of wind power and photovoltaic generation that use natural energy to prevent global warming has been accelerated. The performance improvement of existing hydroelectric equipment by modernization is environmentally and economically superior, and is an important technique that can be taken up near ourselves. This paper describes examples of runner designing to meet environmental changes and operational conditions and stators with loss reduced by modernization, and also recent hydroelectric improvement technologies, such as electric servomotors for runner vanes, hybrid servomotors, coating technology against wear by sand and modernized bearings.
Maintenance of Radiation Monitoring Systems
Kei Aoyama
As the safety and quality of atomic power facilities are more strongly required, the reliability improvement and preventive maintenance of radiation monitoring systems are important. This paper describes the maintenance of radiation monitoring systems delivered by Fuji Electric and the present status of preventive maintenance technology. Also it introduces the case that we developed a fault diagnosis function adopting a statistics technique and artificial intelligence (AI) and delivered a radiation monitoring system including this function. This system can output a fault analysis result and a countermeasure from the computer in real time.
