Electrical Preventive Maintenance Research Articles

Management and Maintenance of Electrical Equipment in Industrial Facilities: Procedures for Improving Safety While Saving Money

This article discusses the importance of managing developed electrical preventive maintenance (EPM) programs, challenges resulting from underdeveloped EPM approaches, and methods for implementing and managing these initiatives. Electrical equipment that has not been properly maintained can impact worker safety due to undocumented and unknown conditions. With aging infrastructure and modifications to electrical systems through time, previously calculated short circuit capacities, arc-flash hazards, and device coordination may not reflect the installed electrical system. Performing preventive maintenance on electrical systems at industrial facilities, especially low-voltage systems, can be more difficult during economic downtimes. Justifying the costs associated with maintaining and/or upgrading systems can be challenging.

Using RCM to Build Your Arc Flash Safety and Electrical Preventive Maintenance Program

Using RCM to Build Your Arc Flash Safety and Electrical Preventive Maintenance Program

Advanced Progress in Diagnosing the Reliability of Electrical Equipments by Infrared Thermography

Infrared thermography was obtained more attention and accepted as an effective method in electrical preventive maintenance in account of high precision and sensitivity image features. This review elaborates the application of infrared thermography for diagnosing electrical equipment, both of the thermal anomalies and methods of measurement. Developments of the inspection techniques are remarkable for purpose of investigate the reliability of electrical equipments due to the effect of the environmental factors and equipment condition. Due to the complex analysis, various automatic diagnostic systems are proposed for faster and more accurate detection. Recent technologies of typical engineering solutions are introduced to raise the level of infrared thermography inspection.

Quantitative Relationship Between Scheduled Electrical Preventive Maintenance and Failure Rate of Electrical Equipment

One of the important total operating cost decisions made by the management of an industrial plant is how much money to spend for scheduled electrical preventive maintenance. The amount of maintenance of a component can affect its failure rate. Very little quantitative data have been collected and published on this subject. There is an optimum amount of scheduled electrical preventive maintenance that minimizes the total of the maintenance costs plus the costs associated with failures and power outages. Reliability surveys conducted by the IEEE Industry Applications Society Power Systems Reliability Subcommittee during 1973-1980 have shown that inadequate maintenance is a significant cause of electrical equipment failures in industrial plants. A summary of this IEEE data for several categories of electrical equipment is given. Also included is a summary of a recently published paper on this subject where an optimum maintenance interval has been determined for 23 categories of electrical equipment.

CONTROLLING THE ELECTROCUTION HAZARD IN THE HOSPITAL

The hospitalized patient is in jeopardy from the electrical devices that surround or are attached to him. He is at a special risk because he is frequently grounded by monitoring devices and his protective skin barrier breached. Poorly designed electrical devices and inadequate or improper grounding of the hospital electrical system or of the equipment add to his danger. The adoption of the following steps will reduce this hazard: (1) Never ground the patient; ground everything else. (2) The building wiring and electrical supply, especially its grounding system should be brought up to modern standards. (3) All new electrical equipment should be evaluated for safety and tested before use. (4) An ongoing electrical preventive maintenance program should be established. Isolation power supplies (safe power centers) have been proposed to reduce or eliminate these hazards but are not recommended.

Controlling the Electrocution Hazard in the Hospital

The hospitalized patient is in jeopardy from the electrical devices that surround or are attached to him. He is at a special risk because he is frequently grounded by monitoring devices and his protective skin barrier breached. Poorly designed electrical devices and inadequate or improper grounding of the hospital electrical system or of the equipment add to his danger. The adoption of the following steps will reduce this hazard: (1) Never ground the patient; ground everything else. (2) The building wiring and electrical supply, especially its grounding system should be brought up to modern standards. (3) All new electrical equipment should be evaluated for safety and tested before use. (4) An ongoing electrical preventive maintenance program should be established. Isolation power supplies (safe power centers) have been proposed to reduce or eliminate these hazards but are not recommended.